右键删除行

右键

ContextMenustrip

删除行

DataGridview1.Rows.RemoveAt（行索引值）；

private void Form1_Load(object sender, EventArgs e)
        {
            string constr = "server=192.168.100.222;uid=sa;pwd=p@ssw1rd;database=pwd1";
            SqlConnection mycon = new SqlConnection(constr);
            DataTable mytb = new System.Data.DataTable();
            mycon.Open();
            SqlDataAdapter mydapt = new SqlDataAdapter("select * from book",mycon);
            mydapt.Fill(mytb);

            dataGridView1.DataSource = mytb;

        }
        //鼠标键抬起时
        privatevoiddataGridView1_CellMouseUp(objectsender,DataGridViewCellMouseEventArgs e)
        {
            if (e.Button==MouseButtons.Right)
            {
                //右键选择当前行
                this.dataGridView1.Rows[e.RowIndex].Selected = true;
                //当前单元格唯一
                this.dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[0];
                //显示右键菜单（在datagridview中的e.location位置显示）
                this.contextMenuStrip1.Show(dataGridView1,e.Location);
                //显示右键菜单在鼠标的位置显示
                this.contextMenuStrip1.Show(Cursor.Position);
            }
            
        }

右键删除行.
        private void Form1_Load(object sender, EventArgs e)
        {
            string constr = "server=192.168.100.222;uid=sa;pwd=p@ssw1rd;database=pwd1";
            SqlConnection mycon = new SqlConnection(constr);
            DataTable mytb = new System.Data.DataTable();
            mycon.Open();
            SqlDataAdapter mydapt = new SqlDataAdapter("select * from book",mycon);
            mydapt.Fill(mytb);

            dataGridView1.DataSource = mytb;

        }
        //鼠标键抬起时
        private void dataGridView1_CellMouseUp(object sender, DataGridViewCellMouseEventArgs e)
        {
            if (e.Button==MouseButtons.Right)
	        {
                //右键选择当前行
                this.dataGridView1.Rows[e.RowIndex].Selected = true;
                //当前单元格唯一
                this.dataGridView1.CurrentCell = dataGridView1.Rows[e.RowIndex].Cells[0];
                //显示右键菜单（在datagridview中的e.location位置显示）
                this.contextMenuStrip1.Show(dataGridView1,e.Location);
                //显示右键菜单在鼠标的位置显示
                this.contextMenuStrip1.Show(Cursor.Position);
	        }
            
        }