如何让文本形成一个文本文件到自动完成c＃/ .net Windows窗体

Question

我已经创建了一个登录表单，我将用户名或密码保存到使用using System.IO FileStream的文本文件中。我想为用户名文本框或密码文本框使用自动完成。

我想在AutoComplete中获取用户名或密码，我保存在文本文件中，这样我就不必将用户名ot密码放在文本框中。

它应该显示在文本框的用户名和密码，选择这样的（点击查看）http://i49.tinypic.com/rkuats.jpg和http://i46.tinypic.com/21edys1.jpg

Answer 1

你在开发？如果它是一个Web应用程序，你可以使用jQuery UI来实现自动完成的文本框：

$(function() { 
    var availableTags = [ 
     "ActionScript", 
     "AppleScript", 
     "Asp", 
     "BASIC", 
     "C", 
     "C++", 
     "Clojure", 
     "COBOL", 
     "ColdFusion", 
     "Erlang", 
     "Fortran", 
     "Groovy", 
     "Haskell", 
     "Java", 
     "JavaScript", 
     "Lisp", 
     "Perl", 
     "PHP", 
     "Python", 
     "Ruby", 
     "Scala", 
     "Scheme" 
    ]; 
    $("#tags").autocomplete({ 
     source: availableTags 
    }); 
}); 

如果您正在使用WPF，你可以做同样在C＃：

public Window1() 
{ 
    InitializeComponent(); 
    List<string> source = new List<string>{/*your source of strings*/}; 
    TextBoxName.ItemSource = source; 
} 

另一种方法：

private void Form1_Load(object sender, EventArgs e) 
{ 
// Create the list to use as the custom source. 
var source = new AutoCompleteStringCollection(); 
source.AddRange(new string[] 
       { 
        "January", 
        "February", 
        "March", 
        "April", 
        "May", 
        "June", 
        "July", 
        "August", 
        "September", 
        "October", 
        "November", 
        "December" 
       }); 

// Create and initialize the text box. 
var textBox = new TextBox 
       { 
        AutoCompleteCustomSource = source, 
        AutoCompleteMode = 
         AutoCompleteMode.SuggestAppend, 
        AutoCompleteSource = 
         AutoCompleteSource.CustomSource, 
        Location = new Point(20, 20), 
        Width = ClientRectangle.Width - 40, 
        Visible = true 
       }; 

// Add the text box to the form. 
Controls.Add(textBox); 
}