Hi All,
I am in .NET 2003
I have a form and a toolbar on the form.
When the user clicks on a button on the toolbar I call
the following Sub
I get a crash on the last line: tlbSearch.Butto ns(0).Enabled = True
' Enable search
An unhandled exception of type "System.Nullref erenceExecption " occured
etc.....
Object Reference not set to an instance of an object
How can this be?, near the stop of the Sub I execute:
tlbSearch.Butto ns(0).Enabled = False ' Disable search
with no problem. What could have happended to the toolbar object?
I am new to objects, I come from a VB background.
Thanks in Advance,
Larry
'--------------------------------------------------------------------------------------
Public Sub DoTheSearch()
Dim intDX As Integer
Dim Structures As New clsStructures
Dim clsMiscProjMult i As New
MiscProjectMult iTable_Handler( Permissions.Con nectionString)
Dim SearchDataReade r As SqlClient.SqlDa taReader
Dim blnWhere As Boolean = False
Dim TheRetrievalTyp e As RetrievalType
Dim NotFoundMsg As String
Dim strSelectString = "SELECT ProjectID,Reg,F ee,Title," & _
"MiscFeeTypeID, " & _
"Fee, Quarter,
[Year],MiscProjectSta tusID," & _
"StatusDate,Mis cellaneous_Proj ect.Account_ID, FinalizedDate," & _
"ContactEmploye eID,ContactEmai l," & _
"Unex_Employee. EmpFirstName + ' ' +
Unex_Employee.E mpLastName As EmpName," & _
"Account.Exp_Ac count + '-' +
Account.Cost_Ce nter As ExpAcctCC " & _
"FROM Miscellaneous_P roject " & _
"Left Outer Join Unex_Employee " & _
"On
Miscellaneous_P roject.ContactE mployeeID = Unex_Employee.E mployeeID " & _
"Left Outer Join Account " & _
"On Miscellaneous_P roject.Account_ ID
= Account.Account _ID "
'----------
Me.Cursor = System.Windows. Forms.Cursors.W aitCursor()
tlbSearch.Butto ns(0).Enabled = False ' Disable (this is ok)
menuSearch.Enab led = False
tlbSearch.Butto ns(1).Enabled = True ' Enable
stop
menuStop.Enable d = True
tlbSearch.Butto ns(2).Enabled = False '
Disable print
menuPrint.Enabl ed = False
tlbSearch.Butto ns(4).Enabled = False '
Disable the create new button.
menuCreateNew.E nabled = False '
Disable the create new menu item.
tlbSearch.Butto ns(5).Enabled = False '
Disable Edit
menuEdit.Enable d = False
stsSearch.text = "Searching..... "
' Clear the grid.
C1FGResults.Row Sel = -1
C1FGResults.Col Sel = -1
If C1FGResults.Row s.Count > 1 Then
For intDX = (C1FGResults.Ro ws.Count - 1) To 1 Step -1
C1FGResults().R ows.Remove(intD X)
Next
End If
'-----------------------------------------------
If Me.txtRegProjID .Text = vbNullString Then
' look for projects using the type, Status and Deparatment
' build the query string, using the parameters.
If c1cboFeeType.Se lectedIndex > 0 Then
strSelectString = strSelectString & " Where
Miscellaneous_P roject.MiscFeeT ypeID = " &
Structures.GetC omboValue(c1cbo FeeType)
blnWhere = True
End If
'----------
If c1cboProjectSta tus.SelectedInd ex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.MiscPro jectStatusID = " &
Structures.GetC omboValue(c1cbo ProjectStatus)
End If
'----------
If c1cboDept.Selec tedIndex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.Account _ID = " & Structures.GetC omboValue(c1cbo Dept)
End If
'----------
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
While SearchDataReade r.Read() = True
Call AddARow(SearchD ataReader)
End While
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
MsgBox("Unable to find any projects with the parameters
selected.", MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException,
"", True)
End If
Else
' Did the user enter a project Id or a Reg number?
If IsNumeric(Mid(t xtRegProjID.Tex t, 1, 1)) Then
strSelectString = strSelectString & " Where ProjectID = " &
Trim$(txtRegPro jID.Text)
TheRetrievalTyp e = RetrievalType.P rojectID
Else
' the user entered a reg number.
strSelectString = strSelectString & " Where Reg = '" &
Trim$(txtRegPro jID.Text) & "'"
TheRetrievalTyp e = RetrievalType.R egNumber
End If
' do the read.
