How to use the CausesValidation property of TextBox on earth?

chuxu · December 22nd, 2008, 10:20 AM

Code:

<div>
    Please enter an email adress:<br />
        <asp:TextBox ID="TextBox1" runat="server"  CausesValidation="False"></asp:TextBox>
        <asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" 
            ErrorMessage="RegularExpressionValidator" ControlToValidate="TextBox1" 
            ValidationExpression="\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*">you must 
        enter an valid email adress</asp:RegularExpressionValidator>
        <br />
    </div>

why the page also causes an validation when textbox loses its crusor while CausesValidation="False"??
Appreciate your answers!

Imar · December 23rd, 2008, 12:57 PM

Well, on earth the CausesValidation property behaves differently from what you expect:

From: http://msdn.microsoft.com/en-us/libr...alidation.aspx

Quote:

Gets or sets a value indicating whether validation is performed when the TextBox control is set to validate when a postback occurs.

Instead, you may want to look at the EnableClientScript property of the validator....

Hope this helps,

Imar