dev gridview拖拽數據移動

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

 

private BindingList<T> DataSource;
//dvginfo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; private void frmToExcelModel_Load(object sender, EventArgs e) { Init(); dvginfo.AllowDrop = true; // 確保能夠拖拽
 DataSource = new BindingList<T>(); 
 dvginfo.DataSource =DataSource; 

 }

 

private void gridView1_CustomDrawRowIndicator(object sender, DevExpress.XtraGrid.Views.Grid.RowIndicatorCustomDrawEventArgs e)
        {
            e.Appearance.TextOptions.HAlignment = DevExpress.Utils.HorzAlignment.Far;
            if (e.Info.IsRowIndicator)
            {
                if (e.RowHandle >= 0)
                {
                    e.Info.DisplayText = (e.RowHandle + 1).ToString();
                }
                else if (e.RowHandle < 0 && e.RowHandle > -1000)
                {
                    e.Info.Appearance.BackColor = System.Drawing.Color.AntiqueWhite;
                    e.Info.DisplayText = "G" + e.RowHandle.ToString();
                }
            }
        }

 #region 數據源拖拽
        private void dvginfo_MouseDown(object sender, MouseEventArgs e)
        {
            downHitInfo = gridView1.CalcHitInfo(new Point(e.X, e.Y));
        }

        private void dvginfo_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<ColunmData> linemodels = new List<ColunmData>();
            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);
                linemodels.Add(DataSouse[dataSourcerows]);
            }
            dvginfo.DoDragDrop(linemodels, DragDropEffects.Move);//開始拖放操作。

        }
        //拖拽過程事件     
        private void dvginfo_DragOver(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;
        }
        //拖拽完成后事件  
        private void dvginfo_DragDrop(object sender, DragEventArgs e)
        {
            //獲取鼠標在屏幕上的位置。
            Point gridviewPoint = this.PointToScreen(this.dvginfo.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<ColunmData> row = e.Data.GetData(typeof(List<ColunmData>)) as List<ColunmData>;  //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 = DataSouse.IndexOf(row[0]);
                ColunmData xs = DataSouse[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++)
                        DataSouse.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 = DataSouse.IndexOf(xs);
                    else
                        a = DataSouse.IndexOf(xs) + 1;
                    for (int i = 0; i < row.Count; i++)
                    {
                        DataSouse.Insert(a + i, row[i]);
                        gridView1.SelectRow(a + i);
                    }
                    gridView1.FocusedRowHandle = a;
                }
            }
            dvginfo.DataSource = DataSouse;
            gridView1.RefreshData();
        }
        #endregion