Question

Wpf中“由于其他线程拥有此对象，因此调用线程无法对其进行访问”的问题

<Grid>
<UniformGrid Rows="2" Margin="0,0,0,40">
<Label Name="lab1" Content="1"></Label>
<Label Name="lab2" Content="2"></Label>
</UniformGrid>
<Button Content="Play" Width="40" Height="30" Name="play" VerticalAlignment="Bottom" Click="play_Click"></Button>
</Grid>

代码中写了很简单的一个线程
private void play_Click(object sender, RoutedEventArgs e)//按钮响应事件
{
Thread th = new Thread(refresh);
th.IsBackground = true;
th.Start();
}
void refresh()
{
while(true)
{
ActualDraw(8);
}
}
public delegate void DrawHandler(int n);
void Draw(int n)
{
App.Current.Dispatcher.Invoke(DispatcherPriority.Normal, new DrawHandler(ActualDraw), n);
}
void ActualDraw(int n)
{
lab1.Content = n.ToString();
}
哪里有问题？
对不起
是我写错了

应该是代码中
while循环中

ActualDraw(8);改为Draw(8);即可，是我写错了

Answer 1

refresh方法改成这样就对了：

 void refresh()
        {
            int i = 0;
            while (true)
            {
                i++;
                Thread.Sleep(1000);
                Draw(i);
            }
        }

Answer 2

ActualDraw(8);

换成委托试试

Draw(8);