ToolStripDropDown.DefaultDropDownDirection Properti

Definisi

Ruang nama:

System.Windows.Forms

Rakitan:

System.Windows.Forms.dll

Sumber:

ToolStripDropDown.cs

Mendapatkan atau mengatur arah di mana ToolStripDropDown ditampilkan relatif terhadap ToolStrip.

public:
 virtual property System::Windows::Forms::ToolStripDropDownDirection DefaultDropDownDirection { System::Windows::Forms::ToolStripDropDownDirection get(); void set(System::Windows::Forms::ToolStripDropDownDirection value); };

public override System.Windows.Forms.ToolStripDropDownDirection DefaultDropDownDirection { get; set; }

member this.DefaultDropDownDirection : System.Windows.Forms.ToolStripDropDownDirection with get, set

Public Overrides Property DefaultDropDownDirection As ToolStripDropDownDirection

Nilai Properti

ToolStripDropDownDirection

Salah ToolStripDropDownDirection satu nilai.

Contoh

Contoh kode berikut menunjukkan cara menetapkan DefaultDropDownDirection properti yang ditentukan oleh pengaturan tombol radio.

// The following methods handle the CheckChanged event 
// for all the radio buttons. Each method calls a utility
// method to set the ToolStripDropDownDirection appropriately.

private void radioButton1_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.AboveLeft);
}

private void radioButton2_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.AboveRight);
}

private void radioButton3_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.BelowLeft);
}

private void radioButton4_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.BelowRight);
}

private void radioButton5_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.Default);
}

private void radioButton6_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.Left);
}

private void radioButton7_CheckedChanged(object sender, EventArgs e)
{
    this.HandleRadioButton(sender, ToolStripDropDownDirection.Right);
}

// This utility method sets the DefaultDropDownDirection property.
private void HandleRadioButton(object sender, ToolStripDropDownDirection direction)
{
    RadioButton rb = sender as RadioButton;

    if (rb != null)
    {
        if (rb.Checked)
        {
            this.dropDownDirection = direction;
            this.contextMenuStrip1.DefaultDropDownDirection = direction;
        }
    }
}

' The following methods handle the CheckChanged event 
' for all the radio buttons. Each method calls a utility
' method to set the ToolStripDropDownDirection appropriately.
Private Sub radioButton1_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton1.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.AboveLeft)
 End Sub


Private Sub radioButton2_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton2.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.AboveRight)
 End Sub


Private Sub radioButton3_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton3.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.BelowLeft)
 End Sub


Private Sub radioButton4_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton4.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.BelowRight)
 End Sub


Private Sub radioButton5_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton5.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.Default)
 End Sub


Private Sub radioButton6_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton6.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.Left)
 End Sub


Private Sub radioButton7_CheckedChanged(sender As Object, e As EventArgs) Handles radioButton7.CheckedChanged
   Me.HandleRadioButton(sender, ToolStripDropDownDirection.Right)
 End Sub


 ' This utility method sets the DefaultDropDownDirection property.
Private Sub HandleRadioButton(sender As Object, direction As ToolStripDropDownDirection)
     Dim rb As RadioButton = CType(sender, RadioButton)
   
     If rb IsNot Nothing Then
         If rb.Checked Then
             Me.dropDownDirection = direction
             Me.contextMenuStrip1.DefaultDropDownDirection = direction
         End If
     End If
 End Sub