如何使用Windows应用程序中值的最后一位数字在文本框中获取自动建议 [英] How do I get autosuggestions in textbox using last digits of a value in windows applications

问题描述

我正在处理Windows应用程序。我有一个自动提示的文本框。我在autosuggestioncollection中添加了一些值。如果我键入值的第一个字母，则表示添加的值，但如果我键入值的最后几个字母。即使我输入值的最后几个字母，我也需要它来显示建议。



我尝试了什么：

I am working on windows applications. I have a text box with autosuggestion on. i have added few values in autosuggestioncollection. if i type first letter of the value,it is suggesting the added values but if i type last few letters of the value. I need it to show the suggestions even if i enter the last few letters of the value.

What I have tried:

AutoCompleteStringCollection mycollection = new    AutoCompleteStringCollection();
mycollection.Add("TEST12345");
mycollection.Add("TEST13456");
mycollection.Add("TEST22222");
mycollection.Add("TEST99999");
textBox1.AutoCompleteCustomSource = mycollection;

推荐答案

嗯......这是AutoCompleteCustomSource [ ^ ]，因为它通过将输入的前缀与维护源中的所有字符串的前缀进行比较 ，自动完成输入字符串。



如果你想要更改它，你必须创建 textBox1_Click 事件，然后你可以实现一个方法，将输入的字符串与自定义源字符串进行比较。例如：

Well... This is normal behaviour of control with AutoCompleteCustomSource[^], because it automatically completes input strings by comparing the prefix being entered to the prefixes of all strings in a maintained source.

If you would like to change it, you have to create textBox1_Click event and there you can implement a method which compare entered string with a string of custom source. For example:

TextBox txt = (TextBox)sender;
if(txt.Text.Length<2) return;
string s = txt.Text;
s = txt.AutoCompleteCustomSource.OfType<string>.FirstOrDefault(x=> x.Contains(s));
if(s != string.Empty) txt.Text = s;

当 TextBox 的属性设置如下所示时，它按预期工作：

It works as expected, when below properties of TextBox are set as shown:

AutoCompleteMode = SuggestAppend;
AutoCompleteSource = CustomSource;

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