C# code to filter a datatable

Let's say we have a DataTable in which their is a column of age. We need to select the person whose age is the older one. The below code will do

public DataTable GetData()

{

        DataTable dt = new DataTable();

        //Add some columns

        dt.Columns.Add(new DataColumn("Age", typeof(Int32)));

        //Add some rows

        //First Row

        DataRow row1 = dt.NewRow();

        row1("Age") = 21;

        //Second Row

        DataRow row2 = dt.NewRow();

        row2("Age") = 11;

        //Third Row

        DataRow row3 = dt.NewRow();

        row3("Age") = 12;

        //Fourth Row

        DataRow row4 = dt.NewRow();

        row4("Age") = 55;

        //Fifth Row

        DataRow row5 = dt.NewRow();

        row5("Age") = 18;      



        //Add the rows to the table

        dt.Rows.Add(row1);

        dt.Rows.Add(row2);

        dt.Rows.Add(row3);

        dt.Rows.Add(row4);

        dt.Rows.Add(row5);

        //return the table

        return dt;

}

Then filter as under

var oldestRecord = GetData().AsEnumerable().Select(dr=>dr["Age"]).Max();