datagridview的查询分页
2021-03-25 17:26
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
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