xml学习（5）xml配置gridview列
互联网
17-2-23
有时候我们不确定我们gridview要显示那些列，或者我们希望可以动态配置gridview那些列显示,以及宽度，这时可以通过可以把列的消息存放的数据库，通过读取数据库实现动态绑定列，也可以通过配置xml实现，当然也可以第一次通过读取xml，然后向数据库插入列消息，然后下一次判断数据库是否已经存储了列数据，如果没有存入，那么读取xml。
下面我讲解如何通过xml如何动态绑定gridview
一效果：
二，核心代码：
1.读取xml文件，返回datatable
/// <summary> /// 获取xmltable /// </summary> /// <param name="xmlname">xml名字</param> /// <returns></returns> public DataTable getDTXML(string xmlname) { DataTable result = new DataTable(); string fileName = HttpContext.Current.Request.PhysicalApplicationPath + "\\Xml\\" + xmlname + ".xml";//xml的物理路径 XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(fileName); XmlNodeList xWitsTablesList = xmlDoc.SelectNodes("/config"); foreach (XmlNode xOracleNode in xWitsTablesList) { foreach (XmlNode node2 in xOracleNode.ChildNodes) { if (node2.Name == "Header") { // //绑定表头 foreach (XmlNode node3 in node2.Attributes) { result.Columns.Add(node3.Value); } } else { //数据行 int i = 0;//列标志 DataRow dr = result.NewRow(); foreach (XmlNode node4 in node2.Attributes) { dr[i] = node4.Value.ToString(); i++; } result.Rows.Add(dr); } } } return result; } /// <summary> /// 绑定gridview列 /// </summary> /// <param name="gv"></param> /// <param name="dt"></param> /// <param name="width"></param> /// <param name="columnNumber"></param> public void HtmlGridView(GridView gv,DataTable dt,int width,int columnNumber) { try { int k=0; if (dt.Rows.Count > 0) { foreach (DataRow dr in dt.Rows) { BoundField bf = new BoundField(); bf.HeaderText = dr["name"].ToString(); bf.DataField = dr["field_code"].ToString(); bf.HeaderStyle.Width = Convert.ToInt32(dr["width"].ToString()); bf.HeaderStyle.HorizontalAlign = HorizontalAlign.Center; bf.HeaderStyle.ForeColor = System.Drawing.Color.Black; bf.SortExpression = dr["name"].ToString(); gv.Columns.Add(bf); k+= Convert.ToInt32(dr["width"].ToString()); if (dr["width"].ToString()=="0") { gv.Columns[columnNumber].Visible = false; } columnNumber++; } gv.Width = k + width; } } catch(Exception ex) { throw new Exception(ex.Message); } }HtmlGridView.aspx源码：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="HtmlGridView.aspx.cs" Inherits="HtmlGridView" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>读取xml</title> <link rel="Stylesheet" type="text/css" href="Css/xmlReadOne.css" /> <link rel="Stylesheet" type="text/css" href="Css/Common/InputStyle.css" /> <script type="text/javascript" src="Scripts/jquery-1.4.1.min.js"></script> </head> <body> <form id="form1" runat="server"> <p> <p class="main"> <p class="list"> <asp:GridView runat="server" ID="gv_class" AutoGenerateColumns="False" DataKeyNames="ID" Width="100%" CellPadding="4" ForeColor="#333333" GridLines="None" > <AlternatingRowStyle BackColor="White" /> <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /> <HeaderStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="#FFCC66" ForeColor="#333333" HorizontalAlign="Center" /> <RowStyle BackColor="#FFFBD6" HorizontalAlign="Center" ForeColor="#333333" /> <SelectedRowStyle BackColor="#FFCC66" Font-Bold="True" ForeColor="Navy" /> <SortedAscendingCellStyle BackColor="#FDF5AC" /> <SortedAscendingHeaderStyle BackColor="#4D0000" /> <SortedDescendingCellStyle BackColor="#FCF6C0" /> <SortedDescendingHeaderStyle BackColor="#820000" /> <Columns> <asp:TemplateField HeaderText="NO"> <ItemTemplate> <%#Eval("NO") %> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> </p> </p> </p> </form> </body> <script type="text/javascript"> function add_clear() { $(".button").find("input[type=text] ").each(function () { $(this).val(''); }); } </script> </html>
