C#

JoeRip wrote:

do you mean the itcoStatus object?

JoeRip wrote:

if I simply keep overwriting the itcoStatus object with a new instance (not explicitly releasing the old instance) are the handlers bound to the new instance? Or did they become defunct when the old instance was stomped?

JoeRip wrote:

how do you compare exceptions?

try
{
   // do some code
}
catch (System.NullReferenceException)
{
   // do cleanup for handling a null reference
}
catch (System.InvalidOperationException)
{
   // do some other cleanup
}

try
{
   // do some code that throws an ArgumentNullException
}
catch (System.ArgumentException)
{
   // do cleanup for handling a general argument exception
}
catch (System.ArgumentNullException)
{
   // this handler will never be run
}
 
try
{
   // do some code that throws an ArgumentNullException
}
catch (System.ArgumentNullException)
{
   // this handler will be run
}
catch (System.ArgumentException)
{
   // do cleanup for handling a general argument exception
}

JoeRip wrote:

So it stands to reason that you can somehow say "if myException is X, do this" somehow.

SqlConnection connection = new SqlConnection("your connection string goes here");
SqlCommand myCommand = new SqlCommand("Select * from MyTable");
myCommand.Connection = connection;
SqlDataReader reader = myCommand.ExecuteReader();
while(reader.Reader())
{
   // This will pull a string from the first column in the MyTable
   string nodeText = reader.GetString(0);

   // This will create a tree node and add it to the tree view. 
   TreeNode node = new TreeNode(nodeText);
   myTreeView.Nodes.Add(node);
}