I have ArrayList in my Model and want to iterate through it in javascript. I am using following code but its giving me error : CS0103: The name 'i' does not exist in the current context
for(var i=0; i <= <%=Model.KeyList.Count%>; i++)
{
alert('<%=Model.KeyList[i]%>');
}
How do I solve this?
This will not work. The c# code is executed at the server side before the javascript code is executed therefore the variable i doesn't exist when you execute the c# code. I can't really tell you how to fix it as you don't say what you want to do. But you ether need to iterate the list server side in a c# loop, or client side in a js loop. You can't mix them together.
That code doesn't work. The foreach is evaluated at client and the <% ... %> instructions are evaluated at server. For that reason "i" doesn't exists, it only exists on the client's browser.
If you want to use JS to parse the list, you need to convert it to a javascript array. The final result you need to produce is this a collection of objects in { } notation (as in { name: "a", value: "b" }) and wrapped with [].
So you need to generate this client code and parse it on the client, or scrap it and process it on the server. Or, create an action result that returns a JsonResult and return the array; the MVC framework should auto convert for you; you'd have to request that with JavaScript via AJAX.
HTH.
