Convert.TryFromBase64Chars(ReadOnlySpan<Char>, Span<Byte>, Int32) 方法
定义
尝试将包含用 base-64 数字编码的字符串表示形式的指定范围转换为 8 位无符号整数的范围。Tries to convert the specified span containing a string representation that is encoded with base-64 digits into a span of 8-bit unsigned integers.
public:
static bool TryFromBase64Chars(ReadOnlySpan<char> chars, Span<System::Byte> bytes, [Runtime::InteropServices::Out] int % bytesWritten);
public static bool TryFromBase64Chars (ReadOnlySpan<char> chars, Span<byte> bytes, out int bytesWritten);
static member TryFromBase64Chars : ReadOnlySpan<char> * Span<byte> * int -> bool
Public Shared Function TryFromBase64Chars (chars As ReadOnlySpan(Of Char), bytes As Span(Of Byte), ByRef bytesWritten As Integer) As Boolean
参数
- chars
- ReadOnlySpan<Char>
包含用 base-64 数字编码的字符串表示形式的范围。A span containing the string representation that is encoded with base-64 digits.
如果此方法返回 true,则为转换后的 8 位无符号整数。When this method returns true, the converted 8-bit unsigned integers. 此方法返回 false 时,范围将保持不变,或包含 chars 的不完整转换,直到最后一个有效字符。When this method returns false, either the span remains unmodified or contains an incomplete conversion of chars, up to the last valid character.
- bytesWritten
- Int32
此方法返回时,写入到 bytes 的字节数。When this method returns, the number of bytes that were written in bytes.
返回
如果转换成功,则为 true;否则为 false。true if the conversion was successful; otherwise, false.