datagridview的查询分页

2021-03-25 17:26

阅读:387

标签:lse   style   初始   str   dataset   tar   message   输入   bsp   

/首次加载  private void button1_Click(object sender, EventArgs e)    

     {             //查询();     

    }     

    //定义每页多少条pagesize 要查询页码currentpage 总共多少页pagecount 总共条数datasize

        int pagesize = 10;         int currentpage = 1;        

//int pagecount = 0;(datasize-1) / pagesize + 1)      

   int datasize = 0;       

  //查询 每页条数pagesize 要查询页码       

  private void query(int pagesize,int currentpage)      

   {             con.Open();           

  SqlDataAdapter sqlda = new SqlDataAdapter("select top " + pagesize + "id, 修改人,操作名称,名称编号,物品名称,规格,种类,库存底线,库存上线,初始数量,初始价格,初始金额,给车间成本价,存放位置,备注,当前存量,检验类型,产品来源,供应商编号,供应商,采购策略,品牌,计量单位,仓库,辅助单位,初始值,现存量,颜色,采购周期,具体用途,质量要求,使用部门,图片,供应商简称,主辅 from 物品名称日志表  where id not in(select top " + pagesize * (currentpage - 1) + " id  from 物品名称日志表 order by id desc )order by id desc ", con);        

     DataSet ds = new DataSet();          

   sqlda.Fill(ds);         

    this.dataGridView1.DataSource = ds.Tables[0].DefaultView;          

   this.dataGridView1.Columns[0].HeaderCell.Style.ForeColor = Color.Red;         

    con.Close();         }    

    //首次加载查询     

    public void 查询()     

    {                         con.Open();      

       //得出总条数       

      SqlDataAdapter sqlda = new SqlDataAdapter("select 修改人,操作名称,名称编号,物品名称,规格,种类,库存底线,库存上线,初始数量,初始价格,初始金额,给车间成本价,存放位置,备注,当前存量,检验类型,产品来源,供应商编号,供应商,采购策略,品牌,计量单位,仓库,辅助单位,初始值,现存量,颜色,采购周期,具体用途,质量要求,使用部门,图片,供应商简称,主辅 from 物品名称日志表 order by id desc ", con);                         DataSet ds1 = new DataSet();        

     sqlda.Fill(ds1);       

      datasize = ds1.Tables[0].Rows.Count;  

           con.Close();       

      currentpage = 1;      

       query(pagesize, currentpage);          

   this.第几页.Text = "1";                      

   this.共几页.Text = ((datasize - 1) / pagesize + 1).ToString();

            query(pagesize,currentpage);            

    }        

private void 首页_Click(object sender, EventArgs e)       

  {             currentpage = 1;             query(pagesize, currentpage);             this.第几页.Text = "1";                     }

  private void 上一页_Click(object sender, EventArgs e)    

     {       

      if (int.Parse(this.第几页.Text.Trim()) == 1)             {                 MessageBox.Show("已经是第一页了,到家了");             }     

        else             {

                currentpage = int.Parse(this.第几页.Text.Trim()) - 1;                 query(pagesize, currentpage);                 this.第几页.Text = currentpage.ToString();    

              }

        }

        private void 下一页_Click(object sender, EventArgs e)    

     {             if (int.Parse(this.第几页.Text.Trim()) == ((datasize - 1) / pagesize + 1))    

           {          

       MessageBox.Show("已经是最后一页了,到家了");         

      }      

       else             {

                currentpage = int.Parse(this.第几页.Text.Trim())+1;                 query(pagesize, currentpage);                              this.第几页.Text = currentpage.ToString();        

             }      

   }

        private void 未页_Click(object sender, EventArgs e)      

   {             if (currentpage == ((datasize-1) / pagesize + 1))         

          {             

      MessageBox.Show("已经是最后一页了,到家了");          

          }        

     else       {

                currentpage = (datasize - 1) / pagesize + 1;                 query(pagesize, currentpage);                 this.第几页.Text = ((datasize - 1) / pagesize + 1).ToString();       

                   }

     }

        private void 跳转_Click(object sender, EventArgs e)     

   {             //正整数正则          System.Text.RegularExpressions.Regex reg1 = new System.Text.RegularExpressions.Regex(@"^[0-9]\d*$");               

         if(reg1.IsMatch(this.跳.Text.Trim().ToString()))    

         {                 if(int.Parse(this.跳.Text.Trim())>((datasize-1) / pagesize + 1))        

           {                  MessageBox.Show("请输入正确的数字");                  return;                 }else              

         {               

              //跳转到某页        

                 currentpage = int.Parse(this.跳.Text.Trim());          

                query(pagesize, currentpage);                         

               this.第几页.Text = currentpage.ToString();                             

          }           

        }            

      else

        {   

                MessageBox.Show("请输入正确的数字");             return;           

          }        

}

datagridview的查询分页

标签:lse   style   初始   str   dataset   tar   message   输入   bsp   

原文地址:https://www.cnblogs.com/footmarkofspring/p/9403393.html

上一篇:TestLink-Windows安装教程

下一篇:RESTful API


评论


亲,登录后才可以留言!