通过

DesignerVerbCollection.Contains 方法

  • 项目

获取一个值，用以指示集合中是否存在指定的 DesignerVerb。

**命名空间:**System.ComponentModel.Design
**程序集:**System（在 system.dll 中）

语法

声明
Public Function Contains ( _
    value As DesignerVerb _
) As Boolean
用法
Dim instance As DesignerVerbCollection
Dim value As DesignerVerb
Dim returnValue As Boolean

returnValue = instance.Contains(value)

public bool Contains (
    DesignerVerb value
)

public:
bool Contains (
    DesignerVerb^ value
)

public boolean Contains (
    DesignerVerb value
)

public function Contains (
    value : DesignerVerb
) : boolean

参数

返回值

如果集合中存在指定对象，则为 true；否则为 false。

示例

' Tests for the presence of a DesignerVerb in the collection, 
' and retrieves its index if it is found.
Dim testVerb As New DesignerVerb("Example designer verb", New EventHandler(AddressOf Me.ExampleEvent))
Dim itemIndex As Integer = -1
If collection.Contains(testVerb) Then
    itemIndex = collection.IndexOf(testVerb)
End If

// Tests for the presence of a DesignerVerb in the collection, 
// and retrieves its index if it is found.
DesignerVerb testVerb = new DesignerVerb("Example designer verb", new EventHandler(this.ExampleEvent));
int itemIndex = -1;
if( collection.Contains( testVerb ) )
    itemIndex = collection.IndexOf( testVerb );

// Tests for the presence of a DesignerVerb in the collection,
// and retrieves its index if it is found.
DesignerVerb^ testVerb = gcnew DesignerVerb( "Example designer verb", gcnew EventHandler( this, &Class1::ExampleEvent ) );
int itemIndex = -1;
if ( collection->Contains( testVerb ) )
         itemIndex = collection->IndexOf( testVerb );

平台

Windows 98、Windows 2000 SP4、Windows Millennium Edition、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition

.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。

版本信息

.NET Framework

受以下版本支持：2.0、1.1、1.0

请参见

参考

DesignerVerbCollection 类
DesignerVerbCollection 成员
System.ComponentModel.Design 命名空间