除了选择的答案，如果你使用。net 3.5或。net 3.5 CE，你必须指定解码的第一个字节的索引，以及解码的字节数:

string result = System.Text.Encoding.UTF8.GetString(byteArray, 0, byteArray.Length);

将字节[]转换为字符串似乎很简单，但任何一种编码都有可能把输出字符串弄乱。这个小函数只是工作，没有任何意想不到的结果:

private string ToString(byte[] bytes)
{
    string response = string.Empty;

    foreach (byte b in bytes)
        response += (Char)b;

    return response;
}

string result = ASCIIEncoding.UTF8.GetString(byteArray);

BitConverter类可用于将字节[]转换为字符串。

var convertedString = BitConverter.ToString(byteAttay);

BitConverter类的文档可以在MSDN上打印。

定义:

public static string ConvertByteToString(this byte[] source)
{
    return source != null ? System.Text.Encoding.UTF8.GetString(source) : null;
}

使用:

string result = input.ConvertByteToString();

我在这篇文章中看到了一些答案，这可能被认为是完整的基础知识，因为我在c#编程中有几种方法来解决相同的问题。唯一需要考虑的是纯UTF-8和带有BOM的UTF-8之间的区别。

Last week, at my job, I needed to develop one functionality that outputs CSV files with a BOM and other CSV files with pure UTF-8 (without a BOM). Each CSV file encoding type will be consumed by different non-standardized APIs. One API reads UTF-8 with a BOM and the other API reads without a BOM. I needed to research the references about this concept, reading the "What's the difference between UTF-8 and UTF-8 without BOM?" Stack Overflow question, and the Wikipedia article "Byte order mark" to build my approach.

最后，我的c#编程的UTF-8编码类型(BOM和纯)需要类似于下面的例子:

// For UTF-8 with BOM, equals shared by Zanoni (at top)
string result = System.Text.Encoding.UTF8.GetString(byteArray);

//for Pure UTF-8 (without B.O.M.)
string result = (new UTF8Encoding(false)).GetString(byteArray);