Read txt to prevent reading garbled-automatically read according to the file encoding

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<summary>///Get the encoding format for the file///</summary> public class Encodingtype {//<summary> The path of the given file, reading the binary data of the file, judging the file encoding type///</summary>//<param name= "file_name" > File path </para m>///<returns> file encoding type </returns> public static System.Text.Encoding GetType (string file_name            {FileStream fs = new FileStream (file_name, FileMode.Open, FileAccess.Read);            Encoding r = GetType (FS); Fs.            Close ();        return R; }///<summary>///To determine the encoding type of the file by a given file stream///</summary>//<param name= "FS" > Text The encoding type of the piece flow </param>/////<returns> file </returns> public static System.Text.Encoding GetType (Files            Tream FS) {byte[] Unicode = new byte[] {0xFF, 0xFE, 0x41};            byte[] Unicodebig = new byte[] {0xFE, 0xFF, 0x00}; byte[] UTF8 = new byte[] {0xEF, 0xBB, 0xBF}; TakeBOM Encoding reVal = Encoding.default;            BinaryReader r = new BinaryReader (FS, System.Text.Encoding.Default);            int i; Int. TryParse (fs.            Length.tostring (), out i);            byte[] ss = R.readbytes (i); if (isutf8bytes (ss) | |            (Ss[0] = = 0xEF && ss[1] = = 0xBB && ss[2] = = 0xBF))            {reVal = Encoding.UTF8;  } else if (ss[0] = = 0xFE && ss[1] = = 0xFF && ss[2] = = 0x00) {ReVal =            Encoding.bigendianunicode;  } else if (ss[0] = = 0xFF && ss[1] = = 0xFE && ss[2] = = 0x41) {ReVal =            Encoding.unicode;            } r.close ();        return reVal; }///<summary>//To determine if it is a UTF8 format without BOM///</summary>//<param name= "Data" ></param>//<returns></returns> private static bool Isutf8bytes (byte[] data) {int charbytecounter = 1;//calculates the number of bytes that are currently being parsed Fu Ching byte curbyte;//bytes currently parsed. for (int i = 0; i < data. Length;                i++) {curbyte = Data[i];                        if (Charbytecounter = = 1) {if (Curbyte >= 0x80) {                            Judging the current while (((Curbyte <<= 1) & 0x80)! = 0) {                        charbytecounter++; }//Mark bit first if non 0 is at least 2 1 start as: 110XXXXX ...                            1111110X if (charbytecounter = = 1 | | charbytecounter > 6) {                        return false;                    }}} or else {//if UTF-8 at this time the first bit must be 1      if ((Curbyte & 0xC0)! = 0x80) {return false;              } charbytecounter--;            }} if (Charbytecounter > 1) {throw new Exception ("non-expected byte format");        } return true; }    }

How to use

String text= System.IO.File.ReadAllText (FName, FileEncoding.EncodingType.GetType (fName));

There are other codes to update the GetType method. The code is going to go, and I don't know how to add other encodings.

Read txt to prevent reading garbled-automatically read according to the file encoding