Convert.ToBase64String Convert.ToBase64String Convert.ToBase64String Convert.ToBase64String Method

定義

將 8 位元不帶正負號的整數陣列的值,轉換為使用 Base-64 位數編碼的相等字串表示。Converts the value of an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits.

多載

ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions) ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions) ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions) ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions)

將 8 位元不帶正負號的整數陣列子集,轉換為使用 Base-64 位數編碼的相等字串表示。Converts a subset of an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 參數會指定可在輸入陣列中當成位移 (Offset) 的子集、輸入陣列中要轉換的項目個數,以及是否要在傳回值中插入分行符號。Parameters specify the subset as an offset in the input array, the number of elements in the array to convert, and whether to insert line breaks in the return value.

ToBase64String(Byte[], Int32, Int32) ToBase64String(Byte[], Int32, Int32) ToBase64String(Byte[], Int32, Int32) ToBase64String(Byte[], Int32, Int32)

將 8 位元不帶正負號的整數陣列子集,轉換為使用 Base-64 位數編碼的相等字串表示。Converts a subset of an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 參數會將子集指定為輸入陣列中的位移 (Offset),以及所要轉換陣列中項目的個數。Parameters specify the subset as an offset in the input array, and the number of elements in the array to convert.

ToBase64String(Byte[], Base64FormattingOptions) ToBase64String(Byte[], Base64FormattingOptions) ToBase64String(Byte[], Base64FormattingOptions) ToBase64String(Byte[], Base64FormattingOptions)

將 8 位元不帶正負號的整數陣列,轉換為使用 Base-64 位數編碼的相等字串表示。Converts an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 參數可指定是否要在傳回值中插入分行符號。A parameter specifies whether to insert line breaks in the return value.

ToBase64String(Byte[]) ToBase64String(Byte[]) ToBase64String(Byte[]) ToBase64String(Byte[])

將 8 位元不帶正負號的整數陣列,轉換為使用 Base-64 位數編碼的相等字串表示。Converts an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits.

ToBase64String(ReadOnlySpan<Byte>, Base64FormattingOptions) ToBase64String(ReadOnlySpan<Byte>, Base64FormattingOptions) ToBase64String(ReadOnlySpan<Byte>, Base64FormattingOptions)

ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions) ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions) ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions) ToBase64String(Byte[], Int32, Int32, Base64FormattingOptions)

將 8 位元不帶正負號的整數陣列子集,轉換為使用 Base-64 位數編碼的相等字串表示。Converts a subset of an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 參數會指定可在輸入陣列中當成位移 (Offset) 的子集、輸入陣列中要轉換的項目個數,以及是否要在傳回值中插入分行符號。Parameters specify the subset as an offset in the input array, the number of elements in the array to convert, and whether to insert line breaks in the return value.

public:
 static System::String ^ ToBase64String(cli::array <System::Byte> ^ inArray, int offset, int length, Base64FormattingOptions options);
[System.Runtime.InteropServices.ComVisible(false)]
public static string ToBase64String (byte[] inArray, int offset, int length, Base64FormattingOptions options);
static member ToBase64String : byte[] * int * int * Base64FormattingOptions -> string
Public Shared Function ToBase64String (inArray As Byte(), offset As Integer, length As Integer, options As Base64FormattingOptions) As String

參數

inArray
Byte[]

8 位元不帶正負號的整數的陣列。An array of 8-bit unsigned integers.

offset
Int32 Int32 Int32 Int32

inArray 中的位移。An offset in inArray.

length
Int32 Int32 Int32 Int32

要轉換的 inArray 項目數目。The number of elements of inArray to convert.

options
Base64FormattingOptions Base64FormattingOptions Base64FormattingOptions Base64FormattingOptions

InsertLineBreaks 會在每 76 個字元之後插入分行符號;None 則不會插入分行符號。InsertLineBreaks to insert a line break every 76 characters, or None to not insert line breaks.

傳回

length 中開始於位置 inArrayoffset 項目的字串表示 (格式為 Base 64)。The string representation in base 64 of length elements of inArray, starting at position offset.

例外狀況

offsetlength 為負。offset or length is negative.

-或--or- offset 加上 length 大於 inArray 的長度。offset plus length is greater than the length of inArray.

範例

下列範例示範ToBase64String方法。The following example demonstrates the ToBase64String method. 輸入分為三個位元組 (24 位元) 每個群組。The input is divided into groups of three bytes (24 bits) each. 因此,每個群組包含四個每個數字,範圍從十進位的 0 到 63 的 6 位元數字。Consequently, each group consists of four 6-bit numbers where each number ranges from decimal 0 to 63. 在此範例中,有 85 3 位元組群組剩下 1 個位元組。In this example, there are 85 3-byte groups with one byte remaining. 第一個群組是由 00,01、 02、 產生四個等於十進位的 0、 0、 4 和 2 的 6 位元值的十六進位值所組成。The first group consists of the hexadecimal values 00, 01, and 02, which yield four 6-bit values equal to decimal 0, 0, 4, and 2. 這些四個值對應至的 base-64 位數"A"、"A"、"E"和"C"開頭的輸出。Those four values correspond to the base-64 digits "A", "A", "E", and "C" at the beginning of the output.

