c#中TextBox输入提示功能

 设置TextBox的AutoCompleteSource的属性为CustomSource，设置TextBox的AutoCompleteMode属性为SuggestAppend。

1. using System;
2. using System.Collections.Generic;
3. using System.ComponentModel;
4. using System.Data;
5. using System.Drawing;
6. using System.Text;
7. using System.Windows.Forms;
8. using WindowsApplication7.DataSet1TableAdapters;
10. namespace WindowsApplication7
11. {
12.     public partial class Form1 : Form
13.     {
14.         DataSet1 ds = new DataSet1();
15.         CustomersTableAdapter adpter = new CustomersTableAdapter();
16.         public Form1()
17.         {
18.             InitializeComponent();
19.           
20.         }
22.         private void BuildAutoCompleteList()
23.         {
24.             AutoCompleteStringCollection filterVals = new AutoCompleteStringCollection();
25.             foreach (DataRow dr in ds.Customers)
26.             {
27.                 filterVals.Add(dr["CompanyName"].ToString());
28.             }
29.             txtCompanyName.AutoCompleteCustomSource = filterVals;
30.         }
32.         private void Form1_Load(object sender, EventArgs e)
33.         {
34.             adpter.Fill(ds.Customers);
35.             BuildAutoCompleteList();
36.          }
38.     }
39. }