I have a window application. On one of the form, there is a listbox and a
few combox. The lstSchItem has a dataview as a datasource. The comboxes are
bind to its selected value but through the dataset table. Now when I change
the selection in the lstSchItem the comboxes are staying the same and not
reflecting the changes. I tried changing the binding to the dataview.table
but the comboxes are still not changing to reflect the different selection in
the lstSchItem. I appreciate some suggestions or help on how to correct this
problem.
Thank you, Alpha
cmbServiceItem. DataBindings.Ad d("SelectedValu e",dvSchItems.T able,
"ExtServiceItem ID");
cmbCycle1.DataB indings.Add("Se lectedValue", dvSchItems.Tabl e,
"ExtCycleID 1");
cmbCycle2.DataB indings.Add("Se lectedValue", dvSchItems.Tabl e,
"ExtCycleID 2");
cmbAndOr.DataBi ndings.Add("Sel ectedItem", dvSchItems.Tabl e, "AndOr");
private void ScheduleItems_L oad(object sender, System.EventArg s e)
{
try
{
cmbScheudle.Dat aSource = dsSchItems.Tabl es["Schedule"];
cmbScheudle.Dis playMember = "ScheduleNa me";
cmbScheudle.Val ueMember = "SchID";
if(cmbScheudle. Items.Count>0)
cmbScheudle.Sel ectedIndex = 0;
else
btnAdd.Enabled = false;
tblSchItems = dsSchItems.Tabl es["ScheduleIt ems"];
dvSchItems.Tabl e = tblSchItems;
if(cmbScheudle. Items.Count>0)
dvSchItems.RowF ilter = FilterExp + cmbScheudle.Sel ectedValue.ToSt ring();
dvSchItems.Sort = SortExp;
// lstSchItem.Data Source = dsSchItems.Tabl es["ScheduleIt ems"];
lstSchItem.Data Source = dvSchItems;
lstSchItem.Disp layMember = "SchItemCod e";
lstSchItem.Valu eMember = "SchItemID" ;
cmbServiceItem. DataSource = dsSchItems.Tabl es["ServiceIte ms"];
cmbServiceItem. DisplayMember = "ServiceNam e";
cmbServiceItem. ValueMember = "ServiceItemID" ;
cmbCycle1.DataS ource = dsSchItems.Tabl es["ServiceCyc le1"];
cmbCycle1.Displ ayMember = "CLU";
cmbCycle1.Value Member = "CycleID";
//Add a blank entry
DataRow BlankCyc2Item = dsSchItems.Tabl es["ServiceCyc le2"].NewRow();
BlankCyc2Item["CycleID"] = -1;
BlankCyc2Item["CLU"] = "";
dsSchItems.Tabl es["ServiceCyc le2"].Rows.Add(Blank Cyc2Item);
dsSchItems.Tabl es["ServiceCyc le2"].AcceptChanges( );
cmbCycle2.DataS ource = dsSchItems.Tabl es["ServiceCyc le2"];
cmbCycle2.Displ ayMember = "CLU";
cmbCycle2.Value Member = "CycleID";
cmbAndOr.Items. Add("");
cmbAndOr.Items. Add("And");
cmbAndOr.Items. Add("Or");
// lstSchItem.Data Bindings.Add("S electedValue",
dsSchItems.Tabl es["Schedule"], "SchID");
cmbServiceItem. DataBindings.Ad d("SelectedValu e",dsSchItems.T ables["ScheduleIt ems"], "ExtServiceItem ID");
cmbCycle1.DataB indings.Add("Se lectedValue",
dsSchItems.Tabl es["ScheduleIt ems"], "ExtCycleID 1");
cmbCycle2.DataB indings.Add("Se lectedValue",
dsSchItems.Tabl es["ScheduleIt ems"], "ExtCycleID 2");
cmbAndOr.DataBi ndings.Add("Sel ectedItem",
dsSchItems.Tabl es["ScheduleIt ems"], "AndOr");
//if no schedule items to the selected scheudle then disable all the
related selection box
if (lstSchItem.Ite ms.Count<=0)