如果整數數字 3 位元組的群組不存在,剩餘的位元組會有效地以零填補來形成完整的群組。If an integral number of 3-byte groups does not exist, the remaining bytes are effectively padded with zeros to form a complete group. 在此範例中,最後一個位元組的值為十六進位 FF。In this example, the value of the last byte is hexadecimal FF. 第 6 位元等於十進位 63,對應為 base-64 位數"/"結尾的輸出,而接下來的 2 位元行會填補零,以產生對應到 base-64 數字,「 w 」 中的十進位 48。The first 6 bits are equal to decimal 63, which corresponds to the base-64 digit "/" at the end of the output, and the next 2 bits are padded with zeros to yield decimal 48, which corresponds to the base-64 digit, "w". 最後兩個的 6 位元值會填補,並對應至毫無用處填補字元,"="。The last two 6-bit values are padding and correspond to the valueless padding character, "=".

// This example demonstrates the Convert.ToBase64String() and 
//                               Convert.FromBase64String() methods
using namespace System;
bool ArraysAreEqual( array<Byte>^a1, array<Byte>^a2 );
int main()
{
   array<Byte>^inArray = gcnew array<Byte>(256);
   array<Byte>^outArray = gcnew array<Byte>(256);
   String^ s2;
   String^ s3;
   String^ step1 = "1) The input is a byte array (inArray) of arbitrary data.";
   String^ step2 = "2) Convert a subarray of the input data array to a base 64 string.";
   String^ step3 = "3) Convert the entire input data array to a base 64 string.";
   String^ step4 = "4) The two methods in steps 2 and 3 produce the same result: {0}";
   String^ step5 = "5) Convert the base 64 string to an output byte array (outArray).";
   String^ step6 = "6) The input and output arrays, inArray and outArray, are equal: {0}";
   int x;
   String^ nl = Environment::NewLine;
   String^ ruler1a = "         1         2         3         4";
   String^ ruler2a = "1234567890123456789012345678901234567890";
   String^ ruler3a = "----+----+----+----+----+----+----+----+";
   String^ ruler1b = "         5         6         7      ";
   String^ ruler2b = "123456789012345678901234567890123456";
   String^ ruler3b = "----+----+----+----+----+----+----+-";
   String^ ruler = String::Concat( ruler1a, ruler1b, nl, ruler2a, ruler2b, nl, ruler3a, ruler3b, nl );
   
   // 1) Display an arbitrary array of input data (inArray). The data could be 
   //    derived from user input, a file, an algorithm, etc.
   Console::WriteLine( step1 );
   Console::WriteLine();
   for ( x = 0; x < inArray->Length; x++ )
   {
      inArray[ x ] = (Byte)x;
      Console::Write( "{0:X2} ", inArray[ x ] );
      if ( ((x + 1) % 20) == 0 )
            Console::WriteLine();

   }
   Console::Write( "{0}{0}", nl );
   
   // 2) Convert a subarray of the input data to a base64 string. In this case, 
   //    the subarray is the entire input data array. New lines (CRLF) are inserted.
   Console::WriteLine( step2 );
   s2 = Convert::ToBase64String( inArray, 0, inArray->Length, Base64FormattingOptions::InsertLineBreaks );
   Console::WriteLine( "{0}{1}{2}{3}", nl, ruler, s2, nl );
   
   // 3) Convert the input data to a base64 string. In this case, the entire 
   //    input data array is converted by default. New lines (CRLF) are inserted.
   Console::WriteLine( step3 );
   s3 = Convert::ToBase64String( inArray, Base64FormattingOptions::InsertLineBreaks );
   
   // 4) Test whether the methods in steps 2 and 3 produce the same result.
   Console::WriteLine( step4, s2->Equals( s3 ) );
   
   // 5) Convert the base 64 string to an output array (outArray).
   Console::WriteLine( step5 );
   outArray = Convert::FromBase64String( s2 );
   
   // 6) Is outArray equal to inArray?
   Console::WriteLine( step6, ArraysAreEqual( inArray, outArray ) );
}

bool ArraysAreEqual( array<Byte>^a1, array<Byte>^a2 )
{
   if ( a1->Length != a2->Length )
      return false;

   for ( int i = 0; i < a1->Length; i++ )
      if ( a1[ i ] != a2[ i ] )
            return false;

   return true;
}

/*
This example produces the following results:

1) The input is a byte array (inArray) of arbitrary data.

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13
14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27
28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B
3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63
64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77
78 79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87 88 89 8A 8B
8C 8D 8E 8F 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3
B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF C0 C1 C2 C3 C4 C5 C6 C7
C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB
DC DD DE DF E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF
F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF

2) Convert a subarray of the input data array to a base 64 string.

         1         2         3         4         5         6         7
1234567890123456789012345678901234567890123456789012345678901234567890123456
----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-
AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4
OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3Bx
cnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmq
q6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj
5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==

3) Convert the entire input data array to a base 64 string.
4) The two methods in steps 2 and 3 produce the same result: True
5) Convert the base 64 string to an output byte array (outArray).
6) The input and output arrays, inArray and outArray, are equal: True

*/
// This example demonstrates the Convert.ToBase64String() and 
//                               Convert.FromBase64String() methods

using System;
class Sample 
{
    public static void Main() 
    {
    byte[] inArray  = new byte[256];
    byte[] outArray = new byte[256];
    string s2;
    string s3;
    string step1 = "1) The input is a byte array (inArray) of arbitrary data.";
    string step2 = "2) Convert a subarray of the input data array to a base 64 string.";
    string step3 = "3) Convert the entire input data array to a base 64 string.";
    string step4 = "4) The two methods in steps 2 and 3 produce the same result: {0}";
    string step5 = "5) Convert the base 64 string to an output byte array (outArray).";
    string step6 = "6) The input and output arrays, inArray and outArray, are equal: {0}";
    int x;
    string nl = Environment.NewLine;
    string ruler1a = "         1         2         3         4";
    string ruler2a = "1234567890123456789012345678901234567890";
    string ruler3a = "----+----+----+----+----+----+----+----+";
    string ruler1b = "         5         6         7      ";
    string ruler2b = "123456789012345678901234567890123456";
    string ruler3b = "----+----+----+----+----+----+----+-";
    string ruler   = String.Concat(ruler1a, ruler1b, nl, 
                                   ruler2a, ruler2b, nl,
                                   ruler3a, ruler3b, nl);

// 1) Display an arbitrary array of input data (inArray). The data could be 
//    derived from user input, a file, an algorithm, etc.

