EditorPartCollection.Contains(EditorPart) 方法

  • 參考

定義

命名空間:
System.Web.UI.WebControls.WebParts
組件:
System.Web.dll

傳回值，指出集合中是否存在特定的控制項。

public:
 bool Contains(System::Web::UI::WebControls::WebParts::EditorPart ^ editorPart);
public bool Contains (System.Web.UI.WebControls.WebParts.EditorPart editorPart);
member this.Contains : System.Web.UI.WebControls.WebParts.EditorPart -> bool
Public Function Contains (editorPart As EditorPart) As Boolean

參數

editorPart
EditorPart

正對其集合成員狀態進行測試的 EditorPart。

傳回

Boolean

指出集合中是否存在 EditorPart 的布林值。

範例

下列程式碼範例示範如何判斷特定 EditorPart 控制項是否在 物件中 EditorPartCollection 。 如需執行範例所需的完整程式碼，請參閱類別概觀的 EditorPartCollection 範例一節。

事件中的 Button1_Click 程式碼不會在加入其他控制項時， LayoutEditorPart1 將控制項新增至 EditorPartCollection 物件。 若要確認 LayoutEditorPart1 控制項不在集合中，程式碼會使用 Contains 方法。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  protected void Button1_Click(object sender, EventArgs e)
  {
    ArrayList list = new ArrayList(2);
    list.Add(AppearanceEditorPart1);
    list.Add(PropertyGridEditorPart1);
    // Pass an ICollection object to the constructor.
    EditorPartCollection myParts = new EditorPartCollection(list);
    foreach (EditorPart editor in myParts)
    {
      editor.BackColor = System.Drawing.Color.LightBlue;
      editor.Description = "My " + editor.DisplayTitle + " editor.";
    }

    // Use the IndexOf property to locate an EditorPart control.
    int propertyGridPart = myParts.IndexOf(PropertyGridEditorPart1);
    myParts[propertyGridPart].ChromeType = PartChromeType.TitleOnly;

    // Use the Contains method to see if an EditorPart exists.
    if(!myParts.Contains(LayoutEditorPart1))
      LayoutEditorPart1.BackColor = System.Drawing.Color.LightYellow;
    
    // Use the CopyTo method to create an array of EditorParts.
    EditorPart[] partArray = new EditorPart[3];
    partArray[0] = LayoutEditorPart1;
    myParts.CopyTo(partArray,1);
    Label1.Text = "<h3>EditorParts in Custom Array</h3>";
    foreach (EditorPart ePart in partArray)
    {
      Label1.Text += ePart.Title + "<br />";
    }

  }

</script>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">

  Protected Sub Button1_Click(ByVal sender As Object, _
    ByVal e As EventArgs)
    
    Dim list As New ArrayList(2)
    list.Add(AppearanceEditorPart1)
    list.Add(PropertyGridEditorPart1)
    ' Pass an ICollection object to the constructor.
    Dim myParts As New EditorPartCollection(list)
    Dim editor As EditorPart
    For Each editor In myParts
      editor.BackColor = System.Drawing.Color.LightBlue
      editor.Description = "My " + editor.DisplayTitle + " editor."
    Next editor
    
    ' Use the IndexOf property to locate an EditorPart control.
    Dim propertyGridPart As Integer = _
      myParts.IndexOf(PropertyGridEditorPart1)
    myParts(propertyGridPart).ChromeType = PartChromeType.TitleOnly
    
    ' Use the Contains method to see if an EditorPart exists.
    If Not myParts.Contains(LayoutEditorPart1) Then
      LayoutEditorPart1.BackColor = System.Drawing.Color.LightYellow
    End If
    
    ' Use the CopyTo method to create an array of EditorParts.
    Dim partArray(2) As EditorPart
    partArray(0) = LayoutEditorPart1
    myParts.CopyTo(partArray, 1)
    Label1.Text = "<h3>EditorParts in Custom Array</h3>"
    Dim ePart As EditorPart
    For Each ePart In partArray
      Label1.Text += ePart.Title + "<br />"
    Next ePart

  End Sub

</script>

當您在瀏覽器中載入頁面時，您可以在 [顯示模式] 下拉式清單控制項中選取 [編輯]，將頁面切換為編輯模式。 您可以按一下動詞功能表 (控制項標題列中 TextDisplayWebPart 的向下箭號) ，然後按一下 [ 編輯 ] 以編輯控制項。 當編輯使用者介面 (UI) 可見時，您可以看到所有 EditorPart 控制項。 如果您按一下 [ 建立編輯器PartCollection ] 按鈕，您會發現控制項的背景色彩 LayoutEditorPart1 與其他控制項不同，因為它不是 物件的一部分 EditorPartCollection 。

備註

方法 Contains 會判斷特定 EditorPart 控制項是否已經在 物件中 EditorPartCollection 。

適用於

另請參閱