How to set Default focus on Button.

Answer:

defaultbutton property is used for setting focus on Button.

defaultbutton works as an Enter key.
When user press enter key from keyboard,then Button event automatically fired.

For Example:-

<form id="form1" runat="server" defaultbutton="btnSubmit">

<div>

<asp:Button ID="btnSubmit" runat="server" OnClick="btnSubmit_Click" Text="Submit"/>

</div>

</form>