private void practitioner_most_button_Click(object sender, EventArgs e)
{
//Get all practitioners
DataSet practitioners = SqlWorker.GetDataSet("Select * from Users Where type='Practitioner'");
//Show error message and exit if there is no practitioners
if (practitioners.Tables[0].Rows.Count == 0)
{
MessageBox.Show("There is no practitioners in the system!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
int maxWorkHours = 0, id, numOfLecturers = 0;
//Find max of work hours
for (int i = 0; i < practitioners.Tables[0].Rows.Count; i++)
{
id = Convert.ToInt32(practitioners.Tables[0].Rows[i]["ID"].ToString());
int tmpWorkHours = SqlWorker.getWorkHours(id, true, -1);
if (tmpWorkHours > maxWorkHours)
{
maxWorkHours = tmpWorkHours;
}
}
//Show error message and exit if none of the practitioners is working
if (maxWorkHours == 0)
{
MessageBox.Show("There is no practitioner that is working!", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
//Find the amount of practitioners with the maximum amount of work hours
for (int i = 0; i < practitioners.Tables[0].Rows.Count; i++)
{
id = Convert.ToInt32(practitioners.Tables[0].Rows[i]["ID"].ToString());
if (maxWorkHours == SqlWorker.getWorkHours(id, true, -1))
{
numOfLecturers++;
}
}
String msg;
//Create the message
if (numOfLecturers == 1)
{
msg = "The practitioner with the most hours is\n";
}
else
{
msg = "The practitioners with the most hours are\n";
}
//Add all practitioners to the message
for (int i = 0; i < practitioners.Tables[0].Rows.Count; i++)
{
id = Convert.ToInt32(practitioners.Tables[0].Rows[i]["ID"].ToString());
if (maxWorkHours == SqlWorker.getWorkHours(id, true, -1))
{
msg += "Name: " + SqlWorker.getNameById(id.ToString()) + "\n";
msg += "ID: " + id + "\n";
msg += "Number of work hours: " + maxWorkHours.ToString() + "\n\n";
}
}
//Show all lecturers with maximum amount of work hours
MessageBox.Show(msg, "Works the most", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
}
