473,695 Members | 2,162 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

VS2005 - DefaultValuesNe eded - bug? Adding default values in DataGridView

Hello,

Is this a bug?
Is there some kind of work around?

I want to add default values for a few columns in my datagridview

I found the "DefaultValuesN eeded" event for the datagridview

I gave it a try using the example given in

http://msdn2.microsoft.com/en-us/lib...uesneeded.aspx

Here is my code
\\
Private Sub dgvDeviceTypes_ DefaultValuesNe eded(ByVal sender As
Object, ByVal e As System.Windows. Forms.DataGridV iewRowEventArgs )
Handles dgvDeviceTypes. DefaultValuesNe eded
'enter default values into lkpDeviceTypes
With e.Row
.Cells("dtHide" ).Value = False
.Cells("dtOrd") .Value = 0
.Cells("bMachTy pe").Value = True

End With
End Sub
//

I get the following error;
-----------------------
Column named rEditedBy cannot be found.
Parameter name: columnName
-----------------------
Here is my table;

pkDeviceTypeId smallint
DeviceName varchar(20)
Prefix char(4)
bMachType bit
dtOrd tinyint
dtHide bit
Below is the text of the error - Notice that the code cannot find the
column name. It seems that it thinks the column name is "columnName ";

System.Argument Exception was unhandled
Message="Column named rEditedBy cannot be found.
Parameter name: columnName"
ParamName="colu mnName"
Source="System. Windows.Forms"
StackTrace:
at
System.Windows. Forms.DataGridV iewCellCollecti on.get_Item(Str ing
columnName)
at
QmsUI.f080Admin Setup.dgvLaborC ostCodes_Defaul tValuesNeeded(O bject
sender, DataGridViewRow EventArgs e) in D:\DBuchanan MyDocuments\Vis ual
Studio 2005\Projects\Q ms_01\QmsUI\For m1.vb:line 287
at
System.Windows. Forms.DataGridV iew.OnDefaultVa luesNeeded(Data GridViewRowEven tArgs
e)
at
System.Windows. Forms.DataGridV iew.OnRowEnter( DataGridViewCel l&
dataGridViewCel l, Int32 columnIndex, Int32 rowIndex, Boolean
canCreateNewRow , Boolean validationFailu reOccurred)
at
System.Windows. Forms.DataGridV iew.SetCurrentC ellAddressCore( Int32
columnIndex, Int32 rowIndex, Boolean setAnchorCellAd dress, Boolean
validateCurrent Cell, Boolean throughMouseCli ck)
at System.Windows. Forms.DataGridV iew.OnCellMouse Down(HitTestInf o
hti, Boolean isShiftDown, Boolean isControlDown)
at
System.Windows. Forms.DataGridV iew.OnCellMouse Down(DataGridVi ewCellMouseEven tArgs
e)
at System.Windows. Forms.DataGridV iew.OnMouseDown (MouseEventArgs
e)
at System.Windows. Forms.Control.W mMouseDown(Mess age& m,
MouseButtons button, Int32 clicks)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.DataGridV iew.WndProc(Mes sage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at
System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Applicati on.ComponentMan ager.System.Win dows.Forms.Unsa feNativeMethods .IMsoComponentM anager.FPushMes sageLoop(Int32
dwComponentID, Int32 reason, Int32 pvLoopData)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo pInner(Int32
reason, ApplicationCont ext context)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo p(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Applicat ionContext
context)
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.OnRun ()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.DoApp licationModel()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.Run(S tring[]
commandLine)
at QmsUI.My.MyAppl ication.Main(St ring[] Args) in
17d14f5c-a337-4978-8281-53493378c1071.v b:line 81
at System.AppDomai n.nExecuteAssem bly(Assembly assembly, String[]
args)
at System.AppDomai n.ExecuteAssemb ly(String assemblyFile,
Evidence assemblySecurit y, String[] args)
at
Microsoft.Visua lStudio.Hosting Process.HostPro c.RunUsersAssem bly()
at System.Threadin g.ThreadHelper. ThreadStart_Con text(Object
state)
at System.Threadin g.ExecutionCont ext.Run(Executi onContext
executionContex t, ContextCallback callback, Object state)
at System.Threadin g.ThreadHelper. ThreadStart()
Is this a bug?
Is there some kind of work around?

thank you,
dbuchanan

Dec 1 '05 #1
6 6410
Are you sure that in dgvDeviceTypes_ DefaultValuesNe eded you have no
..Cells("rEditB y").Value = ... ? The error message just indicates that the
argument "columnName " of the operation
"System.Windows .Forms.DataGrid ViewCellCollect ion.get_Item()" is not correct.

