C# create DataTable

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C# create DataTable -

DataTable dt = new DataTable(); 
dt.Clear();
dt.Columns.Add("Name");
dt.Columns.Add("Marks");
DataRow _ravi = dt.NewRow();
_ravi["Name"] = "ravi";
_ravi["Marks"] = "500";
dt.Rows.Add(_ravi);

datatable in c# -

String[] arr = new String[] { "a", "b" };
            DataTable dt = new DataTable();
            dt.Columns.Add("name");
            dt.Columns.Add("other");
            dt.Rows.Add(arr);

            foreach (DataRow r in dt.Rows)
            {
                Console.WriteLine(r["name"].ToString() + " - " + r["other"].ToString());
            }

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