Question

I am trying to get a datagrid to display different colour rows based on the quantity of the item.

The problem I’m having is the if statement:

if (RowType == < 5) 

is invalid, how do I parse the row type to be checked against a value?

foreach (DataGridViewRow row in dtaPart.Rows)
{
    //Cell three is where quantity is 
    string RowType = row.Cells[3].Value.ToString();

    if (RowType ==  //> 5)
    {
        row.DefaultCellStyle.BackColor = Color.White;
        row.DefaultCellStyle.ForeColor = Color.Black;
    }
    else if (RowType == //< 5)
    {
        row.DefaultCellStyle.BackColor = Color.Orange;
        row.DefaultCellStyle.ForeColor = Color.Black;
    }
    else if (RowType == //< 1)
    {
        row.DefaultCellStyle.BackColor = Color.Red;
        row.DefaultCellStyle.ForeColor = Color.Black;
    }
}

Answer 1

You can use double value = double.Parse(RowType) then check if value > 5, < 5, < 1 etc.

However, if your datagrid column already contains a numeric type, like double or int, you don’t need to call ToString() and then parse the string; So instead of this:

string RowTypeStr = row.Cells[3].Value.ToString(); 
double RowType = double.Parse(RowTypeStr);

but you can directly cast the value:

double RowType = (double)row.Cells[3].Value;