HI:
    I has develop a web tool for my company, the tool's function is very simple:operator input a SN in a textbox, then the tool will display the result under the textbox, but I don't know how to set the focus on this textbox, it is very inconvenience for operator to click the textbox everytime. Please help me! Very thanks

Liuyan

I haven't actually done this yet, but try this article
http://www.reflectionit.nl/InitialFocus.aspx
mark

You can also use javascript to do this also.

Thanks you!!!

Nickliuyan

 This is in response to the URL you posted above:

http://www.reflectionit.nl/InitialFocus.aspx

I have been looking all over for a VB version of that code and can't find it.

I have used a C# to VB converter vut when running this code, I get an error that says:

Specified cast is not valid.
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.InvalidCastException: Specified cast is not valid.


Line 41:
Line 42: ' Set Focus on the selected item of a RadioButtonList
Line 43: Dim rbl As RadioButtonList = control
Line 44: If Not (rbl Is Nothing) Then
Line 45: Dim suffix As String = "_0"

Here is that function in VB.

' Set Focus on the selected item of a RadioButtonList
                Dim rbl As RadioButtonList = control
                If Not (rbl Is Nothing) Then
                    Dim suffix As String = "_0"
                    Dim t As Integer = 0
                    Dim li As ListItem
                    For Each li In rbl.Items
                        If li.Selected Then
                            suffix = "_" + t.ToString()
                            Exit For
                        End If
                        t += 1
                    Next li
                    s.Append(suffix)
                End If

What is "control" in the context of your code?

"Control" is a .net type so this is probably what's causing the problem.