{
// cmbServiceItem. SelectedValue = -1;
cmbServiceItem. Enabled = false;
// cmbCycle1.Selec tedValue = -1;
cmbCycle1.Enabl ed = false;
// cmbCycle2.Selec tedValue = -1;
cmbCycle2.Enabl ed = false;
// cmbAndOr.Select edValue = -1;
cmbAndOr.Enable d = false;
}
else
{
// lstSchItem.Sele ctedIndex = 0;
ExtServiceItemI D = Convert.ToInt32 (cmbServiceItem .SelectedValue) ;
ExtCycleID1 = Convert.ToInt32 (cmbCycle1.Sele ctedValue);
ExtCycleID2 = Convert.ToInt32 (cmbCycle2.Sele ctedValue);
AndOr = cmbAndOr.Select edItem.ToString ();
}
First = false;
}
catch(Exception ex)
{
MessageBox.Show ("Error binding the database to controls,please contact
your support person. : " + ex.ToString()
, "VMS - Control datasource error",
MessageBoxButto ns.OK, MessageBoxIcon. Error);
}
}
2  1965 
Hi,
"Alpha" <Al***@discussi ons.microsoft.c om> wrote in message
news:18******** *************** ***********@mic rosoft.com... I have a window application. On one of the form, there is a listbox and a
few combox. The lstSchItem has a dataview as a datasource. The comboxes
are
bind to its selected value but through the dataset table. Now when I
change
the selection in the lstSchItem the comboxes are staying the same and not
reflecting the changes. I tried changing the binding to the
dataview.table
but the comboxes are still not changing to reflect the different selection
in
the lstSchItem. I appreciate some suggestions or help on how to correct
this
problem.
If you bind lstSchItem to a DataView then you need to bind
SelectedValue/SelectedItem to the same DataView:
....
lstSchItem.Data Source = dvSchItems;
....
cmbServiceItem. DataBindings.Ad d("SelectedValu e", dvSchItems,
"ExtServiceItem ID");
....
HTH,
Greetings
Thank you, Alpha
cmbServiceItem. DataBindings.Ad d("SelectedValu e",dvSchItems.T able,
"ExtServiceItem ID");
cmbCycle1.DataB indings.Add("Se lectedValue", dvSchItems.Tabl e,
"ExtCycleID 1");
cmbCycle2.DataB indings.Add("Se lectedValue", dvSchItems.Tabl e,
"ExtCycleID 2");
cmbAndOr.DataBi ndings.Add("Sel ectedItem", dvSchItems.Tabl e, "AndOr");
private void ScheduleItems_L oad(object sender, System.EventArg s e)
{
try
{
cmbScheudle.Dat aSource = dsSchItems.Tabl es["Schedule"];
cmbScheudle.Dis playMember = "ScheduleNa me";
cmbScheudle.Val ueMember = "SchID";
if(cmbScheudle. Items.Count>0)
cmbScheudle.Sel ectedIndex = 0;
else
btnAdd.Enabled = false;
tblSchItems = dsSchItems.Tabl es["ScheduleIt ems"];
dvSchItems.Tabl e = tblSchItems;
if(cmbScheudle. Items.Count>0)
dvSchItems.RowF ilter = FilterExp + cmbScheudle.Sel ectedValue.ToSt ring();
dvSchItems.Sort = SortExp;
// lstSchItem.Data Source = dsSchItems.Tabl es["ScheduleIt ems"];
lstSchItem.Data Source = dvSchItems;
lstSchItem.Disp layMember = "SchItemCod e";
lstSchItem.Valu eMember = "SchItemID" ;
cmbServiceItem. DataSource = dsSchItems.Tabl es["ServiceIte ms"];
cmbServiceItem. DisplayMember = "ServiceNam e";
cmbServiceItem. ValueMember = "ServiceItemID" ;
cmbCycle1.DataS ource = dsSchItems.Tabl es["ServiceCyc le1"];
