[Solved] Fire DropDownList SelectedIndexChanged event without reloading page in ASP.Net

Question

I have a gridview and dropdownlist let say the content of dropdownlist is YEAR and the content of gridview is Name and Year Now for everytime I change the Value of dropdownlist the content of gridview will change but it will not load the pageThanks

Azim · Accepted Answer

Put your DropDownList and GridView inside the Update Panel Set the OnSelectedIndexChange Event and Set Auto Postback to true for DropDownList You will be having the Partial Postback not full Postback

EmadKhan · Answer

Your page will be refreshed until you set it  as trigger in your update panel like thisltaspupdatepanelgtltcontenttemplategt you dropdown and anything you want will come hereltcontenttemplategtlttriggersgtltaspAsyncPostBackTrigger controlid  34yourdropdownid34 eventname34selectedindexchanged34gtlttriggersgtltaspupdatepanelgt

MDarwish · Answer

In addition to whats recommended by Azim and Emad you need to DataBind your gridview while postbacksPut this in your PageLoad Event Handlerif Not MeIsPostBack then  39Runs on Page Load   39BlaElse 39Runs on Post Back   GridViewDataBindEnd If

[Solved] Fire DropDownList SelectedIndexChanged event without reloading page in ASP.Net

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