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
SearchDataReade r.Read()
Call AddARow(SearchD ataReader)
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
If TheRetrievalTyp e = RetrievalType.P rojectID Then
NotFoundMsg = "Project ID of : " & Trim$(txtRegPro jID.Text)
Else
NotFoundMsg = "Reg Number of : " & Trim$(txtRegPro jID.Text)
End If
MsgBox("Unable to find a project with a " & NotFoundMsg,
MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException,
"", True)
End If
End If
'-------------------------------------------------------
Me.Cursor = System.Windows. Forms.Cursors.D efault()
tlbSearch.Butto ns(0).Enabled = True ' Enable (This crashes)
6  3674 
I would suggest you first put Option Explicit On, the .vb file and see if
you get any errors in the method, correct them and try.. If you still get
the error , we will take it from there
Vijay
"Larry" <bl***@Blifff.c om> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Hi All,
I am in .NET 2003
I have a form and a toolbar on the form.
When the user clicks on a button on the toolbar I call
the following Sub
I get a crash on the last line: tlbSearch.Butto ns(0).Enabled = True '
Enable search
An unhandled exception of type "System.Nullref erenceExecption " occured
etc.....
Object Reference not set to an instance of an object
How can this be?, near the stop of the Sub I execute:
tlbSearch.Butto ns(0).Enabled = False ' Disable search
with no problem. What could have happended to the toolbar object?
I am new to objects, I come from a VB background.
Thanks in Advance,
Larry
'--------------------------------------------------------------------------------------
Public Sub DoTheSearch()
Dim intDX As Integer
Dim Structures As New clsStructures
Dim clsMiscProjMult i As New
MiscProjectMult iTable_Handler( Permissions.Con nectionString)
Dim SearchDataReade r As SqlClient.SqlDa taReader
Dim blnWhere As Boolean = False
Dim TheRetrievalTyp e As RetrievalType
Dim NotFoundMsg As String
Dim strSelectString = "SELECT ProjectID,Reg,F ee,Title," & _
"MiscFeeTypeID, " & _
"Fee, Quarter,
[Year],MiscProjectSta tusID," & _
"StatusDate,Mis cellaneous_Proj ect.Account_ID, FinalizedDate," & _
"ContactEmploye eID,ContactEmai l," & _
"Unex_Employee. EmpFirstName + ' ' +
Unex_Employee.E mpLastName As EmpName," & _
"Account.Exp_Ac count + '-' +
Account.Cost_Ce nter As ExpAcctCC " & _
"FROM Miscellaneous_P roject " & _
"Left Outer Join Unex_Employee " & _
"On
Miscellaneous_P roject.ContactE mployeeID = Unex_Employee.E mployeeID " & _
"Left Outer Join Account " & _
"On Miscellaneous_P roject.Account_ ID =
Account.Account _ID "
'----------
Me.Cursor = System.Windows. Forms.Cursors.W aitCursor()
tlbSearch.Butto ns(0).Enabled = False ' Disable (this is ok)
menuSearch.Enab led = False
tlbSearch.Butto ns(1).Enabled = True ' Enable
stop
menuStop.Enable d = True
tlbSearch.Butto ns(2).Enabled = False ' Disable
print
menuPrint.Enabl ed = False
tlbSearch.Butto ns(4).Enabled = False ' Disable
the create new button.
menuCreateNew.E nabled = False ' Disable
the create new menu item.
tlbSearch.Butto ns(5).Enabled = False ' Disable
Edit
menuEdit.Enable d = False
stsSearch.text = "Searching..... "
' Clear the grid.
C1FGResults.Row Sel = -1
C1FGResults.Col Sel = -1
If C1FGResults.Row s.Count > 1 Then
For intDX = (C1FGResults.Ro ws.Count - 1) To 1 Step -1
C1FGResults().R ows.Remove(intD X)
Next
End If
'-----------------------------------------------
If Me.txtRegProjID .Text = vbNullString Then
' look for projects using the type, Status and Deparatment
' build the query string, using the parameters.
If c1cboFeeType.Se lectedIndex > 0 Then
strSelectString = strSelectString & " Where
Miscellaneous_P roject.MiscFeeT ypeID = " &
Structures.GetC omboValue(c1cbo FeeType)
blnWhere = True
End If
'----------
If c1cboProjectSta tus.SelectedInd ex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.MiscPro jectStatusID = " &
Structures.GetC omboValue(c1cbo ProjectStatus)
End If
'----------
If c1cboDept.Selec tedIndex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.Account _ID = " &
Structures.GetC omboValue(c1cbo Dept)
End If
'----------
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
While SearchDataReade r.Read() = True
Call AddARow(SearchD ataReader)
End While
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
MsgBox("Unable to find any projects with the parameters
selected.", MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException, "",
True)
End If
Else
' Did the user enter a project Id or a Reg number?
