/// <summary>
/// Create and populate a DataView using the specified view. The object type is automatically
/// determined from the contents of the data parameter (which must not be null or empty).
/// </summary>
/// <param name="viewName">The name of the view</param>
/// <param name="data">The list of objects to include in the view</param>
/// <returns>The new DataView instance</returns>
public static DataView GetDataView(string viewName, IList data)
{
Check.Verify(data != null && data.Count > 0, Error.NullParameter, "data");
Type type = data[0].GetType();
// construct the named view for the type found in the supplied data
ObjectView view = GetObjectView(type, viewName);
return(view.PopulateDataView(data));
}
private static ObjectView GetObjectView(PersistenceBroker broker, Type type, string viewName)
{
ObjectMap map = ObjectFactory.GetMap(broker, type);
Check.VerifyNotNull(viewName, Error.NullParameter, "viewName");
ObjectView view = map.Views[viewName] as ObjectView;
Check.VerifyNotNull(view, Error.NoSuchView, viewName, type);
return(view);
}
/// <summary>
/// Create and populate a DataView with the given name. Use this method when you need
/// to specify the object type manually (which is the case when the view is specified
/// on a base class and the list may contain various subclasses).
/// </summary>
/// <param name="type">The type associated with the given view name</param>
/// <param name="viewName">The name of the view</param>
/// <param name="data">The list of objects to include in the view</param>
/// <returns>The new DataView instance</returns>
public static DataView GetDataView(Type type, string viewName, IList data)
{
if (type == null)
{
type = data[0].GetType();
}
// construct the named view for the type found in the supplied data
ObjectView view = GetObjectView(type, viewName);
return(view.PopulateDataView(data));
}
/// <summary>
/// Obtain a DataTable for the specified type using the "default" view.
/// </summary>
/// <returns>The new DataTable instance</returns>
public static DataTable GetDataTable(Type type)
{
try
{
ObjectView view = GetObjectView(type, "default");
return(view.GetDataTable());
}
catch (Exception e)
{
Check.Fail(e, Error.ViewError, "default", type);
throw;
}
}
/// <summary>
/// Obtain a DataTable for the specified type and view.
/// </summary>
/// <returns>The new DataTable instance</returns>
public static DataTable GetDataTable(Type type, string viewName)
{
try
{
ObjectView view = GetObjectView(type, viewName);
return(view.GetDataTable());
}
catch (Exception e)
{
Check.Fail(e, Error.ViewError, viewName, type);
throw;
}
}
/// <summary>
/// Adds a column to the specified named DataView. The ViewMap is a small helper class
/// used to connect DataView columns with object properties.
/// </summary>
/// <param name="viewName">The name of the DataView</param>
/// <param name="viewMap">The ViewMap instance to add to this view</param>
public void AddViewColumn(string viewName, ViewMap viewMap)
{
ObjectView view;
if (!views.ContainsKey(viewName))
{
view = new ObjectView(this, viewName);
views[viewName] = view;
}
else
{
view = (ObjectView)views[viewName];
}
view.AddColumn(viewMap);
}
public static void PopulateDataGrid(Type type, DataGrid dg, string viewName, IList data, string linkFieldName)
{
if (type == null)
{
type = data[0].GetType();
}
ObjectView ov = GetObjectView(type, viewName);
dg.AutoGenerateColumns = false;
dg.Columns.Clear();
foreach (DataGridColumn column in ov.GetGridColumns(linkFieldName))
{
dg.Columns.Add(column);
}
dg.DataSource = data;
dg.DataBind();
}
/// <summary>
/// Adds a column to the specified named DataView. The ViewMap is a small helper class
/// used to connect DataView columns with object properties.
/// </summary>
/// <param name="viewName">The name of the DataView</param>
/// <param name="viewMap">The ViewMap instance to add to this view</param>
public void AddViewColumn( string viewName, ViewMap viewMap )
{
ObjectView view;
if( ! views.ContainsKey( viewName ) )
{
view = new ObjectView( this, viewName );
views[ viewName ] = view;
}
else
{
view = (ObjectView) views[ viewName ];
}
view.AddColumn( viewMap );
}