Gabriel Lozano-Morán
http://www.realdn.net
Dec 3 '05 #2
Hi Gabriel,

I'm sorry!

I sent the code for the wrong table. Here it is again - the code and
error match this time right this time.

Here is the error message;
--------------------------
Column named rEditedBy cannot be found.
Parameter name: columnName
--------------------------
Here is the code where the error occurs
\\
Private Sub dgvLaborCostCod es_DefaultValue sNeeded(ByVal sender As
Object, ByVal e As System.Windows. Forms.DataGridV iewRowEventArgs )
Handles dgvLaborCostCod es.DefaultValue sNeeded
'enter default values into lkpLaborCostCod es
With e.Row
.Cells("rEdited By").Value = My.User.Name '<< This
line
.Cells("rEdited On").Value = Now
End With
End Sub
//
Here is the data table that is behind the dataGridView
\\
CREATE TABLE [lkpLaborCostCod eRate] (
[pkLaborCostCode RateId] [smallint] IDENTITY (1, 1) NOT NULL ,
[LaborCostCode] [varchar] (20) COLLATE SQL_Latin1_Gene ral_CP1_CI_AS
NOT NULL ,
[HourlyRate] [smallmoney] NOT NULL ,
[rEditedOn] [smalldatetime] NOT NULL , --< I tried to give a
default value for this field
[rEditedBy] [smalldatetime] NOT NULL ,
CONSTRAINT [PK_lkpLaborCost CodeRates] PRIMARY KEY CLUSTERED
(
[pkLaborCostCode RateId]
) WITH FILLFACTOR = 90 ON [PRIMARY]
) ON [PRIMARY]
GO
//
Here is the error I get when I click into the datagrid and the
'DefaultValuesN eeded' event fires
\\
System.Argument Exception was unhandled
Message="Column named rEditedBy cannot be found.
Parameter name: columnName"
ParamName="colu mnName"
Source="System. Windows.Forms"
StackTrace:
at
System.Windows. Forms.DataGridV iewCellCollecti on.get_Item(Str ing
columnName)
at
QmsUI.f080Admin Setup.dgvLaborC ostCodes_Defaul tValuesNeeded(O bject
sender, DataGridViewRow EventArgs e) in D:\DBuchanan MyDocuments\Vis ual
Studio 2005\Projects\Q ms_01\QmsUI\Adm inSetup.vb:line 286
at
System.Windows. Forms.DataGridV iew.OnDefaultVa luesNeeded(Data GridViewRowEven tArgs
e)
at
System.Windows. Forms.DataGridV iew.OnRowEnter( DataGridViewCel l&
dataGridViewCel l, Int32 columnIndex, Int32 rowIndex, Boolean
canCreateNewRow , Boolean validationFailu reOccurred)
at
System.Windows. Forms.DataGridV iew.SetCurrentC ellAddressCore( Int32
columnIndex, Int32 rowIndex, Boolean setAnchorCellAd dress, Boolean
validateCurrent Cell, Boolean throughMouseCli ck)
at System.Windows. Forms.DataGridV iew.OnCellMouse Down(HitTestInf o
hti, Boolean isShiftDown, Boolean isControlDown)
at
System.Windows. Forms.DataGridV iew.OnCellMouse Down(DataGridVi ewCellMouseEven tArgs
e)
at System.Windows. Forms.DataGridV iew.OnMouseDown (MouseEventArgs
e)
at System.Windows. Forms.Control.W mMouseDown(Mess age& m,
MouseButtons button, Int32 clicks)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.DataGridV iew.WndProc(Mes sage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at
System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Applicati on.ComponentMan ager.System.Win dows.Forms.Unsa feNativeMethods .IMsoComponentM anager.FPushMes sageLoop(Int32
dwComponentID, Int32 reason, Int32 pvLoopData)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo pInner(Int32
reason, ApplicationCont ext context)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo p(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Applicat ionContext
context)
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.OnRun ()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.DoApp licationModel()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.Run(S tring[]
commandLine)
at QmsUI.My.MyAppl ication.Main(St ring[] Args) in
17d14f5c-a337-4978-8281-53493378c1071.v b:line 81
at System.AppDomai n.nExecuteAssem bly(Assembly assembly, String[]
args)
at System.AppDomai n.ExecuteAssemb ly(String assemblyFile,
Evidence assemblySecurit y, String[] args)
at
Microsoft.Visua lStudio.Hosting Process.HostPro c.RunUsersAssem bly()
at System.Threadin g.ThreadHelper. ThreadStart_Con text(Object
state)
at System.Threadin g.ExecutionCont ext.Run(Executi onContext
executionContex t, ContextCallback callback, Object state)
at System.Threadin g.ThreadHelper. ThreadStart()
//
Is this a bug?
Is there some kind of work around?
dbuchanan

Dec 3 '05 #3
Hi There,

The same happened to me. I checked the datagridview properties at run time
(using the locals windows) and column names are all "" (an empty string?).

