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：

1 <appSettings>
2     <add key="xmlDir" value="xml"/>
3   </appSettings>
4   <connectionStrings>
5     <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"/>
6 </connectionStrings>

接着，我有做好了一个帮助类QueryHelper：

1 using System;
2 using System.Collections.Generic;
3 using System.Configuration;
4 using System.Data;
5 using System.Data.SqlClient;
6 using System.IO;
7 using System.Web.UI;
8 using System.Web.UI.HtmlControls;
9 using System.Web.UI.WebControls;
10 using System.Xml.Linq;
11
12 namespace Cong.Utility
13 {
14     public delegate void DelegatePageIndexChange(object obj, GridViewPageEventArgs e);
15
16     public class QueryHelper
17     {
18         private string xmlName { get; set; }
19         private Page page { get; set; }
20         private GridView gv { get; set; }
21
22         private DelegatePageIndexChange dele;
23
24         public QueryHelper(string xmlName, Page page, DelegatePageIndexChange dele)
25         {
26             this.xmlName = xmlName;
27             this.page = page;
28             this.gv = page.FindControl("gv") as GridView;
29             this.dele = dele;
30
31             gv.PageIndexChanging += Gv_PageIndexChanging;
32         }
33
34         public void BindData(object objIndex)
35         {
36             var xmlDir = ConfigurationManager.AppSettings["xmlDir"];
37             //获取xml节点
38             string path = AppDomain.CurrentDomain.BaseDirectory + (xmlDir == null ? "" : (xmlDir.ToString() + "\\")) + xmlName;
39             if (!File.Exists(path))
40                 throw new Exception("xml is not exist.");
41
42             XDocument xdoc = XDocument.Load(path);
43             XElement root = xdoc.Root;
44
45             //获取基本查询语句的变量
46             string tableName = root.Element("tableName").Value;
47             string topNumber = root.Element("top").Value;
48
49             //拼接where条件语句
50             List<string> conditions = new List<string>();
51             List<SqlParameter> ps = new List<SqlParameter>();
52             foreach (var ele in root.Element("field").Elements())
53             {
54                 if (ele.Element("search").Value.Equals("0"))
55                 {
56                     HtmlInputText tb = page.FindControl("search_" + ele.Name.ToString()) as HtmlInputText;
57                     if (tb == null)
58                         continue;
59
60                     if (!tb.Value.Trim().Equals(""))
61                     {
62                         conditions.Add(string.Format("{0} like '%'+@{0}+'%'", ele.Name.ToString()));
63                         ps.Add(new SqlParameter("@" + ele.Name.ToString(), tb.Value.Trim()));
64                     }
65                 }
66             }
67             //是否有删除标识
68             foreach (var ele in root.Element("flag").Elements())
69             {
70                 if (ele.Value.Equals("0"))
71                     conditions.Add(ele.Name + " " + ele.Value);
72             }
73             string strWhere = "";
74             if (conditions.Count > 0)
75                 strWhere = "where " + string.Join(" and ", conditions.ToArray());
76
77             //拼接sort条件语句
78             List<string> sorts = new List<string>();
79             foreach (var ele in root.Element("sorts").Elements())
80             {
81                 sorts.Add(ele.Element("field").Value + " " + ele.Element("type").Value);
82             }
83             string strOrderBy = "";
84             if (sorts.Count > 0)
85                 strOrderBy = "order by " + string.Join(",", sorts.ToArray());
86
87             //拼接sql语句
88             string sql = string.Format("select top {0} * from {1} {2} {3}", topNumber, tableName, strWhere, strOrderBy);
89             DataTable dt = SqlHelper.ExecuteDataTable(sql, ps);
90
91             BindGV(dt, root, objIndex);
92         }
93
94         public void BindGV(DataTable dt, XElement root, object objIndex)
95         {
96             gv.DataSource = null;
97             gv.Columns.Clear();
98             gv.AutoGenerateColumns = false;
99             gv.AllowPaging = true;
100             gv.PageSize = int.Parse(root.Element("pageSize").Value);
101
102             BoundField gvColumn = null;
103             foreach (var ele in root.Element("field").Elements())
104             {
105                 if (ele.Element("visible").Value.Equals("0"))
106                 {
107                     gvColumn = new BoundField();
108                     gvColumn.HeaderText = ele.Element("cn").Value;
109                     gvColumn.DataField = ele.Name.ToString();
110                     gv.Columns.Add(gvColumn);
111                     gvColumn = null;
112                 }
113             }
114
115             gv.DataSource = dt;
116             gv.PageIndex = objIndex == null ? 0 : Convert.ToInt32(objIndex);
117             gv.DataBind();
118         }
119
120         private void Gv_PageIndexChanging(object sender, GridViewPageEventArgs e)
121         {
122             dele(sender, e);
123             BindData(e.NewPageIndex);
124         }
125     }
126 }

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：

1 <?xml version="1.0" encoding="utf-8" ?>
2 <root>
3   <tableName>V_121_LOT_LIST</tableName>
4   <top>100</top>
5   <field>
6     <lot_id>
7       <cn>Id</cn>
8       <visible>0</visible>
9       <search>0</search>
10     </lot_id>
11     <lot_code>
12       <cn>批号</cn>
13       <visible>0</visible>
14       <search>0</search>
15     </lot_code>
16     <plan_qty>
17       <cn>生产数量</cn>
18       <visible>1</visible>
19       <search>1</search>
20     </plan_qty>
21     <now_qty>
22       <cn>当前数量</cn>
23       <visible>0</visible>
24       <search>1</search>
25     </now_qty>
26   </field>
27   <flag>
28     <state_flg>1</state_flg>
29     <del_flg>1</del_flg>
30   </flag>
31   <sorts>
32     <sort>
33       <field>lot_id</field>
34       <type>desc</type>
35     </sort>
36   </sorts>
37   <pageSize>20</pageSize>
38 </root>

最后，创建一个WebForm.aspx，

下面分别是后台和前端的代码：

1 using Cong.Utility;
2 using System;
3 using System.Web.UI.WebControls;
4
5 namespace QueryTemplet
6 {
7     public partial class lot : System.Web.UI.Page
8     {
9         private static string xmlName = "lot.xml";
10
11         protected QueryHelper qh = null;
12
13         protected void Page_Load(object sender, EventArgs e)
14         {
15             qh = new QueryHelper(xmlName, this, Gv_PageIndexChanging);
16             qh.BindData(ViewState["pageIndex"]);
17         }
18
19         private void Gv_PageIndexChanging(object sender, GridViewPageEventArgs e)
20         {
21             ViewState["pageIndex"] = e.NewPageIndex;
22         }
23
24         protected void btnSearch_Click(object sender, EventArgs e)
25         {
26             qh.BindData(ViewState["pageIndex"]);
27         }
28     }
29 }

1 <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="lot.aspx.cs" Inherits="QueryTemplet.lot" %>
2
3 <!DOCTYPE html>
4
5 <html xmlns="http://www.w3.org/1999/xhtml">
6 <head runat="server">
7     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
8     <title></title>
9 </head>
10 <body>
11     <form id="form1" runat="server">
12         <div>
13             Id：<input type="text" id="search_lot_id" runat="server" />
14             批号：<input type="text" id="search_lot_code" runat="server" />
15             <br />
16             <asp:Button Text="查找" ID="btnSearch" runat="server" OnClick="btnSearch_Click" />
17         </div>
18         <div>
19             <asp:GridView ID="gv" runat="server">
20             </asp:GridView>
21         </div>
22     </form>
23 </body>
24 </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