ASP中如何将gb2312的encode转换成utf-8的encode

比如汉字“关键词”
gb2312的encode是 %B9%D8%BC%FC%B4%CA
utf-8的encode是%E5%85%B3%E9%94%AE%E8%AF%8D
我已知%B9%D8%BC%FC%B4%CA 如何得到%E5%85%B3%E9%94%AE%E8%AF%8D

List fileList = new List();
fileList.Add(@"D:\test.txt");

foreach (var file in fileList)
{
byte[] bytes;

using (StreamReader reader = new StreamReader(file, Encoding.GetEncoding("gb2312")))
{
bytes = System.Text.Encoding.GetEncoding("gb2312").GetBytes(reader.ReadToEnd());
}
using (StreamWriter writer = new StreamWriter(file))
{
writer.Write(System.Text.Encoding.UTF8.GetString(bytes));
}
}

试试吧，希望有用

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