nothing

Any time an object uses the this keyword, it’s referring to itself.  It’s a reference that points to the object that calls it. huh.

public void TellMe(string message, Elephant whoSaidIt)
{
    MessageBox.Show(whoSaidIt.Name + " says: " + message) ;
}

public void SpeakTo(Elephant whoToTalkTo, string message)
{
    whoToTalkTo.TellMe(message, this);
}
/*
Lloyd.SpeakTo(Lucinda, "Hello");
runs
 whoToTalkTo.TellMe(message, this); //this references Lloyd as the Elephant whoSaidIt object!!
which becomes
 Lucinda.TellMe(message, [a reference to Lloyd]); //this is replaced with a reference to Lloyd's object */

After writing this out and like an hour I finally get it. The resulting output will be “Lloyd says: Hello” because this is referencing the object that executed the method (in this case it was Lloyd executing the SpeakTo() method).  something something, may add more practical insight later.

On a side note I now use http://www.megatome.com/syntaxhighlighter/ for my source code examples. yay.

So I want to create a database connection to my work database using Visual C# 2010 Express, but I come to find out that express editions don’t have remote database connections setup (wtf) so here is what I did to at least get a working connection.  I don’t believe this is complete so for now this is here for reference.

I found connection strings from http://www.connectionstrings.com/sql-server-2005 and am using the following:

Connect via an IP address

Data Source=190.190.200.100,1433;Network Library=DBMSSOCN;Initial Catalog=myDataBase;User ID=myUsername;Password=myPassword;

Declared within the base of the class

System.Data.SqlClient.SqlConnection con;

DataSet ds1 = new DataSet();

System.Data.SqlClient.SqlDataAdapter da;

Within the Form_Load

con = new System.Data.SqlClient.SqlConnection();

con.ConnectionString = "Data Source=1.2.3.4,1433;Initial Catalog=DB;User ID=readonly;Password=ro1;";

txtPartNumber.Text = "";

//con.Open();

try

{

con.Open();

richTextBox1.Text = "Connection Success!";

}

catch(Exception exp)

{

Console.WriteLine("Connection Failed! {0}", exp);

}

//MessageBox.Show("Connection Open!");

sql = "SELECT * From Product";

//MessageBox.Show(sql);

da = new System.Data.SqlClient.SqlDataAdapter(sql, con);

da.Fill(ds1, "Product");  //DataAdapter populated called Product

richTextBox1.Text = "PART NUMBER  NAME\n ===========================================";

//DisplayResults();

con.Close();

// MessageBox.Show("Connection Closed!");

con.Dispose();