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# KeyDown Method (IKeyboardDevice)

Presses and holds the specified key. This method has multiple overloads.

Note: Supported in LeanFT versions 14.51 and later.

In this topic:

## KeyDown Method (Byte)

Presses and holds the specified key using a keyboard scan code.

Remarks
Supports scan code set 1, such as the list shown at: http://www.computer-engineering.org/ps2keyboard/scancodes1.html

#### C# Syntax

                public void KeyDown(
       byte keyScanCode
    )

Parameters

keyScanCode
  The keyboard scan code of the key to hold.

## KeyDown Method (Keys)

Presses and holds the specified key using a keyboard virtual key.

#### C# Syntax

                            public void KeyDown(
       Keyboard.Keys key
    )

#### Parameters

key
  The keyboard code of the key to hold. Possible values: Keyboard.Keys