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Difference between revisions of "Microsoft KB Archive/171044"

From BetaArchive Wiki
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=== Examples ===
 
=== Examples ===
  
<pre class="codesample">  x = DateValue(&quot;12/30/1899&quot;)  ' returns 0 or zero
+
<pre class="codesample">  x = DateValue("12/30/1899")  ' returns 0 or zero
   x = DateValue(&quot;12/31/1899&quot;)  ' returns 1
+
   x = DateValue("12/31/1899")  ' returns 1
   x = DateValue(&quot;12/5/1992&quot;)  ' returns 33943
+
   x = DateValue("12/5/1992")  ' returns 33943
 
                 </pre>
 
                 </pre>
 
The Sgn() function is used to determine if the difference between two dates is a negative(date in the past) or positive(date in the future) number.
 
The Sgn() function is used to determine if the difference between two dates is a negative(date in the past) or positive(date in the future) number.
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       On Error GoTo errhandler
 
       On Error GoTo errhandler
 
       ' Prompt for a date.
 
       ' Prompt for a date.
       sDate = InputBox$(&quot;Enter a date in the mm/dd/yy format&quot;)
+
       sDate = InputBox$("Enter a date in the mm/dd/yy format")
 
       ' Get difference between dates.
 
       ' Get difference between dates.
 
       intNumDays = CInt(DateValue(sDate) - Now())
 
       intNumDays = CInt(DateValue(sDate) - Now())
 
       ' Determine if difference is past or future.
 
       ' Determine if difference is past or future.
 
       If Sgn(intNumDays) = 1 Then
 
       If Sgn(intNumDays) = 1 Then
         MsgBox &quot;Days between &quot; + sDate + &quot; and today :&quot; + CStr(intNumDays)
+
         MsgBox "Days between " + sDate + " and today :" + CStr(intNumDays)
 
       Else
 
       Else
         MsgBox &quot;The date &quot; + sDate + &quot; was&quot; + CStr(Abs(intNumDays)) _
+
         MsgBox "The date " + sDate + " was" + CStr(Abs(intNumDays)) _
         + &quot; day(s) ago.&quot;
+
         + " day(s) ago."
 
       End If
 
       End If
 
   errhandler:
 
   errhandler:
       If Err > 0 Then MsgBox &quot;Please enter a valid date.&quot;
+
       If Err > 0 Then MsgBox "Please enter a valid date."
 
   End Sub
 
   End Sub
 
                 </pre>
 
                 </pre>

Latest revision as of 10:05, 21 July 2020

Knowledge Base


Article ID: 171044

Article Last Modified on 7/13/2007



APPLIES TO

  • Microsoft Word 97 Standard Edition



This article was previously published under Q171044


SUMMARY

To determine the number of days between two dates, using Visual Basic for Applications you can convert dates to serial numbers and subtract one number from the other.

MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site:

For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site:

The following Visual Basic for Applications sample macro prompts for a date in the mm/dd/yy format, and returns the number of days between the current date and the specified date.

The DateValue() function converts a specified date, beginning with December 30, 1899, to a serial number.

Syntax: DateValue(DateText$)

Examples

   x = DateValue("12/30/1899")  ' returns 0 or zero
   x = DateValue("12/31/1899")  ' returns 1
   x = DateValue("12/5/1992")   ' returns 33943
                

The Sgn() function is used to determine if the difference between two dates is a negative(date in the past) or positive(date in the future) number.

   Sub DayDiff()
      Dim sDate As String
      Dim intNumDays As Integer
      On Error GoTo errhandler
      ' Prompt for a date.
      sDate = InputBox$("Enter a date in the mm/dd/yy format")
      ' Get difference between dates.
      intNumDays = CInt(DateValue(sDate) - Now())
      ' Determine if difference is past or future.
      If Sgn(intNumDays) = 1 Then
         MsgBox "Days between " + sDate + " and today :" + CStr(intNumDays)
      Else
         MsgBox "The date " + sDate + " was" + CStr(Abs(intNumDays)) _
         + " day(s) ago."
      End If
   errhandler:
      If Err > 0 Then MsgBox "Please enter a valid date."
   End Sub
                

For additional information, please see the following article in the Microsoft Knowledge Base:

173707 OFF97: How to Run Sample Code from Knowledge Base Articles


REFERENCES

For more information about getting help with Visual Basic for Applications, please see the following article in the Microsoft Knowledge Base:

163435 VBA: Programming Resources for Visual Basic for Applications



Additional query words: vb vba vbe calculate difference

Keywords: kbdtacode kbhowto kbmacroexample KB171044