EditorPartCollection.Contains(EditorPart) 方法
定义
重要
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返回一个值，该值指示集合中是否存在特定控件。
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 -> boolPublic Function Contains (editorPart As EditorPart) As Boolean参数
- editorPart
- EditorPart
要测试其是否为集合成员的 EditorPart。
返回
一个布尔值，指示集合中是否存在 EditorPart。
示例
下面的代码示例演示如何确定特定 EditorPart 控件是否位于 对象中 EditorPartCollection 。 有关运行示例所需的完整代码，请参阅类概述的 EditorPartCollection “示例”部分。
事件中的代码在 Button1_Click 添加其他控件时不会将 LayoutEditorPart1 控件添加到 EditorPartCollection 对象。 若要确认 LayoutEditorPart1 控件不在集合中，代码使用 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>
在浏览器中加载页面时，可以通过在“显示模式”下拉列表控件中选择“编辑”，将页面切换到编辑模式。 可以单击 (控件标题栏中 TextDisplayWebPart 的向下箭头) 谓词菜单，然后单击“ 编辑 ”编辑控件。 当编辑用户界面 (UI) 可见时，可以看到所有 EditorPart 控件。 如果单击“ 创建编辑器”“PartCollection ”按钮，你会注意到控件的背景色 LayoutEditorPart1 与其他控件不同，因为它不是对象的一部分 EditorPartCollection 。
注解
方法Contains确定对象中EditorPartCollection是否已存在特定EditorPart控件。
