在文本asp.net c＃之后将焦点放在文本框中

Question

I am trying to focus in textbox after text in asp.net c# but I am unable to do it

my c# code is given below, please tell me where i am wrong:-

 TextBox txtindex = (TextBox)RptTask.Items[Nextindex].FindControl("TxtDuration");
 txtindex.Focus();

Answer 1

Apply Focus Method on Text in Page_PreRender

//pre-render code as given below, 
protected void Page_PreRender(object sender, EventArgs e)
{
   try
     {
       TextBox txtindex = (TextBox)RptTask.Items[Nextindex].FindControl("TxtDuration");
       txtindex.Focus();
     }
   catch(Exception ee)
    {
    }
} 

Hope It will Help!