KeyEventArgs.Modifiers Property

Definition

Namespace:

System.Windows.Forms

Assembly:

System.Windows.Forms.dll

Source:

KeyEventArgs.cs

Gets the modifier flags for a KeyDown or KeyUp event. The flags indicate which combination of CTRL, SHIFT, and ALT keys was pressed.

C#

public System.Windows.Forms.Keys Modifiers { get; }

Property Value

Keys

A Keys value representing one or more modifier flags.

Examples

The following code example shows how to use the Modifiers property to determine which modifier keys were pressed along with the primary key.

C#

private void textBox1_KeyDown(object sender, System.Windows.Forms.KeyEventArgs e)
{
    // Determine whether the key entered is the F1 key. If it is, display Help.
    if(e.KeyCode == Keys.F1 && (e.Alt || e.Control || e.Shift))
    {
        // Display a pop-up Help topic to assist the user.
        Help.ShowPopup(textBox1, "Enter your name.", new Point(textBox1.Bottom, textBox1.Right));
    }
    else if(e.KeyCode == Keys.F2 && e.Modifiers == Keys.Alt)
    {
        // Display a pop-up Help topic to provide additional assistance to the user.
        Help.ShowPopup(textBox1, "Enter your first name followed by your last name. Middle name is optional.",
            new Point(textBox1.Top, this.textBox1.Left));
    }
}

Remarks

To determine whether a specific modifier key was pressed, use the Control, Shift, and Alt properties. Modifier flags can be combined with bitwise OR.

Applies to

See also

• Alt
• Control
• Shift
• ModifierKeys