Question

Here I need to call a javascript function first and after some time I need to call a c# function on the same button click event. Is it possible?

 <asp:ImageButton ID="imgBTNExportPPT" runat="server" Width="15" Height="15" border="0" 
 OnClientClick="JavaScript:exportCharts('JPG');" OnClick="imgBTNExportPPT_Click" ImageUrl="~/Images/PPT_icon.png" />

Any suggestion?

Answer 1

If by “after some time” you mean something like “after 3 seconds an action has to be executed” then you can use setTimeout setTimeout(functionToCallAfterIntervalToWait, intervalToWait)

If you want to call a server side method you can use an ajax call inside functionToCallAfterIntervalToWait – leave a comment if you need help with the ajax call

For an example on how to call your asp.net server method from javascript see this blogpost (google call asp .net server method from javascript for more examples/tutorials)

Assuming you are using jQuery you would write (using .ajax()):

$.ajax( { 
url:"yourAspxPage/NameofTheMethodToCall", 
data: {"nameOfParameter": valueOfParameter}, 
success: function (data) {
//this function will be called after the server side function executes successfuly
});

If you want that this function call is made after other client side operations make sure to write below (after) the other commands .