Form.MdiChildren 属性
重要
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获取窗体的数组，这些窗体表示以此窗体作为父级的多文档界面 (MDI) 子窗体。
public:
property cli::array <System::Windows::Forms::Form ^> ^ MdiChildren { cli::array <System::Windows::Forms::Form ^> ^ get(); };C#
[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.Form[] MdiChildren { get; }[<System.ComponentModel.Browsable(false)>]
member this.MdiChildren : System.Windows.Forms.Form[]Public ReadOnly Property MdiChildren As Form()
Form[]
Form 对象的数组，每个对象都标识此窗体的一个 MDI 子窗体。
- 属性
以下示例演示如何使用 MdiChildren 属性循环访问 MDI 子窗体的列表，并将控件 Button 添加到每个子窗体。
private:
void AddButtonsToMyChildren()
{
// If there are child forms in the parent form, add Button controls to them.
for ( int x = 0; x < this->MdiChildren->Length; x++ )
{
// Create a temporary Button control to add to the child form.
Button^ tempButton = gcnew Button;
// Set the location and text of the Button control.
tempButton->Location = Point(10,10);
tempButton->Text = "OK";
// Create a temporary instance of a child form (Form 2 in this case).
Form^ tempChild = dynamic_cast<Form^>(this->MdiChildren[ x ]);
// Add the Button control to the control collection of the form.
tempChild->Controls->Add( tempButton );
}
}
C#
private void AddButtonsToMyChildren()
{
// If there are child forms in the parent form, add Button controls to them.
for (int x =0; x < this.MdiChildren.Length;x++)
{
// Create a temporary Button control to add to the child form.
Button tempButton = new Button();
// Set the location and text of the Button control.
tempButton.Location = new Point(10,10);
tempButton.Text = "OK";
// Create a temporary instance of a child form (Form 2 in this case).
Form tempChild = (Form)this.MdiChildren[x];
// Add the Button control to the control collection of the form.
tempChild.Controls.Add(tempButton);
}
}
Private Sub AddButtonsToMyChildren()
' If there are child forms in the parent form, add Button controls to them.
Dim x As Integer
For x = 0 To (Me.MdiChildren.Length) - 1
' Create a temporary Button control to add to the child form.
Dim tempButton As New Button()
' Set the location and text of the Button control.
tempButton.Location = New Point(10, 10)
tempButton.Text = "OK"
' Create a temporary instance of a child form (Form 2 in this case).
Dim tempChild As Form = CType(Me.MdiChildren(x), Form)
' Add the Button control to the control collection of the form.
tempChild.Controls.Add(tempButton)
Next x
End Sub
此属性允许您获取对当前在 MDI 父窗体中打开的所有 MDI 子窗体的引用。 若要创建 MDI 子窗体，请将作为 MDI 父窗体的 分配给FormMdiParent子窗体的 属性。
可以使用此属性循环访问所有 MDI 子窗体，以执行诸如在 MDI 父窗体关闭时将数据保存到数据库等操作，或者根据在应用程序中执行的操作更新子窗体上的字段。
| 产品 | 版本 |
|---|---|
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