    Console.WriteLine(step1);
    Console.WriteLine();
    for (x = 0; x < inArray.Length; x++)
        {
        inArray[x] = (byte)x;
        Console.Write("{0:X2} ", inArray[x]);
        if (((x+1)%20) == 0) Console.WriteLine();
        }
    Console.Write("{0}{0}", nl);

// 2) Convert a subarray of the input data to a base64 string. In this case, 
//    the subarray is the entire input data array. New lines (CRLF) are inserted.

    Console.WriteLine(step2);
    s2 = Convert.ToBase64String(inArray, 0, inArray.Length, 
                                Base64FormattingOptions.InsertLineBreaks);
    Console.WriteLine("{0}{1}{2}{3}", nl, ruler, s2, nl);

// 3) Convert the input data to a base64 string. In this case, the entire 
//    input data array is converted by default. New lines (CRLF) are inserted.

    Console.WriteLine(step3);
    s3 = Convert.ToBase64String(inArray, Base64FormattingOptions.InsertLineBreaks);

// 4) Test whether the methods in steps 2 and 3 produce the same result.
    Console.WriteLine(step4, s2.Equals(s3));

// 5) Convert the base 64 string to an output array (outArray).
    Console.WriteLine(step5);
    outArray = Convert.FromBase64String(s2);

// 6) Is outArray equal to inArray?
   Console.WriteLine(step6, ArraysAreEqual(inArray, outArray));
   }

    public static bool ArraysAreEqual(byte[] a1, byte[] a2)
    {
    if (a1.Length != a2.Length) return false;
    for (int i = 0; i < a1.Length; i++)
        if (a1[i] != a2[i]) return false;
    return true;
    }
}
/*
This example produces the following results:

1) The input is a byte array (inArray) of arbitrary data.

00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13
14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27
28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B
3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63
64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77
78 79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87 88 89 8A 8B
8C 8D 8E 8F 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F
A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3
B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF C0 C1 C2 C3 C4 C5 C6 C7
C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB
DC DD DE DF E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF
F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF

2) Convert a subarray of the input data array to a base 64 string.

         1         2         3         4         5         6         7
1234567890123456789012345678901234567890123456789012345678901234567890123456
----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-
AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4
OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3Bx
cnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmq
q6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj
5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==

3) Convert the entire input data array to a base 64 string.
4) The two methods in steps 2 and 3 produce the same result: True
5) Convert the base 64 string to an output byte array (outArray).
6) The input and output arrays, inArray and outArray, are equal: True

*/
' This example demonstrates the Convert.ToBase64String() and 
'                               Convert.FromBase64String() methods
Class Sample
   Public Shared Sub Main()
      Dim inArray(255)  As Byte
      Dim outArray(255) As Byte
      Dim s2 As String
      Dim s3 As String
      Dim step1 As String = "1) The input is a byte array (inArray) of arbitrary data."
      Dim step2 As String = "2) Convert a subarray of the input data array to a base 64 string."
      Dim step3 As String = "3) Convert the entire input data array to a base 64 string."
      Dim step4 As String = "4) The two methods in steps 2 and 3 produce the same result: {0}"
      Dim step5 As String = "5) Convert the base 64 string to an output byte array (outArray)."
      Dim step6 As String = "6) The input and output arrays, inArray and outArray, are equal: {0}"
      Dim x As Integer
      Dim nl As String = Environment.NewLine
      Dim ruler1a As String = "         1         2         3         4"
      Dim ruler2a As String = "1234567890123456789012345678901234567890"
      Dim ruler3a As String = "----+----+----+----+----+----+----+----+"
      Dim ruler1b As String = "         5         6         7      "
      Dim ruler2b As String = "123456789012345678901234567890123456"
      Dim ruler3b As String = "----+----+----+----+----+----+----+-"
      Dim ruler As String = [String].Concat(ruler1a, ruler1b, nl, ruler2a, ruler2b, nl, ruler3a, ruler3b, nl)
      
      ' 1) Display an arbitrary array of input data (inArray). The data could be 
      '    derived from user input, a file, an algorithm, etc.
      Console.WriteLine(step1)
      Console.WriteLine()
      For x = 0 To inArray.Length - 1
         inArray(x) = CByte(x)
         Console.Write("{0:X2} ", inArray(x))
         If (x + 1) Mod 20 = 0 Then
            Console.WriteLine()
         End If
      Next x
      Console.Write("{0}{0}", nl)
      
      ' 2) Convert a subarray of the input data to a base64 string. In this case, 
      '    the subarray is the entire input data array. New lines (CRLF) are inserted.
      Console.WriteLine(step2)
      s2 = Convert.ToBase64String(inArray, 0, inArray.Length, _
                                  Base64FormattingOptions.InsertLineBreaks)
      Console.WriteLine("{0}{1}{2}{3}", nl, ruler, s2, nl)
      
