RequiredColumnCollection Class |
Provides functionality for extracting the required columns for a data provider.
Inheritance HierarchySystemObject
System.Collections.GenericHashSetString
Colygon.MatchPoint.Core.DataProvidersRequiredColumnCollection
System.Collections.GenericHashSetString
Colygon.MatchPoint.Core.DataProvidersRequiredColumnCollection
Namespace: Colygon.MatchPoint.Core.DataProviders
Assembly: Colygon.MatchPoint (in Colygon.MatchPoint.dll) Version: 2019.2.1.0
SyntaxC#
[SerializableAttribute] public sealed class RequiredColumnCollection : HashSet<string>
The RequiredColumnCollection type exposes the following members.
Constructors| Name | Description | |
|---|---|---|
 | RequiredColumnCollection | Initializes a new instance of the RequiredColumnCollection class |
Properties| Name | Description | |
|---|---|---|
 | Comparer | Gets the IEqualityComparerT object that is used to determine equality for the values in the set. (Inherited from HashSetString.) |
| Count | Gets the number of elements that are contained in a set. (Inherited from HashSetString.) |
Methods| Name | Description | |
|---|---|---|
| Add | Adds the specified element to a set. (Inherited from HashSetString.) |
| AddFromExpression | |
| Clear | Removes all elements from a HashSetT object. (Inherited from HashSetString.) |
| Contains | Determines whether a HashSetT object contains the specified element. (Inherited from HashSetString.) |
| CopyTo(T) | Copies the elements of a HashSetT object to an array. (Inherited from HashSetString.) |
| CopyTo(T, Int32) | Copies the elements of a HashSetT object to an array, starting at the specified array index. (Inherited from HashSetString.) |
| CopyTo(T, Int32, Int32) | Copies the specified number of elements of a HashSetT object to an array, starting at the specified array index. (Inherited from HashSetString.) |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| ExceptWith | Removes all elements in the specified collection from the current HashSetT object. (Inherited from HashSetString.) |
| GetEnumerator | Returns an enumerator that iterates through a HashSetT object. (Inherited from HashSetString.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetObjectData | Implements the ISerializable interface and returns the data needed to serialize a HashSetT object. (Inherited from HashSetString.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| IntersectWith | Modifies the current HashSetT object to contain only elements that are present in that object and in the specified collection. (Inherited from HashSetString.) |
| IsProperSubsetOf | Determines whether a HashSetT object is a proper subset of the specified collection. (Inherited from HashSetString.) |
| IsProperSupersetOf | Determines whether a HashSetT object is a proper superset of the specified collection. (Inherited from HashSetString.) |
| IsSubsetOf | Determines whether a HashSetT object is a subset of the specified collection. (Inherited from HashSetString.) |
| IsSupersetOf | Determines whether a HashSetT object is a superset of the specified collection. (Inherited from HashSetString.) |
| OnDeserialization | Implements the ISerializable interface and raises the deserialization event when the deserialization is complete. (Inherited from HashSetString.) |
| Overlaps | Determines whether the current HashSetT object and a specified collection share common elements. (Inherited from HashSetString.) |
| Remove | Removes the specified element from a HashSetT object. (Inherited from HashSetString.) |
| RemoveWhere | Removes all elements that match the conditions defined by the specified predicate from a HashSetT collection. (Inherited from HashSetString.) |
| SetEquals | Determines whether a HashSetT object and the specified collection contain the same elements. (Inherited from HashSetString.) |
| SymmetricExceptWith | Modifies the current HashSetT object to contain only elements that are present either in that object or in the specified collection, but not both. (Inherited from HashSetString.) |
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| TrimExcess | Sets the capacity of a HashSetT object to the actual number of elements it contains, rounded up to a nearby, implementation-specific value. (Inherited from HashSetString.) |
| TryGetValue | Searches the set for a given value and returns the equal value it finds, if any. (Inherited from HashSetString.) |
| UnionWith | Modifies the current HashSetT object to contain all elements that are present in itself, the specified collection, or both. (Inherited from HashSetString.) |
Remarks
The collection of required columns is done as late as possible (before data is aggregated by the data provider) to
ensure that all dependencies for that data provider are established.
Controls (i.e. the DataGrid Web Part or the Composite Web Part) will add additional columns resulting from dependencies of connected Web Parts.
See Also