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TryParse Method

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Converts the string representation of a number to its double-precision floating-point number equivalent. A return value indicates whether the conversion succeeded or failed.

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

Syntax

'Declaration
Public Shared Function TryParse ( _
    s As String, _
    <OutAttribute> ByRef result As Double _
) As Boolean

public static bool TryParse(
    string s,
    out double result
)

public:
static bool TryParse(
    String^ s, 
    [OutAttribute] double% result
)

static member TryParse : 
        s:string * 
        result:float byref -> bool 

public static function TryParse(
    s : String, 
    result : double
) : boolean

Parameters

  • result
    Type: System. . :: . .Double%
    When this method returns, contains the double-precision floating-point number equivalent to the s parameter, if the conversion succeeded, or zero if the conversion failed. The conversion fails if the s parameter is nullNothingnullptrunita null reference (Nothing in Visual Basic), is not a number in a valid format, or represents a number less than MinValue or greater than MaxValue. This parameter is passed uninitialized.

Return Value

Type: System. . :: . .Boolean
true if s was converted successfully; otherwise, false.

Remarks

This overload differs from the Double..::..Parse(String) method by returning a Boolean value that indicates whether the parse operation succeeded instead of returning the parsed numeric value. It eliminates the need to use exception handling to test for a FormatException in the event that s is invalid and cannot be successfully parsed.

.NET Framework Security

See Also

Reference

Double Structure

System Namespace