Question

May I know what’s wrong with my code below.. ’cause it doesn’t show the result. I want to view the name of employees, their number of activities per month, then their average grade by dividing the num. of activities to their score. I hope you can help me to do this. I want to view it on list box

the format is this:

Juan Dela Cruz
Count: 10    
Score: 5
Grade: 2

econ = new SqlConnection();
econ.ConnectionString = emp_con;
econ.Open();
int found = -1;
string Log_User, Count, Score;
int iGrade = 0;
string n = "";
string strScore = "Score: ";
string strGrade = "Grade: ";
string strCount = "Count: ";
ecmd = new SqlCommand("SELECT Log_User, Count = COUNT(Det_Score), Score = SUM(Det_Score) FROM MEMBER M,DETAILS D WHERE D.Emp_Id = M.Emp_Id AND Month(Sched_Start) like" + "'" + comMonth.Text + "'AND Year(Sched_Start) like" + "'" + txtYear.Text + "'GROUP BY Log_User", econ);
ecmd.CommandType = CommandType.Text;
ecmd.Connection = econ;
dr = ecmd.ExecuteReader();
listBox1.Text = txtYear.Text;
listBox1.Text = comMonth.Text;
while (dr.Read())
{
 Log_User = (string)dr["Log_User"];
 Count = (string)dr["Count"];
 Score = (string)dr["Score"];
 iGrade = Convert.ToInt32(Count) / Convert.ToInt32(Score);
 found += 1;
 listBox1.Items.Insert(found, Convert.ToString(n));
 listBox1.Items.Insert(found, Convert.ToString(strGrade) + Convert.ToString(iGrade));
 listBox1.Items.Insert(found, Convert.ToString(strScore) + Convert.ToString(Score));
 listBox1.Items.Insert(found, Convert.ToString(strCount) + Convert.ToString(Count));
 listBox1.Items.Insert(found, Convert.ToString(Log_User));
 listBox1.Items.Insert(found, Convert.ToString(n));
}

econ.Close();
}
catch (Exception x)
{
  MessageBox.Show(x.GetBaseException().ToString(), "Connection Status", MessageBoxButtons.OK, MessageBoxIcon.Error);
}

I want to view the result here but I can’t see the output. Is there any problem in my sql statement?? In MS SQL 2005 when I run the sql, it run smoothly but when I run it to VS 2010, it doesn’t appear.

Answer 1

listBox1.Items.Clear();
listBox1.Text = "";
econ = new SqlConnection();
econ.ConnectionString = emp_con;
econ.Open();
float iGrade = 0;
float Grade = 0.00F;
string Log_User;
float Count, Score;
string n = "";
string strScore = "Score: ";
string strGrade = "Grade: ";
string strCount = "Count: ";
string date = DateTime.Now.ToShortTimeString();
ecmd = new SqlCommand("SELECT Log_User, Count = COUNT(Det_Score), Score = SUM(Det_Score) FROM MEMBER M,DETAILS D WHERE D.Emp_Id = M.Emp_Id AND Log_User like" + "'" + Convert.ToString(comEmployee.Text) + "'AND Month(Sched_Start) =" + "'" + Convert.ToInt32(iMonth) + "'AND Year(Sched_Start) =" + "'" + Convert.ToInt32(txtYear.Text) + "'GROUP BY Log_User", econ);
ecmd.CommandType = CommandType.Text;
ecmd.Connection = econ;
dr = ecmd.ExecuteReader();
listBox1.Items.Add("As of " + date + ": "+ comMonth.Text + ", "+ txtYear.Text);
while (dr.Read())
{
   if (dr == null || !dr.HasRows)
   {
      MessageBox.Show("No record found.", "Error");
   }
   else
   {
      Log_User = (string)dr["Log_User"];
      Count = (dr["Count"] as int?) ?? 0;
      Score = (dr["Score"] as int?) ?? 0;
      try
      {
         iGrade = Score / Count;
         Grade = iGrade * 100;
      }
      catch (DivideByZeroException)
      {
          Console.WriteLine("Exception occured");
      }
      listBox1.Items.Add(Convert.ToString(n));
      listBox1.Items.Add(Convert.ToString(Log_User));
      listBox1.Items.Add(Convert.ToString(strCount + Count));
      listBox1.Items.Add(Convert.ToString(strScore + Score));
      listBox1.Items.Add(Convert.ToString(strGrade + Grade));
      }
   }               
   econ.Close();

the code above is my answer for my question..I hope it can help others. Thanks to those people who helped me to figured it out.. 😀 God bless