      ' 3) Convert the input data to a base64 string. In this case, the entire 
      '    input data array is converted by default. New lines (CRLF) are inserted.
      Console.WriteLine(step3)
      s3 = Convert.ToBase64String(inArray, Base64FormattingOptions.InsertLineBreaks)
      
      ' 4) Test whether the methods in steps 2 and 3 produce the same result.
      Console.WriteLine(step4, s2.Equals(s3))
      
      ' 5) Convert the base 64 string to an output array (outArray).
      Console.WriteLine(step5)
      outArray = Convert.FromBase64String(s2)
      
      ' 6) Is outArray equal to inArray?
      Console.WriteLine(step6, ArraysAreEqual(inArray, outArray))
   End Sub 'Main
   
   
   Public Shared Function ArraysAreEqual(a1() As Byte, a2() As Byte) As Boolean
      If a1.Length <> a2.Length Then
         Return False
      End If
      Dim i As Integer
      For i = 0 To a1.Length - 1
         If a1(i) <> a2(i) Then
            Return False
         End If
      Next i
      Return True
   End Function 'ArraysAreEqual
End Class 'Sample
'
'This example produces the following results:
'
'1) The input is a byte array (inArray) of arbitrary data.
'
'00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13
'14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27
'28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B
'3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F
'50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63
'64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77
'78 79 7A 7B 7C 7D 7E 7F 80 81 82 83 84 85 86 87 88 89 8A 8B
'8C 8D 8E 8F 90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F
'A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF B0 B1 B2 B3
'B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF C0 C1 C2 C3 C4 C5 C6 C7
'C8 C9 CA CB CC CD CE CF D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB
'DC DD DE DF E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF
'F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF
'
'2) Convert a subarray of the input data array to a base 64 string.
'
'         1         2         3         4         5         6         7
'1234567890123456789012345678901234567890123456789012345678901234567890123456
'----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+-
'AAECAwQFBgcICQoLDA0ODxAREhMUFRYXGBkaGxwdHh8gISIjJCUmJygpKissLS4vMDEyMzQ1Njc4
'OTo7PD0+P0BBQkNERUZHSElKS0xNTk9QUVJTVFVWV1hZWltcXV5fYGFiY2RlZmdoaWprbG1ub3Bx
'cnN0dXZ3eHl6e3x9fn+AgYKDhIWGh4iJiouMjY6PkJGSk5SVlpeYmZqbnJ2en6ChoqOkpaanqKmq
'q6ytrq+wsbKztLW2t7i5uru8vb6/wMHCw8TFxsfIycrLzM3Oz9DR0tPU1dbX2Nna29zd3t/g4eLj
'5OXm5+jp6uvs7e7v8PHy8/T19vf4+fr7/P3+/w==
'
'3) Convert the entire input data array to a base 64 string.
'4) The two methods in steps 2 and 3 produce the same result: True
'5) Convert the base 64 string to an output byte array (outArray).
'6) The input and output arrays, inArray and outArray, are equal: True
'

備註

項目inArray參數會將其視為一個數字值和轉換成字串表示,格式為 base 64。The elements of the inArray parameter are taken as a numeric value and converted to a string representation in base 64.

Base-64 位數,按遞增順序由零是大寫字元"A"到"Z"、 小寫字元"a"到"z"、 數字"0"到"9",以及符號"+"和"/"。The base-64 digits in ascending order from zero are the uppercase characters "A" to "Z", the lowercase characters "a" to "z", the numerals "0" to "9", and the symbols "+" and "/". 過去的字元"="用於尾端填補。The valueless character "=" is used for trailing padding.

offsetlength參數是 32 位元帶正負號的數字。The offset and length parameters are 32-bit signed numbers. offset參數是以零為起始。The offset parameter is zero-based.

重要

ToBase64String方法專門設計用來處理單一位元組陣列,其中包含要編碼的所有資料。The ToBase64String method is designed to process a single byte array that contains all the data to be encoded. 若要將資料從資料流的編碼,請使用System.Security.Cryptography.ToBase64Transform類別。To encode data from a stream, use the System.Security.Cryptography.ToBase64Transform class.

如果options參數設為InsertLineBreaks和轉換的輸出是超過 76 個字元,會插入分行符號每 76 個字元。If the options parameter is set to InsertLineBreaks and the output of the conversion is longer than 76 characters, a line break is inserted every 76 characters. 換行符號的定義是歸位字元 (U + 000 D) 後面接著行換頁字元 (U + 000A)。A line break is defined as a carriage return character (U+000D) followed by a line feed character (U+000A). 如需詳細資訊,請參閱 RFC 2045,「 多用途網際網路郵件延伸 」,網址 https://www.rfc-editor.org/ For more information, see RFC 2045, "Multipurpose Internet Mail Extensions", at https://www.rfc-editor.org/.

另請參閱

ToBase64String(Byte[], Int32, Int32) ToBase64String(Byte[], Int32, Int32) ToBase64String(Byte[], Int32, Int32) ToBase64String(Byte[], Int32, Int32)

將 8 位元不帶正負號的整數陣列子集,轉換為使用 Base-64 位數編碼的相等字串表示。Converts a subset of an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 參數會將子集指定為輸入陣列中的位移 (Offset),以及所要轉換陣列中項目的個數。Parameters specify the subset as an offset in the input array, and the number of elements in the array to convert.

public:
 static System::String ^ ToBase64String(cli::array <System::Byte> ^ inArray, int offset, int length);
public static string ToBase64String (byte[] inArray, int offset, int length);
static member ToBase64String : byte[] * int * int -> string
Public Shared Function ToBase64String (inArray As Byte(), offset As Integer, length As Integer) As String

參數

inArray
Byte[]

8 位元不帶正負號的整數的陣列。An array of 8-bit unsigned integers.

offset
Int32 Int32 Int32 Int32

inArray 中的位移。An offset in inArray.

length
Int32 Int32 Int32 Int32

要轉換的 inArray 項目數目。The number of elements of inArray to convert.

