Variant Struct

Defines a variant type.

Implements

IEquatable<Variant>

IComparable<Variant>

IComparable

IFormattable

Namespace: GrapeCity.Enterprise.Data.Expressions.Evaluation

Assembly: MESCIUS.ActiveReports.Core.Data.ExpressionInfo.dll

Syntax

public struct Variant : IEquatable<Variant>, IComparable<Variant>, IComparable, IFormattable

Remarks

The size of structure is 24b.

Constructors

Name	Description
Variant(bool)	Initializes a new instance of the Variant with the specified boolean value.
Variant(char)	Initializes a new instance of the Variant with the specified char value.
Variant(DateTime)	Initializes a new instance of the Variant with the DateTime value.
Variant(decimal)	Initializes a new instance of the Variant with the specified decimal value.
Variant(double)	Initializes a new instance of the Variant with the specified double value.
Variant(int)	Initializes a new instance of the Variant with the specified integer value.
Variant(long)	Initializes a new instance of the Variant with the specified long integer value.
Variant(float)	Initializes a new instance of the Variant with the specified float value.
Variant(string)	Initializes a new instance of the Variant with the string value.
Variant(TimeSpan)	Initializes a new instance of the Variant with the TimeSpan value.
Variant(ulong)	Initializes a new instance of the Variant with the specified unsigned long integer value.

Fields

Name	Description
Comparer	A Variant.VariantComparer instance.
False	Predefined boolean 'False'.
Null	Predefined 'Null' value.
True	Predefined boolean 'True'.
Zero	Predefined 'Zero' value.

Properties

Name	Description
ErrorValue	Gets the VariantError if this variant is an Error type.
IsError	Checks if the variant value is an error.
IsNull	Checks if the variant value is null.
IsNullOrEmptyString	Checks if the variant value is null or empty string.
Type	The type of value represented with the Variant.

Methods

Name	Description
And(Variant, Variant)	Applies boolean '&&' to booleans and bitwise '&' to numeric.
Array(object)	Initializes a new instance of the Variant with Array type.
CompareTo(Variant)	Compares the Variant with the specified one.
CompareTo(object)	Compares the Variant with the specified object.
ConvertTo(VariantType)	Converts the variant to the specified type.
CreateError(string, ErrorCode, string)	Creates a new Error Variant with the specified message and error code.
DateToString(Variant, CultureInfo)	Converts date to string.
Equals(Variant)	Checks whether the Variant equals to the specified one.
Equals(object)	Checks whether the Variant equals to the specified object.
FromObject(object)	Initializes a new instance of the Variant from the value specified as object. The type of variant will be inferred from the specified value.
GetHashCode()	Gets hash code for the variant.
Or(Variant, Variant)	Applies boolean '\|\|' to booleans and bitwise '\|' to numeric.
Pow(Variant, Variant)	Returns a specified Variant raised to the specified power.
ToDateTimeVariant()	Tries to convert Variant value to DateTime.
ToDoubleVariant()	Tries to convert Variant containing value to double.
ToIntVariant()	Tries to convert Variant containing value to GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.Int64.
ToObject()	Converts the Variant to the object.
ToString()	Converts Variant to the string representation.
ToString(IFormatProvider)	Converts Variant to the string representation with given format provider.
ToString(string, IFormatProvider)	Converts Variant to the string representation with specified format and format provider.
TryCompareTo(Variant, out int)	Compares the Variant with the specified Variant.
TryEquals(Variant, out bool)	Checks whether the Variant equals to the specified one.
Xor(Variant, Variant)	Applies boolean '!=' to booleans and bitwise '^' to numeric.

Operators

Name	Description
operator +(Variant, Variant)	Sums two variants.
operator +(Variant, long)	Sums the Variant and long value.
operator /(Variant, Variant)	Divides one variant by another.
operator /(Variant, double)	Divides Variant by double.
operator ==(Variant, Variant)	Checks whether two given Variants are equal.
explicit operator bool(Variant)	Converts given Variant to boolean.
explicit operator DateTime(Variant)	Converts Variant value to DateTime.
explicit operator decimal(Variant)	Converts Variant value to decimal.
explicit operator double(Variant)	Converts Variant value to double.
explicit operator int(Variant)	Converts Variant value to int.
explicit operator long(Variant)	Converts Variant value to long.
explicit operator float(Variant)	Converts Variant value to float.
explicit operator string(Variant)	Converts Variant value to string.
explicit operator TimeSpan(Variant)	Converts Variant value to GrapeCity.Enterprise.Data.Expressions.Evaluation.Variant.TimeSpan.
explicit operator ulong(Variant)	Converts Variant value to ulong.
operator >(Variant, Variant)	Checks whether the one variant is greater than another.
operator >=(Variant, Variant)	Checks whether the one variant is greater or equal to another.
operator !=(Variant, Variant)	Checks whether two given Variants are different.
operator <<(Variant, int)	Bitwise shift to the left.
operator <(Variant, Variant)	Checks whether the one variant is less than another.
operator <=(Variant, Variant)	Checks whether the one variant is less or equal to another.
operator !(Variant)	Performs a logical negation on a Variant value if it is of boolean type, or a bitwise negation if it is of a numeric type.
operator %(Variant, Variant)	Computes the remainder after dividing its first operand by its second.
operator *(Variant, Variant)	Multiplies two variants.
operator >>(Variant, int)	Bitwise shift to the right.
operator -(Variant, Variant)	Subtracts one Variant from another.
operator -(Variant)	Negates the given numerical variant.
operator +(Variant)	Tries to convert string variant to numeric, raises expceptions for other non-numeric types, does nothing for all numeric types.

Extension Methods

VariantUncheckedExtensions.GetDecimalUnchecked(Variant)

VariantUncheckedExtensions.GetDoubleUnchecked(Variant)

VariantUncheckedExtensions.GetEnumValueUnchecked(Variant)

VariantUncheckedExtensions.GetFloatUnchecked(Variant)

VariantUncheckedExtensions.GetInt32Unchecked(Variant)

VariantUncheckedExtensions.GetInt64Unchecked(Variant)

VariantUncheckedExtensions.GetStringUnchecked(Variant)

VariantUncheckedExtensions.GetUInt64Unchecked(Variant)

EnumerableExtensions.Flatten<T>(T, Func<T, T>)

EnumerableExtensions.Flatten<T>(T, Func<T, IEnumerable<T>>)

EnumerableExtensions.Repeat<T>(T, int)

EnumerableExtensions.WithIndex<T>(T, int)