伪代码
 private void toolStripMenuItem2_Click(object sender, EventArgs e)
        {
          dataGridViewFuture
            dataGridView1.DataSource = db.ExecuteDataView(sqlDataFuture);
        }
解决方案
100
上面有问题,这样才对
if (this.dataGridView1.SelectedRows.Count > 0)   
{                               
 //遍历所选中的dataGridView记录行                       
foreach (DataGridViewRow row in this.dataGridView1.SelectedRows)                      
 {                                        
//取dataGridView1中的第一列的值                           
string id= row.Cells[0].Value.ToString();                           
string sql = "delete  tb   where id="+id+"";                         
 db.ExecuteNonQuery(sql); 
 } 
}