Data in data tab and preview tab is not matching?

In my report I m able to see all my data when runnin开发者_Python百科g query in data tab...but in preview i see a blank page...I have four parameters in my query..

I tried deleting .data files also...no luck.. any suggestions are at great help??

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Apologies in advance if this is a dumb suggestion - have you tried clicking on the View Report button in the Preview tab?

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Do you have a table on your report that is bound to your dataset?

Go to the properties for the table (right-click square in upper left corner of table and choose Properties) and make sure the Visibility is set to "Visible."