If IsNumeric(Mid(t xtRegProjID.Tex t, 1, 1)) Then
strSelectString = strSelectString & " Where ProjectID = " &
Trim$(txtRegPro jID.Text)
TheRetrievalTyp e = RetrievalType.P rojectID
Else
' the user entered a reg number.
strSelectString = strSelectString & " Where Reg = '" &
Trim$(txtRegPro jID.Text) & "'"
TheRetrievalTyp e = RetrievalType.R egNumber
End If
' do the read.
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
SearchDataReade r.Read()
Call AddARow(SearchD ataReader)
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
If TheRetrievalTyp e = RetrievalType.P rojectID Then
NotFoundMsg = "Project ID of : " & Trim$(txtRegPro jID.Text)
Else
NotFoundMsg = "Reg Number of : " & Trim$(txtRegPro jID.Text)
End If
MsgBox("Unable to find a project with a " & NotFoundMsg,
MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException, "",
True)
End If
End If
'-------------------------------------------------------
Me.Cursor = System.Windows. Forms.Cursors.D efault()
tlbSearch.Butto ns(0).Enabled = True ' Enable (This crashes)
If VB 2003 has Option Strict, turn it on as well. Make the compiler do as
much of the work for you as it can.
Mike Ober.
"vj" <vi********@yah oo.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. .. I would suggest you first put Option Explicit On, the .vb file and see if
you get any errors in the method, correct them and try.. If you still get
the error , we will take it from there
Vijay
"Larry" <bl***@Blifff.c om> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Hi All,
I am in .NET 2003
I have a form and a toolbar on the form.
When the user clicks on a button on the toolbar I call
the following Sub
I get a crash on the last line: tlbSearch.Butto ns(0).Enabled = True '
Enable search
An unhandled exception of type "System.Nullref erenceExecption " occured
etc.....
Object Reference not set to an instance of an object
How can this be?, near the stop of the Sub I execute:
tlbSearch.Butto ns(0).Enabled = False ' Disable search
with no problem. What could have happended to the toolbar object?
I am new to objects, I come from a VB background.
Thanks in Advance,
Larry
'---------------------------------------------------------------------------
-----------
Public Sub DoTheSearch()
Dim intDX As Integer
Dim Structures As New clsStructures
Dim clsMiscProjMult i As New
MiscProjectMult iTable_Handler( Permissions.Con nectionString)
Dim SearchDataReade r As SqlClient.SqlDa taReader
Dim blnWhere As Boolean = False
Dim TheRetrievalTyp e As RetrievalType
Dim NotFoundMsg As String
Dim strSelectString = "SELECT ProjectID,Reg,F ee,Title," & _
"MiscFeeTypeID, " & _
"Fee, Quarter,
[Year],MiscProjectSta tusID," & _
"StatusDate,Mis cellaneous_Proj ect.Account_ID, FinalizedDate," & _
"ContactEmploye eID,ContactEmai l," & _
"Unex_Employee. EmpFirstName + ' ' +
Unex_Employee.E mpLastName As EmpName," & _
"Account.Exp_Ac count + '-' +
Account.Cost_Ce nter As ExpAcctCC " & _
"FROM Miscellaneous_P roject " & _
"Left Outer Join Unex_Employee " & _
"On
Miscellaneous_P roject.ContactE mployeeID = Unex_Employee.E mployeeID " & _
"Left Outer Join Account " & _
"On Miscellaneous_P roject.Account_ ID =
Account.Account _ID "
'----------
Me.Cursor = System.Windows. Forms.Cursors.W aitCursor()
tlbSearch.Butto ns(0).Enabled = False ' Disable (this is ok)
menuSearch.Enab led = False
tlbSearch.Butto ns(1).Enabled = True ' Enable
stop
menuStop.Enable d = True
tlbSearch.Butto ns(2).Enabled = False ' Disable
print
menuPrint.Enabl ed = False
tlbSearch.Butto ns(4).Enabled = False ' Disable
the create new button.
menuCreateNew.E nabled = False ' Disable
the create new menu item.
tlbSearch.Butto ns(5).Enabled = False ' Disable
Edit
menuEdit.Enable d = False
stsSearch.text = "Searching..... "
' Clear the grid.
C1FGResults.Row Sel = -1
C1FGResults.Col Sel = -1
If C1FGResults.Row s.Count > 1 Then
For intDX = (C1FGResults.Ro ws.Count - 1) To 1 Step -1
C1FGResults().R ows.Remove(intD X)
Next
End If
'-----------------------------------------------
If Me.txtRegProjID .Text = vbNullString Then
' look for projects using the type, Status and Deparatment
' build the query string, using the parameters.
