Pass array from client side to service side C#

I am calling a javascript function on button click using onclientclick with below function.

arrValue array will have all the required values and how can I move this array values to server side for further process.

function addValues() {
       debugger;
       var arrValue = [];
       var hdnValue = document.getElementById("hdn").value;
       var strValue = hdnValue.split(',');
       for (var i = 0; i < strValue.length; i++) {
           var ddlValue = document.getElementById(strValue[i]).value;
           arrValue.push(ddlValue);
       }
   }