在按钮点击后禁用它直到操作完成

好久没有写东西了，今天将以前给同事写的一段代码改了一下共享出来。这段代码用于实现在点击按钮后禁用它直到操作完成。有更好的方法大家可以讨论！

<%@ Page Language="C#" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<script runat="server">
    protected void Page_Load (object sender, EventArgs e)
    {
        btn.Attributes.Add ("onclick",
            Page.GetPostBackEventReference (btn, "") +
            ";this.value='Submitting';this.disabled = true;");
        lbtn.Attributes.Add ("onclick",
            "this.innerText='Submitting';this.disabled = true;");
        ibtn.Attributes.Add ("onclick",
            Page.GetPostBackEventReference (ibtn, "") +
            ";this.alt='Submitting';this.disabled = true;");

        //
        // ASP.NET 2.0 above
        //
        //btn.Attributes.Add ("onclick",
        //    ClientScript.GetPostBackEventReference (btn, "") +
        //    ";this.value='Submitting';this.disabled = true;");
        //lbtn.Attributes.Add ("onclick",
        //    "this.innerText='Submitting';this.disabled = true;");
        //ibtn.Attributes.Add ("onclick",
        //    ClientScript.GetPostBackEventReference (ibtn, "") +
        //    ";this.alt='Submitting';this.disabled = true;");
        //
        // OR 
        //
        //btn.OnClientClick =
        //    ClientScript.GetPostBackEventReference (btn, "") + 
        //    ";this.value='Submitting';this.disabled = true;";
        //lbtn.OnClientClick = "this.innerText='Submitting';this.disabled = true;";
        //ibtn.OnClientClick = ClientScript.GetPostBackEventReference (ibtn, "") +
        //    ";this.alt='Submitting';this.disabled = true;";        
    }
    protected void btn_Click (object sender, EventArgs e)
    {
        System.Threading.Thread.Sleep (2000);
        Label1.Text = DateTime.Now.ToString ();
    }

    protected void lbtn_Click (object sender, EventArgs e)
    {
        LinkButtonClickCount++;
        System.Threading.Thread.Sleep (2000);
        Label1.Text = "link button:" + DateTime.Now.ToString ()
            + "<br/>count:" + LinkButtonClickCount.ToString ();
    }

    protected void ibtn_Click (object sender, ImageClickEventArgs e)
    {
        ImageButtonClickCount++;
        System.Threading.Thread.Sleep (2000);
        Label1.Text = "image button:" + DateTime.Now.ToString ()
            + "<br/>count:" + ImageButtonClickCount.ToString ();
    }

    int LinkButtonClickCount
    {
        get
        {
            object tmp = ViewState["LinkButtonClickCount"];
            return (tmp == null) ? 0 : (int)tmp;
        }
        set { ViewState["LinkButtonClickCount"] = value; }
    }
    int ImageButtonClickCount
    {
        get
        {
            object tmp = ViewState["ImageButtonClickCount"];
            return (tmp == null) ? 0 : (int)tmp;
        }
        set { ViewState["ImageButtonClickCount"] = value; }
    }
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>无标题页</title>
</head>
<body>
    <form id="form1" runat="server">
        <div>
            <asp:Button ID="btn" runat="server" Text="What time is it, please!" 
            OnClick="btn_Click" />
            <asp:LinkButton ID="lbtn" runat="server" OnClick="lbtn_Click">
        What time is it, please!</asp:LinkButton>
            <asp:ImageButton ID="ibtn" runat="server" 
              AlternateText="What time is it, please!"
              Height="30px" OnClick="ibtn_Click" 
              ImageUrl="http://www.ikea.com/ms/img/menu/products/32x32/clocks_32x32.gif" 
            />
            <br />
            <asp:Label ID="Label1" runat="server" Text=""></asp:Label>
        </div>
    </form>
</body>
</html>


posted on 2007-11-07 11:35  Easy Company  阅读(1057)  评论(0)  编辑  收藏  举报

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