Report Viewer not Displaying the newly inserted data

Hi, am a beginner in C#. I Made a Payslip Application in C#, Which uses access Db 2010 as database and also provided a report viewer in another form in order to get it as a printout. The problem am facing is, Newly Entered data is not getting displayed on the Report Viewer but shows the old data even after refresh. I tried to copy the original db from its source to project folder, it was replaced by the already existing db. Then the report was displaying the updated report. But this is not possible to do all the time i update the data. Please some 1 help me.....