CodeFunction2.CanOverride 属性
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
获取或设置是否可以重写此函数。
public:
property bool CanOverride { bool get(); void set(bool value); };public:
property bool CanOverride { bool get(); void set(bool value); };[System.Runtime.InteropServices.DispId(50)]
public bool CanOverride { [System.Runtime.InteropServices.DispId(50)] get; [System.Runtime.InteropServices.DispId(50)] set; }[<System.Runtime.InteropServices.DispId(50)>]
[<get: System.Runtime.InteropServices.DispId(50)>]
[<set: System.Runtime.InteropServices.DispId(50)>]
member this.CanOverride : bool with get, setPublic Property CanOverride As Boolean属性值
如果可以重写此函数，则布尔值为 true；否则为 false。
实现
- 属性
示例
Sub CanOverrideExample(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
' Retrieve the CodeClass at the insertion point.
Dim sel As TextSelection = _
CType(dte.ActiveDocument.Selection, TextSelection)
Dim cls As CodeClass = _
CType(sel.ActivePoint.CodeElement( _
vsCMElement.vsCMElementClass), CodeClass)
' Find the class's overridable methods.
Dim ovrrides As String
Dim elem As CodeElement
For Each elem In cls.Members
If elem.Kind = vsCMElement.vsCMElementFunction AndAlso _
CType(elem, CodeFunction).CanOverride Then
ovrrides &= elem.Name & vbCrLf
End If
Next
MsgBox(cls.Name & " has the following overridable methods:" & _
vbCrLf & vbCrLf & ovrrides)
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Sub
public void CanOverrideExample(DTE2 dte)
{
// Before running this example, open a code document from a project
// and place the insertion point inside a class definition.
try
{
// Retrieve the CodeClass at the insertion point.
TextSelection sel =
(TextSelection)dte.ActiveDocument.Selection;
CodeClass cls =
(CodeClass)sel.ActivePoint.get_CodeElement(
vsCMElement.vsCMElementClass);
// Find the class's overridable methods.
string overrides = "";
foreach (CodeElement elem in cls.Members)
{
if ((elem.Kind == vsCMElement.vsCMElementFunction) &&
((CodeFunction)elem).CanOverride)
overrides += elem.Name + "\r\n";
}
MessageBox.Show(cls.Name +
" has the following overridable methods:" + "\r\n\r\n" +
overrides);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
注解
对于 Visual Basic，该函数是用或声明的
MustOverrideOverrideable。对于 Visual c # 和 Visual C++，函数是用关键字声明的
virtual。对于 JScript，函数不是用
static或关键字声明的final; 也就是说，可以隐式重写这些方法。
备注
在进行了某些类型的编辑之后，代码模型元素（例如类、结构、函数、特性、委托等）的值可能变为非确定性的，这意味着不能确定它们的值始终保持不变。