using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Text;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
StringBuilder sb = new StringBuilder();
sb.Append("var controlID;\r\n");
sb.Append("function UpdatePanelSetFocus() {\r\n");
sb.Append(" try {\r\n");
sb.Append(" $get(controlID).focus();\r\n");
sb.Append(" $get(controlID).select();\r\n");
sb.Append(" } catch(e) { }\r\n");
sb.Append("}\r\n");
sb.Append("function UpdatePanelFocusScript(clientID) {\r\n");
sb.Append(" controlID = clientID;\r\n");
sb.Append(" setTimeout(\"UpdatePanelSetFocus()\", 500);\r\n");
sb.Append("}\r\n");
Page.ClientScript.RegisterClientScriptBlock(this.GetType(), "UpdatePanelSetFocus", sb.ToString(), true);
CheckBox1.Attributes.Add("onclick", "UpdatePanelFocusScript('" + TextBox1.ClientID + "')");
}
}
protected void CheckBox1_CheckedChanged(object sender, EventArgs e)
{
TextBox1.Focus();
}
}