Call ASP.NET function from JavaScript?

by

Well, if you don’t want to do it using Ajax or any other way and just want a normal ASP.NET postback to happen, here is how you do it (without using any other libraries):

It is a little tricky though… 🙂

i. In your code file (assuming you are using C# and .NET 2.0 or later) add the following Interface to your Page class to make it look like

public partial class Default : System.Web.UI.Page, IPostBackEventHandler{}

ii. This should add (using Tab–Tab) this function to your code file:

public void RaisePostBackEvent(string eventArgument) { }

iii. In your onclick event in JavaScript, write the following code:

var pageId = '<%=  Page.ClientID %>';
__doPostBack(pageId, argumentString);

This will call the ‘RaisePostBackEvent’ method in your code file with the ‘eventArgument’ as the ‘argumentString’ you passed from the JavaScript. Now, you can call any other event you like.

P.S: That is ‘underscore-underscore-doPostBack’ … And, there should be no space in that sequence… Somehow the WMD does not allow me to write to underscores followed by a character!

More Related Contents:

  1. Accessing Asp.net controls using jquery (all options)
  2. Accessing control client name and not ID in ASP.NET
  3. How to call a C# function from JavaScript?
  4. jQuery returning “parsererror” for ajax request
  5. force browsers to get latest js and css files in asp.net application
  6. How to fire a button click event from JavaScript in ASP.NET
  7. Passing dynamic javascript values using Url.action()
  8. Function not defined error while using asp.net ajax
  9. Uploading File using Ajax in Asp.Net Core
  10. ASP.NET Parse DateTime result from ajax call to javascript date
  11. ASP.Net double-click problem
  12. How does this code call id with html?
  13. onclick or inline script isn’t working in extension
  14. How to call multiple JavaScript functions in onclick event?
  15. How to use __doPostBack()
  16. How do I add a simple onClick event handler to a canvas element?
  17. Execute PHP function with onclick
  18. How to call code behind server method from a client side JavaScript function?
  19. make iframe height dynamic based on content inside- JQUERY/Javascript
  20. onclick or onClick?
  21. Use Browser Search (Ctrl+F) through a button in website?
  22. Javascript Audio Play on click
  23. Get index of clicked element using pure javascript
  24. How to call javascript function from code-behind
  25. How to set javascript variables using MVC4 with Razor
  26. how to show confirmation alert with three buttons ‘Yes’ ‘No’ and ‘Cancel’ as it shows in MS Word
  27. Change value of input and submit form in JavaScript
  28. Function not calling within an onclick event
  29. focus on next tabindex of HTML element onEnter keypress by JQuery
  30. onclick calling hide-div function not working

Leave a Comment