c# gb2312转utf-8

Question

c#stringencoding

Answer 1

是乱码对吗？
/// <summary>
        /// GB2312转换成UTF8
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public static string gb2312_utf8(string text)
        {
            //声明字符集   
            System.Text.Encoding utf8, gb2312;
            //gb2312   
            gb2312 = System.Text.Encoding.GetEncoding("gb2312");
            //utf8   
            utf8 = System.Text.Encoding.GetEncoding("utf-8");
            byte[] gb;
            gb = gb2312.GetBytes(text);
            gb = System.Text.Encoding.Convert(gb2312, utf8, gb);
            //返回转换后的字符   
            return utf8.GetString(gb);
        }        /// <summary>
        /// UTF8转换成GB2312
        /// </summary>
        /// <param name="text"></param>
        /// <returns></returns>
        public static string utf8_gb2312(string text)
        {
            //声明字符集   
            System.Text.Encoding utf8, gb2312;
            //utf8   
            utf8 = System.Text.Encoding.GetEncoding("utf-8");
            //gb2312   
            gb2312 = System.Text.Encoding.GetEncoding("gb2312");
            byte[] utf;
            utf = utf8.GetBytes(text);
            utf = System.Text.Encoding.Convert(utf8, gb2312, utf);
            //返回转换后的字符   
            return gb2312.GetString(utf);
        }

Answer 2

如果文件中都是文本（没有二进制数据），那么大致地可以写类似这样的转换var tmp = Path.GetTempFileName();
string s;
using (var fr = File.OpenRead(path))
using (var rd = new StreamReader(fr, Encoding.GetEncoding("gb2312")))
using (var fw = File.OpenWrite(tmp))
using (var wt = new StreamWriter(fw, Encoding.UTF8))
{
    while (!rd.EndOfStream)
        wt.WriteLine(rd.ReadLine());
    if (!rd.EndOfStream)
        wt.Write(rd.ReadToEnd());
}
File.Move(tmp, path);

Answer 3

当然，如果文件很小，占用内存很少，你可以写成var data = File.ReadAllBytes(path);
data = Encoding.UTF8.GetBytes(Encoding.GetEncoding("gb2312").GetString(data));
File.WriteAllBytes(path, data);

Answer 4

还有GB2312 转utf8的代码
好神奇的样子

Answer 5

 if (radioButton1.Checked == true)
            {
                toolStripProgressBar1.Maximum = listView1.Items.Count;
                toolStripProgressBar1.Maximum = 0;
                for (int i = 0; i < listView1.Items.Count; i++)
                {
                    ///GB2312转换UTF8
                    string path = listView1.Items[i].SubItems[1].Text.ToString();
                    var data = File.ReadAllBytes(path);
                    data = Encoding.UTF8.GetBytes(Encoding.GetEncoding("gb2312").GetString(data));
                    File.WriteAllBytes(path, data);
                    toolStripProgressBar1.Value = i + 1;
                }
            }
            else
            {
                for (int i = 0; i < listView1.Items.Count; i++)
                {
                    ///UTF8转换GB2312
                    string path = listView1.Items[i].SubItems[1].Text.ToString();
                    var data = File.ReadAllBytes(path);
                    data = Encoding.GetEncoding("gb2312").GetBytes(Encoding.UTF8.GetString(data));
                    File.WriteAllBytes(path, data);
                    toolStripProgressBar1.Value = i + 1;
                }
            }
谢谢