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Add New Columns and Add rows into table from list values in C#

DataTable dtt = new DataTable();
dtt.Columns.Add("Name");
dtt.Columns.Add("ContactID");
dtt.Columns.Add("Date");
  foreach (var Item in qu.AsEnumerable())
   {
     DataRow dr = dtt.NewRow();
     dr["Name"] = Item.Name;
     dr["ContactID"] = Item.ContactID;
     dtt.Rows.Add(dr);
   }
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