傳回

length 中開始於位置 inArrayoffset 項目的字串表示 (格式為 Base 64)。The string representation in base 64 of length elements of inArray, starting at position offset.

例外狀況

offsetlength 為負。offset or length is negative.

-或--or- offset 加上 length 大於 inArray 的長度。offset plus length is greater than the length of inArray.

備註

項目inArray會將其視為一個數字值和轉換成字串表示,格式為 base 64。The elements of inArray are taken as a numeric value and converted to a string representation in base 64.

Base-64 位數,按遞增順序由零是大寫字元"A"到"Z"、 小寫字元"a"到"z"、 數字"0"到"9",以及符號"+"和"/"。The base-64 digits in ascending order from zero are the uppercase characters "A" to "Z", the lowercase characters "a" to "z", the numerals "0" to "9", and the symbols "+" and "/". 過去的字元,"="、 用於尾端填補。The valueless character, "=", is used for trailing padding.

offsetlength參數是 32 位元帶正負號的數字。The offset and length parameters are 32-bit signed numbers. offset參數是以零為起始。The offset parameter is zero-based.

重要

ToBase64String方法專門設計用來處理單一位元組陣列,其中包含要編碼的所有資料。The ToBase64String method is designed to process a single byte array that contains all the data to be encoded. 若要將資料從資料流的編碼,請使用System.Security.Cryptography.ToBase64Transform類別。To encode data from a stream, use the System.Security.Cryptography.ToBase64Transform class.

另請參閱

ToBase64String(Byte[], Base64FormattingOptions) ToBase64String(Byte[], Base64FormattingOptions) ToBase64String(Byte[], Base64FormattingOptions) ToBase64String(Byte[], Base64FormattingOptions)

將 8 位元不帶正負號的整數陣列,轉換為使用 Base-64 位數編碼的相等字串表示。Converts an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits. 參數可指定是否要在傳回值中插入分行符號。A parameter specifies whether to insert line breaks in the return value.

public:
 static System::String ^ ToBase64String(cli::array <System::Byte> ^ inArray, Base64FormattingOptions options);
[System.Runtime.InteropServices.ComVisible(false)]
public static string ToBase64String (byte[] inArray, Base64FormattingOptions options);
static member ToBase64String : byte[] * Base64FormattingOptions -> string
Public Shared Function ToBase64String (inArray As Byte(), options As Base64FormattingOptions) As String

參數

inArray
Byte[]

8 位元不帶正負號的整數的陣列。An array of 8-bit unsigned integers.

options
Base64FormattingOptions Base64FormattingOptions Base64FormattingOptions Base64FormattingOptions

InsertLineBreaks 會在每 76 個字元之後插入分行符號;None 則不會插入分行符號。InsertLineBreaks to insert a line break every 76 characters, or None to not insert line breaks.

傳回

inArray 中項目的字串表示 (格式為 Base 64)。The string representation in base 64 of the elements in inArray.

例外狀況

範例

下列範例會呼叫Convert.ToBase64String(Byte[], Base64FormattingOptions)Base64FormattingOptions.InsertLineBreaks編碼所產生的 100 個元素的位元組陣列的字串中的插入列的引數會中斷。The following example calls the Convert.ToBase64String(Byte[], Base64FormattingOptions) with a Base64FormattingOptions.InsertLineBreaks argument to insert line breaks in the string that is produced by encoding a 100-element byte array.

using System;

public class Example
{
   public static void Main()
   {
       // Define a byte array.
       Byte[] bytes = new Byte[100];
       int originalTotal = 0;
       for (int ctr = 0; ctr <= bytes.GetUpperBound(0); ctr++) {
          bytes[ctr] = (byte)(ctr + 1);
          originalTotal += bytes[ctr];
       }
       // Display summary information about the array.
       Console.WriteLine("The original byte array:");
       Console.WriteLine("   Total elements: {0}", bytes.Length);
       Console.WriteLine("   Length of String Representation: {0}",
                         BitConverter.ToString(bytes).Length);
       Console.WriteLine("   Sum of elements: {0:N0}", originalTotal);                  
       Console.WriteLine();
       
       // Convert the array to a base 64 sring.
       String s = Convert.ToBase64String(bytes, 
                                         Base64FormattingOptions.InsertLineBreaks);
       Console.WriteLine("The base 64 string:\n   {0}\n", s);
       
       // Restore the byte array.
       Byte[] newBytes = Convert.FromBase64String(s);
       int newTotal = 0;
       foreach (var newByte in newBytes)
          newTotal += newByte;

