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Convert.ToInt64 Method (String, Int32)

.NET Framework 1.1

Converts the String representation of a number in a specified base to an equivalent 64-bit signed integer.

[Visual Basic]
Overloads Public Shared Function ToInt64( _
   ByVal value As String, _
   ByVal fromBase As Integer _
) As Long
[C#]
public static long ToInt64(
 string value,
 int fromBase
);
[C++]
public: static __int64 ToInt64(
 String* value,
 int fromBase
);
[JScript]
public static function ToInt64(
   value : String,
 fromBase : int
) : long;

Parameters

value
A String containing a number.
fromBase
The base of the number in value, which must be 2, 8, 10, or 16.

Return Value

A 64-bit signed integer equivalent to the number in value.

-or-

Zero if value is a null reference (Nothing in Visual Basic).

Exceptions

Exception Type Condition
ArgumentException fromBase is not 2, 8, 10, or 16.

Remarks

If fromBase is 16, you can prefix the number specified by the value parameter with "0x" or "0X".

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, .NET Compact Framework

See Also

Convert Class | Convert Members | System Namespace | Convert.ToInt64 Overload List

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