CodeClass.IsCodeType 属性

项目
08/12/2011

获取是否可以从此对象中获取 CodeType 对象。

命名空间： EnvDTE
程序集： EnvDTE（在 EnvDTE.dll 中）

语法

声明
ReadOnly Property IsCodeType As Boolean
    Get

bool IsCodeType { get; }

property bool IsCodeType {
    bool get ();
}

abstract IsCodeType : bool

function get IsCodeType () : boolean

属性值

类型：System.Boolean
一个布尔值，如果可获取 CodeType 对象，则返回 true；否则返回 false。

备注

返回该代码元素是否为代码类型。如果是，则可使用查询接口或将该代码元素强制转换为 CodeType 对象。当 Kind 为 vsCMElementClass、vsCMElementInterface、vsCMElementDelegate、vsCMElementStruct 或 vsCMElementEnum 时，此值为 true。

提示

在进行某些类型的编辑之后，代码模型元素（如类、结构、函数、特性、委托等）的值可能是非确定性的，这意味着不能指望它们的值总是保持不变。有关更多信息，请参见使用代码模型查找代码 (Visual Basic) 中的“代码模型元素的值可能会更改”一节。

示例

Public Sub CodeClassExample(ByVal dte As DTE2) 
    ' Before running this example, open a code document from a
    ' project and place the insertion point inside a class definition
    Try
        Dim objTextSel As TextSelection
        Dim objCodeCls As CodeClass
        Dim objCodeType As CodeType
        Dim objCMElem As vsCMElement
        objTextSel = CType(dte.ActiveDocument.Selection, TextSelection)
        objCodeCls = CType(objTextSel.ActivePoint.CodeElement(vsCMElement.vsCMElementClass), CodeClass)
        ' Add DocComment to CodeClass objCodeClass.
        objCodeCls.DocComment = "<DOC>DocComment for the CodeClass object</DOC>"
        MessageBox.Show(objCodeCls.DocComment)
        ' Test if a CodeType object is obtainable from the CodeClass
        If objCodeCls.IsCodeType Then
            ' then we can cast the CodeClass to a CodeType.
            objCodeType = CType(objCodeCls, CodeType)
        Else
            ' The CodeClass object is not a CodeType but is
            ' some Kind of element.
            objCMElem = objCodeCls.Kind
        End If
    Catch ex As Exception
        MessageBox.Show(ex.Message)
    End Try
End Sub

public void CodeClassExample(DTE2 dte)
{ 
   // Before running this example, open a code document from a
   // project and place the insertion point inside a class definition
   try
   {
      TextSelection objTextSel;
      CodeClass objCodeCls;
      CodeType objCodeType;
      vsCMElement objCMElem;
      objTextSel = (TextSelection)dte.ActiveDocument.Selection;
      objCodeCls = (CodeClass)objTextSel.ActivePoint.get_CodeElement(vsCMElement.vsCMElementClass);
      // Add DocComment to CodeClass objCodeClass.
      objCodeCls.DocComment = "<DOC>DocComment for the CodeClass object</DOC>";
      MessageBox.Show(objCodeCls.DocComment);
      // Test if a CodeType object is obtainable from the CodeClass
      if (objCodeCls.IsCodeType)
      { // then we can cast the CodeClass to a CodeType.
         objCodeType = (CodeType)objCodeCls;
      }
      else // The CodeClass object is not a CodeType but is
      {    // some Kind of element.
         objCMElem = objCodeCls.Kind;
      }
   }
   catch (Exception ex)
   { 
      MessageBox.Show(ex.Message);
   }
}