troubleshooting Question

Calculate days between dates excluding weekends

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tip2tailFlag for United Kingdom of Great Britain and Northern Ireland asked on
8 Comments1 Solution1753 ViewsLast Modified:
Hello all,

I am developing an application that will keep a record of "Parts" that are brought into the department and then charged out again to other departments.  The application will be able to monitor the time critical status of parts that must be used within 5 days to avoid a further charge.

I need to be able to get the number of days between the current date and the "inDate" of the part.  I then format my grid as required as can be seen in the code snippet.  The criteria is that 0 - 1 days - OK - Green; 2 - 4 days - WARNING - Yellow; 5+ days - RED - part handling charge applied.  This seems like a fairly simple problem with the exception of weekends which do not count.  So a part in on Friday should not be Yellow until Tuesday and not Red until Thursday onwards - ignoring Sat and Sun.

The other issue is that the department is open on a Saturday and the application must be able to take this into account - that the Today's Date might be a non working day and still calculate correctly.

I require some help in desigining a getDateDiff() function (returning an int) toi be used in the manner shown in the code snippet.

Please help!


Mark Young
DateTime inDate, toDate;
                    inDate = Convert.ToDateTime(gridParts.Rows[i].Cells["pDateInDataGridViewTextBoxColumn"].Value.ToString());
                    inDate = new DateTime(inDate.Year, inDate.Month, inDate.Day);
                    toDate = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day);
                    if (getDateDiff(inDate, toDate) < 2)
                        MessageBox.Show("G:" + getDateDiff(inDate, toDate));
                        gridParts.Rows[i].Cells["colIcon"].Value = Properties.Resources.emoticon_happy;
                    else if ((getDateDiff(inDate, toDate) >= 2) && (getDateDiff(inDate, toDate)) < 4)
                        MessageBox.Show("Y:" + getDateDiff(inDate, toDate));
                        gridParts.Rows[i].DefaultCellStyle.BackColor = Color.Yellow;
                        gridParts.Rows[i].Cells["colIcon"].Value = Properties.Resources.error;
                        yellowTotal = yellowTotal + 1;
                        MessageBox.Show("R:" + getDateDiff(inDate, toDate));
                        gridParts.Rows[i].DefaultCellStyle.BackColor = Color.Red;
                        gridParts.Rows[i].Cells["colIcon"].Value = Properties.Resources.emoticon_unhappy;
                        redTotal = redTotal + 1;
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