對於加載時間比較長的ASP.Net頁面,我們可以在客戶端浏覽器中顯示進度條來顯示頁面正在裝載。下面就是具體的實現過程:
新建項目,名字為WebPortal,在項目類型中選擇Visual C#項目或者Visual Basic項目都可;
在模板類型中選擇ASP.Net Web應用程序;
位置裡輸入:http://localhost/WebPortal;
添加新項:名字為ShowProgress的Web窗體。
在您的Web窗體ShowProgress.ASPx上添加任何其他的Web服務器控件。
在ShowProgress.ASPx上單擊右鍵,點“查看代碼”,在最上面輸入:
Visual C# .Net代碼
using System.Threading;
Visual Basic .Net代碼
Imports System.Threading
在Page_Load事件裡輸入: Visual C# .Net代碼
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 = ''正在裝載頁面'';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);
Visual Basic .Net代碼
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 = ''正在裝載頁面'';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)
在ShowProgress.ASPx窗體的Html的中輸入:
<script>
HideWait();
</script>
點在浏覽器中查看即可。