How to change crystal report data field at runtime ?

Question

Hello everyone,
I have a Crystal Report file ,which i am using to generate report for my windows form project .
In that report i have a filed called as Quantity which data type is set as decimal, the requirement is like that the number of value those comes after decimal point that should be set according to the value which is given by the user at the run time .
For eg: If user gives 1 at the run time then the report Qty field value set one value after decimal point. Like 12.1
if user gives 2 then Qty field the value is 12.22 like tat  but user can give from zero to any number.. and if it is zero it should not show decimal
Note: The main idea hear is how to change the filed in Crystal Report decimal point value by using code(or we say writing code we need to set manually as user input it will change)
Can any body help me how to solve this issue .
S.K Nayak

Answer 1

I think you could probably make the field you see a formula field and take a parameter as the number of decimal places.
totext converts a number to a string.
totext({decimalField}, 2)
That's 2 decimal places.
You could probably substitute a {parameter} for that 2.
If not then you could substitute an entire formula.
To explore formulas:
foreach (FormulaFieldDefinition f in rpt.DataDefinition.FormulaFields)
MessageBox.Show(f.Name);
// f.Text = your new formula
Where rpt is an instantiated report.
Or add another string field which you display in the column and do the calculation with the original decimal.
Hope that helps.
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