I solved it using the columns numbers instead of columns name.

i.e. use ".Cells(0).Valu e = False" instead of ".Cells("dtHide ").Value = False"

I hope this helps,

--
Sergio Torres C.
(505) 897 2041
_______________ ____
http://www.stcsys.com
_______________ ____

"dbuchanan" wrote:
Hello,

Is this a bug?
Is there some kind of work around?

I want to add default values for a few columns in my datagridview

I found the "DefaultValuesN eeded" event for the datagridview

I gave it a try using the example given in

http://msdn2.microsoft.com/en-us/lib...uesneeded.aspx

Here is my code
\\
Private Sub dgvDeviceTypes_ DefaultValuesNe eded(ByVal sender As
Object, ByVal e As System.Windows. Forms.DataGridV iewRowEventArgs )
Handles dgvDeviceTypes. DefaultValuesNe eded
'enter default values into lkpDeviceTypes
With e.Row
.Cells("dtHide" ).Value = False
.Cells("dtOrd") .Value = 0
.Cells("bMachTy pe").Value = True

End With
End Sub
//

I get the following error;
-----------------------
Column named rEditedBy cannot be found.
Parameter name: columnName
-----------------------
Here is my table;

pkDeviceTypeId smallint
DeviceName varchar(20)
Prefix char(4)
bMachType bit
dtOrd tinyint
dtHide bit
Below is the text of the error - Notice that the code cannot find the
column name. It seems that it thinks the column name is "columnName ";

System.Argument Exception was unhandled
Message="Column named rEditedBy cannot be found.
Parameter name: columnName"
ParamName="colu mnName"
Source="System. Windows.Forms"
StackTrace:
at
System.Windows. Forms.DataGridV iewCellCollecti on.get_Item(Str ing
columnName)
at
QmsUI.f080Admin Setup.dgvLaborC ostCodes_Defaul tValuesNeeded(O bject
sender, DataGridViewRow EventArgs e) in D:\DBuchanan MyDocuments\Vis ual
Studio 2005\Projects\Q ms_01\QmsUI\For m1.vb:line 287
at
System.Windows. Forms.DataGridV iew.OnDefaultVa luesNeeded(Data GridViewRowEven tArgs
e)
at
System.Windows. Forms.DataGridV iew.OnRowEnter( DataGridViewCel l&
dataGridViewCel l, Int32 columnIndex, Int32 rowIndex, Boolean
canCreateNewRow , Boolean validationFailu reOccurred)
at
System.Windows. Forms.DataGridV iew.SetCurrentC ellAddressCore( Int32
columnIndex, Int32 rowIndex, Boolean setAnchorCellAd dress, Boolean
validateCurrent Cell, Boolean throughMouseCli ck)
at System.Windows. Forms.DataGridV iew.OnCellMouse Down(HitTestInf o
hti, Boolean isShiftDown, Boolean isControlDown)
at
System.Windows. Forms.DataGridV iew.OnCellMouse Down(DataGridVi ewCellMouseEven tArgs
e)
at System.Windows. Forms.DataGridV iew.OnMouseDown (MouseEventArgs
e)
at System.Windows. Forms.Control.W mMouseDown(Mess age& m,
MouseButtons button, Int32 clicks)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.DataGridV iew.WndProc(Mes sage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at
System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Applicati on.ComponentMan ager.System.Win dows.Forms.Unsa feNativeMethods .IMsoComponentM anager.FPushMes sageLoop(Int32
dwComponentID, Int32 reason, Int32 pvLoopData)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo pInner(Int32
reason, ApplicationCont ext context)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo p(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Applicat ionContext
context)
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.OnRun ()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.DoApp licationModel()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.Run(S tring[]
commandLine)
at QmsUI.My.MyAppl ication.Main(St ring[] Args) in
17d14f5c-a337-4978-8281-53493378c1071.v b:line 81
at System.AppDomai n.nExecuteAssem bly(Assembly assembly, String[]
args)
at System.AppDomai n.ExecuteAssemb ly(String assemblyFile,
Evidence assemblySecurit y, String[] args)
at
Microsoft.Visua lStudio.Hosting Process.HostPro c.RunUsersAssem bly()
at System.Threadin g.ThreadHelper. ThreadStart_Con text(Object
state)
at System.Threadin g.ExecutionCont ext.Run(Executi onContext
executionContex t, ContextCallback callback, Object state)
at System.Threadin g.ThreadHelper. ThreadStart()
Is this a bug?
Is there some kind of work around?

thank you,
dbuchanan

Dec 3 '05 #4
Hello,

To find the column name, select your datagridview and go into edit
columns. Pick a column on the left pane and check the (name) property
on the right pane. This is the name you need to use in the code and by
default it goes something like "columnnameData GridViewTextBox Column". I
renamed each name to something shorter. ;)

Hope this helps,
Dom

Dec 8 '05 #5
Dominic,

I can't get it to work. When I use this code as you instructed like
this..

