public override bool Equals(object other)
{
if (other is DataColumnPropertyDescriptor)
{
DataColumnPropertyDescriptor descriptor = (DataColumnPropertyDescriptor)other;
return(descriptor.Column == Column);
}
return(false);
}
public override bool Equals([NotNullWhen(true)] object?other)
{
if (other is DataColumnPropertyDescriptor)
{
DataColumnPropertyDescriptor descriptor = (DataColumnPropertyDescriptor)other;
return(descriptor.Column == Column);
}
return(false);
}
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 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)
{
// FIXME: use listAccessors somehow
DataColumnPropertyDescriptor [] descriptors =
new DataColumnPropertyDescriptor [dataTable.Columns.Count];
DataColumnPropertyDescriptor descriptor;
DataColumn dataColumn;
for (int col = 0; col < dataTable.Columns.Count; col ++) {
dataColumn = dataTable.Columns[col];
descriptor = new DataColumnPropertyDescriptor(
dataColumn.ColumnName, col, null);
descriptor.SetComponentType (typeof (System.Data.DataRowView));
descriptor.SetPropertyType (dataColumn.DataType);
descriptor.SetReadOnly (dataColumn.ReadOnly);
descriptors [col] = descriptor;
}
return 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);
}
PropertyDescriptorCollection ICustomTypeDescriptor.GetProperties ()
{
DataColumnPropertyDescriptor[] descriptors =
new DataColumnPropertyDescriptor [FieldCount];
DataColumnPropertyDescriptor descriptor;
for (int col = 0; col < FieldCount; col++) {
descriptor = new DataColumnPropertyDescriptor(
GetName (col), col, null);
descriptor.SetComponentType (typeof (DbDataRecord));
descriptor.SetPropertyType (GetFieldType (col));
descriptors [col] = 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;
}
