ContainerControl.ParentForm Property

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Gets the form that the container control is assigned to.

public:
 property System::Windows::Forms::Form ^ ParentForm { System::Windows::Forms::Form ^ get(); };

[System.ComponentModel.Browsable(false)]
public System.Windows.Forms.Form? ParentForm { get; }

[<System.ComponentModel.Browsable(false)>]
member this.ParentForm : System.Windows.Forms.Form

Public ReadOnly Property ParentForm As Form

Property Value

Form

The Form that the container control is assigned to. This property will return null if the control is hosted inside of Internet Explorer or in another hosting context where there is no parent form.

Attributes

BrowsableAttribute

Examples

The following code example shows how to create two forms: Form1 and Form2. Set the IsMdiContainer property of Form1 to true and make it the MdiParent of Form2. Next, create a button, button1, on each form. When the button on the parent form is clicked, the event handler displays the child form. When the button on the child form is clicked, the event handler displays the Name property of its parent form. Use the following two code segments to overwrite button1 event handlers in both forms.

   // The event handler on Form1.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Create an instance of Form2.
      Form1^ f2 = gcnew Form2;

      // Make this form the parent of f2.
      f2->MdiParent = this;

      // Display the form.
      f2->Show();
   }

// The event handler on Form1.
private void button1_Click(object sender, System.EventArgs e)
{
    // Create an instance of Form2.
    Form2 f2 = new Form2();
    // Make this form the parent of f2.
    f2.MdiParent = this;
    // Display the form.
    f2.Show();
}

' The event handler on Form1.
Private Sub button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
    ' Create an instance of Form2.
    Dim f2 As New Form2()
    ' Make this form the parent of f2.
    f2.MdiParent = Me
    ' Display the form.
    f2.Show()
End Sub

   // The event handler on Form2.
private:
   void button1_Click( Object^ /*sender*/, System::EventArgs^ /*e*/ )
   {
      // Get the Name property of the Parent.
      String^ s = ParentForm->Name;

      // Display the name in a message box.
      MessageBox::Show( String::Concat( "My Parent is ", s, "." ) );
   }

// The event handler on Form2.
private void button1_Click(object sender, System.EventArgs e)
{
    // Get the Name property of the Parent.
    string s = ParentForm.Name;
    // Display the name in a message box.
    MessageBox.Show("My Parent is " + s + ".");
}

' The event handler on Form2.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    ' Get the Name property of the parent.
    Dim s As String = ParentForm.Name
    ' Display the name in a message box.
    MessageBox.Show("My parent is " + s + ".")
End Sub

See also

• Form