how get list of data of T variable

Question

hi there

how to send a list of specific class to such method:

 

public static DataTable SetPropertyToDataTable<T>(T dataList,Type _class) where T : class
       {
           Dictionary<string, object> columns = new Dictionary<string, object>();

           var properties =_class.GetProperties();

           foreach (var item in dataList)
               foreach (var property in properties)
               {
                   var name = property.Name;
                   var value = property.GetValue(item, null);

                   if(!columns.ContainsKey(name))
                       columns.Add(name, value);
               }

           return ImportPropertyAndValues(columns);
       }

 

 

I mean T datalist