EncoderReplacementFallbackBuffer Class


The .NET API Reference documentation has a new home. Visit the .NET API Browser on docs.microsoft.com to see the new experience.

Represents a substitute input string that is used when the original input character cannot be encoded. This class cannot be inherited.

Namespace:   System.Text
Assembly:  mscorlib (in mscorlib.dll)


type EncoderReplacementFallbackBuffer = 
        inherit EncoderFallbackBuffer


Initializes a new instance of the EncoderReplacementFallbackBuffer class using the value of a EncoderReplacementFallback object.


Gets the number of characters in the replacement fallback buffer that remain to be processed.(Overrides EncoderFallbackBuffer.Remaining.)


Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_pubmethodFallback(Char, Char, Int32)

Indicates whether a replacement string can be used when an input surrogate pair cannot be encoded, or whether the surrogate pair can be ignored. Parameters specify the surrogate pair and the index position of the pair in the input.(Overrides EncoderFallbackBuffer.Fallback(Char, Char, Int32).)

System_CAPS_pubmethodFallback(Char, Int32)

Prepares the replacement fallback buffer to use the current replacement string.(Overrides EncoderFallbackBuffer.Fallback(Char, Int32).)


Serves as the default hash function. (Inherited from Object.)


Retrieves the next character in the replacement fallback buffer.(Overrides EncoderFallbackBuffer.GetNextChar().)


Gets the Type of the current instance.(Inherited from Object.)


Causes the next call to the GetNextChar method to access the character position in the replacement fallback buffer prior to the current character position. (Overrides EncoderFallbackBuffer.MovePrevious().)


Initializes all internal state information and data in this instance of EncoderReplacementFallbackBuffer.(Overrides EncoderFallbackBuffer.Reset().)


Returns a string that represents the current object.(Inherited from Object.)

It might not be possible to convert a character to an equivalent encoded byte sequence if no suitable encoding exists. A common reason for an encoding to fail is if the conversion operation uses a code page that cannot represent the character to encode.

If the input character cannot be converted to an output byte sequence, a System.Text.EncoderReplacementFallback object provides a replacement string that is substituted for the original input character. The replacement string initializes the value of the EncoderReplacementFallback object, and the value of the EncoderReplacementFallback object initializes the value of an EncoderReplacementFallbackBuffer object. The value of an EncoderReplacementFallbackBuffer object is called the replacement fallback buffer. The conversion operation encodes the replacement fallback buffer instead of the original input character, then continues to process the remainder of the input.

.NET Framework
Available since 2.0

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Return to top