cmbCycle1.Displ ayMember = "CLU";
cmbCycle1.Value Member = "CycleID";
//Add a blank entry
DataRow BlankCyc2Item = dsSchItems.Tabl es["ServiceCyc le2"].NewRow();
BlankCyc2Item["CycleID"] = -1;
BlankCyc2Item["CLU"] = "";
dsSchItems.Tabl es["ServiceCyc le2"].Rows.Add(Blank Cyc2Item);
dsSchItems.Tabl es["ServiceCyc le2"].AcceptChanges( );
cmbCycle2.DataS ource = dsSchItems.Tabl es["ServiceCyc le2"];
cmbCycle2.Displ ayMember = "CLU";
cmbCycle2.Value Member = "CycleID";
cmbAndOr.Items. Add("");
cmbAndOr.Items. Add("And");
cmbAndOr.Items. Add("Or");
// lstSchItem.Data Bindings.Add("S electedValue",
dsSchItems.Tabl es["Schedule"], "SchID");
cmbServiceItem. DataBindings.Ad d("SelectedValu e",dsSchItems.T ables["ScheduleIt ems"],
"ExtServiceItem ID");
cmbCycle1.DataB indings.Add("Se lectedValue",
dsSchItems.Tabl es["ScheduleIt ems"], "ExtCycleID 1");
cmbCycle2.DataB indings.Add("Se lectedValue",
dsSchItems.Tabl es["ScheduleIt ems"], "ExtCycleID 2");
cmbAndOr.DataBi ndings.Add("Sel ectedItem",
dsSchItems.Tabl es["ScheduleIt ems"], "AndOr");
//if no schedule items to the selected scheudle then disable all the
related selection box
if (lstSchItem.Ite ms.Count<=0)
{
// cmbServiceItem. SelectedValue = -1;
cmbServiceItem. Enabled = false;
// cmbCycle1.Selec tedValue = -1;
cmbCycle1.Enabl ed = false;
// cmbCycle2.Selec tedValue = -1;
cmbCycle2.Enabl ed = false;
// cmbAndOr.Select edValue = -1;
cmbAndOr.Enable d = false;
}
else
{
// lstSchItem.Sele ctedIndex = 0;
ExtServiceItemI D = Convert.ToInt32 (cmbServiceItem .SelectedValue) ;
ExtCycleID1 = Convert.ToInt32 (cmbCycle1.Sele ctedValue);
ExtCycleID2 = Convert.ToInt32 (cmbCycle2.Sele ctedValue);
AndOr = cmbAndOr.Select edItem.ToString ();
}
First = false;
}
catch(Exception ex)
{
MessageBox.Show ("Error binding the database to controls,please contact
your support person. : " + ex.ToString()
, "VMS - Control datasource error",
MessageBoxButto ns.OK, MessageBoxIcon. Error);
}
}
I binded them to the dvSchItems.Tabl e. I removed the ".Table" and it works
now. Thank you very much.
Alpha
"Bart Mermuys" wrote: Hi,
"Alpha" <Al***@discussi ons.microsoft.c om> wrote in message
news:18******** *************** ***********@mic rosoft.com...I have a window application. On one of the form, there is a listbox and a
few combox. The lstSchItem has a dataview as a datasource. The comboxes
are
bind to its selected value but through the dataset table. Now when I
change
the selection in the lstSchItem the comboxes are staying the same and not
reflecting the changes. I tried changing the binding to the
dataview.table
but the comboxes are still not changing to reflect the different selection
in
the lstSchItem. I appreciate some suggestions or help on how to correct
this
problem.
If you bind lstSchItem to a DataView then you need to bind
SelectedValue/SelectedItem to the same DataView:
....
lstSchItem.Data Source = dvSchItems;
....
cmbServiceItem. DataBindings.Ad d("SelectedValu e", dvSchItems,
"ExtServiceItem ID");
....
