C# 中DataGridView和ListView多列时闪烁问题的解决方法

古城微笑少年丶 2024-04-17 06:08 36阅读 0赞

方法一  
首先定义类，将此类放在datagridview或ListView所在的窗体类外面，然后代码如下

// <summary>
    /// 双缓冲DataGridView,解决闪烁
    /// 使用方法：在DataGridView所在窗体的InitializeComponent方法中更改控件类型实例化语句将
    /// this.dataGridView1 = new System.Windows.Forms.DataGridView();   屏蔽掉，添加下面这句即可
    /// this.dataGridView1 = new DoubleBufferListView();
    /// </summary>
    class DoubleBufferDataGridView : DataGridView
    {
        public DoubleBufferDataGridView()
        {
            SetStyle(ControlStyles.DoubleBuffer | ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
            //UpdateStatus.Continue;
            UpdateStyles();
        }
    }
     
    /// <summary>
    /// 双缓冲ListView ，解决闪烁
    /// 使用方法是在ListView 所在窗体的InitializeComponent方法中，更改控件类型实例化语句将
    /// this.listView1 = new System.Windows.Forms.ListView();    屏蔽掉， 添加下面语句即可
    /// this.listView1 = new DoubleBufferListView();
    /// </summary>
    class DoubleBufferListView : ListView
    {
        public DoubleBufferListView()
        {
            SetStyle(ControlStyles.DoubleBuffer | ControlStyles.OptimizedDoubleBuffer | ControlStyles.AllPaintingInWmPaint, true);
            UpdateStyles();
        }
    }

方法二  
直接写一个扩展方法，使用反射，直接上代码，将此类定义给DataGirdView或ListView所在的窗体类外面即可

public static class DoubleBufferDataGridView
    {
        /// <summary>
        /// 双缓冲，解决闪烁问题
        /// </summary>
        /// <param name="dgv"></param>
        /// <param name="flag"></param>
        public static void DoubleBufferedDataGirdView(this DataGridView dgv, bool flag)
        {
            Type dgvType = dgv.GetType();
            PropertyInfo pi = dgvType.GetProperty("DoubleBuffered", BindingFlags.Instance | BindingFlags.NonPublic);
            pi.SetValue(dgv, flag, null);
        }
    }
     
    public static class DoubleBufferListView
    {
        /// <summary>
        /// 双缓冲，解决闪烁问题
        /// </summary>
        /// <param name="lv"></param>
        /// <param name="flag"></param>
        public static void DoubleBufferedListView(this  ListView lv, bool flag)
        {
            Type lvType = lv.GetType();
            PropertyInfo pi = lvType.GetProperty("DoubleBuffered",
                BindingFlags.Instance | BindingFlags.NonPublic);
            pi.SetValue(lv, flag, null);
        }
     
    }
     
    //调用方法
    public Form1()
    {
        InitializeComponent();
        DataGridView1.DoubleBufferedDataGirdView(true);
    }