今天遇到一个需求，要求能对可拖动的对象提供二种模式：允许拖动、禁止拖动。

之前的拖动为了省事，直接用了：Blend自带的MouseDragElementBehavior，于是就需要在cs代码中控制这个东东了。

折腾了一下，还算简单：

xaml代码

         
              
                   
                    
                
               
                           	
                		
                 	
                                
        
         点击拖动Canvas
                            
               
                   
                    
                
           
      
     

 

xaml.cs代码

using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Interactivity;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;using Microsoft.Expression.Interactivity;using Microsoft.Expression.Interactivity.Layout;namespace slTest{    public partial class MainPage : UserControl    {        public MainPage()        {            InitializeComponent();        }        private void btnEnable_Click(object sender, RoutedEventArgs e)        {            var behaviorsCollection = Interaction.GetBehaviors(c);            if (behaviorsCollection.Count>0)            {                var behavior = behaviorsCollection[0] as MouseDragElementBehavior;                if (behavior!=null){                    behavior.Attach(c);                }            }        }        private void btnDisable_Click(object sender, RoutedEventArgs e)        {            var behaviorsCollection = Interaction.GetBehaviors(c);            if (behaviorsCollection.Count > 0)            {                var behavior = behaviorsCollection[0] as MouseDragElementBehavior;                if (behavior!=null){                    behavior.Detach();                }            }        }           }}