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For information about the tutorial series, see the first tutorial in the series.
In the previous tutorial you displayed related data; in this tutorial you'll update related data.
When you edit an instructor record, you want to be able to update the instructor's office assignment. Now you'll enhance the Instructor Edit page by adding the ability to change course assignments using a group of check boxes, as shown in the following screen shot: The relationship between the navigation property.
The Run the page (select the Instructors tab and then click Edit on an instructor). The UI that enables you to change which courses an instructor is assigned to is a group of check boxes.
To facilitate this, the scaffolded code includes controller methods and Create and Edit views that include a drop-down list for selecting the department.
The drop-down list sets the public Action Result Create() [Http Post] [Validate Anti Forgery Token] public Action Result Create([Bind(Include = "Course ID, Title, Credits, Department ID")]Course course) public Action Result Edit(int?
A check box for every course in the database is displayed, and the ones that the instructor is currently assigned to are selected.
To provide data to the view for the list of check boxes, you'll use a view model class.
The following illustrations show some of the pages that you'll work with.
When a new course entity is created, it must have a relationship to an existing department.
The department name in the Index page list comes from the navigation property, showing that the relationship was established correctly.
Run the Edit page (display the Course Index page and click Edit on a course). The Course Index page is displayed with the updated course data.
The indentation doesn't have to be perfect, but the lines must each be on a single line as shown or you'll get a runtime error.