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Creating a simple ButtonDropdown Control

, 25 Sep 2013 CPOL
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How to create a simple ButtonDropdown control

Introduction

This post helps to create a ButtonDropDown in Windows Form (I was not able to find a control in Visual Studio for my requirement, so I made one and I’m not sure whether there is one already). For this, I’m using a combination of Button control and ContextMenuStrip control.

SimpleButtonDropdownCtrl/Image01.jpg

The arrow in the button is an image with middle-right aligned.

  1. Initialize a ContextMenuStrip with the required MenuItems
  2. Register the click events of ContextMenuStripMenuItems
  3. Pop out the context menu on Button click with the given x, y axis (w.r.t to the button), y axis value should be the height of the button:
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace ButtonDropDownTest
{
    public partial class Form1 : Form
    {
        private ContextMenuStrip _contextMenuAutoFill;

        public Form1()
        {
            InitializeComponent();
            CreateContextMenuStrip();
        }

        private void CreateContextMenuStrip()
        {
            _contextMenuAutoFill = new ContextMenuStrip();
            _contextMenuAutoFill.Items.Add("Dropdown item 1");
            _contextMenuAutoFill.Items.Add("Dropdown item 2");
            _contextMenuAutoFill.Items.Add("Dropdown item 3");
            _contextMenuAutoFill.Items.Add("Dropdown item 4");

            foreach (ToolStripMenuItem mItem in _contextMenuAutoFill.Items)
                mItem.Click += 
                new System.EventHandler(this.AutoFillToolStripMenuItem_Click);
        }

        private void button1_Click(object sender, EventArgs e)
        {
            button1.ContextMenuStrip = _contextMenuAutoFill;
            button1.ContextMenuStrip.Show
		(button1, new System.Drawing.Point(0, button1.Height));
        }

        private void AutoFillToolStripMenuItem_Click(object sender, EventArgs e)
        {
            string m = ((ToolStripMenuItem)sender).Text;
            MessageBox.Show("You have clicked '" + m + "'");
        }
    }
}

This link explains how to create this control using custom control.

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Balu Sathish
Software Developer Calpine Technologies
India India
No Biography provided

Comments and Discussions

 
GeneralMy vote of 5 Pinmemberfredatcodeproject27-Sep-13 6:34 
GeneralMy vote of 4 PinmemberChampion Chen27-Sep-13 0:12 
GeneralMy vote of 3 Pinmemberridoy22-Jun-13 0:55 
GeneralMy vote of 5 PinmemberDarthillian6-Feb-13 2:37 
GeneralMy vote of 5 Pinmembersolowilliam6-Aug-11 4:09 
GeneralMy vote of 3 PinmemberJason Vogel12-May-11 11:28 
GeneralIdea is good, need to be better PinmemberMickeyWu12-May-11 5:12 
GeneralRe: Idea is good, need to be better PinmemberGregoryW22-Jun-13 1:04 
GeneralMessage Automatically Removed PinmemberHossein Montazeri11-May-11 6:50 
QuestionRe: My vote of 1 PinmemberWarrick Procter11-May-11 21:08 

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