EnvDTE刪除類屬性

Question

我有一個非常簡單的查詢（EnvDTE），「我怎麼刪除一個類中的屬性」。

[Authorize] 
class SomeController 
{ ... } 

我試過 -

authorizeAttr.StartPoint.CreateEditPoint().Delete(authorizeAttr.EndPoint); 

它的工作原理，但留下空的方括號。

[] 
class SomeController 
{ ... } 

我只是想刪除屬性，完整的行（應該是這樣）。請幫忙。

感謝

Answer 1

你需要你的類EnvDTE80.CodeClass2然後刪除屬性在一個循環是這樣的：

EnvDTE80.CodeClass2 codeClass; 
... 
while (codeClass.Attributes.Count > 0) { 
    ((EnvDTE80.CodeAttribute2)codeClass.Attributes.Item(1)).Delete(); // Attributes array starts from 1 not 0 
} 

這是一個完整的例子：

using System; 
using System.ComponentModel; 
using System.ComponentModel.Design; 
using System.Windows.Forms; 
using System.Windows.Forms.Design; 

namespace WindowsFormsApplication1 
{ 
    [MyCustom("Example 1", 1), MyCustom("Example 2", 2)] 
    public class MyForm : MyBaseForm 
    { 
     #region Windows Form Designer generated code 

     /// <summary> 
     /// Required method for Designer support - do not modify 
     /// the contents of this method with the code editor. 
     /// </summary> 
     private void InitializeComponent() 
     { 
      this.SuspendLayout(); 
      // 
      // MyForm 
      // 
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); 
      this.ClientSize = new System.Drawing.Size(617, 450); 
      this.Name = "MyForm"; 
      this.ResumeLayout(false); 

     } 

     #endregion 

     public MyForm() 
     { 
      InitializeComponent(); 
     } 
    } 

    [Designer(typeof(MyBaseFormDesigner), typeof(IRootDesigner))] 
    public partial class MyBaseForm : Form 
    { 
     #region Windows Form Designer generated code 

     /// <summary> 
     /// Required method for Designer support - do not modify 
     /// the contents of this method with the code editor. 
     /// </summary> 
     private void InitializeComponent() 
     { 
      this.SuspendLayout(); 
      // 
      // MyBaseForm 
      // 
      this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F); 
      this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; 
      this.ClientSize = new System.Drawing.Size(391, 337); 
      this.ResumeLayout(false); 

     } 

     #endregion 

     public MyBaseForm() 
     { 
      InitializeComponent(); 
     } 
    } 

    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true, Inherited = true)] 
    public class MyCustomAttribute : Attribute 
    { 
     public string Text { get; set; } 
     public int IntValue { get; set; } 

     public MyCustomAttribute(string text, int intValue) 
     { 
      this.Text = text; 
      this.IntValue = intValue; 
     } 
    } 

    public class MyBaseFormDesigner : DocumentDesigner 
    { 
     public override void Initialize(IComponent component) 
     { 
      base.Initialize(component); 
      Verbs.Add(new DesignerVerb("Remove Attributes", OnRemoveAttributes));    
     } 

     protected virtual void OnRemoveAttributes(object sender, EventArgs args) 
     { 
      EnvDTE._DTE dte = GetService(typeof(EnvDTE._DTE)) as EnvDTE._DTE; 
      EnvDTE80.CodeClass2 codeClass = GetCodeClass(dte.ActiveDocument.ProjectItem.FileCodeModel.CodeElements, "MyForm"); 
      while (codeClass.Attributes.Count > 0) { 
       ((EnvDTE80.CodeAttribute2)codeClass.Attributes.Item(1)).Delete(); // Attributes array starts from 1 not 0 
      } 
     } 

     private static EnvDTE80.CodeClass2 GetCodeClass(EnvDTE.CodeElements codeElements, string name) 
     { 
      EnvDTE80.CodeClass2 codeClass = null; 
      foreach (EnvDTE.CodeElement item in codeElements) { 
       if (item.Kind == EnvDTE.vsCMElement.vsCMElementClass) { 
        codeClass = item as EnvDTE80.CodeClass2; 
       } else if (item.Kind == EnvDTE.vsCMElement.vsCMElementNamespace) {      
        codeClass = GetCodeClass(((EnvDTE.CodeNamespace)item).Members, name); 
       } 
       if (codeClass != null && codeClass.Name == name) break; 
      } 
      return codeClass; 
     } 
    } 
} 

測試這個例子編譯它，以設計器模式打開MyForm，右鍵單擊表單並選擇「刪除屬性」，MyForm中的所有屬性都應該被刪除。