Foreach Loop based on Variable - SSIS

Let me simplify this type of enumerator by an example:

1- Create two variables:

Name                     DataType

Collection               object

Item                      object

2- add a Script Task, set User::Collection as ReadWriteVariables

3- choose language as Visual C#, and write this code in main() method:

public void Main()
        {
            System.Collections.ArrayList arr = new System.Collections.ArrayList();
            arr.Add("the first item");
            arr.Add("the second item");
            arr.Add("the third item");
            Dts.Variables["User::Collection"].Value = arr;

            Dts.TaskResult = (int)ScriptResults.Success;
        }

4- save and build the Script.

5- add a Foreach Loop container, set enumerator as Foreach From Variable Enumerator.

6- in enumerator configuration , select variable User::Collection .

7- in variable mapping tab, set variable User::Item with index 0 .

8- add another Script Task inside the foreach loop container,

9- set language as Visual C#, set ReadOnlyVariable as User::Item .

10- write this script in main() method, and then save and build script:

public void Main()
        {
            MessageBox.Show(Dts.Variables["User::Item"].Value.ToString());

            Dts.TaskResult = (int)ScriptResults.Success;
        }

11- Run the package.

After running the package , you will see message box three times, each times with on statement.

That's All.