How to pass javascript variable to asp code with ASP.NET MVC

Question

for(var i=0; i<<%=Model.Mydatalist.Count%>;i++)
{
//then I need to pass i to Mydatalist like Model.Mydatalist[i]

}

//var myJSdata="<%Model.Mydatalist["&i&"]%>"; is not working.. as system see i (i's value) as a string, and will throw exception: cannot convert string to int.

I can access Model.Mydatalist with Model.Mydatalist[1] (a certain Int id) in my javascript, but I need to access Model.Mydatalist[i]. — Bolu
– Bolu, Commented May 27, 2010 at 15:24
What is in your Model.Mydatalist? is it a list of strings, ints, objects? — Justin
– Justin, Commented May 27, 2010 at 15:45

Justin · Accepted Answer · 2010-05-27 15:18:14Z

1

You'll need to do some kind of callback to the server for that. Once the page is loaded on the browser and the script runs it is no longer running on the server so you wont be able to access your Model.Mydatalist.

answered May 27, 2010 at 15:18

Justin

4,6424 gold badges32 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Bolu Over a year ago

I can access Model.Mydatalist with Model.Mydatalist[1] (a certain Int id) in my javascript, but I need to access Model.Mydatalist[i].

Justin Over a year ago

Yes, you will be able to get to Model.Mydatalist[1] since that is replaced with whatever is in that index when the page is built, and before it is sent over the wire.<br/> Trying to iterate through it in javascript, in a loop, will happen when the browser renders the page, after it has been sent across the wire.

Bolu Over a year ago

I see, I may need to define new action method to return JSON with proper format. Thank you. I cannot vote???

Justin Over a year ago

np :) JSON is a probably the best way to go, and with ASP MVC it's really easy to write up a quick action to return what you need..

Collectives™ on Stack Overflow

How to pass javascript variable to asp code with ASP.NET MVC

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related