WuuTool（二）字符编码转换

博主：灯火微末
发布时间：2022 年 04 月 24 日
862次浏览
暂无评论
6986字数
分类： WuuTool

# 一.事件监听

对TextBox的KeyUp事件进行监听处理。

```c#

<i:Interaction.Triggers >
     <i:EventTrigger EventName="KeyUp" >
          <prism:InvokeCommandAction Command="{Binding TextChanged}"  CommandParameter="5" />
     </i:EventTrigger>
</i:Interaction.Triggers>
```

最初使用的 `TextChanged`Event，结果发现赋值会导致反复触发该事件，因此改用了`KeyUp`Event。

# 二.编码转换

## 1.GB2312编码支持

使用nuget安装`system.text.encoding.codepages`，在使用GB2312编码之前，增加如下代码：

```c#
Encoding.RegisterProvider(CodePagesEncodingProvider.Instance);
```

编码转换代码如下：

```c#
private string _Text;
private string _ANSI;
private string _GBK;
private string _Unicode;
private string _Utf_8;
private string _Utf_7;
//文本
public string Text
{
    get { return _Text; }
    set { SetProperty(ref _Text, value); }
}
//ASCII 编码
public string ANSI
{
    get { return _ANSI; }
    set { SetProperty(ref _ANSI, value); }
}
//GB2312 编码
public string GBK
{
    get { return _GBK; }
    set { SetProperty(ref _GBK, value); }
}
//Unicode 编码
public string Unicode
{
    get { return _Unicode; }
    set { SetProperty(ref _Unicode, value); }
}
//Utf-8 编码
public string Utf_8
{
    get { return _Utf_8; }
    set { SetProperty(ref _Utf_8, value); }
}
//Utf-7 编码
public string Utf_7
{
    get { return _Utf_7; }
    set { SetProperty(ref _Utf_7, value); }
}

private DelegateCommand<string> _textChanged;
public DelegateCommand<string> TextChanged =>
    _textChanged ?? (_textChanged = new DelegateCommand<string>(_TextChanged));
void _TextChanged(string str)
{
    try
    {
        switch (str)
        {
            case "0":    //输入文本
                if (Text?.Length > 0)
                {
                  
                    ANSI = BitConverter.ToString(Encoding.ASCII.GetBytes(Text)).Replace("-", " ");
                    GBK = BitConverter.ToString(Encoding.GetEncoding("GB2312").GetBytes(Text)).Replace("-", " ");
                    Unicode = BitConverter.ToString(Encoding.Unicode.GetBytes(Text)).Replace("-", " ");
                    Utf_8 = BitConverter.ToString(Encoding.UTF8.GetBytes(Text)).Replace("-", " ");
                    Utf_7 = BitConverter.ToString(Encoding.UTF7.GetBytes(Text)).Replace("-", " ");
                }
                else
                {
                    ANSI = "";
                    GBK = "";
                    Unicode = "";
                    Utf_8 = "";
                    Utf_7 = "";
                }
                break;                  
            case "1":   // 输入ASCII编码
                if(ANSI?.Length>0)
                {
                  
                    Text = Encoding.ASCII.GetString(ToBytesFromHexString(ANSI.Replace(" ","")));
                    GBK = BitConverter.ToString(Encoding.GetEncoding("GB2312").GetBytes(Text)).Replace("-", " ");
                    Unicode = BitConverter.ToString(Encoding.Unicode.GetBytes(Text)).Replace("-", " ");
                    Utf_8 = BitConverter.ToString(Encoding.UTF8.GetBytes(Text)).Replace("-", " ");
                    Utf_7 = BitConverter.ToString(Encoding.UTF7.GetBytes(Text)).Replace("-", " ");
                }
                else
                {
                    Text = "";
                    GBK = "";
                    Unicode = "";
                    Utf_8 = "";
                    Utf_7 = "";
                }                  
                break;
            case "2":    // 输入GB2312编码
                if (GBK?.Length > 0)
                {
                    Text = Encoding.GetEncoding("GB2312").GetString(ToBytesFromHexString(GBK.Replace(" ", "")));
                    ANSI = BitConverter.ToString(Encoding.ASCII.GetBytes(Text)).Replace("-", " ");
                    Unicode = BitConverter.ToString(Encoding.Unicode.GetBytes(Text)).Replace("-", " ");
                    Utf_8 = BitConverter.ToString(Encoding.UTF8.GetBytes(Text)).Replace("-", " ");
                    Utf_7 = BitConverter.ToString(Encoding.UTF7.GetBytes(Text)).Replace("-", " ");
                }
                else
                {
                    Text = "";
                    ANSI = "";
                    Unicode = "";
                    Utf_8 = "";
                    Utf_7 = "";
                }                                                      
                break;
            case "3":    // 输入Unicode编码
                if (Unicode?.Length > 0)
                {
                    Text = Encoding.Unicode.GetString(ToBytesFromHexString(Unicode.Replace(" ", "")));
                    ANSI = BitConverter.ToString(Encoding.ASCII.GetBytes(Text)).Replace("-", " ");
                    GBK = BitConverter.ToString(Encoding.GetEncoding("GB2312").GetBytes(Text)).Replace("-", " ");
                    Utf_8 = BitConverter.ToString(Encoding.UTF8.GetBytes(Text)).Replace("-", " ");
                    Utf_7 = BitConverter.ToString(Encoding.UTF7.GetBytes(Text)).Replace("-", " ");
                }
                else
                {
                    Text = "";
                    ANSI = "";
                    GBK = "";
                    Utf_8 = "";
                    Utf_7 = "";
                }
                break;
            case "4":    // 输入Utf-8编码
                if (Utf_8?.Length > 0)
                {
                    Text = Encoding.UTF8.GetString(ToBytesFromHexString(Utf_8.Replace(" ", "")));
                    ANSI = BitConverter.ToString(Encoding.ASCII.GetBytes(Text)).Replace("-", " ");
                    GBK = BitConverter.ToString(Encoding.GetEncoding("GB2312").GetBytes(Text)).Replace("-", " ");
                    Unicode = BitConverter.ToString(Encoding.Unicode.GetBytes(Text)).Replace("-", " ");
                    Utf_7 = BitConverter.ToString(Encoding.UTF7.GetBytes(Text)).Replace("-", " ");
                }
                else
                {
                    Text = "";
                    ANSI = "";
                    GBK = "";
                    Unicode = "";
                    Utf_7 = "";
                }
                break;
            case "5":    // 输入Utf-7编码
                if (Utf_7?.Length > 0)
                {
                    Text = Encoding.UTF7.GetString(ToBytesFromHexString(Utf_8.Replace(" ", "")));
                    ANSI = BitConverter.ToString(Encoding.ASCII.GetBytes(Text)).Replace("-", " ");
                    GBK = BitConverter.ToString(Encoding.GetEncoding("GB2312").GetBytes(Text)).Replace("-", " ");
                    Unicode = BitConverter.ToString(Encoding.Unicode.GetBytes(Text)).Replace("-", " ");
                    Utf_8 = BitConverter.ToString(Encoding.UTF8.GetBytes(Text)).Replace("-", " ");
                }
                else
                {
                    Text = "";
                    ANSI = "";
                    GBK = "";
                    Unicode = "";
                    Utf_8 = "";
                }
                break;
            default:
                break;
        }
    }
    catch (Exception ex)
    {

}
}
```

# 三.效果

![字符编码转换](https://s1.328888.xyz/2022/04/24/8X21i.png)

最后修改：2022 年 04 月 24 日 10 : 01 PM