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Change invalid control's background color (C#)

Posted By:papsantony       Posted Date: August 13, 2010    Points: 10    Category: Visual Studio    URL: http://www.dotnetspark.com  

Change invalid control's background color (C#)
 

<%@ Page Language="C#" %>

"server">

    void Page_PreRender()
    {
        foreach (BaseValidator valControl in Page.Validators)
        {
            WebControl assControl = (WebControl)Page.FindControl(valControl.ControlToValidate);
            if (!valControl.IsValid)
                assControl.BackColor = System.Drawing.Color.Yellow;
            else
                assControl.BackColor = System.Drawing.Color.White;
        }
    }

<html xmlns="http://www.w3.org/1999/xhtml" >
"Head1" runat="server">
    Show Validators

<body>
    <form id="form1" runat="server">
    

        
    
        id="lblFirstName"
        Text="First Name"
        AssociatedControlID="txtFirstName"
        Runat="server" />
        
    
        id="txtFirstName"
        Runat="server" />
    
        id="reqFirstName"
        ControlToValidate="txtFirstName"
        Text="(Required)"
        EnableClientScript="false"
        Runat="server" />   
     
    
        
    
        id="lblLastName"
        Text="Last Name"
        AssociatedControlID="txtLastName"
        Runat="server" />
        
    
        id="txtLastname"
        Runat="server" />
    
        id="reqLastName"
        ControlToValidate="txtLastName"
        Text="(Required)" 
        EnableClientScript="false"
        Runat="server" />   
     
     
     
     
        id="btnSubmit"
        Text="Submit"
        Runat="server" />   

    

    form>
body>
html>


     

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