YamlErrorCodes

A character that cannot start or continue any YAML token, including control characters.

A token that the grammar does not allow at this point.

Indentation that does not match the enclosing block structure, including tabs used as indentation.

An implicit key that spans lines, exceeds 1024 characters, or is missing its : indicator.

A : value indicator where a mapping value cannot start.

A quoted scalar without its closing quote.

An unknown or malformed escape sequence in a double-quoted scalar.

A malformed block scalar header or block scalar indentation.

A malformed, duplicated or misplaced %YAML or %TAG directive, or an unsupported major version.

A malformed tag, or a tag handle no %TAG directive declares.

A malformed anchor or alias name, or properties attached to an alias.

A document marker, directive or content where the stream structure does not allow it.

Bytes that are not valid in the detected Unicode encoding.

An alias (*name) that no preceding anchor in the same document defines.

A mapping with two equal keys. YamlDocument throws it under YamlDuplicateKeyPolicy.Error, the default of strict loads, and reports it as a warning diagnostic under the other policies. YamlSerializer throws it only when YamlReaderOptions.Strict is set; otherwise the last key wins.

An alias inside the collection its anchor names (&a [*a]), which would make the document infinite.

A limit from YamlReaderOptions or YamlLoadOptions was exceeded; see YamlLimitExceededException.

YamlSerializer found a node that cannot become the requested .NET type: a mapping where a list is expected, text that is not a number, a null for a non-nullable value type, or a value out of range.

A mapping read by YamlSerializer lacks a key for a required member or constructor parameter.

A polymorphic value has no discriminator its type accepts, or one that no derived type registers.

YamlSerializer reached an object that contains itself while YamlSerializerOptions.ReferenceHandling is YamlReferenceHandling.None.