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ToolStripDropDownButton Constructor

Initializes a new instance of the ToolStripDropDownButton class.

Namespace:  System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

public ToolStripDropDownButton()

The following code example creates and initializes a ToolStripDropDownButton control.

		// Declare the drop-down button and the items it will contain.
		internal ToolStripDropDownButton dropDownButton1;
		internal ToolStripDropDown dropDown;
		internal ToolStripButton buttonRed;
		internal ToolStripButton buttonBlue;
		internal ToolStripButton buttonYellow;

		private void InitializeDropDownButton()
			dropDownButton1 = new ToolStripDropDownButton();
			dropDown = new ToolStripDropDown();
			dropDownButton1.Text = "A";

			// Set the drop-down on the ToolStripDropDownButton.
			dropDownButton1.DropDown = dropDown;

            // Set the drop-down direction.
            dropDownButton1.DropDownDirection = ToolStripDropDownDirection.Left;

            // Do not show a drop-down arrow.
            dropDownButton1.ShowDropDownArrow = false;

			// Declare three buttons, set their foreground color and text, 
			// and add the buttons to the drop-down.
			buttonRed = new ToolStripButton();
			buttonRed.ForeColor = Color.Red;
			buttonRed.Text = "A";

			buttonBlue = new ToolStripButton();
			buttonBlue.ForeColor = Color.Blue;
			buttonBlue.Text = "A";

			buttonYellow = new ToolStripButton();
			buttonYellow.ForeColor = Color.Yellow;
			buttonYellow.Text = "A";
			buttonBlue.Click += new EventHandler(colorButtonsClick);
			buttonRed.Click += new EventHandler(colorButtonsClick);
			buttonYellow.Click += new EventHandler(colorButtonsClick);

			dropDown.Items.AddRange(new ToolStripItem[] 
				{ buttonRed, buttonBlue, buttonYellow });

		// Handle the buttons' click event by setting the foreground color of the
		// form to the foreground color of the button that is clicked.
		private void colorButtonsClick(object sender, EventArgs e)
			ToolStripButton senderButton = (ToolStripButton)sender;
			this.ForeColor = senderButton.ForeColor;

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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