\\
Private Sub dgvDeviceTypes_ DefaultValuesNe eded(ByVal sender As Object,
ByVal e As System.Windows. Forms.DataGridV iewRowEventArgs ) Handles
dgvDeviceTypes. DefaultValuesNe eded
'enter default values into lkpDeviceTypes
With e.Row
'0' based, counting only displayed columns
.Cells("BMachTy peDataGridViewC heckBoxColumn") .Value = 0
'bMachType
.Cells("DtHideD ataGridViewChec kBoxColumn").Va lue = 0
'dtHide
End With
End Sub
//

....I get the following error
\\
System.IO.FileL oadException was unhandled
Message="The given assembly name or codebase was invalid. (Exception
from HRESULT: 0x80131047)"
Source="QmsUI"
StackTrace:
at QmsUI.f080Admin Setup.cboSelect Table_TextChang ed(Object
sender, EventArgs e)
at System.Windows. Forms.Control.O nTextChanged(Ev entArgs e)
at System.Windows. Forms.ComboBox. OnTextChanged(E ventArgs e)
at System.Windows. Forms.Control.s et_Text(String value)
at System.Windows. Forms.ComboBox. set_Text(String value)
at System.Windows. Forms.ComboBox. UpdateText()
at System.Windows. Forms.ComboBox. WmReflectComman d(Message& m)
at System.Windows. Forms.ComboBox. WndProc(Message & m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at
System.Windows. Forms.UnsafeNat iveMethods.Send Message(HandleR ef hWnd,
Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.Control.S endMessage(Int3 2 msg, IntPtr
wparam, IntPtr lparam)
at System.Windows. Forms.Control.R eflectMessageIn ternal(IntPtr
hWnd, Message& m)
at System.Windows. Forms.Control.W mCommand(Messag e& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.Scrollabl eControl.WndPro c(Message& m)
at System.Windows. Forms.Container Control.WndProc (Message& m)
at System.Windows. Forms.Form.WndP roc(Message& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at
System.Windows. Forms.UnsafeNat iveMethods.Call WindowProc(IntP tr wndProc,
IntPtr hWnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at System.Windows. Forms.NativeWin dow.DefWndProc( Message& m)
at System.Windows. Forms.Control.D efWndProc(Messa ge& m)
at System.Windows. Forms.Control.W mCommand(Messag e& m)
at System.Windows. Forms.Control.W ndProc(Message& m)
at System.Windows. Forms.ComboBox. WndProc(Message & m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.OnMessage(M essage& m)
at
System.Windows. Forms.Control.C ontrolNativeWin dow.WndProc(Mes sage& m)
at System.Windows. Forms.NativeWin dow.DebuggableC allback(IntPtr
hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at
System.Windows. Forms.UnsafeNat iveMethods.Disp atchMessageW(MS G& msg)
at
System.Windows. Forms.Applicati on.ComponentMan ager.System.Win dows.Forms.Unsa feNativeMethods .IMsoComponentM anager.FPushMes sageLoop(Int32
dwComponentID, Int32 reason, Int32 pvLoopData)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo pInner(Int32
reason, ApplicationCont ext context)
at
System.Windows. Forms.Applicati on.ThreadContex t.RunMessageLoo p(Int32
reason, ApplicationCont ext context)
at System.Windows. Forms.Applicati on.Run(Applicat ionContext
context)
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.OnRun ()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.DoApp licationModel()
at
Microsoft.Visua lBasic.Applicat ionServices.Win dowsFormsApplic ationBase.Run(S tring[]
commandLine)
at QmsUI.My.MyAppl ication.Main(St ring[] Args) in
17d14f5c-a337-4978-8281-53493378c1071.v b:line 81
at System.AppDomai n.nExecuteAssem bly(Assembly assembly, String[]
args)
at System.AppDomai n.ExecuteAssemb ly(String assemblyFile,
Evidence assemblySecurit y, String[] args)
at
Microsoft.Visua lStudio.Hosting Process.HostPro c.RunUsersAssem bly()
at System.Threadin g.ThreadHelper. ThreadStart_Con text(Object
state)
at System.Threadin g.ExecutionCont ext.Run(Executi onContext
executionContex t, ContextCallback callback, Object state)
at System.Threadin g.ThreadHelper. ThreadStart()
//
However, when I follow Sergio's suggestion (using the 0 based index of
displayed columns in the dgv) like this;
\\
Private Sub dgvDeviceTypes_ DefaultValuesNe eded(ByVal sender As Object,
ByVal e As System.Windows. Forms.DataGridV iewRowEventArgs ) Handles
dgvDeviceTypes. DefaultValuesNe eded
'enter default values into lkpDeviceTypes
With e.Row
'0' based, counting only displayed columns
.Cells(2).Value = 0 'bMachType
.Cells(4).Value = 0 'dtHide
End With
End Sub
//

