I have a masked input that is only supposed to accept a phone number. The problem is that people can enter spaces, or even if you type a letter, it won't allow it, but it will put a space instead. Does anyone know how to not allow spaces? This is how my masked input looks like:
<telerik:RadMaskedTextBox ID="PhoneRadMaskedTextBox" runat="server"
Mask="(###) ### - #### Ext. #####"
PromptChar="">
</telerik:RadMaskedTextBox>
<telerik:RadMaskedTextBox ID="PhoneRadMaskedTextBox" runat="server"
Mask="(###) ### - #### Ext. #####"
PromptChar="">
</telerik:RadMaskedTextBox>