AssignExpression Propiedad

public string AssignExpression { get; set; }

using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Tasks.SendMailTask;
using Microsoft.SqlServer.Dts.Tasks.BulkInsertTask;

namespace ForLoopAPI
{
    class Program
    {
        static void Main(string[] args)
        {
            String varName = "MyVariable";
            int INIT_COUNT = 2;
            int MAX_COUNT = 5;

            Package pkg = new Package();
            Variable var = pkg.Variables.Add(varName, false, "", 0);
            Variable var2 = pkg.Variables.Add("Counter", false, "", 0);

            ForLoop forLoop = (ForLoop)pkg.Executables.Add("STOCK:ForLoop");
            forLoop.InitExpression = "@"+varName+" = "+INIT_COUNT;
            forLoop.EvalExpression = "@"+varName+" < "+MAX_COUNT;
            forLoop.AssignExpression = "@" + varName + " = @" + varName + " + " + INIT_COUNT;

            // Show a different syntax for setting these values.
            //forLoop.InitExpression = "@Counter = 1";
            //forLoop.AssignExpression = "@Counter = @Counter + 1";
            //forLoop.EvalExpression = "@Counter <= 10";

            // The ForLoop contains a Properties collection. 
           // Show how to set some properties using that collection.
            forLoop.Properties["Name"].SetValue(forLoop, "ForLoop Container");
            forLoop.Properties["Description"].SetValue(forLoop, "ForLoop Container");


            // Review the PackagePath of the ForLoop container.
            Console.WriteLine("PackagePath: {0}", forLoop.GetPackagePath());

            // Because the ForLoop is a container, it can contain tasks
            // that run at certain conditions.
            TaskHost thLoopMail = (TaskHost)forLoop.Executables.Add("STOCK:SendMailTask");
            TaskHost thLoopInsert = (TaskHost)forLoop.Executables.Add("STOCK:BulkInsertTask");
            Executables loopExecs = forLoop.Executables;
            Console.WriteLine("Number of Executables in ForLoop: {0}", loopExecs.Count);

            // Like other containers, precedence constraints can be set on the
            // contained tasks.
            PrecedenceConstraint pc = forLoop.PrecedenceConstraints.Add((Executable)thLoopMail, thLoopInsert);
            PrecedenceConstraints pcs = forLoop.PrecedenceConstraints;
            Console.WriteLine("Number of precedence constraints: {0}", pcs.Count);


            // Run the package. Because required properties on the tasks are not
            //  set, current sample code will fail.
            DTSExecResult result = pkg.Execute();
        }
    }
}