WPF/C#: How to simplify the use of codes when calling a function (Generating Images)
- by eibhrum
I created a function in one of my application that allows to generate an image (in WPF) by getting the 'source path' from the database that I am using:
public void ShowImageThumb()
{
try {
cn = new MySqlConnection();
cn.ConnectionString = ConfigurationManager.AppSettings["MyConnection"];
cn.Open();
MySqlCommand cmd = new MySqlCommand();
cmd.Connection = cn;
cmd.CommandType = CommandType.Text;
cmd.CommandText = "SELECT thumb FROM album WHERE thumbNo=1";
MySqlDataAdapter adp = new MySqlDataAdapter();
adp.SelectCommand = cmd;
DataTable dt = new DataTable();
adp.Fill(dt);
MySqlDataReader r = cmd.ExecuteReader();
while (r.Read())
{
BitmapImage bmi1 = new BitmapImage(new Uri(r[0].ToString(), UriKind.Relative));
image1.Source = bmi1;
}
r.Close();
cn.Close();
}
catch (Exception err){
System.Windows.MessageBox.Show(err.Message);
}
finally { }
}
Take a look on my SQL statement. I put a WHERE thumbNo=1 which allows the function to get 1 record. You see, I do have at least 10 records - file paths listed in that table.
I just wanna ask if there's a possible way to make my SQL statement something like this:
SELECT thumb FROM album;
while having this piece of code inserted in my function:
BitmapImage bmi2 = new BitmapImage(new Uri(r["second record?"].ToString(), UriKind.Relative));
image2.Source = bmi2; //something like this
BitmapImage bmi3 = new BitmapImage(new Uri(r["third record?"].ToString(), UriKind.Relative));
image3.Source = bmi3; //something like this
and so on and so forth, without ending up creating 10 different functions for 10 records.
ShowImageThumb2();
.
. // will not do this
.
ShowImageThumb10();
Sorry for the lengthy post. I hope somebody could answer back. Thanks!
