crystal reports check null and concatenate string

Hi

I have a crystal report, (c# 2010) connecting to an access database

The report is displaying a clients address, which I ham trying to show in an unbound field

I have code like this,

{command.title} & " " & {command.fname} & " " & {command.sname} & chrW(13) 
& {command.address1} & chrW(13)
& {command.address2} & chrW(13)
& {command.address3} & chrW(13)
& {command.postcode} & chrW(13)

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this works fine until I get a null value

how do I check for a null value and concatenate the fields as above?
cycledudeAsked:
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cycledudeConnect With a Mentor Author Commented:
Hope this helps someone

stringVar address := "";

if not(isNull({Command.title}))then
    address := {Command.title};

if not(isNull({Command.fname}))then
    address := address & " " & {Command.fname};

if not(isNull({Command.sname}))then
    address := address & " " & {Command.sname};

address := address & chrW(13);

if not(isNull({Command.tblAppointments.address1}))then
    address := address & {Command.tblAppointments.address1} & chrW(13);

if not(isNull({Command.tblAppointments.address2}))then
    address := address &  {Command.tblAppointments.address2} & chrW(13);

if not(isNull({Command.tblAppointments.address3}))then
    address := address &  {Command.tblAppointments.address3} & chrW(13);

if not(isNull({Command.tblAppointments.postcode})) then
    address := address &  {Command.tblAppointments.postcode} & chrW(13);

address;

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0
 
cycledudeAuthor Commented:
easy
0
 
mlmccCommented:
There are 3 ways to handle this.

1.  There is an option to convert NULL to default for the entire report.  You can do this if NULL is not meaningful in the report.  In the fill version it is in the FILE --> REPORT OPTIONS

2.  In the formula editor there may be an option to USE DEFAULT FOR NULL rather than EXCEPTION FOR NULL

3.  Change the formula to

Local StringVar strOut;
If Not IsNull({command.title}) then
    strOut := {command.title};

If Not IsNull({command.fname}) then
    strOut := strOut  + " " + {command.fname};

If Not IsNull({command.sname}) then
    strOut := strOut  + " " + {command.sname};

If Not IsNull({command.address1}) then
    strOut := strOut  + chr(13) + {command.address1};

If Not IsNull({command.address2}) then
    strOut := strOut  + chr(13) + {command.address2};

If Not IsNull({command.address3}) then
    strOut := strOut  + chr(13) + {command.address3};

If Not IsNull({command.postcode}) then
    strOut := strOut  + chr(13) + {command.postcode};

Trim(strOut)

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mlmcc
0
 
cycledudeAuthor Commented:
thanks for the additional info mlmcc ;o) i would award you the points if I could
0
 
mlmccCommented:
There is but no problem

mlmcc
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