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MemberChangeConflict Class

MemberChangeConflict Class

Represents a situation in which an attempted update fails because member values have been updated since the client last read them.


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

public sealed class MemberChangeConflict

The MemberChangeConflict type exposes the following members.

Public propertyCurrentValueGets the current value of the member in conflict.
Public propertyDatabaseValueGets the database value of the member in conflict.
Public propertyIsModifiedGets a value that indicates whether the member data has been changed since the last database read or refresh.
Public propertyIsResolvedGets a value that indicates whether the conflict has been resolved.
Public propertyMemberGets metadata information about the member in conflict.
Public propertyOriginalValueGets the original value of the member in conflict.

Public methodEquals(Object)Determines whether the specified object is equal to the current object. (Inherited from Object.)
Public methodGetHashCodeServes as the default hash function. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodResolve(Object)Specifies the value to set as the current value for the member in conflict.
Public methodResolve(RefreshMode)Uses a RefreshMode parameter to automatically specify the value to set as the current value for the member in conflict.
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

// Add 'using System.Reflection' for this section.
Northwnd db = new Northwnd("...");


catch (ChangeConflictException e)
    Console.WriteLine("Optimistic concurrency error.");
    foreach (ObjectChangeConflict occ in db.ChangeConflicts)
        MetaTable metatable = db.Mapping.GetTable(occ.Object.GetType());
        Customer entityInConflict = (Customer)occ.Object;
        Console.WriteLine("Table name: {0}", metatable.TableName);
        Console.Write("Customer ID: ");
        foreach (MemberChangeConflict mcc in occ.MemberConflicts)
            object currVal = mcc.CurrentValue;
            object origVal = mcc.OriginalValue;
            object databaseVal = mcc.DatabaseValue;
            MemberInfo mi = mcc.Member;
            Console.WriteLine("Member: {0}", mi.Name);
            Console.WriteLine("current value: {0}", currVal);
            Console.WriteLine("original value: {0}", origVal);
            Console.WriteLine("database value: {0}", databaseVal);

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5

.NET Framework Client Profile

Supported in: 4

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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