The following topic shows how to use the InvalidInputColor property for the C1MaskedInput control; however, the InvalidInputColor property is available for all Input for ASP.NET AJAX controls.

Using the Designer

To display a color when the user enters improper input, complete the following tasks:

1.   Open the C1MaskedInput Tasks menu and click the ellipsis next to the InvalidInputColor property.

2.   Select a color that will appear when the user enters improper input. For this example, select Red.

Using HTML Markup

To display a color when the user enters improper input, use the following markup in the .aspx page:

<cc1:C1MaskedInput ID="C1MaskedInput1" runat="server" 

Mask="(999) 000-0000" 

      Text="412" 

InvalidInputColor="Red">

</cc1:C1MaskedInput>

Using Code

To display a color when the user enters improper input, double-click the Web page to create an event handler for the Load event. Enter the following code for the Page_Load event

•      Visual Basic

Me.C1MaskedInput1.Mask = "(999) 000-0000"

Me.C1MaskedInput1.Text = "412"

' Set invalid input color

Me.C1MaskedInput1.InvalidInputColor = Drawing.Color.Red

•      C#

this.C1MaskedInput1.Mask = "(999) 000-0000";

this.C1MaskedInput1.Text = "412";

// Set invalid input color

this.C1MaskedInput1.InvalidInputColor = Drawing.Color.Red;

This topic illustrates the following:

Run the project and type a non-numeric key, which is invalid, and notice that the control displays red text:

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