共用方式為

CDbl Function

  • 發行項

Returns an expression that has been converted to a Variant of subtype Double.

                      CDbl(expression)

Remarks

The expression argument is any valid expression.

Use the CDbl function to provide conversions from any data type to a Double subtype. For example, CDbl forces double-precision arithmetic when currency or integer arithmetic would normally occur.

The CDbl function uses the locale setting of your system to determine how to perform conversions. Different decimal separators are properly recognized depending on the locale setting, as are different thousand separators.

This example uses the CDbl function to convert an expression to a Double.

Dim MyCurr, MyDouble
MyCurr = CCur(234.456784)              ' MyCurr is a Currency (234.4568).
MyDouble = CDbl(MyCurr * 8.2 * 0.01)   ' Convert result to a Double (19.2254576).

Requirements

Version 1

See Also

Reference

CBool Function

CByte Function

CCur Function

CDate Function

CInt Function

CLng Function

CSng Function

CStr Function

Change History

Date

History

Reason

August 2009

Modified remarks.

Customer feedback.