Auto-File and URL Completion for Text Boxes and Combo Boxeshttp://www.vbaccelerator.com/home/NET/Code/Libraries/Shell_Projects/Auto-File_Completion_for_Text_Boxes_and_Combo_Boxes/article.asp或者我写的一个:
如何实现增量查找?
http://expert.csdn.net/Expert/topic/1994/1994148.xml?temp=.8741876

解决方案 »

  1.   

    ComboBox with AutoCompletehttp://www.csharphelp.com/archives2/files/archive287/ACComboBox.zipAutoComplete ComboBox in VB.Net - VB.NET
    http://www.codeproject.com/vb/net/autocomplete_combobox.asp
      

  2.   

    comboBox1.Items.Add("heleo1");
    comboBox1.Items.Add("heleo2");
    comboBox1.Items.Add("heleo3");
    comboBox1.Items.Add("heleo4");
    comboBox1.Items.Add("heleo5");
    comboBox1.SelectedIndex = comboBox1.FindString("heleo3");