Asp.net无法识别自定义用户控件求助：附可编辑GridView控件代码

It sounds like your custom EditableGridView user control isn't being picked up by ASP.NET—let's walk through the most common fixes for this issue:

1. Ensure the User Control is Registered in the Parent Page #

ASP.NET needs explicit registration to recognize custom user controls in your web page. Add this directive at the top of the .aspx page where you're trying to use the control:

<%@ Register TagPrefix="uc" TagName="EditableGridView" Src="~/editableGridView.ascx" %>

Then, reference the control in your page markup like this:

<uc:EditableGridView ID="MyEditableGrid" runat="server" />

• Adjust the Src path if your control is in a subfolder (e.g., Src="~/Controls/editableGridView.ascx").

2. Fix Truncated Event Handler Attribute #

Looking at your control code, the OnRowCancelingEdit attribute is truncated:

OnRowCancelingEdit="EditableGrid_Row..."

This will cause a compilation error because ASP.NET can't resolve the incomplete method name. Update it to the full handler name, and make sure the matching method exists in your code-behind:

OnRowCancelingEdit="EditableGrid_RowCancelingEdit"

3. Validate CodeBehind/Inherits Attributes #

Double-check that the CodeBehind and Inherits values in your .ascx file match your actual code structure:

<%@ Control Language="C#" AutoEventWireup="true" CodeBehind="editableGridView.ascx.cs" Inherits="WebApplication1.EditableGridView" %>

• Confirm the CodeBehind path points to the correct .cs file location.
• Ensure your code-behind class is named EditableGridView and lives in the WebApplication1 namespace:

  namespace WebApplication1
  {
      public partial class EditableGridView : System.Web.UI.UserControl
      {
          // Your event handlers and logic here
      }
  }
  

4. Check for Compilation Errors in the Control #

Make sure your code-behind has no syntax errors. For example, your edit/cancel handlers should follow the correct signature:

protected void EditableGrid_RowEditing(object sender, GridViewEditEventArgs e)
{
    EditableGrid.EditIndex = e.NewEditIndex;
    // Rebind your data source here to refresh the grid
}

protected void EditableGrid_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
    EditableGrid.EditIndex = -1;
    // Rebind your data source here to exit edit mode
}

5. Verify File Locations #

Ensure both the .ascx and .ascx.cs files are in the same directory, and that the parent page can access them (no permission issues, correct relative paths).

If you've gone through these steps and still have issues, try cleaning and rebuilding your project—sometimes cached compilation files can cause recognition problems.

内容的提问来源于stack exchange，提问作者user1238784