An ajax combo-box coming with 3.5 framework is not working the expected way when it comes in rebinding the combo-box and clearing the selection value. The normal combo-box.ClearSelection() wont work in this case. It is because the combo-box selection value is saved inside a hidden control which is not getting cleared. The above problem can be solved by including the following code snippet.
combobox1.ClearSelection();
foreach (Control control in combobox1.Controls)
{
if (control is HiddenField)
((HiddenField)control).Value = "0"; //Where 0 is the value associated with the first selection item.
}
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This works perfectly for me..How do we change the style of a ajax toolkit 3.5 combo box?
ReplyDeleteExcelent! Just what i was looking for! Thank you so much!
ReplyDeleteWould this bug could be also associated with the problem I am having? The problem is:
ReplyDeleteIf I remove all items from my combobox, there is no way that I can manually insert an item and make that one the selected one without getting an error:
“combobox has a SelectedIndex which is invalid because it does not exist in the list of items. Parameter Name:value”.
Right now I have something like this:
cmbLevel1Desc.Items.Clear();
int cmboboxLength = cmbLevel1Desc.Items.Count;
for (int i = 0; i < cmboboxLength; i++)
{
cmbLevel1Desc.Items.RemoveAt(0);
}
cmbLevel1Desc.Items.Insert(0, "");
cmbLevel1Desc.SelectedIndex = 0;
Can anybody advice me on this?
Thank you very much,
Al