I have two text boxes to sum in detail section of vb data report and I want to sum in 3rd text box like this in detail section :

rpttext1 = rpttext2 + rpttext3

depositing numbers into a textbox and subtracting - MSDN Forums (http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2656659&SiteID=1)

Major Help Needed! (http://p102.ezboard.com/Major-Help-Needed/fvisualbasicexplorergeneralvisualbasic.showMessage ?topicID=18548.topic)

Here are a couple of MATH in a TextBox solutions, HTH.