DataRowComparer(TRow) Class
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DataRowComparer<TRow> Class


Compares two DataRow objects for equivalence by using value-based comparison.

Namespace:   System.Data
Assembly:  System.Data.DataSetExtensions (in System.Data.DataSetExtensions.dll)


generic<typename TRow>
where TRow : DataRow
public ref class DataRowComparer sealed : IEqualityComparer<TRow>

Type Parameters


The type of objects to be compared, typically DataRow.


Gets a singleton instance of DataRowComparer<TRow>. This property is read-only.

System_CAPS_pubmethodEquals(TRow, TRow)

Compares two DataRow objects by using a column-by-column, value-based comparison.


Determines whether the specified object is equal to the current object.(Inherited from Object.)


Serves as the default hash function. (Inherited from Object.)


Returns a hash code for the specified DataRow object.


Gets the Type of the current instance.(Inherited from Object.)


Returns a string that represents the current object.(Inherited from Object.)

This class implements the IEqualityComparer<T> interface and uses value-based semantics to compare DataRow objects. This class is required because the default implementations of some set-based operations (such as Distinct, Union, Intersect, and Except) use reference-based semantics to compare DataRow object references, instead of comparing the DataRow object values. The Default class is used to compare the values of the DataRow objects and does not compare the object references.

This class cannot be directly instantiated. Instead, the Default property must be used to return a singleton instance of the Default class.

This class is stateless.

This class is sealed and cannot be derived from.

.NET Framework
Available since 3.5

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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