C#

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int [][] x = new int[2][];
x[0] = new int[5]; // First row has 5 columns
x[1] = new int[10];// Second row has 10
...
int [,]x = new int[2,10]; // both rows have 10 columns.

using System;<br />
using System.Data;<br />
using System.Collections;<br />
class CastTest {<br />
    const string COL = "test";<br />
    static void Main() {<br />
        Console.WriteLine("CastTest");<br />
        ArrayList list = new ArrayList();<br />
        string str = "Hello world";<br />
        list.Add(str);        <br />
        Console.WriteLine("arrayList created");        <br />
        DataTable table = new DataTable();<br />
        DataColumn dC = new DataColumn(COL, list.GetType());<br />
        table.Columns.Add(dC);<br />
        DataRow row = table.NewRow();<br />
        table.Rows.Add(row);<br />
        row[COL] = list;<br />
        Console.WriteLine("table created");        <br />
        object resultObj = table.Rows[0][COL];        <br />
        Console.WriteLine("resultObj type: " + resultObj.GetType());        <br />
        ArrayList resultList = (ArrayList) resultObj;        <br />
        string resultStr = (string)resultList[0];<br />
        Console.WriteLine(resultStr);<br />
    }<br />
}

string myName = @"My name is ; Ashok Dhamija";
label1.Text = myName;