Multiple SQL task objects inside a package object is not generating proper DTSX

Question


I am programmatically adding multiple ExecuteSQLtask objects inside a package. I am specifying all the required properties to the ExecuteSQLtask objects.  However, when I save the package object to dtsx, the package looses the properties of some
of the ExecuteSQLtask object.
In the below example, I have created 3 ExecuteSQL task objects using the function AddSqlTask. However, once you run it, one of the objects will loose its properties. What makes it more weird is the fact that sometimes, object 1 looses the properties,
some times, its object number 2. Its random. I know that these objects are COM objects. Is there something I need to careful of when setting the properties ? Why are the values lost when I save them to DTSX ?
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Data.SqlClient;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Timers;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Tasks.FileSystemTask;
using Microsoft.SqlServer.Dts.Tasks.BulkInsertTask;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Pipeline;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Tasks.ExecuteSQLTask;
using Microsoft.SqlServer.Dts.Tasks.ExecutePackageTask;
namespace PackageCreator
class Program
static void Main(string[] args)
#region Package 1
Package package1 = new Package();
#region ConnectionString
AddSqlConnection(
package1,
ConfigurationManager.AppSettings["ServerHostName"],
ConfigurationManager.AppSettings["SqlServerDefaultDB"]
#endregion
AddSqlTask(package1, "P1 - Task1");
AddSqlTask(package1, "P1 - Task2");
AddSqlTask(package1, "P1 - TaskFinal");
#region Add Dependencies
package1.PrecedenceConstraints.Add(
package1.Executables[0] as TaskHost,
package1.Executables[1] as TaskHost
package1.PrecedenceConstraints.Add(
package1.Executables[1] as TaskHost,
package1.Executables[2] as TaskHost
#endregion
#endregion
#region Package 2
Package package2 = new Package();
#region ConnectionString
AddSqlConnection(
package2,
ConfigurationManager.AppSettings["ServerHostName"],
ConfigurationManager.AppSettings["SqlServerDefaultDB"]
#endregion
AddSqlTask(package2, "P2 - TaskFinal");
#region ExecutePackageTaskClass
Executable exec1 = package2.Executables.Add("STOCK:ExecutePackageTask");
TaskHost th = exec1 as TaskHost;
ExecutePackageTask myTask = th.InnerObject as ExecutePackageTask;
myTask.PackageID = package1.ID;
#endregion
#region Add Dependencies
package2.PrecedenceConstraints.Add(
package2.Executables[0] as TaskHost,
package2.Executables[1] as TaskHost
#endregion
#endregion
//new Ispac(package1, package1.ID).DeployAndRun();
SavePackage(package1);
SavePackage(package2);
var packageList = new List<Package>();
packageList.Add(package1);
packageList.Add(package2);
new IspacPackageCollections(packageList).DeployAndRun();
Console.Read();
private static void AddSqlTask(Package package, string component)
//Thread.Sleep(5000);
package.Executables.Add("STOCK:SQLTask");
ExecuteSQLTask executeSQLTask = (package.Executables[package.Executables.Count - 1]
as TaskHost).InnerObject
as ExecuteSQLTask;
executeSQLTask.Connection = package.Connections[0].ID;
executeSQLTask.SqlStatementSource = "insert into [dbo].[SupersetPackageDependencies] (Component) values ('" +
component + @"')";
private static void SavePackage(Package package)
string packageNetworkLocation = @""
+ ConfigurationManager.AppSettings["packageNetworkLocation"]
+ @"\" + package.ID + ".dtsx";
new Application().SaveToXml(
packageNetworkLocation,
package,
null
//new Application().SaveToSqlServer(
// package,
// null,
// "ANUPN8470P",
// null,
// null
#region AddConnectionManager
private static ConnectionManager AddSqlConnection(Package package, string server, string database)
return AddConnection(
package,
"OLEDB",
String.Format(
CultureInfo.InvariantCulture,
"Provider=SQLOLEDB.1;Data Source={0};Persist Security Info=False;Initial Catalog={1};Integrated Security=SSPI;",
server,
database)
private static ConnectionManager AddConnection(Package package, string type, string connectionString)
ConnectionManager manager = package.Connections.Add(type);
manager.ConnectionString = connectionString;
manager.Name = String.Format(
CultureInfo.InvariantCulture,
"{0} Connection",
type);
return manager;
#endregion
public static void AddExecuteSqlTask(
Package _package,
string _componentId
_package.Executables.Add("STOCK:SQLTask");
// Get the task host wrapper
ExecuteSQLTask executeSQLTask = (_package.Executables[_package.Executables.Count - 1]
as TaskHost).InnerObject
as ExecuteSQLTask;
#region Set required properties
executeSQLTask.Connection = _package.Connections[0].ID;
executeSQLTask.SqlStatementSource = "insert into [dbo].[SupersetPackageDependencies] (Component) values ('" +
_componentId + @"')";
#endregion
//return executeSQLTask;

Answer 1

Why you do not tell what properties get lost?
And why is the same get repeated (you want parallel?):
package1.Executables[0] as TaskHost,
package1.Executables[1] as TaskHost
package1.PrecedenceConstraints.Add(
package1.Executables[1] as TaskHost,
package1.Executables[1]
And why not to add them
like
package1.PrecedenceConstraints.Add(
package1.Executables[0] as TaskHost);,
package1.PrecedenceConstraints.Add( package1.Executables[1] as TaskHost
Arthur
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