When I click the preview button my report auto loads, but I have a string parameter I would like to fill in. My query is such that an empty string will load an unfiltered list, which can take some time. I really need it to wait for me to enter my parameter and click preview before it tries to load the report. Is there any way to do this? and why does this happen anyways, shouldn't it just wait for my parameter like SSRS does?
P.S. If I choose to not allow blank strings for that parameter, the preview then fails, but won't let me reload the report after I put in a valid parameter... seems like a bug.
P.S. If I choose to not allow blank strings for that parameter, the preview then fails, but won't let me reload the report after I put in a valid parameter... seems like a bug.