HTH,
Greetings
Thank you, Alpha
cmbServiceItem. DataBindings.Ad d("SelectedValu e",dvSchItems.T able,
"ExtServiceItem ID");
cmbCycle1.DataB indings.Add("Se lectedValue", dvSchItems.Tabl e,
"ExtCycleID 1");
cmbCycle2.DataB indings.Add("Se lectedValue", dvSchItems.Tabl e,
"ExtCycleID 2");
cmbAndOr.DataBi ndings.Add("Sel ectedItem", dvSchItems.Tabl e, "AndOr");
private void ScheduleItems_L oad(object sender, System.EventArg s e)
{
try
{
cmbScheudle.Dat aSource = dsSchItems.Tabl es["Schedule"];
cmbScheudle.Dis playMember = "ScheduleNa me";
cmbScheudle.Val ueMember = "SchID";
if(cmbScheudle. Items.Count>0)
cmbScheudle.Sel ectedIndex = 0;
else
btnAdd.Enabled = false;
tblSchItems = dsSchItems.Tabl es["ScheduleIt ems"];
dvSchItems.Tabl e = tblSchItems;
if(cmbScheudle. Items.Count>0)
dvSchItems.RowF ilter = FilterExp + cmbScheudle.Sel ectedValue.ToSt ring();
dvSchItems.Sort = SortExp;
// lstSchItem.Data Source = dsSchItems.Tabl es["ScheduleIt ems"];
lstSchItem.Data Source = dvSchItems;
lstSchItem.Disp layMember = "SchItemCod e";
lstSchItem.Valu eMember = "SchItemID" ;
cmbServiceItem. DataSource = dsSchItems.Tabl es["ServiceIte ms"];
cmbServiceItem. DisplayMember = "ServiceNam e";
cmbServiceItem. ValueMember = "ServiceItemID" ;
cmbCycle1.DataS ource = dsSchItems.Tabl es["ServiceCyc le1"];
cmbCycle1.Displ ayMember = "CLU";
cmbCycle1.Value Member = "CycleID";
//Add a blank entry
DataRow BlankCyc2Item = dsSchItems.Tabl es["ServiceCyc le2"].NewRow();
BlankCyc2Item["CycleID"] = -1;
BlankCyc2Item["CLU"] = "";
dsSchItems.Tabl es["ServiceCyc le2"].Rows.Add(Blank Cyc2Item);
dsSchItems.Tabl es["ServiceCyc le2"].AcceptChanges( );
cmbCycle2.DataS ource = dsSchItems.Tabl es["ServiceCyc le2"];
cmbCycle2.Displ ayMember = "CLU";
cmbCycle2.Value Member = "CycleID";
cmbAndOr.Items. Add("");
cmbAndOr.Items. Add("And");
cmbAndOr.Items. Add("Or");
// lstSchItem.Data Bindings.Add("S electedValue",
dsSchItems.Tabl es["Schedule"], "SchID");
cmbServiceItem. DataBindings.Ad d("SelectedValu e",dsSchItems.T ables["ScheduleIt ems"],
"ExtServiceItem ID");
cmbCycle1.DataB indings.Add("Se lectedValue",
dsSchItems.Tabl es["ScheduleIt ems"], "ExtCycleID 1");
cmbCycle2.DataB indings.Add("Se lectedValue",
dsSchItems.Tabl es["ScheduleIt ems"], "ExtCycleID 2");
cmbAndOr.DataBi ndings.Add("Sel ectedItem",
dsSchItems.Tabl es["ScheduleIt ems"], "AndOr");
//if no schedule items to the selected scheudle then disable all the
related selection box
if (lstSchItem.Ite ms.Count<=0)
{
// cmbServiceItem. SelectedValue = -1;
cmbServiceItem. Enabled = false;
// cmbCycle1.Selec tedValue = -1;
cmbCycle1.Enabl ed = false;
// cmbCycle2.Selec tedValue = -1;
cmbCycle2.Enabl ed = false;
// cmbAndOr.Select edValue = -1;
cmbAndOr.Enable d = false;
}
else
{
// lstSchItem.Sele ctedIndex = 0;
ExtServiceItemI D = Convert.ToInt32 (cmbServiceItem .SelectedValue) ;
ExtCycleID1 = Convert.ToInt32 (cmbCycle1.Sele ctedValue);
ExtCycleID2 = Convert.ToInt32 (cmbCycle2.Sele ctedValue);
AndOr = cmbAndOr.Select edItem.ToString ();
}
First = false;
}
catch(Exception ex)
{
MessageBox.Show ("Error binding the database to controls,please contact
your support person. : " + ex.ToString()
, "VMS - Control datasource error",
MessageBoxButto ns.OK, MessageBoxIcon. Error);
}
}
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