DataGridView 单元格自动填充

在DataGridView单元格中，当输入指定字符时，自动完成填充。

通过 TextBox实现

AutoCompleteMode

AutoCompleteMode.Suggest；

AutoCompleteSource

AutoCompleteSource.customSource；

namespace DataGridView单元格自动填充
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            string constr = "server=192.168.100.222;user=sa;pwd=p@ssw1rd;database=pwd1";
            SqlConnection mycon = new SqlConnection(constr);
            
            try
            {
                mycon.Open();
                DataTable mytb = new DataTable();
                SqlDataAdapter mydpt = new SqlDataAdapter("select * from book",mycon);
                mydpt.Fill(mytb);
                dataGridView1.DataSource = mytb;
                mycon.Close();
            }
            catch (Exception ex)
            {

                MessageBox.Show(ex.Message);
            }

        }
        //添加编辑控件显示事件
        private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
        {
            //定义字符串来确定你要自动填充那列
            string titletext=dataGridView1.Columns[dataGridView1.CurrentCell.ColumnIndex].HeaderText;

            //判断title和“shuoming”是否相等也可以用等号==
            if (titletext.Equals("shuoming"))
            {
                //控件textbox = 编辑控件显示事件 别名为textbox
                TextBox autotext = e.Control as TextBox;
                if (autotext!=null)
                {
                    autotext.AutoCompleteMode = AutoCompleteMode.Suggest;
                    autotext.AutoCompleteSource = AutoCompleteSource.CustomSource;
                    AutoCompleteStringCollection datacoll = new AutoCompleteStringCollection();
                    datacoll.Add("监控专用");
                    datacoll.Add("共享专用");
                    autotext.AutoCompleteCustomSource= datacoll;
                    
                }

            }