C# fails when adding ArrayList to Existing Object-CodePudding

Working in Visual Studio 2022 on an ASP.NET web app,

I have an object named tractObject with three items. The third item is an ArrayList that will hold a list of objects named standObject.

  public class tractObject
    {
        private String tract_name = "";
        private long tract_id = 0;
        private ArrayList lstStandObject = new ArrayList(); //The list of standObject's

       public String p_lstStandObject
        {
            get
            {
                return lstStandObject;
            }
            set
            {
                lstStandObject= value;
            }
        }
            etc..
    }

I build an ArrayList of standObjects's dynamically but when I try to assign the ArrayList of standObjects to the tractObject Visual Studio throws an error with a generic error message (no details).

            //create an empty arraylist to hold the list of stand objects
            ArrayList arrList = new ArrayList();
            //call a function to get the list of stand objects - this works without error
            lstOfStandObjects = functionThatReturnsListOfStandObjects();
               
            for (int i = 0; i < lstOfStandObjects.Count; i  )
            {
               //populate the ArrayList with the stand objects - this works without error
                arrList.Add(lstOfStandObjects[i]);
            } 

            //add the ArrayList to the tractObject
            tractObject.p_lstStandObject = arrList; //<<<This is where the code fails.

Everything works fine until I try to assign the ArrayList (arrList) to the p_lstOfStandObject. This is maddening because I have used this exact same method dozens of times in the desktop (non-web) version of this application.

CodePudding user response：

The solution had to do with the maxJsonLength setting on the JavascriptSerializer. The json string being returned to the function exceeded the default of 102,400 characters.

To fix this problem I edited the web.config file with the following inside the tags;

<system.web.extensions>
    <scripting>
        <webServices>
            <jsonSerialization maxJsonLength="2000000000"/>
        </webServices>
    </scripting>
</system.web.extensions>