c# dataGridView

c# dataGridView

namespace  MyForm
{
     public  partial  class  TeacherListForm : Form
    {
         private  DataSet dataSet  =   new  DataSet();  //  声名并初始化　dataSet
         private  OracleDataAdapter dataAdapter;  //  声明　dataadapter

         public  TeacherListForm()
        {
            InitializeComponent();
        }

         private   void  TeacherListForm_Load( object  sender, EventArgs e)
        {
             string  sql  =   " SELECT ID,login_name,PASSWORD,status,name,gender,phone,email,address,grade,class,is_using,to_char(create_time,'yyyy-mm-dd hh24:mi') createTime,to_char(update_time,'yyyy-mm-dd hh24:mi') updateTime,remark FROM t_vs_student  " ;
            dataAdapter  =   new  OracleDataAdapter(sql, DBHelper.connection);

            dataAdapter.Fill(dataSet,  " t_vs_student " );
             this .dgvTeacher.DataSource = dataSet.Tables[ " t_vs_student " ];
        }

         private   void  btnColseSearchTeacher_Click( object  sender, EventArgs e)
        {
             this .Close();
        }

         private   void  btnSaveTeacher_Click( object  sender, EventArgs e)
        {
            DialogResult result  =  MessageBox.Show( " 您确实要将修改保存到数据库吗？ " ,  " 操作提示 " , MessageBoxButtons.OKCancel, MessageBoxIcon.Question);
             if  (result  ==  DialogResult.OK)
            {
                OracleCommandBuilder builder  =   new  OracleCommandBuilder(dataAdapter);
                dataAdapter.Update(dataSet,  " t_vs_student " );
            }
        }
    }
}