asp.net 查询sql数据表的网页模板

最近因为工作需求，要制作一个网页模板，主要是用于快速开发，可以查询Sql数据表信息的模板，

昨天做好了，这个只是一个Demo，但是功能已经齐全了，

开发新的网站时，需要新增一个xml，复制粘贴网页的前端和后台，注意，前端的样式和逻辑还是要分开写的。

这样，基本上在10分钟以内，就能开发一个新的网页（只有核心的查询功能）。

这是效果图：

下面记录一下这个Demo：

首先是要在Web项目的web.config中配置数据库的连接字符串和xml文件名：

 <appSettings>
     <add key="xmlDir" value="xml"/>
   </appSettings>
   <connectionStrings>
     <add name="connStr" connectionString="Data Source=10.76.25.XX;DATABASE=XXX;Persist Security Info=True;User ID=sa;Password=XXXXXX;Max Pool Size=300;" providerName="System.Data.SqlClient"/>
 </connectionStrings>

接着，我有做好了一个帮助类QueryHelper：

 using System;
 using System.Collections.Generic;
 using System.Configuration;
 using System.Data;
 using System.Data.SqlClient;
 using System.IO;
 using System.Web.UI;
 using System.Web.UI.HtmlControls;
 using System.Web.UI.WebControls;
 using System.Xml.Linq;

 namespace Cong.Utility
 {
     public delegate void DelegatePageIndexChange(object obj, GridViewPageEventArgs e);

     public class QueryHelper
     {
         private string xmlName { get; set; }
         private Page page { get; set; }
         private GridView gv { get; set; }

         private DelegatePageIndexChange dele;

         public QueryHelper(string xmlName, Page page, DelegatePageIndexChange dele)
         {
             this.xmlName = xmlName;
             this.page = page;
             this.gv = page.FindControl("gv") as GridView;
             this.dele = dele;

             gv.PageIndexChanging += Gv_PageIndexChanging;
         }

         public void BindData(object objIndex)
         {
             var xmlDir = ConfigurationManager.AppSettings["xmlDir"];
             //获取xml节点
             string path = AppDomain.CurrentDomain.BaseDirectory + (xmlDir == null ? "" : (xmlDir.ToString() + "\\")) + xmlName;
             if (!File.Exists(path))
                 throw new Exception("xml is not exist.");

             XDocument xdoc = XDocument.Load(path);
             XElement root = xdoc.Root;

             //获取基本查询语句的变量
             string tableName = root.Element("tableName").Value;
             string topNumber = root.Element("top").Value;

             //拼接where条件语句
             List<string> conditions = new List<string>();
             List<SqlParameter> ps = new List<SqlParameter>();
             foreach (var ele in root.Element("field").Elements())
             {
                 if (ele.Element("search").Value.Equals(""))
                 {
                     HtmlInputText tb = page.FindControl("search_" + ele.Name.ToString()) as HtmlInputText;
                     if (tb == null)
                         continue;

                     if (!tb.Value.Trim().Equals(""))
                     {
                         conditions.Add(string.Format("{0} like '%'+@{0}+'%'", ele.Name.ToString()));
                         ps.Add(new SqlParameter("@" + ele.Name.ToString(), tb.Value.Trim()));
                     }
                 }
             }
             //是否有删除标识
             foreach (var ele in root.Element("flag").Elements())
             {
                 if (ele.Value.Equals(""))
                     conditions.Add(ele.Name + " " + ele.Value);
             }
             string strWhere = "";
             if (conditions.Count > )
                 strWhere = "where " + string.Join(" and ", conditions.ToArray());

             //拼接sort条件语句
             List<string> sorts = new List<string>();
             foreach (var ele in root.Element("sorts").Elements())
             {
                 sorts.Add(ele.Element("field").Value + " " + ele.Element("type").Value);
             }
             string strOrderBy = "";
             if (sorts.Count > )
                 strOrderBy = "order by " + string.Join(",", sorts.ToArray());

             //拼接sql语句
             string sql = string.Format("select top {0} * from {1} {2} {3}", topNumber, tableName, strWhere, strOrderBy);
             DataTable dt = SqlHelper.ExecuteDataTable(sql, ps);

