Form.MdiChildren 屬性
重要
部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。
取得表單陣列，表示身為這個表單父代的多重文件介面 (MDI) 子表單。
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 物件的陣列，每個物件會各自識別這個表單的其中一個 MDI 子表單。
- 屬性
下列範例示範如何使用 MdiChildren 屬性逐一 Button 查看 MDI 子表單清單，並將控制項新增至每個表單。
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
此屬性可讓您取得目前在 MDI 父表單中開啟之所有 MDI 子表單的參考。 若要建立 MDI 子表單，請將 MDI 父表單指派 Form 給 MdiParent 子表單的 屬性。
您可以使用此屬性來迴圈查看所有 MDI 子表單，以執行作業，例如在 MDI 父表單關閉時將資料儲存至資料庫，或根據應用程式中執行的動作更新子表單上的欄位。
| 產品 | 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 |
