private void button3_Click(object sender, EventArgs e)
{
if (selected_item_id == nonselected)
{
System.Windows.Forms.MessageBox.Show("Firstly, select a student id to delete.");
}
else
{
Student student = catalog.getByIndex(selected_item_id);
if (MessageBox.Show("Are you sure you want to delete " + student.Name + " ? ", "Exit",
MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
{
try
{
conn.Connect();
string selectQ = "DELETE FROM students WHERE ID = " + selected_item_id;
query.setSQL(selectQ);
query.executeNonQuery();
catalog.deleteByIndex(selected_item_id);
setListView();
selected_item_id = nonselected;
}
catch (Exception ex)
{
MessageBox.Show("Delete error:" + ex.ToString());
}
finally
{
conn.Disconnect();
}
}
}
}
private void addOpp()
{
Student student = new Student();
//student.Id = Int32.Parse(textBox1.Text);
student.Name = textBox2.Text;
student.Surname = textBox3.Text;
student.BirthDate = textBox4.Text;
try
{
conn.Connect();
string selectQ = "insert into students (name,surname,birthdate) values(:PR1,:PR2,:PR3);";
query.setSQL(selectQ);
query.addParam("name", ParameterType.ptVarChar);
query.setParamValueSTRING("name", student.Name);
query.addParam("surname", ParameterType.ptVarChar);
query.setParamValueSTRING("surname", student.Surname);
query.addParam("birthdate", ParameterType.ptVarChar);
query.setParamValueSTRING("birthdate", student.BirthDate);
query.executeNonQuery();
query.setSQL("select max(id) as last_id from students;");
query.executeQuery();
query.first();
student.Id = query.getFiedValueINT("last_id");
catalog.add(student);
mainform.setListView();
MessageBox.Show("Student is added");
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
}
catch (Exception ex)
{
MessageBox.Show("Setup error:" + ex.ToString());
}
finally
{
conn.Disconnect();
}
}
private void addOpp()
{
Student student = new Student();
student.Name = textBox2.Text;
student.Surname = textBox3.Text;
student.BirthDate = textBox4.Text;
try
{
conn.Connect();
string selectQ = "insert into students (NAME,SURNAME,BIRTH_DATE) values( " + textBox2.Text + "," + textBox3.Text + "," + Convert.ToInt32(textBox4.Text) + ")";
query.setSQL(selectQ);
query.executeNonQuery();
query.setSQL("select max(id) as last_id from students;");
query.executeQuery();
query.first();
student.Id = query.getFiedValueINT("last_id");
catalog.add(student);
mainform.setListView();
MessageBox.Show("Student is added");
textBox2.Clear();
textBox3.Clear();
textBox4.Clear();
}
catch (Exception ex)
{
MessageBox.Show("Setup error:" + ex.ToString());
}
finally
{
conn.Disconnect();
}
}
private void setup()
{
ObjectFactory factory = ObjectFactory.getInstance();
factory.setMainForm(this);
catalog = factory.getCatalog();
query = (QueryBase)factory.create("query");
conn = (ConnectionBase)factory.create("connection");
conn.setConnString(ProjectVariables.getConnectionString());
query.setConnection(conn);
try
{
conn.Connect();
string selectQ = "SELECT * FROM students";
query.setSQL(selectQ);
query.executeQuery();
int i = 0;
query.first();
while (!query.eof())
{
Student student = new Student();
student.Id = query.getFiedValueINT("ID");
student.Name = query.getFiedValueSTRING("NAME");
student.Surname = query.getFiedValueSTRING("SURNAME");
student.BirthDate = query.getFiedValueSTRING("BIRTH_DATE");
catalog.add(student);
Console.WriteLine(i); i++;
query.next();
}
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("Setup error:" + ex.ToString());
}
finally
{
conn.Disconnect();
}
}