CodeExpressionCollection.Contains(CodeExpression) 方法

定义

获取一个值,该值指示集合是否包含指定的 CodeExpression 对象。

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

参数

value
CodeExpression

CodeExpression 定位在集合中的对象。

返回

true 如果集合包含指定的对象,则为 ;否则,为 false.

示例

下面的示例使用 Contains 该方法搜索特定 CodeExpression 对象的存在,并获取找到它的索引值。

// Tests for the presence of a CodeExpression in the
// collection, and retrieves its index if it is found.
CodeExpression testComment = 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

适用于

另请参阅