dev GridControl实现拖拽

一、示例说明

　　以gridControl1和gridControl2为例，从gridControl1拖拽行到gridControl2中去。

二、属性设置

gridControl2.AllowDrop = true;
            gridControl1.AllowDrop = true;

三、事件代码：分别为GridControl和gridview添加下列事件

#region Grid拖拽操作

        GridHitInfo GriddownHitInfo = null;

        #region 拖出
        private void gridView1_MouseDown(object sender, MouseEventArgs e)
        {
            GridView view = sender as GridView;
            GriddownHitInfo = null;
            GridHitInfo hitInfo = view.CalcHitInfo(new Point(e.X, e.Y));

            if (Control.ModifierKeys != Keys.None) return;
            if (e.Button == MouseButtons.Left && hitInfo.RowHandle >= )
            {
                GriddownHitInfo = hitInfo;
            }
        }

        private void gridView1_MouseMove(object sender, MouseEventArgs e)
        {
            GridView view = sender as GridView;
            if (e.Button == MouseButtons.Left && GriddownHitInfo != null)
            {
                Size dragSize = SystemInformation.DragSize;
                Rectangle dragRect = new Rectangle(new Point(GriddownHitInfo.HitPoint.X - dragSize.Width / ,
                    GriddownHitInfo.HitPoint.Y - dragSize.Height / ), dragSize);

                if (!dragRect.Contains(new Point(e.X, e.Y)))
                {
                    DataRow row = view.GetDataRow(GriddownHitInfo.RowHandle);
                    if (row != null)
                    {
                        view.GridControl.DoDragDrop(row, DragDropEffects.Move);
                        GriddownHitInfo = null;
                        DevExpress.Utils.DXMouseEventArgs.GetMouseArgs(e).Handled = true;
                    }
                }
            }
        }
        #endregion

        #region 拖入
        private void gridControl2_DragOver(object sender, DragEventArgs e)
        {

            if (e.Data.GetDataPresent(typeof(DataRow)))
                e.Effect = DragDropEffects.Move;
            else
                e.Effect = DragDropEffects.None;
        }

        private void gridControl2_DragEnter(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;
        }

        private void gridControl2_DragDrop(object sender, DragEventArgs e)
        {
            try
            {
                DataRow dr = e.Data.GetData(typeof(DataRow)) as DataRow;
                if (dr != null)
                {
                    FillTreeData(sender, dr);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("系统提示", ex.Message, MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        void FillTreeData(object sender, DataRow dr)
        {
            this.gridView2.AddNewRow();
            gridView2.SetFocusedRowCellValue("id", Guid.NewGuid().ToString());
            gridView2.SetFocusedRowCellValue("name", dr["name"].ToString());
            gridView2.SetFocusedRowCellValue("code", dr["code"].ToString());
        }
        #endregion

        #endregion

四、多行拖拽

1、属性

gridControl2.AllowDrop = true;
            gridControl1.AllowDrop = true;

设置gridview可以多行选择:  gridView1.OptionsSelection.MultiSelect = true;

2、事件代码 :所有的DataRow 变为 List<DataRow>

        #region Grid拖拽操作

        GridHitInfo GriddownHitInfo = null;
        #region 拖入
        private void gridControl2_DragOver(object sender, DragEventArgs e)
        {
            if (e.Data.GetDataPresent(typeof(List<DataRow>)))
                e.Effect = DragDropEffects.Move;
            else
                e.Effect = DragDropEffects.None;
        }

        private void gridControl2_DragEnter(object sender, DragEventArgs e)
        {
            e.Effect = DragDropEffects.Move;

        }

        private void gridControl2_DragDrop(object sender, DragEventArgs e)
        {
            try
            {
                List<DataRow> drs = e.Data.GetData(typeof(List<DataRow>)) as List<DataRow>;
                if (drs != null)
                {
                    FillTreeData(sender, drs);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("系统提示", ex.Message, MessageBoxButtons.OK, MessageBoxIcon.Error);
            }
        }

        void FillTreeData(object sender, List<DataRow> drs)
        {
            foreach (DataRow dr in drs)
            {
                this.gridView2.AddNewRow();
                gridView2.SetFocusedRowCellValue("id", Guid.NewGuid().ToString());
                gridView2.SetFocusedRowCellValue("name", dr["name"].ToString());
                gridView2.SetFocusedRowCellValue("code", dr["code"].ToString());
            }
        }
        #endregion

        #region 拖出
        private void gridView1_MouseDown(object sender, MouseEventArgs e)
        {
            GridView view = sender as GridView;
            GriddownHitInfo = null;
            GridHitInfo hitInfo = view.CalcHitInfo(new Point(e.X, e.Y));

            if (Control.ModifierKeys != Keys.None) return;
            if (e.Button == MouseButtons.Left && hitInfo.RowHandle >= )
            {
                GriddownHitInfo = hitInfo;
            }
        }

        private void gridView1_MouseMove(object sender, MouseEventArgs e)
        {
            GridView view = sender as GridView;
            if (e.Button == MouseButtons.Left && GriddownHitInfo != null)
            {
                Size dragSize = SystemInformation.DragSize;
                Rectangle dragRect = new Rectangle(new Point(GriddownHitInfo.HitPoint.X - dragSize.Width / ,
                    GriddownHitInfo.HitPoint.Y - dragSize.Height / ), dragSize);

                if (!dragRect.Contains(new Point(e.X, e.Y)))
                {
                    int[] rowint = view.GetSelectedRows();
                    List<DataRow> row = new List<DataRow>();
                    foreach (int i in rowint)
                    {
                        row.Add(view.GetDataRow(i));
                    }
                    if (row != null && row.Count > )
                    {
                        view.GridControl.DoDragDrop(row, DragDropEffects.Move);
                        GriddownHitInfo = null;
                        DevExpress.Utils.DXMouseEventArgs.GetMouseArgs(e).Handled = true;
                    }
                }
            }
        }
        #endregion
        #endregion