/// <include file='doc\DesignTimeData.uex' path='docs/doc[@for="DesignTimeData.GetSelectedDataSource1"]/*' />
/// <devdoc>
/// </devdoc>
public static IEnumerable GetSelectedDataSource(IComponent component, string dataSource, string dataMember)
{
IEnumerable selectedDataSource = null;
object selectedDataSourceObject = DesignTimeData.GetSelectedDataSource(component, dataSource);
if (selectedDataSourceObject != null)
{
IListSource listSource = selectedDataSourceObject as IListSource;
if (listSource != null)
{
if (listSource.ContainsListCollection == false)
{
// the returned list is itself the list we want to bind to
selectedDataSource = (IEnumerable)listSource.GetList();
}
else
{
selectedDataSource = GetDataMember(listSource, dataMember);
}
}
else
{
Debug.Assert(selectedDataSourceObject is IEnumerable);
selectedDataSource = (IEnumerable)selectedDataSourceObject;
}
}
return(selectedDataSource);
}
/// <include file='doc\DataFieldConverter.uex' path='docs/doc[@for="DataFieldConverter.GetStandardValues"]/*' />
/// <devdoc>
/// <para>
/// Gets the fields present within the selected data source if information about them is available.
/// </para>
/// </devdoc>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
object[] names = null;
if (context != null)
{
ArrayList list = new ArrayList();
PropertyDescriptorCollection props = null;
// REVIEW: We should try and support the multi-select scenario - Get the data source
// from each selected component. If they are the same, we can proceed,
// otherwise return an empty collection.
// This converter shouldn't be used in a multi-select scenario. If it is, it simply
// returns no standard values.
IComponent component = context.Instance as IComponent;
if (component != null)
{
ISite componentSite = component.Site;
if (componentSite != null)
{
IDesignerHost designerHost = (IDesignerHost)componentSite.GetService(typeof(IDesignerHost));
if (designerHost != null)
{
IDesigner designer = designerHost.GetDesigner(component);
if (designer is IDataSourceProvider)
{
IEnumerable dataSource = ((IDataSourceProvider)designer).GetResolvedSelectedDataSource();
if (dataSource != null)
{
props = DesignTimeData.GetDataFields(dataSource);
}
}
}
}
}
if (props != null)
{
foreach (PropertyDescriptor propDesc in props)
{
list.Add(propDesc.Name);
}
}
names = list.ToArray();
Array.Sort(names);
}
return(new StandardValuesCollection(names));
}
public override TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
string[] array = null;
if (context != null)
{
IComponent instance = context.Instance as IComponent;
if (instance != null)
{
ISite site = instance.Site;
if (site != null)
{
IDesignerHost service = (IDesignerHost)site.GetService(typeof(IDesignerHost));
if (service != null)
{
IDesigner dataBoundControlDesigner = service.GetDesigner(instance);
DesignerDataSourceView view = this.GetView(dataBoundControlDesigner);
if (view != null)
{
IDataSourceDesigner dataSourceDesigner = view.DataSourceDesigner;
if (dataSourceDesigner != null)
{
string[] viewNames = dataSourceDesigner.GetViewNames();
if (viewNames != null)
{
array = new string[viewNames.Length];
viewNames.CopyTo(array, 0);
}
}
}
if (((array == null) && (dataBoundControlDesigner != null)) && (dataBoundControlDesigner is IDataSourceProvider))
{
IDataSourceProvider provider = dataBoundControlDesigner as IDataSourceProvider;
object dataSource = null;
if (provider != null)
{
dataSource = provider.GetSelectedDataSource();
}
if (dataSource != null)
{
array = DesignTimeData.GetDataMembers(dataSource);
}
}
}
}
}
if (array == null)
{
array = new string[0];
}
Array.Sort(array, Comparer.Default);
}
return(new TypeConverter.StandardValuesCollection(array));
}
/// <include file='doc\DataMemberConverter.uex' path='docs/doc[@for="DataMemberConverter.GetStandardValues"]/*' />
/// <devdoc>
/// <para>
/// Gets the fields present within the selected data source if information about them is available.
/// </para>
/// </devdoc>
public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
string[] names = null;
if (context != null)
{
// REVIEW: We should try and support the multi-select scenario - Get the data source
// from each selected component. If they are the same, we can proceed,
// otherwise return an empty collection.
// This converter shouldn't be used in a multi-select scenario. If it is, it simply
// returns no standard values.
IComponent component = context.Instance as IComponent;
if (component != null)
{
ISite componentSite = component.Site;
if (componentSite != null)
{
IDesignerHost designerHost = (IDesignerHost)componentSite.GetService(typeof(IDesignerHost));
if (designerHost != null)
{
IDesigner designer = designerHost.GetDesigner(component);
if (designer is IDataSourceProvider)
{
object dataSource = ((IDataSourceProvider)designer).GetSelectedDataSource();
if (dataSource != null)
{
names = DesignTimeData.GetDataMembers(dataSource);
}
}
}
}
}
if (names == null)
{
names = new string[0];
}
Array.Sort(names);
}
return(new StandardValuesCollection(names));
}
public virtual IEnumerable GetDesignTimeData(int minimumRows, out bool isSampleData)
{
isSampleData = true;
return(DesignTimeData.GetDesignTimeDataSource(DesignTimeData.CreateDummyDataBoundDataTable(), minimumRows));
}
public override TypeConverter.StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
object[] values = null;
if (context != null)
{
IComponent instance = context.Instance as IComponent;
if (instance != null)
{
ISite site = instance.Site;
if (site != null)
{
IDesignerHost host = (IDesignerHost)site.GetService(typeof(IDesignerHost));
if (host != null)
{
IDesigner dataBoundControlDesigner = host.GetDesigner(instance);
DesignerDataSourceView view = this.GetView(dataBoundControlDesigner);
if (view != null)
{
IDataSourceViewSchema schema = null;
try
{
schema = view.Schema;
}
catch (Exception exception)
{
IComponentDesignerDebugService service = (IComponentDesignerDebugService)site.GetService(typeof(IComponentDesignerDebugService));
if (service != null)
{
service.Fail(System.Design.SR.GetString("DataSource_DebugService_FailedCall", new object[] { "DesignerDataSourceView.Schema", exception.Message }));
}
}
if (schema != null)
{
IDataSourceFieldSchema[] fields = schema.GetFields();
if (fields != null)
{
values = new object[fields.Length];
for (int i = 0; i < fields.Length; i++)
{
values[i] = fields[i].Name;
}
}
}
}
if (((values == null) && (dataBoundControlDesigner != null)) && (dataBoundControlDesigner is IDataSourceProvider))
{
IDataSourceProvider provider = dataBoundControlDesigner as IDataSourceProvider;
IEnumerable dataSource = null;
if (provider != null)
{
dataSource = provider.GetResolvedSelectedDataSource();
}
if (dataSource != null)
{
PropertyDescriptorCollection dataFields = DesignTimeData.GetDataFields(dataSource);
if (dataFields != null)
{
ArrayList list = new ArrayList();
foreach (PropertyDescriptor descriptor in dataFields)
{
list.Add(descriptor.Name);
}
values = list.ToArray();
}
}
}
}
}
}
}
return(new TypeConverter.StandardValuesCollection(values));
}