If c1cboFeeType.Se lectedIndex > 0 Then
strSelectString = strSelectString & " Where
Miscellaneous_P roject.MiscFeeT ypeID = " &
Structures.GetC omboValue(c1cbo FeeType)
blnWhere = True
End If
'----------
If c1cboProjectSta tus.SelectedInd ex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.MiscPro jectStatusID = " &
Structures.GetC omboValue(c1cbo ProjectStatus)
End If
'----------
If c1cboDept.Selec tedIndex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.Account _ID = " &
Structures.GetC omboValue(c1cbo Dept)
End If
'----------
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
While SearchDataReade r.Read() = True
Call AddARow(SearchD ataReader)
End While
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
MsgBox("Unable to find any projects with the parameters
selected.", MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException, "",
True)
End If
Else
' Did the user enter a project Id or a Reg number?
If IsNumeric(Mid(t xtRegProjID.Tex t, 1, 1)) Then
strSelectString = strSelectString & " Where ProjectID = " &
Trim$(txtRegPro jID.Text)
TheRetrievalTyp e = RetrievalType.P rojectID
Else
' the user entered a reg number.
strSelectString = strSelectString & " Where Reg = '" &
Trim$(txtRegPro jID.Text) & "'"
TheRetrievalTyp e = RetrievalType.R egNumber
End If
' do the read.
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
SearchDataReade r.Read()
Call AddARow(SearchD ataReader)
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
If TheRetrievalTyp e = RetrievalType.P rojectID Then
NotFoundMsg = "Project ID of : " &
Trim$(txtRegPro jID.Text) Else
NotFoundMsg = "Reg Number of : " &
Trim$(txtRegPro jID.Text) End If
MsgBox("Unable to find a project with a " & NotFoundMsg,
MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException, "",
True)
End If
End If
'-------------------------------------------------------
Me.Cursor = System.Windows. Forms.Cursors.D efault()
tlbSearch.Butto ns(0).Enabled = True ' Enable (This crashes)
Thank You for your input,
I tried Option Strict On,
but I get many errors that I don't believe I can correct,
I am referring to a Component One Flex Grid control,
I get:
"Option Strict On prohibits operands of type object for operator%"
It seems that the Component One Flex Grid Control has a a property
or parameter that is object.
C1.FlexGridBase Item(ByVal Integer, byVal Integer) as object
Larry
Michael D. Ober wrote: If VB 2003 has Option Strict, turn it on as well. Make the compiler do as
much of the work for you as it can.
Mike Ober.
"vj" <vi********@yah oo.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. .. I would suggest you first put Option Explicit On, the .vb file and see if
you get any errors in the method, correct them and try.. If you still get
the error , we will take it from there
Vijay
"Larry" <bl***@Blifff.c om> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. .. Hi All,
I am in .NET 2003
I have a form and a toolbar on the form.
When the user clicks on a button on the toolbar I call
the following Sub
I get a crash on the last line: tlbSearch.Butto ns(0).Enabled = True '
Enable search
An unhandled exception of type "System.Nullref erenceExecption " occured
etc.....
Object Reference not set to an instance of an object
How can this be?, near the stop of the Sub I execute:
tlbSearch.Butto ns(0).Enabled = False ' Disable search
with no problem. What could have happended to the toolbar object?
I am new to objects, I come from a VB background.
Thanks in Advance,
Larry
'---------------------------------------------------------------------------
----------- Public Sub DoTheSearch()
Dim intDX As Integer
Dim Structures As New clsStructures
Dim clsMiscProjMult i As New
MiscProjectMult iTable_Handler( Permissions.Con nectionString)
Dim SearchDataReade r As SqlClient.SqlDa taReader
Dim blnWhere As Boolean = False
Dim TheRetrievalTyp e As RetrievalType
Dim NotFoundMsg As String
Dim strSelectString = "SELECT ProjectID,Reg,F ee,Title," & _
"MiscFeeTypeID, " & _
"Fee, Quarter,
[Year],MiscProjectSta tusID," & _
"StatusDate,Mis cellaneous_Proj ect.Account_ID, FinalizedDate," & _
"ContactEmploye eID,ContactEmai l," & _
"Unex_Employee. EmpFirstName + ' ' +
Unex_Employee.E mpLastName As EmpName," & _
"Account.Exp_Ac count + '-' +
Account.Cost_Ce nter As ExpAcctCC " & _
"FROM Miscellaneous_P roject " & _
"Left Outer Join Unex_Employee " & _
"On
Miscellaneous_P roject.ContactE mployeeID = Unex_Employee.E mployeeID " & _
"Left Outer Join Account " & _
"On Miscellaneous_P roject.Account_ ID =
Account.Account _ID "
'----------
Me.Cursor = System.Windows. Forms.Cursors.W aitCursor()
tlbSearch.Butto ns(0).Enabled = False ' Disable (this is ok)
menuSearch.Enab led = False
tlbSearch.Butto ns(1).Enabled = True ' Enable
stop
menuStop.Enable d = True
tlbSearch.Butto ns(2).Enabled = False ' Disable
print
menuPrint.Enabl ed = False
tlbSearch.Butto ns(4).Enabled = False ' Disable
the create new button.
menuCreateNew.E nabled = False ' Disable
the create new menu item.
tlbSearch.Butto ns(5).Enabled = False ' Disable
Edit
menuEdit.Enable d = False
stsSearch.text = "Searching..... "
' Clear the grid.
