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Page.IsValid cannot be called before validation has taken place

Posted By:      Posted Date: September 12, 2010    Points: 0   Category :ASP.Net
This is my first asp.net application and it looks like I am in a rock and a hard place.  I have a multi page formview and I want to allow the user to page back with causing validation, but if I don't cause validation on the page back button, I get an error  Page.IsValid cannot be called before validation has taken place. It should be queried in the event handler for a control that has CausesValidation=True and initiated the postback, or after a call to Page.Validate.Source Error:  Line 41: Line 42:     Protected Sub FormView1_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.FormViewPageEventArgs) Handles FormView1.PageIndexChangingLine 43:         FormView1.UpdateItem(True)Line 44:         If FormView1.PageIndex < 1 ThenLine 45:             FormView1.FindControl("ImpactsTextBox").Focus() Line 43 in the vb file allows me to update an item.   How do I get around this problem?  Is this where I need a "if not postback"?  Any examples would be appreciated.  

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