C#

public class SomeCollection : CollectionBase
{
   public void Add(SomeClass sc)
   {
       this.List.Add(sc);
   }
}

class SomeClass
{
   public bool AmIPartOfCollection
   {
       get
       {
          //return false or true 
       }
   }

   public SomeCollection MyCollection
   {
      get
      {
          //if this object is part of SomeCollection return his SomeCollection
      }
   }
}

void Main()
{
    SomeClass temp = new SomeClass();
    //temp.AmIPartOfCollection - want to get false
    //temp.MyCollection - want to get null

    SomeCollection sc = new SomeCollection();
    sc.Add(temp);

    //temp.AmIPartOfCollection - want to get true
    //temp.MyCollection - want to get reference to "sc" object
}

//OraConn.ConnectionString = "User Id=XXXX;Password=xxxx;Data Source= (xxxxxxx));";

OraConn.ConnectionString = Dts.Variables["OraConn"].Value.ToString();

<pre>
listView1.ColumnClick += new ColumnClickEventHandler(this.MyLstVw_Vsble)

private void MyLstVw_Vsble(object Sender, EventArgs e)
{
       listView1.Visible = false; 
}


But my clarification is, why not assigning the controls visible property, directly like the below.


listView1.ColumnClick += listView1.Visible = true;

this.tbxFrequency10.Culture = new System.Globalization.CultureInfo("");
this.tbxFrequency10.Location = new System.Drawing.Point(177, 254);
this.tbxFrequency10.Mask = "000.000";
this.tbxFrequency10.Name = "tbxFrequency10";
this.tbxFrequency10.PromptChar = '0';
this.tbxFrequency10.Size = new System.Drawing.Size(135, 20);
this.tbxFrequency10.TabIndex = 116;
this.tbxFrequency10.TextMaskFormat = System.Windows.Forms.MaskFormat.IncludePromptAndLiterals;
this.tbxFrequency10.Validated += new System.EventHandler(this.Control_Validated);

public List<ProjectModel> GetProjects(ProjectType ProjectType, bool ActiveOnly = true, int ParentId = 0)
{
    using (SparesDataContext context = getDataContext())
    {
        List<ProjectModel> retVal = (from p in context.tblProjects
                                        where p.ProjectTypeId == (int)ProjectType &&
                                            p.ParentId == (ParentId == 0 ? p.ParentId : ParentId) &&
                                            p.IsActive == (ActiveOnly ? true : p.IsActive)
                                        select new ProjectModel
                                        {
                                            ParentId = p.ParentId,
                                            ProjectType = (ProjectType)p.ProjectTypeId,
                                            Caption = p.Caption,
                                            Warehouse1 = getWarehouseModel(p.WarehouseId1 == null ? 0 : p.WarehouseId1.Value),
                                            Warehouse2 = getWarehouseModel(p.WarehouseId1 == null ? 0 : p.WarehouseId1.Value),
                                            IsActive = p.IsActive.Value,
                                            Revision = p.Revision,
                                            Comments = p.Comments
                                        }).ToList();

        return retVal;
    }
}