C1FGResults.Row Sel = -1
C1FGResults.Col Sel = -1
If C1FGResults.Row s.Count > 1 Then
For intDX = (C1FGResults.Ro ws.Count - 1) To 1 Step -1
C1FGResults().R ows.Remove(intD X)
Next
End If
'-----------------------------------------------
If Me.txtRegProjID .Text = vbNullString Then
' look for projects using the type, Status and Deparatment
' build the query string, using the parameters.
If c1cboFeeType.Se lectedIndex > 0 Then
strSelectString = strSelectString & " Where
Miscellaneous_P roject.MiscFeeT ypeID = " &
Structures.GetC omboValue(c1cbo FeeType)
blnWhere = True
End If
'----------
If c1cboProjectSta tus.SelectedInd ex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.MiscPro jectStatusID = " &
Structures.GetC omboValue(c1cbo ProjectStatus)
End If
'----------
If c1cboDept.Selec tedIndex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.Account _ID = " &
Structures.GetC omboValue(c1cbo Dept)
End If
'----------
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
While SearchDataReade r.Read() = True
Call AddARow(SearchD ataReader)
End While
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
MsgBox("Unable to find any projects with the parameters
selected.", MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException, "",
True)
End If
Else
' Did the user enter a project Id or a Reg number?
If IsNumeric(Mid(t xtRegProjID.Tex t, 1, 1)) Then
strSelectString = strSelectString & " Where ProjectID = " &
Trim$(txtRegPro jID.Text)
TheRetrievalTyp e = RetrievalType.P rojectID
Else
' the user entered a reg number.
strSelectString = strSelectString & " Where Reg = '" &
Trim$(txtRegPro jID.Text) & "'"
TheRetrievalTyp e = RetrievalType.R egNumber
End If
' do the read.
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
SearchDataReade r.Read()
Call AddARow(SearchD ataReader)
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
If TheRetrievalTyp e = RetrievalType.P rojectID Then
NotFoundMsg = "Project ID of : " & Trim$(txtRegPro jID.Text) Else
NotFoundMsg = "Reg Number of : " & Trim$(txtRegPro jID.Text) End If
MsgBox("Unable to find a project with a " & NotFoundMsg,
MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException, "",
True)
End If
End If
'-------------------------------------------------------
Me.Cursor = System.Windows. Forms.Cursors.D efault()
tlbSearch.Butto ns(0).Enabled = True ' Enable (This crashes)
'Option Strict On' may seem like it is causing problems at the moment. I have
lost a lot of time due to unintended type conversions that VB.NET did without
me knowing. Because of that, I always switch it on.
In this case, the return value is an object. If you know it is in fact a text
that can be converted to an integer, use ctype(<expressi on>,Integer) to
explicitely perform the conversion.
But really, use 'Option Strict On'!!!
Accidentally, have I told you I think you should use 'Option Strict On'?
Renze.
In article <eJ************ **@TK2MSFTNGP11 .phx.gbl>, Larry <bl***@Blifff.c om>
wrote: Thank You for your input,
I tried Option Strict On,
but I get many errors that I don't believe I can correct,
I am referring to a Component One Flex Grid control,
I get:
"Option Strict On prohibits operands of type object for operator%"
It seems that the Component One Flex Grid Control has a a property
or parameter that is object.
C1.FlexGridBas e Item(ByVal Integer, byVal Integer) as object
Larry
Larry,
Are you sure that you have typed that correct?
Cor
"Larry" <bl***@Blifff.c om> schreef in bericht
news:eJ******** ******@TK2MSFTN GP11.phx.gbl... Thank You for your input,
I tried Option Strict On,
but I get many errors that I don't believe I can correct,
I am referring to a Component One Flex Grid control,
I get:
"Option Strict On prohibits operands of type object for operator%"
It seems that the Component One Flex Grid Control has a a property
or parameter that is object.
C1.FlexGridBase Item(ByVal Integer, byVal Integer) as object
Larry
Michael D. Ober wrote: If VB 2003 has Option Strict, turn it on as well. Make the compiler do
as
much of the work for you as it can.
Mike Ober.
"vj" <vi********@yah oo.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. .. I would suggest you first put Option Explicit On, the .vb file and see
if
you get any errors in the method, correct them and try.. If you still
get
the error , we will take it from there
Vijay
"Larry" <bl***@Blifff.c om> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..
