संपादित करें

इसके माध्यम से साझा किया गया

DataRowComparer<TRow> Class

  • Reference

Definition

Namespace:
System.Data
Assembly:
System.Data.Common.dll
Assembly:
System.Data.DataSetExtensions.dll
Assembly:
netstandard.dll
Package:
System.Data.DataSetExtensions v4.5.0
Source:
DataRowComparer.cs
Source:
DataRowComparer.cs
Source:
DataRowComparer.cs

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

generic <typename TRow>
 where TRow : DataRowpublic ref class DataRowComparer sealed : System::Collections::Generic::IEqualityComparer<TRow>
public sealed class DataRowComparer<TRow> : System.Collections.Generic.IEqualityComparer<TRow> where TRow : DataRow
type DataRowComparer<'Row (requires 'Row :> DataRow)> = class
    interface IEqualityComparer<'Row (requires 'Row :> DataRow)>
Public NotInheritable Class DataRowComparer(Of TRow)
Implements IEqualityComparer(Of TRow)

Type Parameters

TRow

The type of objects to be compared, typically DataRow.

Inheritance
Object
DataRowComparer<TRow>
Implements
IEqualityComparer<TRow>

Remarks

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.

Properties

Default

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

Methods

Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
Equals(TRow, TRow)

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

Serves as the default hash function.

(Inherited from Object)
GetHashCode(TRow)

Returns a hash code for the specified DataRow object.
GetType()

Gets the Type of the current instance.

(Inherited from Object)
MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
ToString()

Returns a string that represents the current object.

(Inherited from Object)

Applies to

See also