页面加载Loading(.net)

C#:

protected override void OnInit(EventArgs e)
{
    Response.Write("<div id='mydiv'>_</div>");
    Response.Write("<script type='text/javascript'>document.getElementById('mydiv').innerHTML = '<img src=\"images/ajax-loader.gif\" />';</script>");
    Response.Write("<script type='text/javascript'>");
    Response.Write("function ShowWait(){}");
    Response.Write("function StartShowWait(){document.getElementById('mydiv').style.display = '';}");
    Response.Write("StartShowWait();");
    Response.Write("</script>");
    Response.Flush();
}

HTML:

document.getElementById('mydiv').style.display = "none";

==================================================

孟子的进度效果：

Response.Write("<div id='mydiv' >");
Response.Write("_");
Response.Write("</div>");
Response.Write("<script>mydiv.innerText = '';</script>");
Response.Write("<script language=javascript>;");
Response.Write("var dots = 0;var dotmax = 10;function ShowWait()");
Response.Write("{var output; output = '正在装载页面';dots++;if(dots>=dotmax)dots=1;");
 

Response.Write("for(var x = 0;x < dots;x++){output += '·';}mydiv.innerText =  output;}");
Response.Write("function StartShowWait(){mydiv.style.visibility = 'visible'; ");
Response.Write("window.setInterval('ShowWait()',1000);}");
Response.Write("function HideWait(){mydiv.style.visibility = 'hidden';");
Response.Write("window.clearInterval();}");
Response.Write("StartShowWait();</script>");
Response.Flush();
Thread.Sleep(10000);