             BindGV(dt, root, objIndex);
         }

         public void BindGV(DataTable dt, XElement root, object objIndex)
         {
             gv.DataSource = null;
             gv.Columns.Clear();
             gv.AutoGenerateColumns = false;
             gv.AllowPaging = true;
             gv.PageSize = int.Parse(root.Element("pageSize").Value);

             BoundField gvColumn = null;
             foreach (var ele in root.Element("field").Elements())
             {
                 if (ele.Element("visible").Value.Equals(""))
                 {
                     gvColumn = new BoundField();
                     gvColumn.HeaderText = ele.Element("cn").Value;
                     gvColumn.DataField = ele.Name.ToString();
                     gv.Columns.Add(gvColumn);
                     gvColumn = null;
                 }
             }

             gv.DataSource = dt;
             gv.PageIndex = objIndex == null ?  : Convert.ToInt32(objIndex);
             gv.DataBind();
         }

         private void Gv_PageIndexChanging(object sender, GridViewPageEventArgs e)
         {
             dele(sender, e);
             BindData(e.NewPageIndex);
         }
     }
 }

然后，是SqlHelper，这个就不放出来了，以前也发过。

接着创建一个xml，我是放在项目主目录下的“xml”文件夹内，内容如下：

 <?xml version="1.0" encoding="utf-8" ?>
 <root>
   <tableName>V_121_LOT_LIST</tableName>
   <top>100</top>
   <field>
     <lot_id>
       <cn>Id</cn>
       <visible>0</visible>
       <search>0</search>
     </lot_id>
     <lot_code>
       <cn>批号</cn>
       <visible>0</visible>
       <search>0</search>
     </lot_code>
     <plan_qty>
       <cn>生产数量</cn>
       <visible>1</visible>
       <search>1</search>
     </plan_qty>
     <now_qty>
       <cn>当前数量</cn>
       <visible>0</visible>
       <search>1</search>
     </now_qty>
   </field>
   <flag>
     <state_flg>1</state_flg>
     <del_flg>1</del_flg>
   </flag>
   <sorts>
     <sort>
       <field>lot_id</field>
       <type>desc</type>
     </sort>
   </sorts>
   <pageSize>20</pageSize>
 </root>

最后，创建一个WebForm.aspx，

下面分别是后台和前端的代码：

 using Cong.Utility;
 using System;
 using System.Web.UI.WebControls;

 namespace QueryTemplet
 {
     public partial class lot : System.Web.UI.Page
     {
         private static string xmlName = "lot.xml";

         protected QueryHelper qh = null;

         protected void Page_Load(object sender, EventArgs e)
         {
             qh = new QueryHelper(xmlName, this, Gv_PageIndexChanging);
             qh.BindData(ViewState["pageIndex"]);
         }

         private void Gv_PageIndexChanging(object sender, GridViewPageEventArgs e)
         {
             ViewState["pageIndex"] = e.NewPageIndex;
         }

         protected void btnSearch_Click(object sender, EventArgs e)
         {
             qh.BindData(ViewState["pageIndex"]);
         }
     }
 }

 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="lot.aspx.cs" Inherits="QueryTemplet.lot" %>

 <!DOCTYPE html>

 <html xmlns="http://www.w3.org/1999/xhtml">
 <head runat="server">
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <title></title>
 </head>
 <body>
     <form id="form1" runat="server">
         <div>
             Id：<input type="text" id="search_lot_id" runat="server" />
             批号：<input type="text" id="search_lot_code" runat="server" />
             <br />
             <asp:Button Text="查找" ID="btnSearch" runat="server" OnClick="btnSearch_Click" />
         </div>
         <div>
             <asp:GridView ID="gv" runat="server">
             </asp:GridView>
         </div>
     </form>
 </body>
 </html>

前端的代码，自己再套上样式和编写js代码就可以使用了。

最后，也放出另一个效果图，我做好这个新的页面，只复制粘贴了几分钟。

就这些，欢迎交流。

源码下载：http://download.csdn.net/detail/cycong108/9739562