       // Display summary information about the restored array.
       Console.WriteLine("   Total elements: {0}", newBytes.Length);
       Console.WriteLine("   Length of String Representation: {0}",
                         BitConverter.ToString(newBytes).Length);
       Console.WriteLine("   Sum of elements: {0:N0}", newTotal);                  
   }
}
// The example displays the following output:
//   The original byte array:
//      Total elements: 100
//      Length of String Representation: 299
//      Sum of elements: 5,050
//   
//   The base 64 string:
//      AQIDBAUGBwgJCgsMDQ4PEBESExQVFhcYGRobHB0eHyAhIiMkJSYnKCkqKywtLi8wMTIzNDU2Nzg5
//   Ojs8PT4/QEFCQ0RFRkdISUpLTE1OT1BRUlNUVVZXWFlaW1xdXl9gYWJjZA==
//   
//      Total elements: 100
//      Length of String Representation: 299
//      Sum of elements: 5,050
Module Example
   Public Sub Main()
       ' Define a byte array.
       Dim bytes(99) As Byte
       Dim originalTotal As Integer = 0
       For ctr As Integer = 0 To bytes.GetUpperBound(0)
          bytes(ctr) = CByte(ctr + 1)
          originalTotal += bytes(ctr)
       Next
       ' Display summary information about the array.
       Console.WriteLine("The original byte array:")
       Console.WriteLine("   Total elements: {0}", bytes.Length)
       Console.WriteLine("   Length of String Representation: {0}",
                         BitConverter.ToString(bytes).Length)
       Console.WriteLine("   Sum of elements: {0:N0}", originalTotal)                  
       Console.WriteLine()
       
       ' Convert the array to a base 64 sring.
       Dim s As String = Convert.ToBase64String(bytes, 
                                               Base64FormattingOptions.InsertLineBreaks)
       Console.WriteLine("The base 64 string:{1}   {0}{1}", 
                         s, vbCrLf)
       
       ' Restore the byte array.
       Dim newBytes() As Byte = Convert.FromBase64String(s)
       Dim newTotal As Integer = 0
       For Each newByte In newBytes
          newTotal += newByte
       Next
       ' Display summary information about the restored array.
       Console.WriteLine("   Total elements: {0}", newBytes.Length)
       Console.WriteLine("   Length of String Representation: {0}",
                         BitConverter.ToString(newBytes).Length)
       Console.WriteLine("   Sum of elements: {0:N0}", newTotal)                  
   End Sub
End Module
' The example displays the following output:
'   The original byte array:
'      Total elements: 100
'      Length of String Representation: 299
'      Sum of elements: 5,050
'   
'   The base 64 string:
'      AQIDBAUGBwgJCgsMDQ4PEBESExQVFhcYGRobHB0eHyAhIiMkJSYnKCkqKywtLi8wMTIzNDU2Nzg5
'   Ojs8PT4/QEFCQ0RFRkdISUpLTE1OT1BRUlNUVVZXWFlaW1xdXl9gYWJjZA==
'   
'      Total elements: 100
'      Length of String Representation: 299
'      Sum of elements: 5,050

做為範例所示,從輸出Convert.FromBase64String成功還原原始的位元組陣列; 分行符號字元會在轉換期間忽略。As the output from the example shows, the Convert.FromBase64String succeeds in restoring the original byte array; the line break characters are ignored during the conversion.

備註

項目inArray參數會將其視為一個數字值和轉換成字串表示,格式為 base 64。The elements of the inArray parameter are taken as a numeric value and converted to a string representation in base 64.

Base-64 位數,按遞增順序由零是大寫字元"A"到"Z"、 小寫字元"a"到"z"、 數字"0"到"9",以及符號"+"和"/"。The base-64 digits in ascending order from zero are the uppercase characters "A" to "Z", the lowercase characters "a" to "z", the numerals "0" to "9", and the symbols "+" and "/". 過去的字元"="用於尾端填補。The valueless character "=" is used for trailing padding.

重要

ToBase64String方法專門設計用來處理單一位元組陣列,其中包含要編碼的所有資料。The ToBase64String method is designed to process a single byte array that contains all the data to be encoded. 若要將資料從資料流的編碼,請使用System.Security.Cryptography.ToBase64Transform類別。To encode data from a stream, use the System.Security.Cryptography.ToBase64Transform class.

如果options參數設為InsertLineBreaks和轉換的輸出是超過 76 個字元,會插入分行符號每 76 個字元。If the options parameter is set to InsertLineBreaks and the output of the conversion is longer than 76 characters, a line break is inserted every 76 characters. 換行符號的定義是歸位字元 (U + 000 D) 後面接著行換頁字元 (U + 000A)。A line break is defined as a carriage return character (U+000D) followed by a line feed character (U+000A). 換行符號會被視為在 base-64 編碼的空格字元,因為它們時,會忽略轉換 base-64 編碼字串的位元組陣列。Because line breaks are considered white-space characters in a base-64 encoding, they are ignored when converting a base-64 encoded string back to a byte array. 控制項或裝置,例如主控台視窗中顯示的已編碼的字串時,會只是方便的分行符號。The line breaks are simply convenient when displaying the encoded string to a control or a device such as a console window. 如需詳細資訊,請參閱 RFC 2045,「 多用途網際網路郵件延伸 」,網址 https://www.rfc-editor.org/ For more information, see RFC 2045, "Multipurpose Internet Mail Extensions", at https://www.rfc-editor.org/.

另請參閱

ToBase64String(Byte[]) ToBase64String(Byte[]) ToBase64String(Byte[]) ToBase64String(Byte[])

將 8 位元不帶正負號的整數陣列,轉換為使用 Base-64 位數編碼的相等字串表示。Converts an array of 8-bit unsigned integers to its equivalent string representation that is encoded with base-64 digits.

public:
 static System::String ^ ToBase64String(cli::array <System::Byte> ^ inArray);
public static string ToBase64String (byte[] inArray);
static member ToBase64String : byte[] -> string
Public Shared Function ToBase64String (inArray As Byte()) As String

參數

inArray
Byte[]

8 位元不帶正負號的整數的陣列。An array of 8-bit unsigned integers.

傳回

inArray 之內容的字串表示 (格式為 Base 64)。The string representation, in base 64, of the contents of inArray.

