Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All

Convert.ToDouble Method (String, IFormatProvider)

Converts the specified string representation of a number to an equivalent double-precision floating-point number, using the specified culture-specific formatting information.

Namespace:  System
Assemblies:   System.Runtime.Extensions (in System.Runtime.Extensions.dll)
  mscorlib (in mscorlib.dll)

static member ToDouble : 
        value:string * 
        provider:IFormatProvider -> float

Parameters

value
Type: System.String

A string that contains the number to convert.

provider
Type: System.IFormatProvider

An object that supplies culture-specific formatting information.

Return Value

Type: System.Double
A double-precision floating-point number that is equivalent to the number in value, or 0 (zero) if value is a null reference (Nothing in Visual Basic).

ExceptionCondition
FormatException

value is not a number in a valid format.

OverflowException

value represents a number that is less than Double.MinValue or greater than Double.MaxValue.

The return value is the result of invoking the Double.Parse method on value.

provider is an IFormatProvider instance that obtains a NumberFormatInfo object. The NumberFormatInfo object provides culture-specific information about the format of value. If provider is a null reference (Nothing in Visual Basic), the NumberFormatInfo for the current culture is used.

If you prefer not to handle an exception if the conversion fails, you can call the Double.TryParse method instead. It returns a Boolean value that indicates whether the conversion succeeded or failed.

The following example converts string representations of Double values with the ToDouble method, using an IFormatProvider object.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

Portable Class Library

Supported in: Portable Class Library

Supported in: Windows Phone 8.1

Supported in: Windows Phone Silverlight 8.1

Supported in: Windows Phone Silverlight 8
Show:
© 2015 Microsoft