Hi All,
I am in .NET 2003
I have a form and a toolbar on the form.
When the user clicks on a button on the toolbar I call
the following Sub
I get a crash on the last line: tlbSearch.Butto ns(0).Enabled = True '
Enable search
An unhandled exception of type "System.Nullref erenceExecption " occured
etc.....
Object Reference not set to an instance of an object
How can this be?, near the stop of the Sub I execute:
tlbSearch.Butto ns(0).Enabled = False ' Disable search
with no problem. What could have happended to the toolbar object?
I am new to objects, I come from a VB background.
Thanks in Advance,
Larry
'---------------------------------------------------------------------------
----------- Public Sub DoTheSearch()
Dim intDX As Integer
Dim Structures As New clsStructures
Dim clsMiscProjMult i As New
MiscProjectMult iTable_Handler( Permissions.Con nectionString)
Dim SearchDataReade r As SqlClient.SqlDa taReader
Dim blnWhere As Boolean = False
Dim TheRetrievalTyp e As RetrievalType
Dim NotFoundMsg As String
Dim strSelectString = "SELECT ProjectID,Reg,F ee,Title," & _
"MiscFeeTypeID, " & _
"Fee, Quarter,
[Year],MiscProjectSta tusID," & _
"StatusDate,Mis cellaneous_Proj ect.Account_ID, FinalizedDate," & _
"ContactEmploye eID,ContactEmai l," & _
"Unex_Employee. EmpFirstName + ' ' +
Unex_Employee.E mpLastName As EmpName," & _
"Account.Exp_Ac count + '-' +
Account.Cost_Ce nter As ExpAcctCC " & _
"FROM Miscellaneous_P roject " & _
"Left Outer Join Unex_Employee " & _
"On
Miscellaneous_P roject.ContactE mployeeID = Unex_Employee.E mployeeID " &
_
"Left Outer Join Account " & _
"On Miscellaneous_P roject.Account_ ID
=
Account.Account _ID "
'----------
Me.Cursor = System.Windows. Forms.Cursors.W aitCursor()
tlbSearch.Butto ns(0).Enabled = False ' Disable (this is ok)
menuSearch.Enab led = False
tlbSearch.Butto ns(1).Enabled = True ' Enable
stop
menuStop.Enable d = True
tlbSearch.Butto ns(2).Enabled = False '
Disable
print
menuPrint.Enabl ed = False
tlbSearch.Butto ns(4).Enabled = False '
Disable
the create new button.
menuCreateNew.E nabled = False '
Disable
the create new menu item.
tlbSearch.Butto ns(5).Enabled = False '
Disable
Edit
menuEdit.Enable d = False
stsSearch.text = "Searching..... "
' Clear the grid.
C1FGResults.Row Sel = -1
C1FGResults.Col Sel = -1
If C1FGResults.Row s.Count > 1 Then
For intDX = (C1FGResults.Ro ws.Count - 1) To 1 Step -1
C1FGResults().R ows.Remove(intD X)
Next
End If
'-----------------------------------------------
If Me.txtRegProjID .Text = vbNullString Then
' look for projects using the type, Status and Deparatment
' build the query string, using the parameters.
If c1cboFeeType.Se lectedIndex > 0 Then
strSelectString = strSelectString & " Where
Miscellaneous_P roject.MiscFeeT ypeID = " &
Structures.GetC omboValue(c1cbo FeeType)
blnWhere = True
End If
'----------
If c1cboProjectSta tus.SelectedInd ex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.MiscPro jectStatusID = " &
Structures.GetC omboValue(c1cbo ProjectStatus)
End If
'----------
If c1cboDept.Selec tedIndex > 0 Then
If blnWhere = False Then
strSelectString = strSelectString & " Where "
blnWhere = True
Else
strSelectString = strSelectString & " And "
End If
strSelectString = strSelectString &
"Miscellaneous_ Project.Account _ID = " &
Structures.GetC omboValue(c1cbo Dept)
End If
'----------
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
While SearchDataReade r.Read() = True
Call AddARow(SearchD ataReader)
End While
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
MsgBox("Unable to find any projects with the parameters
selected.", MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException,
"",
True)
End If
Else
' Did the user enter a project Id or a Reg number?
If IsNumeric(Mid(t xtRegProjID.Tex t, 1, 1)) Then
strSelectString = strSelectString & " Where ProjectID = " &
Trim$(txtRegPro jID.Text)
TheRetrievalTyp e = RetrievalType.P rojectID
Else
' the user entered a reg number.
strSelectString = strSelectString & " Where Reg = '" &
Trim$(txtRegPro jID.Text) & "'"
TheRetrievalTyp e = RetrievalType.R egNumber
End If
' do the read.
