Convert.ToInt64 Method (Object, IFormatProvider)

July 28, 2014

Converts the value of the specified Object to a 64-bit signed integer using the specified culture-specific formatting information.

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

public static long ToInt64(
	Object value,
	IFormatProvider provider
)

Parameters

value
Type: System.Object
An Object that implements the IConvertible interface.
provider
Type: System.IFormatProvider
An IFormatProvider interface implementation that supplies culture-specific formatting information.

Return Value

Type: System.Int64
A 64-bit signed integer equivalent to the value of value, or zero if value is null.

ExceptionCondition
InvalidCastException

value does not implement IConvertible.

The return value is the result of invoking the IConvertible.ToInt64 method of the underlying type of value.

provider enables the user to specify culture-specific conversion information about the contents of value. For example, if value is a String that represents a number, provider could supply culture-specific information about the notation used to represent that number.

The base types ignore provider; however, it is honored if value is a user-defined type that implements the IConvertible interface.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

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