Strokes.GetEnumerator 方法

项目
10/28/2008

返回一个对象，该对象实现 IEnumerator 接口并可以循环访问 Strokes 集合中的 Stroke 对象。

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

语法

声明
Public Function GetEnumerator As Strokes..::.StrokesEnumerator
用法
Dim instance As Strokes
Dim returnValue As Strokes..::.StrokesEnumerator

returnValue = instance.GetEnumerator()

public Strokes..::.StrokesEnumerator GetEnumerator()

public:
Strokes..::.StrokesEnumerator^ GetEnumerator()

public Strokes..::.StrokesEnumerator GetEnumerator()

public function GetEnumerator() : Strokes..::.StrokesEnumerator

返回值

类型：Microsoft.Ink.Strokes.StrokesEnumerator
返回一个对象，该对象实现 IEnumerator 接口并可以循环访问 Strokes 集合中的 Stroke 对象。

示例

这些示例演示两种枚举 Strokes 集合以检索集合中包含的每个 Stroke 对象的方法。Strokes 集合由 Ink.Strokes 属性返回。

此示例获取 Strokes 集合的 IEnumerator，然后使用它遍历该集合。

Private Sub EnumerateStrokesWithEnumerator(ByVal mInk As Ink)
    ' access the Strokes property via using statement
    ' to insure that the object mStrokes is disposed when finished
    ' Otherwise, you will have a memory leak
    Using mStrokes As Strokes = mInk.Strokes
        Dim mStrokesEnumerator As IEnumerator = mStrokes.GetEnumerator()
        mStrokesEnumerator.Reset()
        While (mStrokesEnumerator.MoveNext())
            Dim S As Stroke = DirectCast(mStrokesEnumerator.Current, Stroke)
            Me.listBoxStrokeId.Items.Add(S.Id)
        End While
    End Using
End Sub

private void EnumerateStrokesWithEnumerator(Ink mInk)
{
    // access the Strokes property via using statement
    // to insure that the object mStrokes is disposed when finished
    // Otherwise, you will have a memory leak
    using (Strokes mStrokes = mInk.Strokes)
    {
        IEnumerator mStrokesEnumerator = mStrokes.GetEnumerator();
        mStrokesEnumerator.Reset();
        while (mStrokesEnumerator.MoveNext())
        {
            Stroke S = (Stroke)mStrokesEnumerator.Current;
            this.listBoxStrokeId.Items.Add(S.Id);
        }
    }
}

此示例使用 foreach 语句，该语句调用内部代码中的 GetEnumerator 方法，该方法是编译器为支持此语句而生成的。

Private Sub EnumerateStrokesWithForEach(ByVal mInk As Ink)
    ' access the Strokes property via using statement
    ' to insure that the object mStrokes is disposed when finished
    ' Otherwise, you will have a memory leak
    Using mStrokes As Strokes = mInk.Strokes
        For Each S As Stroke In mStrokes
            Me.listBoxStrokeId.Items.Add(S.Id)
        Next
    End Using
End Sub

private void EnumerateStrokesWithForEach(Ink mInk)
{    
    // access the Strokes property via using statement
    // to insure that the object mStrokes is disposed when finished
    // Otherwise, you will have a memory leak
    using (Strokes mStrokes = mInk.Strokes)
    {
        foreach (Stroke S in mStrokes)
        {
            this.listBoxStrokeId.Items.Add(S.Id);
        }
    }
}