Fatal编程技术网
  • asp.net/
  • Asp.net 通过循环更新textbox文本属性

Asp.net 通过循环更新textbox文本属性

asp.net

Asp.net 通过循环更新textbox文本属性,asp.net,Asp.net,我想从循环内更新Asp.Net中textbox控件的文本属性。我曾尝试将Ajax updatepanel与计时器控件一起使用，但无法更新文本属性。我从上周开始一直在搜索此控件，但无法找到任何答案。非常感谢您的帮助 <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px"> </asp:ListBox> <asp:Button ID="Button2" runa

我想从循环内更新Asp.Net中textbox控件的文本属性。我曾尝试将Ajax updatepanel与计时器控件一起使用，但无法更新文本属性。我从上周开始一直在搜索此控件，但无法找到任何答案。非常感谢您的帮助

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
详情如下:

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
这是我的按钮点击事件在这段代码中你可以看到我正在更新

TxtContent.Text

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
在循环中，文本由一个名为

ReturnBodyText()

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
之后，我将文本分配给viewstate，以便在timer tick事件中调用文本并更新textbox文本属性，然后在timer tick事件中将viewstate值分配给textbox

protected void Button4_Click(object sender, EventArgs e)
{
    ArrayList FilePath = (ArrayList)ViewState["ArrayList"];
    int i = 0;
    int b = 1;
    foreach(string[] sr in FilePath)
    {
        string Month = sr[i];
        string datewithzero;
        datewithzero = String.Format("{0:00}", b);
        string[] FilesArray = (string[])listfiles(Month, datewithzero).ToArray(typeof(string));

        foreach (string FileNameWithExtension in FilesArray)
        {
            ListBox4.Items.Add(FileNameWithExtension);
            TxtContent.Text = ReturnBodyText(Month, datewithzero, FileNameWithExtension);
            ViewState["Content"] = TxtContent.Text;
            Timer1.Enabled = true;
            Timer1_Tick(ViewState["Content"], e);
        }
        i = i + 1;
        b = b + 1;
    }
}

protected void Timer1_Tick(object sender, EventArgs e)
{
    TxtContent.Text =(string) ViewState["Content"];
    TxtContent.DataBind();
}

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
我希望上面的描述能帮助你们理解我的问题

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
完整的aspx文件和代码如下所示：

    <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
  • Aspx代码：

        <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>


        <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>


        <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>


        <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>


        <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
      • 遗憾的是，您的代码对我帮助不大。然而，我写了这篇文章，我相信它能部分满足你的需求。但在我看来，没有什么能做的了。代码如下：

          <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
      .aspx文件：

          <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>

      <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1.Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <asp:Timer runat="server" ID="Timer1" Interval="1000" Enabled="true" 
            ontick="Timer1_Tick" />
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
            </Triggers>
            <ContentTemplate>
                <asp:Label ID="Label1" runat="server" Text=""></asp:Label>
                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
            </ContentTemplate>
        </asp:UpdatePanel>
    </div>
    </form>
</body>
</html>
      aspx.cs文件：

          <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>

      using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Threading;

namespace WebApplication1
{
    public partial class Default : System.Web.UI.Page
    {
        protected static string keeper;
        protected static bool inUse = false;
        protected void Page_Load(object sender, EventArgs e) {}
        protected void Button1_Click(object sender, EventArgs e)
        {
            Thread worker = new Thread(new ThreadStart(workerFunction));
            worker.Start();
            return;
        }
        protected void workerFunction()
        {
            inUse = true;
            for (int i = 0; i < 3; i++)
            {
                TextBox1.Text += "foo";
                keeper = TextBox1.Text;
                Thread.Sleep(1000);
            }
            inUse = false;
            keeper = "";
        }
        protected void Timer1_Tick(object sender, EventArgs e)
        {
            if (inUse)
            {
                TextBox1.Text = Convert.ToString(keeper);
            }
        }
    }
}

      使用系统；
使用System.Collections.Generic；
使用System.Linq；
使用System.Web；
使用System.Web.UI；
使用System.Web.UI.WebControl；
使用系统线程；
命名空间WebApplication1
{
公共部分类默认值：System.Web.UI.Page
{
受保护的静态管柱保持器；
受保护的静态bool inUse=false；
受保护的无效页面加载（对象发送方，事件参数e）{}
受保护的无效按钮1\u单击（对象发送者，事件参数e）
{
线程工作线程=新线程（新线程开始（workerFunction））；
worker.Start（）；
返回；
}
受保护的void workerFunction（）
{
因纽斯=真；
对于（int i=0；i<3；i++）
{
TextBox1.Text+=“foo”；
keeper=TextBox1.Text；
睡眠（1000）；
}
因纽斯=假；
keeper=“”；
}
受保护的无效计时器1_刻度（对象发送方，事件参数e）
{
如果（使用）
{
TextBox1.Text=Convert.ToString（keeper）；
}
}
}
}
      遗憾的是，你的代码对我帮助不大。然而，我写了这篇文章，我相信它能部分满足你的需求。但在我看来，没有什么能做的了。代码如下：

