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I have created a sandboxed solution for SharePoint 2013 which contains sandboxed visual webpart.

I need to call JavaScript function from back end. How can I accomplish this requirement? How can we load the .aspx page and where will I write the code behind so that I can get the variables passed using JavaScript function.

I have to perform some action on server side before calling JavaScript function, so I have to make call from back end. I am not able to do it using 

Page.ClientScript.RegisterStartupScript(this.GetType(), "myScript", "resultSetFunction();", true);.
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  • There's a need (or reason) for call javascript function from back end instead make all the logic in javascript?
    – Mauricio Arias Olave
    Jun 4, 2015 at 19:55

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use variable this

this.Page.ClientScript...

Make sure u have referred JS file in the visual webpart.

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  • I have tried it with this.Page.ClientScript.RegisterStartupScript(this.GetType(), "myScript", "resultSetFunction();", true); and added alert on document.ready. I am able to get alert but Page.ClientScript.RegisterStartupScript(this.GetType(), "myScript", "resultSetFunction();", true); is not working... Can you plz give any other solution. Thanks for this one.
    – Trimantra Software Solution
    May 14, 2015 at 10:56
  • Use Registerclientscript instead of RegisterStartupScript
    – Shiva
    May 14, 2015 at 11:03
  • it seems you are calling "resultSetFunction()" function in the script which i guess u have written in JS file, if it is the case this will not work. Because you are running the register script function on serverside and pointing to client side script.
    – Shiva
    May 14, 2015 at 11:06
  • ohh...Ok.I am registering my script on RenderControl() method then what should I write on back end to call any function of that script file ?
    – Trimantra Software Solution
    May 14, 2015 at 11:47
  • You have register the JS function on Server side - we do this generally only for the samll function. You have t revise your business logic to implement. But the proposed comments solves your question.
    – Shiva
    May 14, 2015 at 11:51

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