public override bool Equals(object other)
{
if (other is DataRelationPropertyDescriptor)
{
DataRelationPropertyDescriptor descriptor = (DataRelationPropertyDescriptor)other;
return(descriptor.Relation == this.Relation);
}
return(false);
}
public override bool Equals([NotNullWhen(true)] object?other)
{
if (other is DataRelationPropertyDescriptor)
{
DataRelationPropertyDescriptor descriptor = (DataRelationPropertyDescriptor)other;
return(descriptor.Relation == Relation);
}
return(false);
}
protected virtual void RelationCollectionChanged(object sender, CollectionChangeEventArgs e) {
DataRelationPropertyDescriptor NullProp = null;
OnListChanged(
e.Action == CollectionChangeAction.Add ? new ListChangedEventArgs(ListChangedType.PropertyDescriptorAdded, new DataRelationPropertyDescriptor((System.Data.DataRelation)e.Element)) :
e.Action == CollectionChangeAction.Refresh ? new ListChangedEventArgs(ListChangedType.PropertyDescriptorChanged, NullProp):
e.Action == CollectionChangeAction.Remove ? new ListChangedEventArgs(ListChangedType.PropertyDescriptorDeleted, new DataRelationPropertyDescriptor((System.Data.DataRelation)e.Element)) :
/*default*/ null
);
}
public override bool Equals(object obj)
{
DataRelationPropertyDescriptor descriptor = obj as DataRelationPropertyDescriptor;
if (descriptor == null)
{
return(false);
}
return(Relation == descriptor.Relation);
}
private ListChangedEventArgs CollectionToListChangeEventArgs(CollectionChangeEventArgs e)
{
ListChangedEventArgs args;
if (e.Action == CollectionChangeAction.Remove)
{
args = null;
}
else if (e.Action == CollectionChangeAction.Refresh)
{
args = new ListChangedEventArgs(ListChangedType.PropertyDescriptorChanged, null);
}
else
{
object obj;
if (typeof(DataTable).IsAssignableFrom(e.Element.GetType()))
{
obj = new DataTablePropertyDescriptor((DataTable)e.Element);
}
else // Assume a DataRelation
{
obj = new DataRelationPropertyDescriptor((DataRelation)e.Element);
}
if (e.Action == CollectionChangeAction.Add)
{
args = new ListChangedEventArgs(ListChangedType.PropertyDescriptorAdded, (PropertyDescriptor)obj);
}
else
{
args = new ListChangedEventArgs(ListChangedType.PropertyDescriptorDeleted, (PropertyDescriptor)obj);
}
}
return(args);
}
PropertyDescriptorCollection ITypedList.GetItemProperties(PropertyDescriptor [] listAccessors)
{
if (dataTable == null)
{
return(new PropertyDescriptorCollection(new PropertyDescriptor [0]));
}
// FIXME: use listAccessors somehow
PropertyDescriptor [] descriptors =
new PropertyDescriptor [dataTable.Columns.Count + dataTable.ChildRelations.Count];
int d = 0;
for (int col = 0; col < dataTable.Columns.Count; col++)
{
DataColumn dataColumn = dataTable.Columns[col];
DataColumnPropertyDescriptor descriptor;
descriptor = new DataColumnPropertyDescriptor(dataColumn.ColumnName, col, null);
descriptor.SetComponentType(typeof(System.Data.DataRowView));
descriptor.SetPropertyType(dataColumn.DataType);
descriptor.SetReadOnly(dataColumn.ReadOnly);
descriptor.SetBrowsable(dataColumn.ColumnMapping != MappingType.Hidden);
descriptors [d++] = descriptor;
}
for (int rel = 0; rel < dataTable.ChildRelations.Count; rel++)
{
DataRelation dataRelation = dataTable.ChildRelations [rel];
DataRelationPropertyDescriptor descriptor;
descriptor = new DataRelationPropertyDescriptor(dataRelation);
descriptors [d++] = descriptor;
}
return(new PropertyDescriptorCollection(descriptors));
}
/// <devdoc>
/// Retrieves an array of properties that the given component instance
/// provides. This may differ from the set of properties the class
/// provides. If the component is sited, the site may add or remove
/// additional properties. The returned array of properties will be
/// filtered by the given set of attributes.
