JavaScript to disable button after click
<script language=”javascript” type=”text/javascript”>
function disableButton(sender,group)
{
Page_ClientValidate(group);
if (Page_IsValid)
{
sender.disabled = “disabled”;
__doPostBack(sender.name, ”);
}
}
</script>
and in Html
<div>
Enter Name :-
<asp:TextBox ID=”TextBox1″ runat=”server”></asp:TextBox>
<asp:RequiredFieldValidator ID=”RequiredFieldValidator1″ runat=”server” ControlToValidate=”TextBox1″
ErrorMessage=”RequiredFieldValidator”>*</asp:RequiredFieldValidator><br />
<asp:Button runat=”server” ID=”btnSave” Text=”Save” OnClick=”Save” OnClientClick=”disableButton(this,”)” UseSubmitBehavior=”false” />
</div>
If there is Validation Group it will be like this :-
Add this Javascript code :-
<script language=”javascript” type=”text/javascript”>
function disableButton(sender,group)
{
Page_ClientValidate(group);
if (Page_IsValid)
{
sender.disabled = “disabled”;
__doPostBack(sender.name, ”);
}
}
</script>
and HTML will be :-
<div>
Enter Name :-
<asp:TextBox ID=”TextBox1″ runat=”server”></asp:TextBox>
<asp:RequiredFieldValidator ID=”RequiredFieldValidator1″ runat=”server” ControlToValidate=”TextBox1″ ValidationGroup=”i”
ErrorMessage=”RequiredFieldValidator”>*</asp:RequiredFieldValidator> <br />
<asp:Button runat=”server” ID=”btnSave” Text=”Save” OnClick=”Save” OnClientClick=”disableButton(this,’i’)” UseSubmitBehavior=”false” ValidationGroup=”i” />
</div>