例外狀況

範例

下列範例會使用ToBase64String(Byte[])方法,以將位元組陣列轉換成使用 uuencode 編碼 (base64) 字串,然後再呼叫FromBase64String(String)方法來還原原始的位元組陣列。The following example uses the ToBase64String(Byte[]) method to convert a byte array to a UUencoded (base-64) string, and then calls the FromBase64String(String) method to restore the original byte array.

using System;

public class Example
{
   public static void Main()
   {
       // Define a byte array.
       byte[] bytes = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 };
       Console.WriteLine("The byte array: ");
       Console.WriteLine("   {0}\n", BitConverter.ToString(bytes));
       
       // Convert the array to a base 64 sring.
       String s = Convert.ToBase64String(bytes);
       Console.WriteLine("The base 64 string:\n   {0}\n", s);
       
       // Restore the byte array.
       byte[] newBytes = Convert.FromBase64String(s);
       Console.WriteLine("The restored byte array: ");
       Console.WriteLine("   {0}\n", BitConverter.ToString(newBytes));
   }
}
// The example displays the following output:
//     The byte array:
//        02-04-06-08-0A-0C-0E-10-12-14
//     
//     The base 64 string:
//        AgQGCAoMDhASFA==
//     
//     The restored byte array:
//        02-04-06-08-0A-0C-0E-10-12-14
Module Example
   Public Sub Main()
       ' Define a byte array.
       Dim bytes() As Byte = { 2, 4, 6, 8, 10, 12, 14, 16, 18, 20 }
       Console.WriteLine("The byte array: ")
       Console.WriteLine("   {0}", BitConverter.ToString(bytes))
       Console.WriteLine()
       
       ' Convert the array to a base 64 sring.
       Dim s As String = Convert.ToBase64String(bytes)
       Console.WriteLine("The base 64 string:{1}   {0}{1}", 
                         s, vbCrLf)
       
       ' Restore the byte array.
       Dim newBytes() As Byte = Convert.FromBase64String(s)
       Console.WriteLine("The restored byte array: ")
       Console.WriteLine("   {0}", BitConverter.ToString(newBytes))
       Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'     The byte array:
'        02-04-06-08-0A-0C-0E-10-12-14
'     
'     The base 64 string:
'        AgQGCAoMDhASFA==
'     
'     The restored byte array:
'        02-04-06-08-0A-0C-0E-10-12-14

以下是更複雜的範例會建立 32 位元整數的 20 個元素陣列。The following is a more complex example that creates a 20-element array of 32-bit integers. 然後它會使用BitConverter.GetBytes(Int32)方法,將每個項目轉換為位元組陣列,它會儲存在緩衝區中的適當位置呼叫Array.Copy(Array, Int32, Array, Int32, Int32)方法。It then uses the BitConverter.GetBytes(Int32) method to convert each element into a byte array, which it stores in the appropriate position in a buffer by calling the Array.Copy(Array, Int32, Array, Int32, Int32) method. 這個緩衝區會傳遞至ToBase64String(Byte[])方法來建立使用 uuencode 編碼 (base64) 字串。This buffer is then passed to the ToBase64String(Byte[]) method to create a UUencoded (base-64) string. 然後它會呼叫FromBase64String(String)方法來解碼的 uuencode 編碼字串和呼叫BitConverter.ToInt32方法,將每一組的四個位元組 (32 位元整數的大小) 轉換成整數。It then calls the FromBase64String(String) method to decode the UUencoded string, and calls the BitConverter.ToInt32 method to convert each set of four bytes (the size of a 32-bit integer) to an integer. 範例輸出顯示已成功還原原始的陣列。The output from the example shows that the original array has been successfully restored.

using System;

public class Example
{
   public static void Main()
   {
      // Define an array of 20 elements and display it.
      int[] arr = new int[20]; 
      int value = 1;
      for (int ctr = 0; ctr <= arr.GetUpperBound(0); ctr++) {
         arr[ctr] = value;
         value = value * 2 + 1;
      }
      DisplayArray(arr);

      // Convert the array of integers to a byte array.
      byte[] bytes = new byte[arr.Length * 4];
      for (int ctr = 0; ctr < arr.Length; ctr++) {
         Array.Copy(BitConverter.GetBytes(arr[ctr]), 0, 
                    bytes, ctr * 4, 4);
      }
         
      // Encode the byte array using Base64 encoding
      String base64 = Convert.ToBase64String(bytes);
      Console.WriteLine("The encoded string: ");
      for (int ctr = 0; ctr <= base64.Length / 50; ctr++) 
         Console.WriteLine(base64.Substring(ctr * 50, 
                                            ctr * 50 + 50 <= base64.Length 
                                               ? 50 : base64.Length - ctr * 50));
      Console.WriteLine();
      
      // Convert the string back to a byte array.
      byte[] newBytes = Convert.FromBase64String(base64);

      // Convert the byte array back to an integer array.
      int[] newArr = new int[newBytes.Length/4];
      for (int ctr = 0; ctr < newBytes.Length / 4; ctr ++)
         newArr[ctr] = BitConverter.ToInt32(newBytes, ctr * 4);
         
