public bool ratingBerekenen(RatingSysteem _Reken)
{
Settings mySettings = new Settings();
SqlConnection conn = new SqlConnection(mySettings.ConnectionString);
SqlCommand cmd = new SqlCommand();
cmd.CommandType = System.Data.CommandType.Text;
cmd.Connection = conn;
cmd.CommandText = "SELECT RatingTotal, RatingAmount FROM Rating WHERE ImgRatingID = @ratingID";
cmd.Parameters.AddWithValue("@ratingID", _Reken.ratingID);
try
{
conn.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
totaalAantalRating = reader.GetInt32(0);
aantalRating = reader.GetInt32(1);
}
totaalAantalRating += userRating;
aantalRating += 1;
nieuwGemRating = totaalAantalRating / aantalRating;
reader.Close();
cmd.Parameters.Clear();
cmd.CommandText = "UPDATE Rating SET Ratingtotal = @totaalRate, RatingAmount = @aantalRate, RatingAvg = @gemRating WHERE ImgRatingID = @ratingID";
cmd.Parameters.AddWithValue("@totaalRate", _Reken.totaalAantalRating);
cmd.Parameters.AddWithValue("@aantalRate", _Reken.aantalRating);
cmd.Parameters.AddWithValue("@gemRating", _Reken.nieuwGemRating);
cmd.Parameters.AddWithValue("@ratingID", _Reken.ratingID);
cmd.ExecuteNonQuery();
conn.Close();
return(true);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message.ToString());
return(false);
}
finally
{
if (conn.State == System.Data.ConnectionState.Open)
{
conn.Close();
}
conn.Dispose();
cmd = null;
}
}
private void clbRating_Click(object sender, EventArgs e)
{
int gegevenCijfer = Convert.ToInt32(clbRating.SelectedItem.ToString());
clbRating.Visible = false;
lblRate.Visible = false;
RatingSysteem rate = new RatingSysteem();
rate.RatingID = ratingID;
rate.UserRating = gegevenCijfer;
switch (gegevenCijfer)
{
case 1:
if (rate.ratingBerekenen(rate))
{
lblRateInfo.Visible = true;
lblCijfer.Visible = true;
lblCijfer.Text = Convert.ToString(rate.NeuwGemRating);
break;
}
else
{
MessageBox.Show("Er is iets mis gegaan");
break;
}
case 2:
if (rate.ratingBerekenen(rate))
{
lblRateInfo.Visible = true;
lblCijfer.Visible = true;
lblCijfer.Text = Convert.ToString(rate.NeuwGemRating);
break;
}
else
{
MessageBox.Show("Er is iets mis gegaan");
break;
}
case 3:
if (rate.ratingBerekenen(rate))
{
lblRateInfo.Visible = true;
lblCijfer.Visible = true;
lblCijfer.Text = Convert.ToString(rate.NeuwGemRating);
break;
}
else
{
MessageBox.Show("Er is iets mis gegaan");
break;
}
case 4:
if (rate.ratingBerekenen(rate))
{
lblRateInfo.Visible = true;
lblCijfer.Visible = true;
lblCijfer.Text = Convert.ToString(rate.NeuwGemRating);
break;
}
else
{
MessageBox.Show("Er is iets mis gegaan");
break;
}
case 5:
if (rate.ratingBerekenen(rate))
{
lblRateInfo.Visible = true;
lblCijfer.Visible = true;
lblCijfer.Text = Convert.ToString(rate.NeuwGemRating);
break;
}
else
{
MessageBox.Show("Er is iets mis gegaan");
break;
}
}
}