GridView2

1、镶套(在GridView里镶套BulletedList)
     private   SqlDataReader read( string  id)
    
{
        SqlConnection mycon 
= new SqlConnection(ConfigurationManager.ConnectionStrings["pubconn"].ToString());
        mycon.Open();
        SqlCommand cmd 
= new SqlCommand("select title from titles where pub_id='" + id + "'", mycon);
        
return cmd.ExecuteReader(CommandBehavior.CloseConnection);
        
    }

    
protected   void  GridView1_RowDataBound( object  sender, GridViewRowEventArgs e)
    
{
        
foreach (GridViewRow gvr in GridView1.Rows)
        
{
            
string id = gvr.Cells[0].Text;
            BulletedList bl 
= (BulletedList)gvr.Cells[2].FindControl("bl1");
            bl.DataSource 
= read(id);
            bl.DataTextField 
= "title";
            bl.DataBind();
        }

    }
重点: return  cmd.ExecuteReader(CommandBehavior.CloseConnection);  关闭连接
             
2、手工实现编辑、更新全部记录
  protected   void  Button1_Click( object  sender, EventArgs e)
    
{
        GridView1.Columns[
1].Visible = false;
        GridView1.Columns[
2].Visible = true;
    }

    
protected   void  Button2_Click( object  sender, EventArgs e)
    
{
        
for (int i = 0; i < GridView1.Rows.Count; i++)
        
{
            
string id = GridView1.Rows[i].Cells[0].Text;
            
string name = ((TextBox)GridView1.Rows[i].Cells[2].FindControl("textbox1")).Text;
            SqlConnection mycon 
= new SqlConnection(ConfigurationManager.ConnectionStrings["mydbcon"].ToString());
            mycon.Open();
            SqlCommand cmd 
= new SqlCommand("update test set 姓名='" + name + "' where 学号='" + id + "'",mycon);
            cmd.ExecuteNonQuery();
        }

        GridView1.Columns[
1].Visible = true;
        GridView1.Columns[
2].Visible = false;

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