Question

I’m using this part of code in my system.

double countA = 0.00;  
double countB = 0.00; 


if (myrow.grade == "A") 
{ 
  countA += 1.00; 
}
else if (myrow.grade == "B") 
{
  countB += 1.00;  
}

countALabel.Text = Convert.ToString(countA);
countBLabel.Text = Convert.ToString(countB);

The code is supposed to calculate how many student in my examMarks table that get “A” or “B” and display it using labels. However I keep getting 0 value even if there are students who get “A” and “B” in my table?

How do i get the increment value?

Answer 1

I refactored your code a bit. I hope you won’t mind.

  double countA= 0.00;
  double countB= 0.00;
  int test= 0;

  string entry= myrow.grade.Trim().ToUpper();

  switch(entry)
  {
      case "A":
      countA++;
      break;
      case "B":
      countB++;
      break;
      default:
      test++;
  }

  countALabel.Text = Convert.ToString(countA);     
  countBLabel.Text = Convert.ToString(countB);

I added a ‘test’ variable that will tell you if the problem is within the code or outside the code. Also, try putting a breakpoint and watch the value of ‘myrow.grade’. Goodluck!