If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
SearchDataReade r) = True Then
' No errors, did we find any records?
If SearchDataReade r.HasRows = True Then
SearchDataReade r.Read()
Call AddARow(SearchD ataReader)
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
If TheRetrievalTyp e = RetrievalType.P rojectID Then
NotFoundMsg = "Project ID of : " &
Trim$(txtRegPro jID.Text) Else
NotFoundMsg = "Reg Number of : " &
Trim$(txtRegPro jID.Text) End If
MsgBox("Unable to find a project with a " & NotFoundMsg,
MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
End If
Else
Me.Cursor = System.Windows. Forms.Cursors.D efault()
Dim err As New errorHandler(cl sMiscProjMulti. lastException,
"",
True)
End If
End If
'-------------------------------------------------------
Me.Cursor = System.Windows. Forms.Cursors.D efault()
tlbSearch.Butto ns(0).Enabled = True ' Enable (This crashes)
Thank You for your help.
I found out what it was, I was calling a proc
that did something that caused the form to be unloaded (closed)
and that caused the toolbar buttons collection to not exist.
Thanks again,
Larry
Cor Ligthert [MVP] wrote: Larry,
Are you sure that you have typed that correct?
Cor
"Larry" <bl***@Blifff.c om> schreef in bericht
news:eJ******** ******@TK2MSFTN GP11.phx.gbl... Thank You for your input,
I tried Option Strict On,
but I get many errors that I don't believe I can correct,
I am referring to a Component One Flex Grid control,
I get:
"Option Strict On prohibits operands of type object for operator%"
It seems that the Component One Flex Grid Control has a a property
or parameter that is object.
C1.FlexGridBase Item(ByVal Integer, byVal Integer) as object
Larry
Michael D. Ober wrote: If VB 2003 has Option Strict, turn it on as well. Make the compiler do
as
much of the work for you as it can.
Mike Ober.
"vj" <vi********@yah oo.com> wrote in message
news:%2******** ********@TK2MSF TNGP14.phx.gbl. ..
I would suggest you first put Option Explicit On, the .vb file and see
if
you get any errors in the method, correct them and try.. If you still
get
the error , we will take it from there
Vijay
"Larry" <bl***@Blifff.c om> wrote in message
news:%2******** ********@TK2MSF TNGP09.phx.gbl. ..
> Hi All,
> I am in .NET 2003
>
> I have a form and a toolbar on the form.
> When the user clicks on a button on the toolbar I call
> the following Sub
>
> I get a crash on the last line: tlbSearch.Butto ns(0).Enabled = True '
> Enable search
>
> An unhandled exception of type "System.Nullref erenceExecption " occured
> etc.....
> Object Reference not set to an instance of an object
>
> How can this be?, near the stop of the Sub I execute:
> tlbSearch.Butto ns(0).Enabled = False ' Disable search
> with no problem. What could have happended to the toolbar object?
>
> I am new to objects, I come from a VB background.
>
> Thanks in Advance,
>
> Larry
>
>
'---------------------------------------------------------------------------
-----------
> Public Sub DoTheSearch()
>
> Dim intDX As Integer
> Dim Structures As New clsStructures
> Dim clsMiscProjMult i As New
> MiscProjectMult iTable_Handler( Permissions.Con nectionString)
> Dim SearchDataReade r As SqlClient.SqlDa taReader
> Dim blnWhere As Boolean = False
> Dim TheRetrievalTyp e As RetrievalType
> Dim NotFoundMsg As String
>
> Dim strSelectString = "SELECT ProjectID,Reg,F ee,Title," & _
> "MiscFeeTypeID, " & _
> "Fee, Quarter,
> [Year],MiscProjectSta tusID," & _
>
> "StatusDate,Mis cellaneous_Proj ect.Account_ID, FinalizedDate," & _
> "ContactEmploye eID,ContactEmai l," & _
> "Unex_Employee. EmpFirstName + ' ' +
> Unex_Employee.E mpLastName As EmpName," & _
> "Account.Exp_Ac count + '-' +
> Account.Cost_Ce nter As ExpAcctCC " & _
> "FROM Miscellaneous_P roject " & _
> "Left Outer Join Unex_Employee " & _
> "On
> Miscellaneous_P roject.ContactE mployeeID = Unex_Employee.E mployeeID " &
> _
> "Left Outer Join Account " & _
> "On Miscellaneous_P roject.Account_ ID
> =
> Account.Account _ID "
> '----------
>
> Me.Cursor = System.Windows. Forms.Cursors.W aitCursor()
>
> tlbSearch.Butto ns(0).Enabled = False ' Disable (this is ok)
> menuSearch.Enab led = False
>
> tlbSearch.Butto ns(1).Enabled = True ' Enable
> stop
> menuStop.Enable d = True
>
> tlbSearch.Butto ns(2).Enabled = False '
> Disable
> print
> menuPrint.Enabl ed = False
>
> tlbSearch.Butto ns(4).Enabled = False '
> Disable
> the create new button.
