Here is the basic code: <telerik:RadTextBox ID="RadTextBox1" runat="server" TextMode="MultiLine" Enabled="False"> </telerik:RadTextBox>
The RadTextBox (and other input controls as appropriate) should have an aspx property to automatically trim leading & trailing whitespace from user input. This will help ensure that good quality data is passed to the database. The only way this can currently be done is to custom code "mytextbox.Text.Trim();" for every control on the page, before the property is sent to the database.
RadMaskedTextBox has a RequireCompleteText property that makes it a requirement that the full mask of the input be satisfied. The RadInputManager MaskedTextBoxSetting does not contain the same property. Please add this property with the same functionality to the MaskedTextBoxSetting.