ItemConstraintEventArgs 类

为 ItemConstraint 事件提供数据。

命名空间: Microsoft.Synchronization
程序集: Microsoft.Synchronization（在 microsoft.synchronization.dll 中）

语法

声明
Public Class ItemConstraintEventArgs
    Inherits EventArgs
用法
Dim instance As ItemConstraintEventArgs

public class ItemConstraintEventArgs : EventArgs

public ref class ItemConstraintEventArgs : public EventArgs

public class ItemConstraintEventArgs extends EventArgs

public class ItemConstraintEventArgs extends EventArgs

备注

对于抵触冲突解决策略设置为 ApplicationDefined 的抵触冲突和所有非抵触约束冲突，在报告约束冲突时发生 ItemConstraintEventArgs。

示例

下面的示例实现 ItemConstraint 事件的处理程序。该处理程序向用户显示冲突项，并基于用户的响应设置约束冲突解决操作。

Private Sub HandleItemConstraint(ByVal sender As [Object], ByVal args As ItemConstraintEventArgs)
    If ConstraintConflictReason.Collision = args.ConstraintConflictReason Then
        ' Display the two items that are in conflict and solicit a resolution from the user.
        Dim srcContact As New Contact(DirectCast(args.SourceChangeData, String()))
        Dim destContact As New Contact(DirectCast(args.DestinationChangeData, String()))
        Dim msg As String = ("Source change is " & srcContact.ToString() & vbLf & "Destination change is ") & destContact.ToString() & vbLf & "Click Yes to rename the source change and apply it." & vbLf & "Click No to rename the destination item and apply the source change." & vbLf & "Click Cancel to delete the destination item and apply the source change."
        Dim ccDlg As New ConstraintConflictDlg(msg)
        ccDlg.ShowDialog()

        ' Set the resolution action based on the user's response.
        args.SetResolutionAction(ccDlg.Resolution)
    Else
        args.SetResolutionAction(ConstraintConflictResolutionAction.SaveConflict)
    End If
End Sub

void HandleItemConstraint(Object sender, ItemConstraintEventArgs args)
{
    if (ConstraintConflictReason.Collision == args.ConstraintConflictReason)
    {
        // Display the two items that are in conflict and solicit a resolution from the user.
        Contact srcContact = new Contact((string[])args.SourceChangeData);
        Contact destContact = new Contact((string[])args.DestinationChangeData);
        string msg = "Source change is " + srcContact.ToString() +
                   "\nDestination change is " + destContact.ToString() +
                   "\nClick Yes to rename the source change and apply it." +
                   "\nClick No to rename the destination item and apply the source change." +
                   "\nClick Cancel to delete the destination item and apply the source change.";
        ConstraintConflictDlg ccDlg = new ConstraintConflictDlg(msg);
        ccDlg.ShowDialog();

        // Set the resolution action based on the user's response.
        args.SetResolutionAction(ccDlg.Resolution);
    }
    else 
    {
        args.SetResolutionAction(ConstraintConflictResolutionAction.SaveConflict);
    }
}

继承层次结构

System.Object
   System.EventArgs
    Microsoft.Synchronization.ItemConstraintEventArgs

线程安全

此类型的所有公共静态（在 Visual Basic 中共享 ）成员都是线程安全的。不保证任何实例成员的线程安全。

请参阅

参考

ItemConstraintEventArgs 成员
Microsoft.Synchronization 命名空间

概念

处理冲突