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[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Converts the specified string representation of a number to an equivalent 64-bit signed integer.
Namespace: System
Assembly: mscorlib (in mscorlib.dll)
Syntax
'Declaration
Public Shared Function ToInt64 ( _
value As String _
) As Long
public static long ToInt64(
string value
)
public:
static long long ToInt64(
String^ value
)
static member ToInt64 :
value:string -> int64
public static function ToInt64(
value : String
) : long
Parameters
- value
Type: System. . :: . .String
A string that contains a number to convert.
Return Value
Type: System. . :: . .Int64
A 64-bit signed integer that is equivalent to the number in value, or 0 (zero) if value is nullNothingnullptrunita null reference (Nothing in Visual Basic).
Exceptions
| Exception | Condition |
|---|---|
| FormatException | value does not consist of an optional sign followed by a sequence of digits (0 through 9). |
| OverflowException | value represents a number that is less than Int64..::..MinValue or greater than Int64..::..MaxValue. |
Remarks
Using the ToInt64(String) method is equivalent to passing value to the Int64..::..Parse(String) method. value is interpreted by using the formatting conventions of the current thread culture.
If you prefer not to handle an exception if the conversion fails, you can call the Int64.TryParse method instead. It returns a Boolean value that indicates whether the conversion succeeded or failed.
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see dd66cd4c-b087-415f-9c3e-94e3a1835f74.