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CodeExpressionCollection.Contains(CodeExpression) 方法

定義

取得值,這個值表示集合是否包含指定的 CodeExpression 物件。

public:
 bool Contains(System::CodeDom::CodeExpression ^ value);
public bool Contains (System.CodeDom.CodeExpression value);
member this.Contains : System.CodeDom.CodeExpression -> bool
Public Function Contains (value As CodeExpression) As Boolean

參數

value
CodeExpression

要放置在集合中的 CodeExpression 物件。

傳回

如果集合包含指定的物件,則為 true,否則為 false

範例

下列範例會 Contains 使用 方法來搜尋特定 CodeExpression 物件是否存在,並取得找到它的索引值。

// Tests for the presence of a CodeExpression in the 
// collection, and retrieves its index if it is found.
CodeExpression^ testComment = gcnew CodePrimitiveExpression( true );
int itemIndex = -1;
if ( collection->Contains( testComment ) )
   itemIndex = collection->IndexOf( testComment );
// Tests for the presence of a CodeExpression in the
// collection, and retrieves its index if it is found.
CodeExpression testComment = new CodePrimitiveExpression(true);
int itemIndex = -1;
if( collection.Contains( testComment ) )
    itemIndex = collection.IndexOf( testComment );
' Tests for the presence of a CodeExpression in the 
' collection, and retrieves its index if it is found.
Dim testComment = New CodePrimitiveExpression(True)
Dim itemIndex As Integer = -1
If collection.Contains(testComment) Then
    itemIndex = collection.IndexOf(testComment)
End If

適用於

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