ListView find item and populate texbox

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Hi folks, I have a ListView that contains customer name, address and email address. I need to find the email address and then populate a textbox.

Code below but not working error message;

An exception of type 'System.ArgumentOutOfRangeException' occurred in mscorlib.dll but was not handled in user code
Additional information: Index was out of range. Must be non-negative and less than the size of the collection

My code so far...

C#

int idx = ListView1.SelectedIndex;
TextBox GarageEmail.Text = (TextBox)this.ListView1.Items[idx].FindControl("SupplierEmailAddress");

Posted 27-Apr-15 1:25am

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Karthik_Mahalingam 27-Apr-15 7:35am

your so far code is wrong.
what is SupplierEmailAddress ?
post your aspx code also

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Kornfeld Eliyahu Peter · Answer 1 · 2015-04-27T02:15:00

SelectedIndex is "The zero-based index of the selected item in a ListView control. The default is -1, which indicates that no item is currently selected." (from MSDN[^])...So you should check if it is NOT -1 to be sure that any item has been selected...

C#

if(ListView1.SelectedIndex != -1)
{
  int idx = ListView1.SelectedIndex;
  TextBox GarageEmail.Text = (TextBox)this.ListView1.Items[idx].FindControl("SupplierEmailAddress");
}

Now for the second line...It is completely wrong? The left side part if the text property of a TextBox (not clear from where it comes), where the right side is a TextBox control...You probably meant to do something like this:

C#

TextBox GarageEmail = (TextBox)this.ListView1.Items[idx].FindControl("SupplierEmailAddress");