devpress 的gridview 控件的行拖拽 z

首先，添加引用：using DevExpress.XtraGrid.Views.Grid.ViewInfo; 

 

           gridControl1.AllowDrop = true; // 確保能夠拖拽

              gridView1.OptionsSelection.MultiSelect = true;     //確保能夠多選

            gridView1.OptionsSelection.EnableAppearanceFocusedCell = false; //確保選定行的背景色一樣。

            gridView1.OptionsBehavior.Editable = false;  

            gridView1.OptionsBehavior.ReadOnly = true;

           上述初始化最好放在賦數據源之前。否則數據一開始顯示的時候沒有選中行。

        //GridHitInfo根據鼠標點擊的x、y坐標獲取該點的相關信息

        private GridHitInfo downHitInfo;  

        private GridHitInfo upHitInfo;

觸發事件：

 

        //鼠標按下事件

        private void gridView1_MouseDown(object sender, MouseEventArgs e)
        {
            downHitInfo = gridView1.CalcHitInfo(new Point(e.X,e.Y));
        }

       //鼠標移動事件

        private void gridView1_MouseMove(object sender, MouseEventArgs e)        {
            if (e.Button != MouseButtons.Left) return;        //判斷是否是左鍵
            if (downHitInfo == null||downHitInfo.RowHandle <0) return;   //判斷按下的位置是否有值，是否是gridview 的Items.

             int[] rows =gridView1.GetSelectedRows();

             List<XESHI > row = new List<XESHI >();

             foreach (int r in rows)   // 獲取gridview 數據源中對應的信息。
             {

                 //根據 gridview 中的行索引獲取數據源中對應的是行索引
                 int dataSourcerows = gridView1.GetDataSourceRowIndex(r);

                 row.Add(asd[dataSourcerows]);
             }
             gridControl1.DoDragDrop(row, DragDropEffects.Move);//開始拖放操作。
        }

        private void gridControl1_DragDrop(object sender, DragEventArgs e)

        {

            //獲取鼠標在屏幕上的位置。
            Point gridviewPoint = this.PointToScreen (this.gridControl1.Location  );  
            //獲取 gridview 中對應的的位置（屏幕位置減去 gridView 開始位置）

            upHitInfo = gridView1.CalcHitInfo(new Point(e.X - gridviewPoint.X, e.Y - gridviewPoint.Y));  

              if (upHitInfo == null || upHitInfo.RowHandle < 0) return;

            //獲取釋放的位置列索引
            int endRow =gridView1.GetDataSourceRowIndex ( gridView1.GetDataSourceRowIndex(upHitInfo.RowHandle));   

           
            List<XESHI> row = e.Data.GetData(typeof(List<XESHI>)) as List<XESHI>;  //獲取要移動的數據

            if (row != null && row.Count > 0) //沒有移動的數據跳過
            {

                int a;

                //獲取移動列集合的第一列在數據源的索引

                int startRow = asd.IndexOf(row[0]); 

                XESHI xs = asd[endRow];

                if (!row.Contains(xs))  //如果多選的話，確保不能拖拽到這幾個里
                {
                    gridView1.ClearSelection();
                    //排序，先刪除后后添加，
                    for (int i = 0; i < row.Count; i++)
                        asd.Remove(row[i]);
                    //若果往上托，則加在鼠標到達行的上面

                    //如果往下拖，則加在鼠標到達行的下面
                    if (startRow > endRow)
                        a = asd.IndexOf(xs);
                    else
                        a = asd.IndexOf(xs) + 1;

                    for (int i = 0; i < row.Count; i++)
                    {
                        asd.Insert(a + i, row[i]);
                        gridView1.SelectRow(a + i);
                    }
                    gridView1.FocusedRowHandle = a;
                }

            }
            gridControl1.DataSource = asd;
            gridView1.RefreshData();
        }

 

 

        private void gridControl1_DragEnter(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;
        }

 

 

 

 

程序中用到的一些類：

 public class XESHI

    {

        public string Name { get; set; }

        public string Xinshui { get; set; }

    }

 List<XESHI> asd = new List<XESHI>();