Retreving Value of Textbox dynamically added into Table

[Robert]

I am not able to retrieve the value of dynamically added text box to table.
Kindly help me to find mistake on this code.


Error

Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information about
the error and where it originated in the code.

Exception Details: System.ArgumentOutOfRangeException: Specified argument
was out of the range of valid values. Parameter name: index

Source Error:


Line 52: Dim txtBox As New TextBox()
Line 53:
Line 54:txtBox = CType(Table1.Rows(1).FindControl ("txtBox1"), TextBox)
Line 55: Response.Write(txtBox.Text)
Line 56:


Source File: c:\inetpub\wwwroot\DragDrop\WebForm2.aspx.vb Line: 54

Stack Trace:


[ArgumentOutOfRangeException: Specified argument was out of the range of
valid values.
Parameter name: index]
System.Web.UI.ControlCollection.get_Item(Int32 index)
System.Web.UI.WebControls.TableRowCollection.get_Item(Int32 index)
DragDrop.WebForm2.Button1_Click(Object sender, EventArgs e) in c:\inetpub\wwwroot\DragDrop\WebForm2.aspx.vb:54

System.Web.UI.WebControls.Button.OnClick(EventArgs e)
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(St ring
eventArgument)
System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl,
String eventArgument)
System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
System.Web.UI.Page.ProcessRequestMain()





Source Code

Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles MyBase.Load
'Put user code to initialize the page here
If Not Page.IsPostBack Then
Dim IdWidth As New Unit("5%")
Dim QWidth As New Unit("95%")
Dim Height As New Unit("20%")
Dim myARow As New TableRow()
Dim myACell1 As New TableCell()
Dim myACell2 As New TableCell()
Dim myACell3 As New TableCell()
myACell1.Width = IdWidth
myACell2.Width = QWidth
myARow.Cells.Add(myACell1)
myARow.Cells.Add(myACell2)
myARow.Cells.Add(myACell3)
Dim txtBox As New TextBox()
Dim hidtxtBoxValue As New HtmlInputHidden()
Dim hidtxtQW As New HtmlInputHidden()
txtBox.ID = "txtBox" & 1
txtBox.Width = QWidth
myACell2.Controls.Add(txtBox)
Table1.Rows.Add(myARow)

End If

End Sub

Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles Button1.Click
Dim txtBox As New TextBox()

txtBox = CType(Table1.Rows(1).FindControl("txtBox1"),TextBox)
Response.Write(txtBox.Text)

End Sub

[Raymond Naseef]

It sounds like your table has only one row in it. As with most indexes, row
indexes are 0-based (i.e., the first row is Rows(0)).

"Robert" <j_robertraj@rediffmail.com> wrote in message
news:3c9b10f6$1@10.1.10.29...
>
> I am not able to retrieve the value of dynamically added text box to
table.
> Kindly help me to find mistake on this code.
>
>
> Error
>
> Description: An unhandled exception occurred during the execution of the
> current web request. Please review the stack trace for more information
about
> the error and where it originated in the code.
>
> Exception Details: System.ArgumentOutOfRangeException: Specified argument
> was out of the range of valid values. Parameter name: index
>
> Source Error:
>
>
> Line 52: Dim txtBox As New TextBox()
> Line 53:
> Line 54:txtBox = CType(Table1.Rows(1).FindControl ("txtBox1"), TextBox)
> Line 55: Response.Write(txtBox.Text)
> Line 56:
>
>
> Source File: c:\inetpub\wwwroot\DragDrop\WebForm2.aspx.vb Line: 54
>
> Stack Trace:
>
>
> [ArgumentOutOfRangeException: Specified argument was out of the range of
> valid values.
> Parameter name: index]
> System.Web.UI.ControlCollection.get_Item(Int32 index)
> System.Web.UI.WebControls.TableRowCollection.get_Item(Int32 index)
> DragDrop.WebForm2.Button1_Click(Object sender, EventArgs e) in
c:\inetpub\wwwroot\DragDrop\WebForm2.aspx.vb:54
>
> System.Web.UI.WebControls.Button.OnClick(EventArgs e)
>
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePo
stBackEvent(String
> eventArgument)
> System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler
sourceControl,
> String eventArgument)
> System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
> System.Web.UI.Page.ProcessRequestMain()
>
>
>
>
>
> Source Code
>
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
System.EventArgs)
> Handles MyBase.Load
> 'Put user code to initialize the page here
> If Not Page.IsPostBack Then
> Dim IdWidth As New Unit("5%")
> Dim QWidth As New Unit("95%")
> Dim Height As New Unit("20%")
> Dim myARow As New TableRow()
> Dim myACell1 As New TableCell()
> Dim myACell2 As New TableCell()
> Dim myACell3 As New TableCell()
> myACell1.Width = IdWidth
> myACell2.Width = QWidth
> myARow.Cells.Add(myACell1)
> myARow.Cells.Add(myACell2)
> myARow.Cells.Add(myACell3)
> Dim txtBox As New TextBox()
> Dim hidtxtBoxValue As New HtmlInputHidden()
> Dim hidtxtQW As New HtmlInputHidden()
> txtBox.ID = "txtBox" & 1
> txtBox.Width = QWidth
> myACell2.Controls.Add(txtBox)
> Table1.Rows.Add(myARow)
>
> End If
>
> End Sub
>
> Private Sub Button1_Click(ByVal sender As Object, ByVal e As
System.EventArgs)
> Handles Button1.Click
> Dim txtBox As New TextBox()
>
> txtBox = CType(Table1.Rows(1).FindControl("txtBox1"),TextBox)
> Response.Write(txtBox.Text)
>
> End Sub
>

[ranamk]

hi all

i do have the same problem mentioned above

Exception Details: System.ArgumentOutOfRangeException: Specified argument
was out of the range of valid values. Parameter name: index

i tried to use 0 index but not working
infact when i click on the button the row counts in my table becomes zero
and i dont know why????

please i appreaciate any kind of help
best regards,
Rana

[ranamk]

plz if anyone has any clue???
this is my code:

' grd is a gridveiw in the form, it contains data and it works fine
' tb is the table

Public Sub up_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles up.Click

For j As Integer = 1 To Me.grd.Rows.Count
Dim mygrade As New TextBox

mygrade.ID = "mygrade_" & j
mygrade.BorderStyle = BorderStyle.None

Dim myrow As New TableRow
Dim mycell As New TableCell


mycell.Controls.Add(mygrade)
myrow.Cells.Add(mycell)
tb.Rows.Add(myrow)

Next

END Sub

' the above code is working great
my problem is in the followingrow counts is zero)


Protected Sub Ad_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles Ad.Click

For Each c As Control In tb.Rows(0).Cells(0).Controls
Response.Write(c.GetType().ToString & "<br/>")
If c.GetType().ToString = "System.Web.UI.WebControls.TextBox" Then
MsgBox(c.GetType.ToString)
Dim t As TextBox = CType(c, TextBox)
t.Text = "whatever"
End If
Next


End Sub

[ranamk]

hey guys i did found the solution
the problem is that we always have a page reload on button click
and the solution was to add the rows and the cells at page load and not at the click.

regards,
rana