> menuCreateNew.E nabled = False '
> Disable
> the create new menu item.
>
> tlbSearch.Butto ns(5).Enabled = False '
> Disable
> Edit
> menuEdit.Enable d = False
> stsSearch.text = "Searching..... "
>
> ' Clear the grid.
>
> C1FGResults.Row Sel = -1
> C1FGResults.Col Sel = -1
>
> If C1FGResults.Row s.Count > 1 Then
>
> For intDX = (C1FGResults.Ro ws.Count - 1) To 1 Step -1
> C1FGResults().R ows.Remove(intD X)
> Next
>
> End If
>
> '-----------------------------------------------
>
> If Me.txtRegProjID .Text = vbNullString Then
>
> ' look for projects using the type, Status and Deparatment
> ' build the query string, using the parameters.
>
> If c1cboFeeType.Se lectedIndex > 0 Then
> strSelectString = strSelectString & " Where
> Miscellaneous_P roject.MiscFeeT ypeID = " &
> Structures.GetC omboValue(c1cbo FeeType)
> blnWhere = True
> End If
>
> '----------
>
> If c1cboProjectSta tus.SelectedInd ex > 0 Then
>
> If blnWhere = False Then
> strSelectString = strSelectString & " Where "
> blnWhere = True
> Else
> strSelectString = strSelectString & " And "
> End If
>
> strSelectString = strSelectString &
> "Miscellaneous_ Project.MiscPro jectStatusID = " &
> Structures.GetC omboValue(c1cbo ProjectStatus)
> End If
>
> '----------
>
> If c1cboDept.Selec tedIndex > 0 Then
>
> If blnWhere = False Then
> strSelectString = strSelectString & " Where "
> blnWhere = True
> Else
> strSelectString = strSelectString & " And "
> End If
>
> strSelectString = strSelectString &
> "Miscellaneous_ Project.Account _ID = " &
> Structures.GetC omboValue(c1cbo Dept)
>
> End If
>
> '----------
>
> If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
> SearchDataReade r) = True Then
>
> ' No errors, did we find any records?
>
> If SearchDataReade r.HasRows = True Then
>
> While SearchDataReade r.Read() = True
> Call AddARow(SearchD ataReader)
> End While
> Else
> Me.Cursor = System.Windows. Forms.Cursors.D efault()
> MsgBox("Unable to find any projects with the parameters
> selected.", MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
> End If
> Else
> Me.Cursor = System.Windows. Forms.Cursors.D efault()
> Dim err As New errorHandler(cl sMiscProjMulti. lastException,
> "",
> True)
> End If
>
> Else
>
> ' Did the user enter a project Id or a Reg number?
>
> If IsNumeric(Mid(t xtRegProjID.Tex t, 1, 1)) Then
> strSelectString = strSelectString & " Where ProjectID = " &
> Trim$(txtRegPro jID.Text)
> TheRetrievalTyp e = RetrievalType.P rojectID
> Else
> ' the user entered a reg number.
> strSelectString = strSelectString & " Where Reg = '" &
> Trim$(txtRegPro jID.Text) & "'"
> TheRetrievalTyp e = RetrievalType.R egNumber
> End If
>
> ' do the read.
>
> If clsMiscProjMult i.dbSelect_Data Reader(strSelec tString,
> SearchDataReade r) = True Then
>
> ' No errors, did we find any records?
>
> If SearchDataReade r.HasRows = True Then
> SearchDataReade r.Read()
> Call AddARow(SearchD ataReader)
> Else
> Me.Cursor = System.Windows. Forms.Cursors.D efault()
>
> If TheRetrievalTyp e = RetrievalType.P rojectID Then
> NotFoundMsg = "Project ID of : " &
Trim$(txtRegPro jID.Text)
> Else
> NotFoundMsg = "Reg Number of : " &
Trim$(txtRegPro jID.Text)
> End If
>
> MsgBox("Unable to find a project with a " & NotFoundMsg,
> MsgBoxStyle.Inf ormation + MsgBoxStyle.OKO nly, "Not Found.")
> End If
>
> Else
> Me.Cursor = System.Windows. Forms.Cursors.D efault()
> Dim err As New errorHandler(cl sMiscProjMulti. lastException,
> "",
> True)
> End If
>
> End If
>
> '-------------------------------------------------------
>
> Me.Cursor = System.Windows. Forms.Cursors.D efault()
>
> tlbSearch.Butto ns(0).Enabled = True ' Enable (This crashes)
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