data table from view models list

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ASP.NET

MVC

DataTable

ViewModel

how can i convert list of view models to data table to print it in pdf later ?

i have error in this line : values[i] = Props[i].GetValue(item, null).ToString();
cant convert it !

public ActionResult detailsoperation(OperationViewModel operationvm

,

CategorieViewModel categories, string idd)
         {
             List<CategorieViewModel> list = (List<CategorieViewModel>)Session["categories"];
             list.Add(categories);
             DataTable dataTable = new DataTable(typeof(CategorieViewModel).Name);

             //Get all the properties
             PropertyInfo[] Props = typeof(OperationViewModel).GetProperties(BindingFlags.Public | BindingFlags.Instance);
             foreach (PropertyInfo prop in Props)
             {
                 //Setting column names as Property names
                 dataTable.Columns.Add(prop.Name);
             }

             foreach (CategorieViewModel item in list)
             {
                 var values = new object[Props.Length];
                 for (int i = 0; i < Props.Length; i++)
                 {
                     //inserting property values to datatable rows
                     values[i] = Props[i].GetValue(item, null).ToString();
                 }
                 dataTable.Rows.Add(values);
             }