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.IO; using System.Xml; using System.Web.UI.HtmlControls; using IsXMLUtility; using System.Data; public partial class HtmlGridView : System.Web.UI.Page { XmlHelper xmlHelper = new XmlHelper(); protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { //gv_class绑定列 DataTable dt = xmlHelper.getDTXML("表头"); Functions.getInstance().HtmlGridView(gv_class, dt, 10, 1); InitGV(); } } /// <summary> /// 绑定gridview /// </summary> private void InitGV() { DataTable dt = xmlHelper.getDTXML("内容", "NO", 1); this.gv_class.DataSource = dt.DefaultView; this.gv_class.DataBind(); } }<?xml version="1.0" encoding="utf-8" ?> <config> <Header col1="name" col2="field_code" col3="width" col4="dispaly" ></Header> <row col1="班级编号" col2="ID" col3="100" col4="true" ></row> <row col1="班级" col2="class" col3="100" col4="true" ></row> <row col1="班级名称" col2="class_name" col3="100" col4="true" ></row> <row col1="年级" col2="year" col3="100" col4="true" ></row> <row col1="学校" col2="school" col3="100" col4="true" ></row> <row col1="人数" col2="count" col3="100" col4="true" ></row> </config>
内容.xml
<?xml version="1.0" encoding="utf-8" ?> <config> <Header col1="ID" col2="class" col3="class_name" col4="year" col5="school" col6="count" ></Header> <row col1="一五班" col2="01" col3="实验班" col4="2013" col5="三峡高级中学" col6="20" ></row> <row col1="一六班" col2="02" col3="奥数班" col4="2013" col5="三峡高级中学" col6="25" ></row> <row col1="一六班" col2="03" col3="阳光班" col4="2013" col5="三峡高级中学" col6="69" ></row> </config>
body{ margin:0 auto; padding:0px; font-family:'宋体'; } .main { margin-left:20px; margin-top:10px; text-align:left; } .button { width:600px; border:#A8B7CC solid 1px; background-color:#FFFFFF; } .content { width:600px; border:#A8B7CC solid 1px; background-color:#E0EDFE; margin-top:20px; } .list { width:600px; height:300px; overflow:auto; border:#A8B7CC solid 1px; background-color:#FFFFFF; overflow: scroll; SCROLLBAR-FACE-COLOR:#E0EDFE; PADDING-BOTTOM: 0px; SCROLLBAR-HIGHLIGHT-COLOR: #ffffff; SCROLLBAR-SHADOW-COLOR: #cccccc; SCROLLBAR-3DLIGHT-COLOR:#ffffff; SCROLLBAR-ARROW-COLOR:#95AFD4; PADDING-TOP: 0px; SCROLLBAR-TRACK-COLOR: #ffffff; SCROLLBAR-DARKSHADOW-COLOR: #ffffff; LETTER-SPACING: 1pt; margin-top:20px; } .gv { width:600px; height:400px; margin-top:20px; border:#A8B7CC solid 1px; background-color:#FFFFFF; overflow: scroll; SCROLLBAR-FACE-COLOR:#E0EDFE; PADDING-BOTTOM: 0px; SCROLLBAR-HIGHLIGHT-COLOR: #ffffff; SCROLLBAR-SHADOW-COLOR: #cccccc; SCROLLBAR-3DLIGHT-COLOR:#ffffff; SCROLLBAR-ARROW-COLOR:#95AFD4; PADDING-TOP: 0px; SCROLLBAR-TRACK-COLOR: #ffffff; SCROLLBAR-DARKSHADOW-COLOR: #ffffff; LETTER-SPACING: 1pt; }using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data; using System.Web.UI.WebControls; /// <summary> ///Server 的摘要说明 /// </summary> public class Functions { private static object _synRoot=new object(); private static Functions _instance=null; private Functions() { // //TODO: 在此处添加构造函数逻辑 // } public static Functions getInstance() { lock (_synRoot) { if (_instance == null) { _instance = new Functions(); } } return _instance; } #region 业务层 /// <summary> /// 绑定gridview列 /// </summary> /// <param name="gv"></param> /// <param name="dt"></param> /// <param name="width"></param> /// <param name="columnNumber"></param> public void HtmlGridView(GridView gv,DataTable dt,int width,int columnNumber) { try { int k=0; if (dt.Rows.Count > 0) { foreach (DataRow dr in dt.Rows) { BoundField bf = new BoundField(); bf.HeaderText = dr["name"].ToString(); bf.DataField = dr["field_code"].ToString(); bf.HeaderStyle.Width = Convert.ToInt32(dr["width"].ToString()); bf.HeaderStyle.HorizontalAlign = HorizontalAlign.Center; bf.HeaderStyle.ForeColor = System.Drawing.Color.Black; bf.SortExpression = dr["name"].ToString(); gv.Columns.Add(bf); k+= Convert.ToInt32(dr["width"].ToString()); if (dr["width"].ToString()=="0") { gv.Columns[columnNumber].Visible = false; } columnNumber++; } gv.Width = k + width; } } catch(Exception ex) { throw new Exception(ex.Message); } } #endregion }using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Data; using System.Xml; using System.IO; using System.Web.UI; using System.Web.UI.WebControls; namespace IsXMLUtility { /// <summary> ///XmlHelper 的摘要说明 /// </summary> public class XmlHelper { private string rtnXml; public XmlHelper() { // //TODO: 在此处添加构造函数逻辑 // rtnXml = string.Empty; } /// <summary> /// 获取xmltable /// </summary> /// <param name="xmlname">xml名字</param> /// <returns></returns> public DataTable getDTXML(string xmlname) { DataTable result = new DataTable(); string fileName = HttpContext.Current.Request.PhysicalApplicationPath + "\\Xml\\" + xmlname + ".xml";//xml的物理路径 XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(fileName); XmlNodeList xWitsTablesList = xmlDoc.SelectNodes("/config"); foreach (XmlNode xOracleNode in xWitsTablesList) { foreach (XmlNode node2 in xOracleNode.ChildNodes) { if (node2.Name == "Header") { // //绑定表头 foreach (XmlNode node3 in node2.Attributes) { result.Columns.Add(node3.Value); } } else { //数据行 int i = 0;//列标志 DataRow dr = result.NewRow(); foreach (XmlNode node4 in node2.Attributes) { dr[i] = node4.Value.ToString(); i++; } result.Rows.Add(dr); } } } return result; } /// <summary> /// /// </summary> /// <param name="xmlname">xml名字</param> /// <param name="Header">序号列名字</param> /// <param name="colsNumber">序号开始编号</param> /// <returns></returns> public DataTable getDTXML(string xmlname, string Header, int colsNumber) { DataTable result = new DataTable(); if (Header == "") Header = "N0"; if (colsNumber < 0) colsNumber = 1; result.Columns.Add(Header); string fileName = HttpContext.Current.Request.PhysicalApplicationPath + "\\Xml\\" + xmlname + ".xml";//xml的物理路径 XmlDocument xmlDoc = new XmlDocument(); xmlDoc.Load(fileName); XmlNodeList xWitsTablesList = xmlDoc.SelectNodes("/config"); foreach (XmlNode xOracleNode in xWitsTablesList) { foreach (XmlNode node2 in xOracleNode.ChildNodes) { if (node2.Name == "Header") { //绑定表头 foreach (XmlNode node3 in node2.Attributes) { result.Columns.Add(node3.Value); } } else { //数据行 int i = 1;//列标志 DataRow dr = result.NewRow(); dr[0] = colsNumber; foreach (XmlNode node4 in node2.Attributes) { dr[i] = node4.Value.ToString(); i++; } colsNumber++; result.Rows.Add(dr); } } } return result; } } }以上就是xml学习（5）xml配置gridview列的内容，更多相关内容请关注PHP中文网（www.php.cn）！
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2.本文版权归属原作所有，仅代表作者本人观点，不代表本站的观点或立场
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