vb.net - How do I use the Tag property with forms and code in VB 2012? -

i writing program using database customers , technicians. main form (customerincidents) has toolstripbutton opens different form (searchbystate) user inputs state code , looks incidents.

if user clicks 1 of datagrid cells want customers information stored in tag when form closed using ok button show in main form (customerincidents).

edited 03/11/14 12:21pm

the problem in main form. when click ok button in second form tries convert dialogresult button string. can't figure out how fix it.

customer form (main form) opens secondary form

private sub btnopenstate_click(byval sender system.object,  byval e system.eventargs) handles btnopenstate.click         dim frmsearchstate new findcustomer  ----->>dim selectedbutton dialogresult = frmsearchstate.showdialog()         if selectedbutton = windows.forms.dialogresult.ok             customeridtoolstriptextbox.text = frmsearchstate.tag.tostring         end if' 

search state form (secondary form) or "child form"

private sub btnok_click(message string, byval e datagridviewcelleventargs) handles btnok.click      message = customersdatagridview.rows(e.rowindex).cells(e.columnindex).value.tostring      me.tag = message     me.dialogresult = dialogresult.ok end sub 

the click event button not have datagridviewcelleventargs parameter, , throw exception when try use it.

you don't need use tag property since can create own property.

in child form, create property called gridvalue:

private sub btnok_click(sender object, e eventargs) handles btnok.click   if dgv.currentcell nothing orelse dgv.currentcell.value nothing     messagebox.show("a cell needs selected.")   else     me.dialogresult = dialogresult.ok   end if end sub  public readonly property gridvalue string       return dgv.currentcell.value.tostring   end end property 

in parent form, can access information:

using frmsearchstate new findcustomer   if frmsearchstate.showdialog(me) = dialogresult.ok     customeridtoolstriptextbox.text = frmsearchstate.gridvalue   end if end using