How to fire the DropDownList.SelectedIndexChanged event
-
I have a vb.net (WebForm) program that is for initial data entry and if the transaction needs to be corrected it doubles as Edit/Update. I have a series of DropDownLists that work perfect when in initial entry mode. The problem comes when re-populating the transaction and appropiate dropdownlists are being populated in the code-behind. The problem is that the dropdownlists need to be populated with all employees and then the specific employee that is to appear (normally selected, now force selected in code-behind) does not fire the SelectedIndexChanged Event a second time without a page level update. Normally just changing the SelectedValue will cause the correct employee to appear. But, all of the elements of the dropdownlist have just been set, so the system does not recognize the new selection as one that is to be displayed. With SelectedIndexChanged being a "Server Side" Event is there a way to force this event from the clientside in code-behind? Or maybe there is a way to reset the selectedindexchanged property to think is has not been changed yet? If so, could you be kind enough to supply an example?
-
I have a vb.net (WebForm) program that is for initial data entry and if the transaction needs to be corrected it doubles as Edit/Update. I have a series of DropDownLists that work perfect when in initial entry mode. The problem comes when re-populating the transaction and appropiate dropdownlists are being populated in the code-behind. The problem is that the dropdownlists need to be populated with all employees and then the specific employee that is to appear (normally selected, now force selected in code-behind) does not fire the SelectedIndexChanged Event a second time without a page level update. Normally just changing the SelectedValue will cause the correct employee to appear. But, all of the elements of the dropdownlist have just been set, so the system does not recognize the new selection as one that is to be displayed. With SelectedIndexChanged being a "Server Side" Event is there a way to force this event from the clientside in code-behind? Or maybe there is a way to reset the selectedindexchanged property to think is has not been changed yet? If so, could you be kind enough to supply an example?
ASk this in the ASP.NET Forum.
A guide to posting questions on CodeProject[^]
Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic
2006, 2007, 2008
But no longer in 2009...