Don't allow spaces in TextBox asp.net
I am trying to avoid spaces in the Textbox and prevent the user to enter
any spaces. I tried
<ajaxToolkit:FilteredTextBoxExtender ID="Filteredtextboxextender2"
runat="server"
FilterType="Custom" InValidChars=" "
TargetControlID="tx_username">
</ajaxToolkit:FilteredTextBoxExtender>
but it didn't work. Is there any other solutions ?
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