          <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>
      .aspx文件：

          <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>

      <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication1.Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:ScriptManager ID="ScriptManager1" runat="server" />
        <asp:Timer runat="server" ID="Timer1" Interval="1000" Enabled="true" 
            ontick="Timer1_Tick" />
        <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
            <Triggers>
                <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
            </Triggers>
            <ContentTemplate>
                <asp:Label ID="Label1" runat="server" Text=""></asp:Label>
                <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
                <asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
            </ContentTemplate>
        </asp:UpdatePanel>
    </div>
    </form>
</body>
</html>
      aspx.cs文件：

          <asp:ListBox ID="ListBox1" runat="server" Height="509px" Width="59px">
    </asp:ListBox>

    <asp:Button ID="Button2" runat="server" Height="26px" onclick="Button2_Click" 
        Text="To be pressed first" Width="130px" />

    <asp:Button ID="Button3" runat="server" onclick="Button3_Click" 
        Text="To be pressed 2nd" Width="131px" Height="26px" />

    <asp:ScriptManager ID="ScriptManager1" runat="server">
    </asp:ScriptManager>

            <asp:Timer ID="Timer1" runat="server" Interval="1000" 
        ontick="Timer1_Tick" Enabled="False">
            </asp:Timer>
    <asp:UpdatePanel ID="UpdatePanel1" runat="server" UpdateMode="Conditional">
        <ContentTemplate>
            <asp:TextBox ID="TxtContent" runat="server" Height="508px" AutoPostBack="True" 
                TextMode="MultiLine"></asp:TextBox>
            <asp:Button ID="Button5" runat="server" Height="26px" onclick="Button4_Click" 
                Text="To be pressed Third" Width="122px" />

        </ContentTemplate>
        <Triggers>
            <asp:AsyncPostBackTrigger ControlID="Timer1" EventName="Tick" />
        </Triggers>
    </asp:UpdatePanel>

</div>
</form>

      using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Threading;

namespace WebApplication1
{
    public partial class Default : System.Web.UI.Page
    {
        protected static string keeper;
        protected static bool inUse = false;
        protected void Page_Load(object sender, EventArgs e) {}
        protected void Button1_Click(object sender, EventArgs e)
        {
            Thread worker = new Thread(new ThreadStart(workerFunction));
            worker.Start();
            return;
        }
        protected void workerFunction()
        {
            inUse = true;
            for (int i = 0; i < 3; i++)
            {
                TextBox1.Text += "foo";
                keeper = TextBox1.Text;
                Thread.Sleep(1000);
            }
            inUse = false;
            keeper = "";
        }
        protected void Timer1_Tick(object sender, EventArgs e)
        {
            if (inUse)
            {
                TextBox1.Text = Convert.ToString(keeper);
            }
        }
    }
}

      使用系统；
使用System.Collections.Generic；
使用System.Linq；
使用System.Web；
使用System.Web.UI；
使用System.Web.UI.WebControl；
使用系统线程；
命名空间WebApplication1
{
公共部分类默认值：System.Web.UI.Page
{
受保护的静态管柱保持器；
受保护的静态bool inUse=false；
受保护的无效页面加载（对象发送方，事件参数e）{}
受保护的无效按钮1\u单击（对象发送者，事件参数e）
{
线程工作线程=新线程（新线程开始（workerFunction））；
worker.Start（）；
返回；
}
受保护的void workerFunction（）
{
因纽斯=真；
对于（int i=0；i<3；i++）
{
TextBox1.Text+=“foo”；
keeper=TextBox1.Text；
睡眠（1000）；
}
因纽斯=假；
keeper=“”；
}
受保护的无效计时器1_刻度（对象发送方，事件参数e）
{
如果（使用）
{
TextBox1.Text=Convert.ToString（keeper）；
}
}
}
}
      您能确认您的计时器是否正常工作吗？当你调试时，你正在点击Timer1\u Tick事件？如果它正常，你能发布所有相关的代码吗？包括.aspx内容。那会让我们重现你的问题。虽然我尊重那些不用它就能解决这个问题的人，但我不是他们中的一员。@Bobby是的，我的Timer1\u Tick事件正在调试模式下运行。执行后是否有空的文本框或错误的值？我试过你的密码；谢谢你的回复，我在循环执行过程中得到了一个空文本框，但它在循环结束时显示了值。循环的最后一个值显示在文本框中，我想要这些值，循环过程中的值。你能确认你的计时器工作吗？当你调试时，你正在点击Timer1\u Tick事件？如果它正常，你能发布所有相关的代码吗？包括.aspx内容。那会让我们重现你的问题。虽然我尊重那些不用它就能解决这个问题的人，但我不是他们中的一员。@Bobby是的，我的Timer1\u Tick事件正在调试模式下运行。执行后是否有空的文本框或错误的值？我试过你的密码；谢谢你的回复，我在循环执行过程中得到了一个空的文本框，但是它在循环结束时会显示值。循环的最后一个值会显示在文本框中，我想要这些值，在循环过程中也会显示这些值