Enter the smart match comboBox

rivate void comboBox1_TextUpdate(object sender, EventArgs e)//TextUpdate事件
{
string[] data = new string[] { "张三", "李四", "王五", "赵六", "田七","张三丰","铁拐李","王大麻子" };
comboBox1.Items.AddRange(data);
comboBox1.TextUpdate += (a, b) =>
{
var input = comboBox1.Text.ToUpper();
comboBox1.Items.Clear();
if (string.IsNullOrWhiteSpace(input)) comboBox1.Items.AddRange(data);
else
{
var newList = data.Where(x => x.IndexOf(input, StringComparison.CurrentCultureIgnoreCase) != -1).ToArray();
comboBox1.Items.AddRange(newList);
}
comboBox1.Select(comboBox1.Text.Length, 0);
comboBox1.DroppedDown = true;Cursor = Cursors.Default;
// holding the mouse pointer shape

};
}