winform让Textbox像百度一下实现下拉显示
public partial class Form1 : Form{List<string> Data = new List<string>();string Randomstr = "功夫撒黑胡椒hcbvf蜂窝qwertyuiopasdfghjklzxcvbnm法国的恢复到飞范德萨QWERTYUIOPASDFGHJKLZXCVBNM出现过热423贴①46546也有一头热刚恢复到贴3天赋如头3广泛的我让他";Random rd = new Random(GetRandomSeed());static int GetRandomSeed(){byte[] bytes = new byte[4];System.Security.Cryptography.RNGCryptoServiceProvider rng = new System.Security.Cryptography.RNGCryptoServiceProvider();rng.GetBytes(bytes);return BitConverter.ToInt32(bytes, 0);}public Form1(){InitializeComponent();for (int i = 0; i < 20000000; i++){Data.Add(Randomstr.ToCharArray()[rd.Next(Randomstr.Length)].ToString()+ Randomstr.ToCharArray()[rd.Next(Randomstr.Length)].ToString()+ Randomstr.ToCharArray()[rd.Next(Randomstr.Length)].ToString()+ Randomstr.ToCharArray()[rd.Next(Randomstr.Length)].ToString()+ Randomstr.ToCharArray()[rd.Next(Randomstr.Length)].ToString());}this.textBox1.AutoCompleteCustomSource.Clear();this.textBox1.AutoCompleteCustomSource.AddRange(Data.ToArray());this.textBox1.AutoCompleteMode = System.Windows.Forms.AutoCompleteMode.SuggestAppend;this.textBox1.AutoCompleteSource = System.Windows.Forms.AutoCompleteSource.CustomSource;}}
下面是2000W数据加载后的效果
效果还可以。就分享了