Convert.ToInt64 Method (String)

 

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

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

static member ToInt64 : 
        value:string -> int64

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 null.

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.

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.

The following example attempts to convert each element in an array of numeric strings to a long integer.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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