How to pass an array in a Query String?

Today I am going to give an example of passing an array in a query string. We have two pages one is Sender.aspx and second is Receiver.aspx. We will create the ArrayList in Sender.aspx and sent it to Receiver.aspx.

Code in Sender.aspx

//Create instance of ArrayList

ArrayList arrTest = new ArrayList();

//Add element into arraylist

arrTest.Add("1");

arrTest.Add("2");

arrTest.Add("3");

//create query string value using join method String class

string strQueyString = String.Join("||", ((string[])arrTest.ToArray(typeof(String))));

           

//sending arrayliat values to Reciver.aspx

Response.Redirect("Receiver.aspx?param=" + strQueyString); 

Code in Receiver.aspx

//get the value of query string

string[] param = Request["param"].ToString().Split('|');

//create array list

ArrayList arrTest = new ArrayList();

foreach (string str in arrTest)

{

    arrTest.Add(str);

}

Note: - You have to ensure that your array string's length doesn't exceed the permissible maximum length of query string.

Happy coding!!