Silverlight 2 - Simple Editing of Web Service Data in a DataGrid

核心提示： From there, I added in a Silverlight project and created a simple UI. It's just a DataGrid and a couple of buttons. I added a service referen

From there, I added in a Silverlight project and created a simple UI.

It's just a DataGrid and a couple of buttons. I added a service reference to my WCF service in order to get a proxy class to use to call the service asynchronously.

In order to populate the DataGrid, I make a call to my webservice, get the data, convert the results into an ObservableCollection<T> where T is a local class that I called DataRow;

　public enum RowState
　{
　　Clean,
　　Modified,
　　Inserted
　}
　public class DataRow
　{
　　public DataRow()
　　{
　　　State = RowState.Clean;
　　}
　　public int Id { get; set; }
　　public string FirstName { get; set; }
　　public string LastName { get; set; }
　　public int Age { get; set; }
　　public RowState State { get; set; }
　}

and then I just set up the UI so that it data binds 4 text box columns to the properties on my DataRow class.

I use that RowState enum to determine for each row whether it has been modified or inserted and I also keep a separate List<DataRow> for any rows that have been deleted.

From a UI perspective, I couldn't find a simple property which I could set to get the DataGrid to display a "blank insert row" so I just added a keyboard handler for the Insert key and the Delete key and that's how I handle insert/delete from the UI. For insert, I just add a blank DataRow instance into the ObservableCollection.