Decimal Explicit Conversion (Decimal to Int64)
[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]
Converts a Decimal to a 64-bit signed integer.
Assembly: mscorlib (in mscorlib.dll)
Parameters
- value
- Type: System.Decimal
A Decimal to convert.
| Exception | Condition |
|---|---|
| OverflowException | value is less than Int64.MinValue or greater than Int64.MaxValue. |
This operator supports the explicit conversion of a Decimal to a Int64. The syntax for such explicit conversions is language-dependent, and individual language compilers can provide different implementations and return different results. The example illustrates the different return values when you explicitly convert a Decimal value to an Int64 value by using C# and Visual Basic. To perform a conversion that is independent of language, you can call the ToInt64 or the Convert.ToInt64(Decimal) method.
The following code example converts Decimal numbers to Int64 values using the explicit Decimal to Int64 conversion.
// Example of the explicit conversions from decimal to long and // decimal to ulong. using System; class Example { const string formatter = "{0,25}{1,22}{2,22}"; // Get the exception type name; remove the namespace prefix. public static string GetExceptionType(Exception ex) { string exceptionType = ex.GetType().ToString(); return exceptionType.Substring( exceptionType.LastIndexOf('.') + 1); } // Convert the decimal argument; catch exceptions that are thrown. public static void DecimalToU_Int64(System.Windows.Controls.TextBlock outputBlock, decimal argument) { object Int64Value; object UInt64Value; // Convert the argument to a long value. try { Int64Value = (long)argument; } catch (Exception ex) { Int64Value = GetExceptionType(ex); } // Convert the argument to a ulong value. try { UInt64Value = (ulong)argument; } catch (Exception ex) { UInt64Value = GetExceptionType(ex); } outputBlock.Text += String.Format(formatter, argument, Int64Value, UInt64Value) + "\n"; } public static void Demo(System.Windows.Controls.TextBlock outputBlock) { outputBlock.Text += String.Format( "This example of the explicit conversions from decimal " + "to long \nand decimal to ulong generates the following " + "output. It displays \nseveral converted decimal " + "values.\n") + "\n"; outputBlock.Text += String.Format(formatter, "decimal argument", "long/exception", "ulong/exception") + "\n"; outputBlock.Text += String.Format(formatter, "----------------", "--------------", "---------------") + "\n"; // Convert decimal values and display the results. DecimalToU_Int64(outputBlock, 123M); DecimalToU_Int64(outputBlock, new decimal(123000, 0, 0, false, 3)); DecimalToU_Int64(outputBlock, 123.999M); DecimalToU_Int64(outputBlock, 18446744073709551615.999M); DecimalToU_Int64(outputBlock, 18446744073709551616M); DecimalToU_Int64(outputBlock, 9223372036854775807.999M); DecimalToU_Int64(outputBlock, 9223372036854775808M); DecimalToU_Int64(outputBlock, -0.999M); DecimalToU_Int64(outputBlock, -1M); DecimalToU_Int64(outputBlock, -9223372036854775808.999M); DecimalToU_Int64(outputBlock, -9223372036854775809M); } } /* This example of the explicit conversions from decimal to long and decimal to ulong generates the following output. It displays several converted decimal values. decimal argument long/exception ulong/exception ---------------- -------------- --------------- 123 123 123 123.000 123 123 123.999 123 123 18446744073709551615.999 OverflowException 18446744073709551615 18446744073709551616 OverflowException OverflowException 9223372036854775807.999 9223372036854775807 9223372036854775807 9223372036854775808 OverflowException 9223372036854775808 -0.999 0 0 -1 -1 OverflowException -9223372036854775808.999 -9223372036854775808 OverflowException -9223372036854775809 OverflowException OverflowException */