WPF 2个datagrid之间同步进度条

最新推荐文章于 2023-12-13 16:03:27 发布

君子居易

最新推荐文章于 2023-12-13 16:03:27 发布

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本文介绍了一种实现两个DataGrid同步滚动的方法。通过反射获取内部滚动条，并监听滚动变化事件，当一个DataGrid滚动时，另一个DataGrid也会做出相应滚动。这种方法适用于WPF应用中需要同步显示数据的场景。

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前端代码：

<Grid DockPanel.Dock="Left" Width="400">
                <DataGrid Name="dgSource" VerticalScrollBarVisibility="Visible"  EnableRowVirtualization="False" ScrollViewer.ScrollChanged="DgSource_ScrollChanged" >
                     
                </DataGrid>
            </Grid>
            <Grid>
                <DataGrid Name="dgTo"   VerticalScrollBarVisibility="Visible" EnableRowVirtualization="False" ScrollViewer.ScrollChanged="DgTo_ScrollChanged">
                   
                </DataGrid>
            </Grid>

后端代码：

private void DgTo_ScrollChanged(object sender, ScrollChangedEventArgs e)
        {
            ScrollChanged(dgTo, dgSource, e);
        }

        void ScrollChanged(DataGrid dg1, DataGrid dg2, ScrollChangedEventArgs e)
        {
            if (e.HorizontalChange != 0.0f)
            {
                ScrollViewer sv = null;
                Type t = dg1.GetType();
                try
                {
                    sv = t.InvokeMember("InternalScrollHost", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.GetProperty, null, dg2, null) as ScrollViewer;
                    sv.ScrollToHorizontalOffset(e.HorizontalOffset);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
            if (e.VerticalChange != 0.0f)
            {
                ScrollViewer sv = null;
                Type t = dg1.GetType();
                try
                {
                    sv = t.InvokeMember("InternalScrollHost", BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.GetProperty, null, dg2, null) as ScrollViewer;
                    sv.ScrollToVerticalOffset(e.VerticalOffset);
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }

        }

        private void DgSource_ScrollChanged(object sender, ScrollChangedEventArgs e)
        {
            ScrollChanged(dgSource, dgTo, e);
        }

转载：https://www.cnblogs.com/cvol/p/10647793.html

InvokeMember相关资料：https://blog.youkuaiyun.com/zjlovety/article/details/7038465

datagrid官方资料：https://referencesource.microsoft.com/#PresentationFramework/src/Framework/System/Windows/Controls/DataGrid.cs,6aee7202a7cddbd7