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Convert a 'string' to full Date and Time

Posted on 2013-11-28
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Last Modified: 2013-11-28
I am working with Crystal reports 2011 and have a string, which is in the following format - '11/26/2013 7:15:11AM' which I want to convert to a DateTime holding the same format including the (AM/PM)
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Question by:John-S Pretorius
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6 Comments
 
LVL 18

Accepted Solution

by:
vasto earned 1000 total points
ID: 39683865
DateTimeValue({Table.Field})

if this doesn't work try to parse it like this:

DateTime({Table.Field})[7 to 10], {Table.Field})[1 to 2], {Table.Field})[4 to 5] ..... hour ... minute ... sec)
the second approach might be trivy because you may have 1 or 2 characters for month, day and hour . It might be better if you parse by "/" and ":" and combine the values using DateTime
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Author Comment

by:John-S Pretorius
ID: 39683894
This looks good - can I ask if there is a way 'trap' (If statement) that would avoid 'Bad date-time format string' as the current string I'm trying to convert also has some values that cannot be converted to date and time.
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Author Comment

by:John-S Pretorius
ID: 39683910
I found the statement that works : if isdate({table.field}) then DateTimeValue({Table.Field})

Thank you for your help.
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Author Comment

by:John-S Pretorius
ID: 39683911
I've requested that this question be closed as follows:

Accepted answer: 0 points for johnsp1234's comment #a39683894

for the following reason:

I found the statement that works : if isdate({table.field}) then DateTimeValue({Table.Field})

Thank you for your help.
0
 

Author Closing Comment

by:John-S Pretorius
ID: 39683912
I found the statement that works : if isdate({table.field}) then DateTimeValue({Table.Field})

Thank you for your help.
0
 
LVL 101

Expert Comment

by:mlmcc
ID: 39683914
You can do 2 checks

First for NULL - no value then for IsDateTime

If IsNull({DateString}) then
    Date(1900,1,1)
Else If IsDateTime({DateString}) then
    cDateTime({DateString})
Else
    Date(1900,1,1)


If it doesn't like your date format then you will have to use the second version with a minor adjustment.  The values passed must be numbers not a number string

DateTime(Val({Table.Field})[7 to 10]), Val({Table.Field})[1 to 2]), Val({Table.Field})[4 to 5]) ..... hour ... minute ... sec)


mlmcc
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