hi @band.atul,
User validation for your controls
Try the following snippets
<div>
User Name:
<asp:TextBox ID="txtUserName" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="rfvUserName" runat="server" ControlToValidate="txtUserName"
ErrorMessage="Please enter user name." Display="Dynamic" SetFocusOnError="true"></asp:RequiredFieldValidator>
<br />
Password:<asp:TextBox ID="txtPassword" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txtPassword"
ErrorMessage="Please enter password." Display="Dynamic" SetFocusOnError="true"></asp:RequiredFieldValidator><br />
<asp:Button ID="btnLogin" runat="server" Text="Login" />
</div>
