转自http://hi.baidu.com/zouqiner/blog/item/3890f363d0e37ad5e6113a56.html
注意里面所有的事件都是两个datagridview都需要挂上~才能实现拖动，转载请注明
欢迎更多热爱.net 的朋友一起探讨研究。
界面样式：
源码:
using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;
namespace WindowsApplication1{ public partial class Form3 : Form { public Form3() { InitializeComponent(); }
private int selectionIdx = 0;
private void Form3_Load(object sender, EventArgs e) { DataSet ds = new DataSet(); ds.Tables.Add("table1"); ds.Tables[0].Columns.Add("code"); ds.Tables[0].Columns.Add("desc"); ds.Tables[0].Rows.Add(new object[] { "1", "aaa" }); ds.Tables[0].Rows.Add(new object[] { "2", "bbb" });
DataSet ds2 = new DataSet(); ds2.Tables.Add("table1"); ds2.Tables[0].Columns.Add("code"); ds2.Tables[0].Columns.Add("desc"); ds2.Tables[0].Rows.Add(new object[] { "3", "ccc" }); ds2.Tables[0].Rows.Add(new object[] { "4", "ddd" });
dataGridView1.DataSource = ds.Tables[0]; dataGridView2.DataSource = ds2.Tables[0]; }
DataRow dr = null; DataGridViewRow dgvr = null;
private void dataGridView1_DragDrop(object sender, DragEventArgs e) { try { if (dr != null) { DataGridView dgv = sender as DataGridView; string strTemp = dgv.Name; int idx = GetRowFromPoint(e.X, e.Y, dgv); if (idx < 0) idx = dgv.Rows.Count; if (e.Data.GetDataPresent(typeof(DataGridViewRow))) { ((DataTable)dgv.DataSource).Rows.InsertAt(dr, idx); selectionIdx = idx; } } } catch (Exception ex) { MessageBox.Show(ex.Message); } } private void dataGridView1_DragOver(object sender, DragEventArgs e) { try { DataGridView dgv = sender as DataGridView; string strTemp = dgv.Name;
dgvr = (DataGridViewRow)e.Data.GetData(typeof(DataGridViewRow));
dr = ((DataTable)dgv.DataSource).NewRow(); for (int i = 0; i < dgvr.Cells.Count; i++) { dr[i] = dgvr.Cells[i].Value; } } catch (Exception ex) { MessageBox.Show(ex.Message); }
}
private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e) { try {
if (e.RowIndex > 0) selectionIdx = e.RowIndex; } catch (Exception ex) { MessageBox.Show(ex.Message); }
}
private int GetRowFromPoint(int x, int y,DataGridView dgv) {
for (int i = 0; i < dgv.RowCount; i++) { Rectangle rec = dgv.GetRowDisplayRectangle(i, false);
if (dgv.RectangleToScreen(rec).Contains(x, y)) return i; }
return -1; }
private void dataGridView1_SelectionChanged(object sender, EventArgs e) { try { DataGridView dgv = sender as DataGridView; if ((dgv.Rows.Count > 0) && (dgv.SelectedRows.Count > 0)) {
if (dgv.Rows.Count <= selectionIdx) selectionIdx = dgv.Rows.Count - 1; dgv.Rows[selectionIdx].Selected = true; dgv.CurrentCell = dgv.Rows[selectionIdx].Cells[0]; } } catch (Exception ex) { MessageBox.Show(ex.Message); } }
private void dataGridView1_DragEnter(object sender, DragEventArgs e) { e.Effect = DragDropEffects.Move; }
private void dataGridView1_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e) { try { DataGridView dgv = sender as DataGridView; string strTemp = dgv.Name; if ((e.Clicks < 2) && (e.Button == MouseButtons.Left)) { if ((e.ColumnIndex == -1) && (e.RowIndex > -1)) {
DragDropEffects dd = dgv.DoDragDrop(dgv.Rows[e.RowIndex], DragDropEffects.Move);
if (dd == DragDropEffects.Move && dgvr != null) { dgv.Rows.Remove(dgvr); dgvr = null; dr = null; }
} } } catch (Exception ex) { MessageBox.Show(ex.Message); } }
}}
转载于:https://www.cnblogs.com/Mblog/archive/2010/01/05/1639637.html
