// Find the specified entityTypeFilter in the list and add it if it's not there
private EntityDataSourceEntityTypeFilterItem FindEntityTypeFilter(string entityTypeFilter)
{
if (!String.IsNullOrEmpty(entityTypeFilter))
{
EntityDataSourceEntityTypeFilterItem typeToSelect = null;
foreach (EntityDataSourceEntityTypeFilterItem entityTypeFilterItem in _entityTypeFilters)
{
// Ignore case here when searching the list for a matching item, but set the temporary state property to the
// correctly-cased version from metadata so that if the user clicks Finish, the correct one will be saved. This
// allows some flexibility the designer without preserving an incorrectly-cased value that could cause errors at runtime.
if (String.Equals(entityTypeFilterItem.EntityTypeName, entityTypeFilter, StringComparison.OrdinalIgnoreCase))
{
typeToSelect = entityTypeFilterItem;
}
}
// didn't find a matching type, so just create a placeholder item and add it to the list
if (typeToSelect == null)
{
typeToSelect = new EntityDataSourceEntityTypeFilterItem(entityTypeFilter);
_entityTypeFilters.Add(typeToSelect);
}
Debug.Assert(typeToSelect != null, "expected a non-null string for EntityTypeFilter");
return(typeToSelect);
}
return(s_entityTypeFilterNoneItem);
}
public void SetSelectedEntityTypeFilter(EntityDataSourceEntityTypeFilterItem selectedEntityTypeFilter)
{
Debug.Assert(selectedEntityTypeFilter != null, "cannot select null from EntityTypeFilter combobox");
_ignoreEvents = true;
_entityTypeFilterComboBox.SelectedItem = selectedEntityTypeFilter;
_ignoreEvents = false;
}
// Populate a list with the base type for the EntitySet plus all derived types, and a special entry to indicate no filter
// devnote: This method should not automatically reset Select because it can be used to load the initial state
// for the form, in which case we need to preserve any values that are already set on the data source control.
private void LoadEntityTypeFilters(EntityDataSourceEntitySetNameItem entitySetItem, string entityTypeFilter)
{
// If this is an EntitySet that we found in the project's metadata, get the type information
if (entitySetItem != null && entitySetItem.EntitySet != null)
{
_entityTypeFilters = _helper.GetEntityTypeFilters(entitySetItem.EntitySet.ElementType, false /*sortResults*/);
// add (None) to the beginning of the list
_entityTypeFilters.Insert(0, s_entityTypeFilterNoneItem);
// Try to find the specified type in list and add it if it isn't there
_selectedEntityTypeFilter = FindEntityTypeFilter(entityTypeFilter);
}
else
{
// if this is an unknown EntitySet, there is no way to find a list of types from metadata
// so just create a new list and placeholder for the specified type
_entityTypeFilters = new List <EntityDataSourceEntityTypeFilterItem>();
_entityTypeFilters.Add(s_entityTypeFilterNoneItem);
if (!String.IsNullOrEmpty(entityTypeFilter))
{
_selectedEntityTypeFilter = new EntityDataSourceEntityTypeFilterItem(entityTypeFilter);
_entityTypeFilters.Add(_selectedEntityTypeFilter);
}
else
{
_selectedEntityTypeFilter = s_entityTypeFilterNoneItem;
}
}
// Sort now after we might have added items above
_entityTypeFilters.Sort();
// Update the controls
_panel.SetEntityTypeFilters(_entityTypeFilters);
_panel.SetSelectedEntityTypeFilter(_selectedEntityTypeFilter);
}
// Set EntityTypeFilter in temporary storage and load the Select property
internal void SelectEntityTypeFilter(EntityDataSourceEntityTypeFilterItem selectedEntityTypeFilter)
{
_selectedEntityTypeFilter = selectedEntityTypeFilter;
// Reinitialize the Select control with a list of properties, don't preserve any existing Select value
LoadSelect(String.Empty);
}
