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Convert.ToDecimal Method (Double)

Converts the value of the specified double-precision floating point number to an equivalent Decimal number.

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

public static decimal ToDecimal (
	double value
)
public static Decimal ToDecimal (
	double value
)
public static function ToDecimal (
	value : double
) : decimal

Parameters

value

A double-precision floating point number.

Return Value

A Decimal number equivalent to the value of value. The Decimal contains 15 significant digits and is rounded using rounding to nearest. For example, when rounded to two decimals, the value 2.345 becomes 2.34 and the value 2.355 becomes 2.36.

Exception typeCondition

OverflowException

The numeric value of value is greater than MaxValue or less than MinValue.

The following code sample illustrates the conversion of a Double value to a Decimal one, using ToDecimal.

public void ConvertDoubleDecimal(double doubleVal){
    
    decimal decimalVal;
    
    // Conversion from double to decimal cannot overflow.
    decimalVal = System.Convert.ToDecimal(doubleVal);
    System.Console.WriteLine ("{0} as a decimal is: {1}",
        doubleVal, decimalVal);
    
    // Decimal to double conversion can overflow.
    try {
        doubleVal = System.Convert.ToDouble(decimalVal);
        System.Console.WriteLine("{0} as a double is: {1}",
            decimalVal, doubleVal);
    } 
    catch (System.OverflowException) {
        System.Console.WriteLine(
            "Overflow in decimal-to-double conversion.");
    }

}

public void ConvertDoubleDecimal(double doubleVal)
{
    System.Decimal decimalVal;

    // Conversion from double to decimal cannot overflow.
    decimalVal = System.Convert.ToDecimal(doubleVal);
    System.Console.WriteLine("{0} as a decimal is: {1}", 
        System.Convert.ToString(doubleVal), 
        System.Convert.ToString(decimalVal));

    // Decimal to double conversion can overflow.
    try {        
        doubleVal = System.Convert.ToDouble(decimalVal);
        System.Console.WriteLine("{0} as a double is: {1}", 
            System.Convert.ToString(decimalVal), 
            System.Convert.ToString(doubleVal));
    }
    catch (System.OverflowException exp) {        
      System.Console.WriteLine("Overflow in decimal-to-double conversion.");
    }
} //ConvertDoubleDecimal

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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