命令按钮永远不会被击中

我的e.CommandName行上有一个断点，但这行从未被命中。 我还尝试添加一个可以写入浏览器的 catch 块，但我只是收到一个错误"页面无法显示"，这是出现问题时抛出的典型 Chrome 错误，与我的项目无关。 下面是我的代码，是什么阻止了我的e.CommandName线被击中？

C# 页

protected void Page_Load(object sender, EventArgs e)
{
  if (!IsPostBack) { LoadGrid(); }
}
protected void LoadGrid()
{   
    this.datagrid12.Visible = false;
    this.datagrid12.Visible = true;
    _dataSet = SQLQueryToPullInData
    this.datagrid12.DataSource = _dataSet;
    this.datagrid12.DataBind();
}

全球阿萨克

斯

void Application_Error(object sender, EventArgs e)
{ 
  Exception CurrentException = Server.GetLastError();
  Server.ClearError();
if (CurrentException != null)
{
    try
    {
        using (StreamWriter sw = new StreamWriter(Server.MapPath("ErrorLog.txt")))
        {
            sw.WriteLine(CurrentException.ToString());
            sw.Close();
        }
    }
    catch (Exception ex) { }
  }
}

.HTML

<asp:DataGrid runat="server" ID="datagrid12" AutoGenerateColumns="false" ShowFooter="true" OnItemCommand="datagrid12_ItemCommand" >
<Columns>
<asp:TemplateColumn HeaderText="ID" ItemStyle-HorizontalAlign="Center" HeaderStyle-HorizontalAlign="Center" ItemStyle-Width="40" Visible="true">
    <ItemTemplate>
        <asp:LinkButton ForeColor="White" ID="btnEdit" runat="server" CausesValidation="True" CommandName="Edit" Text='<%# Eval("uID") %>' CommandArgument='<%# Eval("uID") %>'>
        </asp:LinkButton>
    </ItemTemplate>
</asp:TemplateColumn>
<asp:BoundColumn DataField="uID" HeaderText="uID" Visible="false"></asp:BoundColumn>
<asp:BoundColumn DataField="name" HeaderText="Name"></asp:BoundColumn>

从 Global.Asax 写入文件时出错

System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.Web.HttpException (0x80004005): Maximum request length exceeded.
   at System.Web.HttpRequest.GetEntireRawContent()
   at System.Web.HttpRequest.FillInFormCollection()
   at System.Web.HttpRequest.EnsureForm()
   at System.Web.HttpRequest.get_Form()
   at System.Web.HttpRequest.get_HasForm()
   at System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull)
   at System.Web.UI.Page.DeterminePostBackMode()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at ASP.pages_usersreport_aspx.ProcessRequest(HttpContext context) in c:'Windows'Microsoft.NET'Framework'v4.0.30319'Temporary ASP.NET Files'root'cfdef70b'4f768444'App_Web_0tprbakj.1.cs:line 0
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

我尝试过的其他代码

protected void datagrid12_ItemCommand(object source, DataGridCommandEventArgs e)
    {
    try
    {
        if (e.CommandName == "Edit")
        {
            LinkButton btn = ((LinkButton)e.Item.FindControl("btnEdit"));
            string uid = btn.CommandArgument;
        }
    }
    catch (Exception exception) { throw exception; }
    }

编辑

我更新了我的 html 以添加这个

OnClick="LinkButton_Click"

并添加了命令事件以显示以下内容：

protected void LinkButton_Click(Object sender, EventArgs e)
{
  string commandArgument = (sender as LinkButton).CommandArgument;
  string commandName = (sender as LinkButton).CommandName;
  if (commandName == "Edit")
  {
     Response.Redirect("../page2.aspx", false);
  }
}

但在这种情况下，也不会命中string commandName上的断点。

如果我查看控制台输出，当我的页面无法加载时，这就是我所看到的，对我来说没有什么描述性的，但可能对另一个人有意义。

发布 http://localhost:1234/page2.aspx 网：：ERR_Connection_Reset

编辑关于超时
我将查询设置为不超时（或者我认为是这样），并且我的MaxHttpCollectionKeys也设置为非常高的数字，以免超时。 查询运行正常，并按预期显示结果。 问题在于当我从显示的网格中按下链接按钮时。

SqlCommand.CommandTimeout = 0;
<add key="aspnet:MaxHttpCollectionKeys" value="20000"/>

要修复
为了解决这个问题，我不得不将以下 2 行添加到我的 web.config 文件中

<system.web>
  <httpRuntime maxRequestLength="1048576" executionTimeout="3600" />
</system.web>
<system.webServer>
  <security>
    <requestFiltering>
        <requestLimits maxAllowedContentLength="1073741824" />
    </requestFiltering>
  </security>
</system.webServer>

void Application_Error(object sender, EventArgs e)
{
    try
    {
        Exception exception = Server.GetLastError();
        Server.ClearError();
        if(exception != null)
        {
          // Do Some Stuff!
        }
    }
    catch(Exception ex)
    {
    }
}