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Convert.ToInt64 Method (Object, IFormatProvider)

Microsoft Silverlight will reach end of support after October 2021. Learn more.

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)

Syntax

'Declaration
Public Shared Function ToInt64 ( _
    value As Object, _
    provider As IFormatProvider _
) As Long

public static long ToInt64(
    Object value,
    IFormatProvider provider
)

Parameters

Return Value

Type: System.Int64
A 64-bit signed integer equivalent to the value of value, or zero if value is nulla null reference (Nothing in Visual Basic).

Exceptions

Exception Condition
InvalidCastException

value does not implement IConvertible.

Remarks

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.

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

XNA Framework

Supported in: Xbox 360, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.