      DisplayArray(newArr);
   }

   private static void DisplayArray(Array arr)
   {
      Console.WriteLine("The array:");
      Console.Write("{ ");
      for (int ctr = 0; ctr < arr.GetUpperBound(0); ctr++) {
         Console.Write("{0}, ", arr.GetValue(ctr));
         if ((ctr + 1) % 10 == 0) 
            Console.Write("\n  ");
      }
      Console.WriteLine("{0} {1}", arr.GetValue(arr.GetUpperBound(0)), "}");
      Console.WriteLine();
   }
}
// The example displays the following output:
// The array:
// { 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023,
//   2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575 }
// 
// The encoded string:
// AQAAAAMAAAAHAAAADwAAAB8AAAA/AAAAfwAAAP8AAAD/AQAA/w
// MAAP8HAAD/DwAA/x8AAP8/AAD/fwAA//8AAP//AQD//wMA//8H
// 
// The array:
// { 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023,
//   2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575 }
Module Example
   Public Sub Main()
      ' Define an array of 20 elements and display it.
      Dim arr(19) As Integer 
      Dim value As Integer = 1
      For ctr As Integer = 0 To arr.GetUpperBound(0)
         arr(ctr) = value
         value = value * 2 + 1
      Next
      DisplayArray(arr)

      ' Convert the array of integers to a byte array.
      Dim bytes(arr.Length * 4 - 1) As Byte 
      For ctr As Integer = 0 To arr.Length - 1
         Array.Copy(BitConverter.GetBytes(arr(ctr)), 0, 
                    bytes, ctr * 4, 4)
      Next
         
      ' Encode the byte array using Base64 encoding
      Dim base64 As String = Convert.ToBase64String(bytes)
      Console.WriteLine("The encoded string: ")
      For ctr As Integer = 0 To base64.Length \ 50 - 1 
         Console.WriteLine(base64.Substring(ctr * 50, 
                                            If(ctr * 50 + 50 <= base64.Length, 
                                               50, base64.Length - ctr * 50)))
      Next
      Console.WriteLine()
      
      ' Convert the string back to a byte array.
      Dim newBytes() As Byte = Convert.FromBase64String(base64)

      ' Convert the byte array back to an integer array.
      Dim newArr(newBytes.Length\4 - 1) As Integer
      For ctr As Integer = 0 To newBytes.Length \ 4 - 1
         newArr(ctr) = BitConverter.ToInt32(newBytes, ctr * 4)
      Next   
      DisplayArray(newArr)
   End Sub

   Private Sub DisplayArray(arr As Array)
      Console.WriteLine("The array:")
      Console.Write("{ ")
      For ctr As Integer = 0 To arr.GetUpperBound(0) - 1
         Console.Write("{0}, ", arr.GetValue(ctr))
         If (ctr + 1) Mod 10 = 0 Then Console.Write("{0}  ", vbCrLf)
      Next
      Console.WriteLine("{0} {1}", arr.GetValue(arr.GetUpperBound(0)), "}")
      Console.WriteLine()
   End Sub
End Module
' The example displays the following output:
'     The array:
'     { 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023,
'       2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575 }
'     
'     The encoded string:
'     AQAAAAMAAAAHAAAADwAAAB8AAAA/AAAAfwAAAP8AAAD/AQAA/w
'     MAAP8HAAD/DwAA/x8AAP8/AAD/fwAA//8AAP//AQD//wMA//8H
'     
'     The array:
'     { 1, 3, 7, 15, 31, 63, 127, 255, 511, 1023,
'       2047, 4095, 8191, 16383, 32767, 65535, 131071, 262143, 524287, 1048575 }

備註

項目inArray會將其視為一個數字值和轉換為使用 base-64 位數編碼的字串表示。The elements of inArray are taken as a numeric value and converted to a string representation that is encoded with base-64 digits.

Base-64 位數,按遞增順序由零是大寫字元"A"到"Z"、 小寫字元"a"到"z"、 數字"0"到"9",以及符號"+"和"/"。The base-64 digits in ascending order from zero are the uppercase characters "A" to "Z", the lowercase characters "a" to "z", the numerals "0" to "9", and the symbols "+" and "/". 過去的字元,"="、 用於尾端填補。The valueless character, "=", is used for trailing padding.

重要

ToBase64String方法專門設計用來處理單一位元組陣列,其中包含要編碼的所有資料。The ToBase64String method is designed to process a single byte array that contains all the data to be encoded. 若要將資料從資料流的編碼,請使用System.Security.Cryptography.ToBase64Transform類別。To encode data from a stream, use the System.Security.Cryptography.ToBase64Transform class.

一般情況下,ToBase64String方法不是用來反覆存取使用 uuencode 編碼 (base-64 編碼) 字串。Ordinarily, the ToBase64String method is not used to round-trip a UUEncoded (base-64 encoded) string. 也就是說,如果您藉由呼叫解碼字串FromBase64String方法,然後將傳回的位元組陣列編碼藉由呼叫ToBase64String方法,產生的字串不一定會完全相同的原始字串。That is, if you decode a string by calling the FromBase64String method, then encode the returned byte array by calling the ToBase64String method, the resulting string will not necessarily be identical to the original string. 只有原始字串是有效的 base-64 編碼的字串,字串將會反覆存取。The string will round-trip only if the original string is a valid base-64 encoded string.

另請參閱

ToBase64String(ReadOnlySpan<Byte>, Base64FormattingOptions) ToBase64String(ReadOnlySpan<Byte>, Base64FormattingOptions) ToBase64String(ReadOnlySpan<Byte>, Base64FormattingOptions)

public static string ToBase64String (ReadOnlySpan<byte> bytes, Base64FormattingOptions options = System.Base64FormattingOptions.None);
static member ToBase64String : ReadOnlySpan<byte> * Base64FormattingOptions -> string
Public Shared Function ToBase64String (bytes As ReadOnlySpan(Of Byte), Optional options As Base64FormattingOptions = System.Base64FormattingOptions.None) As String

參數

傳回

適用於