| Author: ramana 30 Aug 2008 | Member Level: Bronze | Rating:  Points: 6 |
CustomValidator is suitable for u r requirement.Below code is useful to u.
.aspx:
<form id="form1" runat="server">
<div>
<asp:TextBox id="txtProductCode" Runat="server" />
<asp:CustomValidator id="valProductCode" ControlToValidate="txtProductCode" Text="(Invalid product code)" OnServerValidate="valProductCode_ServerValidate" Runat="server" ValidateEmptyText="true"/>
<asp:Button id="btnSubmit" Text="Submit" Runat="server" OnClick="btnSubmit_Click" />
</div>
</form>
.aspx.cs:
public void valProductCode_ServerValidate(object source, ServerValidateEventArgs args)
{
if (args.Value.Length > 0)
{
args.IsValid = true;
}
else
{
txtProductCode.BackColor = System.Drawing.Color.Yellow;
args.IsValid = false;
}
}
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