As i am getting some values in a string variable in a selectedindexchanged event and the getting values in a string which i can't able to use it any other event why what is the reson ?plz tell me...

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As i am getting some values in a string variable in a selectedindexchanged event and the getting values in a string which i can't able to use it any other event why what is the reson ?plz tell me ....

Posted 29-Mar-12 20:46pm

palani23

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Sebastian T Xavier 30-Mar-12 2:48am

are you in a desktop application or web application?

[no name] 30-Mar-12 2:54am

web application?

[no name] 30-Mar-12 3:00am

Protected Sub displayto_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles displayto.SelectedIndexChanged

For i As Integer = 0 To displayto.Items.Count - 1 Step +1
If (displayto.Items.Count > 0) Then
If (displayto.Items(i).Selected = True) Then
'lststr.Add(displayto.Items(i).Value)
If (displaystr = "") Then
displaystr = displayto.Items(i).Value
Else
displaystr += "," + displayto.Items(i).Value
End If
End If
End If
Next

End Sub

[no name] 30-Mar-12 3:01am

displaystr is my string variable i want to use this variable into the save click event but i didn't get any values in the string ....

[no name] 30-Mar-12 3:43am

plz give a example to get the values ....

swapnilKumbhar 30-Mar-12 2:51am

post your code..

[no name] 30-Mar-12 2:54am

Protected Sub displayto_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles displayto.SelectedIndexChanged

For i As Integer = 0 To displayto.Items.Count - 1 Step +1
If (displayto.Items.Count > 0) Then
If (displayto.Items(i).Selected = True) Then
'lststr.Add(displayto.Items(i).Value)
If (displaystr = "") Then
displaystr = displayto.Items(i).Value
Else
displaystr += "," + displayto.Items(i).Value
End If
End If
End If
Next

End Sub

[no name] 30-Mar-12 2:57am

displaystr is my string variable i want to use this variable into the save click event but i didn't get any values in the string ....

2 solutions

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Ganesan Senthilvel · Answer 1 · 2012-03-29T20:55:00

Solution 1

I think you are talking about System.EventArgs parameter in seletedindexchanged event. In the below example, don't think any issue in passing 'recvString' after this event get invoked.

C#

private void listBox1_SelectedIndexChanged(object sender, System.EventArgs e)
{
   String recvString = e.ToString();
}

Posted 29-Mar-12 20:55pm

Ganesan Senthilvel

Comments

[no name] 30-Mar-12 3:06am

Protected Sub displayto_SelectedIndexChanged(sender As Object, e As System.EventArgs) Handles displayto.SelectedIndexChanged

For i As Integer = 0 To displayto.Items.Count - 1 Step +1
If (displayto.Items.Count > 0) Then
If (displayto.Items(i).Selected = True) Then
'lststr.Add(displayto.Items(i).Value)
If (displaystr = "") Then
displaystr = displayto.Items(i).Value
Else
displaystr += "," + displayto.Items(i).Value
End If
End If
End If
Next

End Sub

Sebastian T Xavier · Answer 2 · 2012-03-29T21:12:00

Solution 2

If it is a web application, there is a chance of losing value of displaystr when postback occurs. I suggest you to keep value of this in a hiddenfield for further use....

Posted 29-Mar-12 21:12pm

Sebastian T Xavier