Mandatory Prompt not working in crystal report

Question

Hi,
I do know that there is a option to make the prompt mandatory in the prompt selection window by making "Optional Prompt:False" in crystal 2011.If this is the case then report should not run when values are not entered and OK button is clicked in the prompt screen.But sill the reports runs but gives no data.
The report should not run when prompt is not entered.Is there a way to achieve this?

Answer 1

Hi Sahana,
If the mandatory prompt is a string paramater it will run without entering a value.
You have to use the Edit Mask option.
In your case you can use A as an Edit Mask character.
1. On the View menu, click Field Explorer.
2. Select Parameter Fields
An edit mask can be any of a set of masking characters used to restrict the values you can enter
as parameter values (the edit mask also limits the values you can enter as default prompting values).
You can enter any of the following masking characters, or any combination of them:
• "A" (allows an alphanumeric character and requires the entry of a character in the parameter
value).
• "a" (allows an alphanumeric character and does not require the entry of a character in the
parameter value).
• "0" (allows a digit [0 to 9] and requires the entry of a character in the parameter value).
• "9" (allows a digit or a space, and does not require the entry of a character in the parameter
value).
• "#" (allows a digit, space, or plus/minus sign, and does not require the entry of a character in the
parameter value).
• "L" (allows a letter [A to Z], and requires the entry of a character in the parameter value).
• "?" (allows a letter, and does not require the entry of a character in the parameter value).
484 2012-03-14
Parameter Fields and Prompts
• "&" (allows any character or space, and requires the entry of a character in the parameter value).
• "C" (allows any character or space, and does not require the entry of a character in the parameter
value).
- Nrupal