GridView template field events - asp.net

Question

I have added Checkbox and Radio buttons as column values to the GridView in runtime.
Now, i am unable to fire Checkbox_CheckedChanged event upon Checkbox.checked
Any suggestions on how to call event ? Below is the Grid i implemented.
Below is the source code:
1) Grid Init
Dim COUNT As Integer = 0
For i As Integer = 0 To ListHeaderDataFieldArray.Count - 1
If ListHeaderDataFieldArray(i) = Me.CRMSignCond Then
Dim TemplateCol As New TemplateField
TemplateCol.ItemStyle.HorizontalAlign = HorizontalAlign.Center
TemplateCol.ItemStyle.Width = New Unit(RowChildWidth)
TemplateCol.HeaderText = ListHeaderTextArray(i)
TemplateCol.ItemTemplate = New GridViewTemplate(DataControlRowType.DataRow, ListHeaderDataFieldArray(i))
GridviewChild.Columns.Add(TemplateCol)
Else
If ListHeaderTextArray(i) = "Target Sign" Then
Dim colItem As TemplateField = New TemplateField
colItem.HeaderText = ListHeaderTextArray(i)
'colItem.DataField = ListHeaderDataFieldArray(i)
colItem.SortExpression = ListHeaderDataFieldArray(i)
colItem.ItemStyle.Width = New Unit(RowChildWidth)
GridviewChild.Columns.Add(colItem)
ElseIf ListHeaderTextArray(i) = "Consolidate" Then
Dim colItem As TemplateField = New TemplateField
colItem.HeaderText = ListHeaderTextArray(i)
'colItem.DataField = ListHeaderDataFieldArray(i)
colItem.SortExpression = ListHeaderDataFieldArray(i)
colItem.ItemStyle.Width = New Unit(RowChildWidth)
GridviewChild.Columns.Add(colItem)
ElseIf ListHeaderTextArray(i) = "Signing Group" Then
Dim colItem As TemplateField = New TemplateField
colItem.HeaderText = ListHeaderTextArray(i)
'colItem.DataField = ListHeaderDataFieldArray(i)
colItem.SortExpression = ListHeaderDataFieldArray(i)
colItem.ItemStyle.Width = New Unit(RowChildWidth)
GridviewChild.Columns.Add(colItem)
Else
Dim colItem As BoundField = New BoundField
colItem.HeaderText = ListHeaderTextArray(i)
colItem.DataField = ListHeaderDataFieldArray(i)
colItem.SortExpression = ListHeaderDataFieldArray(i)
colItem.ItemStyle.Width = New Unit(RowChildWidth)
GridviewChild.Columns.Add(colItem)
End If
End If
2) Adding Controls to the GridView Columns in "RowDataBound" event.
Protected Sub GridviewChild_RowDataBound(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewRowEventArgs) Handles GridviewChild.RowDataBound
If e.Row.RowType = DataControlRowType.DataRow AndAlso Not String.IsNullOrEmpty(CRMSignCond) Then
Dim s As String = ""
Dim lbValue As Label = DirectCast(e.Row.Cells(5).FindControl("lbValue"), Label)
e.Row.Cells(5).Attributes.Add("onmousemove", "Show('" + lbValue.Text + "')")
e.Row.Cells(5).Attributes.Add("onmouseout", "this.style.backgroundColor=this.oldcolor;Hide();")
End If
Dim cbTargetSign As New CheckBox
Dim rbConsolidate As New RadioButton
Dim tbSignGrp As New TextBox
cbTargetSign.ID = "chkSelect"
cbTargetSign.AutoPostBack = True
rbConsolidate.ID = "rbConsolidate"
tbSignGrp.ID = "tbConsolidate"
tbSignGrp.Width = 25
If Not e.Row.RowIndex = -1 Then
e.Row.Cells(6).Controls.Add(cbTargetSign)
e.Row.Cells(4).Controls.Add(tbSignGrp)
For i As Integer = 0 To 1
rbConsolidate = New RadioButton()
If i = 0 Then
rbConsolidate.Text = "YES"
Else
rbConsolidate.Text = "NO"
End If
'ii.Location = New Point(20, tt)
'ii.Tag = fileArray(i)
'tt = tt + 20
rbConsolidate.GroupName = "Consolidate"
e.Row.Cells(7).Controls.Add(rbConsolidate)
Next
End If
End Sub
Regards,
VK

Answer 1

You are adding and binding events programmatically in code behind and adding them to the GridView. And since dynamic Controls need to be recreated on every time the page is loaded to function properly, you should make sure the RowDataBound event is triggered on every Page Load, and that includes a PostBack.
So I'm guessing you do this (like you would normally):
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
If Not Page.IsPostBack Then
GridView1.DataSource = mySource
GridView1.DataBind
End If
End Sub
Change it to
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
GridView1.DataSource = mySource
GridView1.DataBind
End Sub