| BsonUndefined Properties | 
The BsonUndefined type exposes the following members.
| Name | Description | |
|---|---|---|
| AsBoolean | 
            Casts the BsonValue to a Boolean (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonArray | 
            Casts the BsonValue to a BsonArray (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonBinaryData | 
            Casts the BsonValue to a BsonBinaryData (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonDateTime | 
            Casts the BsonValue to a BsonDateTime (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonDocument | 
            Casts the BsonValue to a BsonDocument (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonJavaScript | 
            Casts the BsonValue to a BsonJavaScript (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonJavaScriptWithScope | 
            Casts the BsonValue to a BsonJavaScriptWithScope (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonMaxKey | 
            Casts the BsonValue to a BsonMaxKey (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonMinKey | 
            Casts the BsonValue to a BsonMinKey (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonNull | 
            Casts the BsonValue to a BsonNull (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonRegularExpression | 
            Casts the BsonValue to a BsonRegularExpression (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonSymbol | 
            Casts the BsonValue to a BsonSymbol (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonTimestamp | 
            Casts the BsonValue to a BsonTimestamp (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonUndefined | 
            Casts the BsonValue to a BsonUndefined (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsBsonValue | 
            Casts the BsonValue to a BsonValue (a way of upcasting subclasses of BsonValue to BsonValue at compile time).
              (Inherited from BsonValue.) | |
| AsByteArray | 
            Casts the BsonValue to a Byte[] (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsDateTime |  Obsolete.  
            Casts the BsonValue to a DateTime in UTC (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsDouble | 
            Casts the BsonValue to a Double (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsGuid | 
            Casts the BsonValue to a Guid (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsInt32 | 
            Casts the BsonValue to an Int32 (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsInt64 | 
            Casts the BsonValue to a Int64 (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsLocalTime |  Obsolete.  
            Casts the BsonValue to a DateTime in the local timezone (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableBoolean | 
            Casts the BsonValue to a Nullable{Boolean} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableDateTime |  Obsolete.  
            Casts the BsonValue to a Nullable{DateTime} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableDouble | 
            Casts the BsonValue to a Nullable{Double} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableGuid | 
            Casts the BsonValue to a Nullable{Guid} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableInt32 | 
            Casts the BsonValue to a Nullable{Int32} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableInt64 | 
            Casts the BsonValue to a Nullable{Int64} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsNullableObjectId | 
            Casts the BsonValue to a Nullable{ObjectId} (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsObjectId | 
            Casts the BsonValue to an ObjectId (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsRegex | 
            Casts the BsonValue to a Regex (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsString | 
            Casts the BsonValue to a String (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| AsUniversalTime |  Obsolete.  
            Casts the BsonValue to a DateTime in UTC (throws an InvalidCastException if the cast is not valid).
              (Inherited from BsonValue.) | |
| BsonType | 
            Gets the BsonType of this BsonValue.
              (Overrides BsonValueBsonType.) | |
| IsBoolean | 
            Tests whether this BsonValue is a Boolean.
              (Inherited from BsonValue.) | |
| IsBsonArray | 
            Tests whether this BsonValue is a BsonArray.
              (Inherited from BsonValue.) | |
| IsBsonBinaryData | 
            Tests whether this BsonValue is a BsonBinaryData.
              (Inherited from BsonValue.) | |
| IsBsonDateTime | 
            Tests whether this BsonValue is a BsonDateTime.
              (Inherited from BsonValue.) | |
| IsBsonDocument | 
            Tests whether this BsonValue is a BsonDocument.
              (Inherited from BsonValue.) | |
| IsBsonJavaScript | 
            Tests whether this BsonValue is a BsonJavaScript.
              (Inherited from BsonValue.) | |
| IsBsonJavaScriptWithScope | 
            Tests whether this BsonValue is a BsonJavaScriptWithScope.
              (Inherited from BsonValue.) | |
| IsBsonMaxKey | 
            Tests whether this BsonValue is a BsonMaxKey.
              (Inherited from BsonValue.) | |
| IsBsonMinKey | 
            Tests whether this BsonValue is a BsonMinKey.
              (Inherited from BsonValue.) | |
| IsBsonNull | 
            Tests whether this BsonValue is a BsonNull.
              (Inherited from BsonValue.) | |
| IsBsonRegularExpression | 
            Tests whether this BsonValue is a BsonRegularExpression.
              (Inherited from BsonValue.) | |
| IsBsonSymbol | 
            Tests whether this BsonValue is a BsonSymbol .
              (Inherited from BsonValue.) | |
| IsBsonTimestamp | 
            Tests whether this BsonValue is a BsonTimestamp.
              (Inherited from BsonValue.) | |
| IsBsonUndefined | 
            Tests whether this BsonValue is a BsonUndefined.
              (Inherited from BsonValue.) | |
| IsDateTime |  Obsolete.  
            Tests whether this BsonValue is a DateTime.
              (Inherited from BsonValue.) | |
| IsDouble | 
            Tests whether this BsonValue is a Double.
              (Inherited from BsonValue.) | |
| IsGuid | 
            Tests whether this BsonValue is a Guid.
              (Inherited from BsonValue.) | |
| IsInt32 | 
            Tests whether this BsonValue is an Int32.
              (Inherited from BsonValue.) | |
| IsInt64 | 
            Tests whether this BsonValue is an Int64.
              (Inherited from BsonValue.) | |
| IsNumeric | 
            Tests whether this BsonValue is a numeric value.
              (Inherited from BsonValue.) | |
| IsObjectId | 
            Tests whether this BsonValue is an ObjectId .
              (Inherited from BsonValue.) | |
| IsString | 
            Tests whether this BsonValue is a String.
              (Inherited from BsonValue.) | |
| IsValidDateTime | 
            Tests whether this BsonValue is a valid DateTime.
              (Inherited from BsonValue.) | |
| ItemInt32 | 
            Gets or sets a value by position (only applies to BsonDocument and BsonArray).
              (Inherited from BsonValue.) | |
| ItemString | 
            Gets or sets a value by name (only applies to BsonDocument).
              (Inherited from BsonValue.) | |
| RawValue |  Obsolete.  
            Gets the raw value of this BsonValue (or null if this BsonValue doesn't have a single scalar value).
              (Inherited from BsonValue.) | |
| Value | 
            Gets the singleton instance of BsonUndefined.
              |