Convert::ToDouble Method (String^)

 

Converts the specified string representation of a number to an equivalent double-precision floating-point number.

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

public:
static double ToDouble(
	String^ value
)

Parameters

value
Type: System::String^

A string that contains the number to convert.

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 null.

Exception Condition
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.

Using the ToDouble(String^) method is equivalent to passing value to the Double::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 Double::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 Double. The example's output is from a system whose current culture is en-US.

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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