个性化下拉列表

[c#]代码库

using System;
using System.Drawing;
using System.Windows.Forms;
using TR0217.ControlEx;

namespace SplitButton
{
    public partial class Form1 : Form
    {
        ContextContainer _contextContainer = null;
        ContextContainer _contextContainer1 = null;
        public Form1()
        {
            InitializeComponent();
            _contextContainer = new ContextContainer(new UserControl1());
            _contextContainer.ContextMode = ContextMode.MultiSelect;

            _contextContainer1 = new ContextContainer(new UserControl2());
            _contextContainer1.ContextMode = ContextMode.MultiSelect;
        }

        private void splitButton1_Click(object sender, EventArgs e)
        {
            contextMenuStrip1.Show(splitButton1, new Point(0, splitButton1.Height));
        }

        private void splitButton4_SplitMouseClick(object sender, MouseEventArgs e)
        {
            contextMenuStrip2.Show(splitButton4, new Point(0, splitButton4.Height));
        }

        private void redToolStripMenuItem_Click(object sender, EventArgs e)
        {
            splitButton1.BackColor = Color.Red;
        }

        private void greenToolStripMenuItem_Click(object sender, EventArgs e)
        {
            splitButton1.BackColor = Color.Green;
        }

        private void blueToolStripMenuItem_Click(object sender, EventArgs e)
        {
            splitButton1.BackColor = Color.Blue;
        }

        private void splitButton5_SplitMouseClick(object sender, MouseEventArgs e)
        {
            _contextContainer.Show(splitButton5);
        }

        private void splitButton7_SplitMouseClick(object sender, MouseEventArgs e)
        {
            _contextContainer1.Show(splitButton7);
        }
    }
}

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