The solution is to use cut and paste just like you might when moving text around in a document. We will cut the controls from the group box and then paste them inside of a tab page. The steps required are described in the following table:

REPLACE THE GROUPBOX WITH A TABPAGE (continued)

REPLACE THE GROUPBOX WITH A TABPAGE (continued)

The Photographs group box is now replaced with a Photos tab page. This tab is aligned on the left side of the tab control. The Alignment property uses the TabAlignment enumeration, with possible values Top, Bottom, Left, and Right.

As you may have noticed, when the Alignment property for a tab control is Left or Right, the Multiline property is automatically set to true. Compile and run the application to make sure the controls still behave as expected, including multiple selection and the owner-drawn list feature via the Thumbnails menu.

We will add a second TabPage later in the chapter to display the set of dates associated with the album in a calendar format. This will enable a discussion of the MonthCalendar class. Before we can do this, we will first provide the appropriate support for the DateTaken property of the Photograph class.

11.3DATES AND TIMES

We will return to tab pages and our MyAlbumEditor application in a moment. In this section we finally preserve the Date Taken value entered by the user in our toEditDlg form. As you may recall, in chapter 9 we intentionally ignored this value to avoid converting the user-entered string value into a date. At the time we said there was a better way to deal with date constructs. In this section we finally see exactly what this looks like.

Dealing with dates and times is one of those issues that prevent some programmers from getting a good night’s sleep. With 3600 seconds in an hour, and 24 hours in a day, and different days per month, and leap years almost but not quite every four years, it’s no wonder. Fortunately, most languages and environments these days provide direct support for date-time values to simplify handling of these constructs. In the

.NET Framework, this support extends to Windows Forms controls as well.

In chapter 5 we saw how the DateTime structure is used to represent a date-time value within a program. In this section we will look at representing a date-time value