/// </devdoc>
internal PropertyDescriptorCollection GetPropertyDescriptorCollection(Attribute[] attributes) {
if (propertyDescriptorCollectionCache == null) {
int columnsCount = Columns.Count;
int relationsCount = ChildRelations.Count;
PropertyDescriptor[] props = new PropertyDescriptor[columnsCount + relationsCount]; {
for (int i = 0; i < columnsCount; i++) {
props[i] = new DataColumnPropertyDescriptor(Columns[i]);
}
for (int i = 0; i < relationsCount; i++) {
props[columnsCount + i] = new DataRelationPropertyDescriptor(ChildRelations[i]);
}
}
propertyDescriptorCollectionCache = new PropertyDescriptorCollection(props);
}
return propertyDescriptorCollectionCache;
}
private ListChangedEventArgs CollectionToListChangeEventArgs (CollectionChangeEventArgs e)
{
ListChangedEventArgs args;
if (e.Action == CollectionChangeAction.Remove)
args = null;
else if (e.Action == CollectionChangeAction.Refresh)
args = new ListChangedEventArgs(ListChangedType.PropertyDescriptorChanged, null);
else {
object obj;
if (typeof (DataTable).IsAssignableFrom (e.Element.GetType()))
obj = new DataTablePropertyDescriptor ((DataTable) e.Element);
else // Assume a DataRelation
obj = new DataRelationPropertyDescriptor((DataRelation) e.Element);
if (e.Action == CollectionChangeAction.Add)
args = new ListChangedEventArgs(ListChangedType.PropertyDescriptorAdded, (PropertyDescriptor) obj);
else
args = new ListChangedEventArgs(ListChangedType.PropertyDescriptorDeleted, (PropertyDescriptor) obj);
}
return args;
}
private void UpdatePropertyDescriptorsCache ()
{
PropertyDescriptor[] descriptors = new PropertyDescriptor[Columns.Count + ChildRelations.Count];
int index = 0;
foreach (DataColumn col in Columns)
descriptors [index++] = new DataColumnPropertyDescriptor (col);
foreach (DataRelation rel in ChildRelations)
descriptors [index++] = new DataRelationPropertyDescriptor (rel);
_propertyDescriptorsCache = new PropertyDescriptorCollection (descriptors);
}
PropertyDescriptorCollection ITypedList.GetItemProperties (PropertyDescriptor [] listAccessors)
{
if (dataTable == null)
return new PropertyDescriptorCollection (new PropertyDescriptor [0]);
// FIXME: use listAccessors somehow
PropertyDescriptor [] descriptors =
new PropertyDescriptor [dataTable.Columns.Count + dataTable.ChildRelations.Count];
int d = 0;
for (int col = 0; col < dataTable.Columns.Count; col ++) {
DataColumn dataColumn = dataTable.Columns[col];
DataColumnPropertyDescriptor descriptor;
descriptor = new DataColumnPropertyDescriptor (dataColumn.ColumnName, col, null);
descriptor.SetComponentType (typeof (System.Data.DataRowView));
descriptor.SetPropertyType (dataColumn.DataType);
descriptor.SetReadOnly (dataColumn.ReadOnly);
descriptor.SetBrowsable (dataColumn.ColumnMapping != MappingType.Hidden);
descriptors [d++] = descriptor;
}
for (int rel = 0; rel < dataTable.ChildRelations.Count; rel ++) {
DataRelation dataRelation = dataTable.ChildRelations [rel];
DataRelationPropertyDescriptor descriptor;
descriptor = new DataRelationPropertyDescriptor (dataRelation);
descriptors [d++] = descriptor;
}
return new PropertyDescriptorCollection (descriptors);
}
internal PropertyDescriptorCollection GetPropertyDescriptorCollection(Attribute[] attributes)
{
if (this.propertyDescriptorCollectionCache == null)
{
int count = this.Columns.Count;
int num4 = this.ChildRelations.Count;
PropertyDescriptor[] properties = new PropertyDescriptor[count + num4];
for (int i = 0; i < count; i++)
{
properties[i] = new DataColumnPropertyDescriptor(this.Columns[i]);
}
for (int j = 0; j < num4; j++)
{
properties[count + j] = new DataRelationPropertyDescriptor(this.ChildRelations[j]);
}
this.propertyDescriptorCollectionCache = new PropertyDescriptorCollection(properties);
}
return this.propertyDescriptorCollectionCache;
}
protected virtual void RelationCollectionChanged(object sender, CollectionChangeEventArgs e)
{
DataRelationPropertyDescriptor propDesc = null;
this.OnListChanged((e.Action == CollectionChangeAction.Add) ? new ListChangedEventArgs(ListChangedType.PropertyDescriptorAdded, new DataRelationPropertyDescriptor((DataRelation)e.Element)) : ((e.Action == CollectionChangeAction.Refresh) ? new ListChangedEventArgs(ListChangedType.PropertyDescriptorChanged, propDesc) : ((e.Action == CollectionChangeAction.Remove) ? new ListChangedEventArgs(ListChangedType.PropertyDescriptorDeleted, new DataRelationPropertyDescriptor((DataRelation)e.Element)) : null)));
}
