Default focus on control in asp.net
You can set default focus on particular control of your webpage.
<form> tag has one attribute called “defaultfocus” you
can assign the ID of control to which you want default focus.
Assigning ID is case-sensitive here.
Code snippet:
<form id="form1" defaultfocus= "TextBox1"
runat="server"
>
<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>