I get no error. and it works.

I would prefer following your suggestion if it worked, because then I
don't have to recount columns or change the code when I remove a column
from the dgv.

Please help me understand just what you mean.

Thank you,
dbuchanan

Dec 8 '05 #6
Hi Dominic,

I appologize, - that error was unrelated to your solution.

I didn't understand it and it happened immediately after I tried your
solution.

Your method works! Thankyou for your input.

dbuchanan

Dec 8 '05 #7

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
2363
by: Bob | last post by:
During a form's development I noticed that when I changed bound dataset defintions with the dataset designer (for instance adding a column to one), when I come back and look at the form the ordering of the columns in the datagridviews has changed. The column order that I designed is totally different from what I had set using the datagridview column editor. As far as I'm concerned this is a bug that should be addressed real quick. its a...
2
1868
by: Bob | last post by:
I have noticed that as one adds related tables to a bindingsource and dataset(vs2005 Vb.Net Sql Server 2005), the TODO and following code that fills the datasets on form load are written to the formload event in the order in which you drag the tables to the form to make a gridview, the last table you drag is written to the top. Since you normallly start by dragging the parent table and then the child tables and grandchild tables, what...
4
1813
by: Ian Semmel | last post by:
I have a DataGridView bound to a DataTable which is keyed on an Identity. Now I want users to be able to fill in the table just by enetering data and tab between fields and across row boundaries. What I am having trouble with is deciding when to update the table and I keep on getting exceptions (like DbNull). Do you have to do an update at the end of each row ?
0
1751
by: Arne | last post by:
Hi, When adding a new row to my datagridview using the navigators addnew button the DefaultValuesNeeded is not triggered. How do I supply my new row with some default values then? Rgds, Arne
2
3277
by: Bob | last post by:
I have a CreatedOn field , datetime, which has GetDate() as the default value in SQL server 2000 table. When I create a new record in the table itself in enterprise manager, the field gets populated OK, but when I try to create a new record with a Microsoft datagridview control, I notice that the datecreated value does not get created. It looks as if the datagridview insert statements overrides the default value and prevent the default...
2
14690
by: michael sorens | last post by:
I tried to do a simple operation on a Windows Form in VS2005 inside a key_down handler: if (e.Control && e.Shift && e.KeyCode == Keys.V) { int selectedRowIndex = dataGridView.SelectedCells.RowIndex; dataGridView.Rows.AddCopy(selectedRowIndex); } So when the user presses Ctrl-Shft-V, a copy of the first row of a user's
0
1099
by: mrstrong | last post by:
Gday, I have a datagridview who's datasource is a view (from oracle) but it has a couple of combo boxes in it that when changed updates the underlying table that this view is based off. Anyway, it seems to work fine, however when I delete a row, and there is only one row it deletes fine however it calls the "defaultvaluesneeded" method for the datagridview and creates new IDs etc...
21
2421
by: Peter Bradley | last post by:
Hi all, This post is sort of tangentially related to my earlier posts on configuration files for DLLs. Does anyone know how to create typed DataSets using VS2005's new DataSet designer, but with the ability to configure the connection string via a config file? The designer seems to hard-code the connection string into the dataset itself, which just can't be right.
0
1300
by: frostbb | last post by:
Ok, We've got a bunch of apps that we've migrated from Net 1.0 to Net 2.0. The apps were basically upgraded using the VS2005 migrate. The user control that was using a DataGrid.IsSelected(i) in the original (Net 1.0) to find the 'Highlighted' rows in a datagrid is working fine. I've tried adding the DataGrid.IsSelected(i) code into a second migrated app to find the 'Highlighted' rows. In the 2nd program the
0
8650
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
8586
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
9140
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
0
9004
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
1
8864
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
5843
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
0
4351
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
0
4597
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
3
1987
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.