Home > ASP.Net > RegularExpressionValidator change color of textbox

RegularExpressionValidator change color of textbox


try this example

<script language="javascript" type="text/javascript">
    function check1(source, args)
            var txt = document.getElementById('<%= txt_Name.ClientID %>');
            if(args.Value.length == 0)
                txt.style.background = '#f1f4fb';
                args.IsValid = false;
                txt.style.background = '#ffffff';
                args.IsValid = true;


<asp:TextBox ID="txt_Name" runat="server" BorderStyle="Dotted" BorderColor="#C0C0FF" Width="204px"></asp:TextBox>&nbsp;<br />
                        <asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txt_Name"
                            ErrorMessage="Your name is required." Font-Size="9pt"></asp:RequiredFieldValidator>
                            <asp:CustomValidator ID="CustomValidator1" runat="server"
                                ClientValidationFunction="check1" ControlToValidate="txt_Name" ValidateEmptyText='true'
                                ErrorMessage="CustomValidator" Font-Size="9pt" Display="None"></asp:CustomValidator>

Good Luck

Categories: ASP.Net
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