Detailed explanation of jQuery EasyUI's DataGrid usage examples

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Detailed explanation of jQuery EasyUI's DataGrid usage examples_jquery

May 16, 2016 pm 03:21 PM

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jQuery EasyUI is a lightweight Web front-end development framework that provides many ready-made components to help programmers reduce the amount of front-end code development. The DataGrid was used in a previous project.
From the official homepage of the jQuery EasyUI framework, you can download the complete development package, which contains sample code for reference.

Operation rendering:

Since I am using ASP.NET webform technology, I will post the main code below for reference.
In the page, you must first reference the relevant css and js files so that you can use the component.
css part:

&lt;link href="../Js/jQueryEasyUI/theme/default/easyui.css" rel="stylesheet" type="text/css" /&gt; 
&lt;link href="../Js/jQueryEasyUI/theme/icon.css" rel="stylesheet" type="text/css" /&gt; 
&lt;link rel="stylesheet" type="text/css" href="../Css/datagrid.css" /&gt;

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js part:

&lt;script src="../Js/jQueryEasyUI/jquery-1.7.1.min.js" type="text/javascript"&gt;&lt;/script&gt; 
&lt;script src="../Js/jQueryEasyUI/jquery.easyui.min.js" type="text/javascript"&gt;&lt;/script&gt; 
&lt;script src="../Js/jQueryEasyUI/jquery.pagination.js" type="text/javascript"&gt;&lt;/script&gt;

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Since jQuery EasyUI is based on jQuery, the jQuery file must be introduced first. Pagination.js is the paging plug-in of EasyUI, and you will see the paging effect later.

&lt;script type="text/javascript"&gt; 
  $(function () { 
   var qParams = { mode: 'Query', hfjia: $("#&lt;%=hfjia.ClientID %&gt;").val(), sfz: $("#sfz").val() }; //取得查询参数 
   var oldRowIndex; 
   var opt = $("#grid"); 
   opt.datagrid({ 
    width: '780', 
    height: '440', 
    nowrap: false, 
    striped: true, 
    fitColumns: true, 
    singleSelect: true, 
    queryParams: qParams, //参数 
    url: '../Service/ServiceHanlder.ashx', 
    //idField: 'id', //主索引 
    //frozenColumns: [[{ field: 'ck', checkbox: true}]], 
    pageSize: 20, 
    pageList: [20, 25, 30], 
    pagination: true, //是否启用分页 
    rownumbers: true, //是否显示列数 
 
    onClickRow: function (rowIndex) { 
     if (oldRowIndex == rowIndex) { 
      opt.datagrid('clearSelections', oldRowIndex); 
     } 
     var selectRow = opt.datagrid('getSelected'); 
     oldRowIndex = opt.datagrid('getRowIndex', selectRow); 
    }, 
    columns: [[ 
     { 
      title: "浏览档案", width: 20, align: "center", formatter: function (value, rowData, rowIndex) { 
       return "&lt;font onclick=searchDA('" + rowData.PersonIdNum + "'); color='blue' &gt; 查看档案 &lt;/font&gt;"; 
      } 
     }, 
     { field: 'DAGInPosition', title: "档案位置", width: 40, align: "center" }, 
     { field: 'PersonIdNum', title: "身份证号", width: 80, align: "center" }, 
     { field: 'PersonName', title: "姓名", width: 40, align: "center" }, 
     { field: 'PersonSex', title: "性别", width: 30, align: "center" }, 
     { field: 'DAId', title: "档案编号", width: 60, align: "center" } 
    //     { field: 'DAGInOrg', title: "业务经办机构", width: 60, align: "center" } 
    ]] 
   }).datagrid("getPager").pagination({ 
    beforePageText: '第', //页数文本框前显示的汉字 
    afterPageText: '页/{pages}页', 
    displayMsg: '共{total}条记录', 
    onBeforeRefresh: function () { 
     return true; 
    } 
   }); 
  }); 
&lt;/script&gt;

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Please pay attention to this long js code, which is the core code of this page. Please pay attention to the parameter settings inside, which mainly dynamically construct datagird through js.
The Body part of the page:

&lt;body&gt; 
 &lt;form id="form1" runat="server"&gt; 
 &lt;asp:HiddenField ID="hfjia" runat="server" /&gt; 
 &lt;div&gt; 
  &lt;div class="form-wrapper cf" style="margin-top: 10px;"&gt; 
   &lt;div align="center" style="width: 780px;"&gt; 
    &lt;input id="sfz" runat="server" type="text" placeholder="请扫描档案袋上面的条形码..." /&gt; 
    &lt;button id="ssss"&gt; 
     档案查询&lt;/button&gt; 
   &lt;/div&gt; 
  &lt;/div&gt; 
  &lt;div style="float: left; width: 780px; margin-top: -40px; margin-left: 10px;"&gt; 
   &lt;table id="grid"&gt; 
   &lt;/table&gt; 
  &lt;/div&gt; 
  &lt;div style="float: left; margin-top: 10px; margin-left: 10px;"&gt; 
   &lt;input type="button" value="返回主菜单" id="button1s" onclick="javascript: window.location.href = '../Main.aspx'" /&gt; 
  &lt;/div&gt; 
 &lt;/div&gt; 
 &lt;/form&gt; 
&lt;/body&gt;

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The id is the table part of the grid, which corresponds to the grid in the js part above.
The code-behind part of the page:

protected void Page_Load(object sender, EventArgs e) 
{ 
 string dagid = Request.QueryString["dagid"]; 
 hfjia.Value = dagid; 
}

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It is very simple to assign a value to a hidden field stored in the front desk to maintain the state (record the location of the file shelf) when the page is refreshed.
The background data source address is ServiceHanlder.ashx, take a look at the detailed code inside.

namespace DAMIS.Pad2.Service 
{ 
 /// &lt;summary&gt; 
 /// ServiceHanlder 的摘要说明 
 /// &lt;/summary&gt; 
 public class ServiceHanlder : IHttpHandler 
 { 
  public void ProcessRequest(HttpContext context) 
  { 
   if (!string.IsNullOrEmpty(context.Request["mode"])) 
   { 
    if (context.Request["mode"].Equals("Query")) 
    { 
     if (!string.IsNullOrEmpty(context.Request["sfz"])) 
     { 
      string sfz = context.Request["sfz"]; 
      UserInfo userInfo = GetUserInfoById(sfz); 
 
      if (userInfo != null) 
      { 
       ReturnData rd = new ReturnData(); 
       rd.total = 1; 
       rd.rows = new List&lt;UserInfo&gt;() { userInfo }; 
 
       DataContractJsonSerializer json = new DataContractJsonSerializer(rd.GetType()); 
       json.WriteObject(context.Response.OutputStream, rd); 
      } 
      else 
      { 
       context.Response.Write("&lt;script&gt;alert('查无此人');&lt;/script&gt;"); 
      } 
     } 
     else 
     { 
      string hfjia = Regex.Match(context.Request["hfjia"].Split(';')[0], @"\d+").Value; 
      string page = context.Request["page"]; 
      string rows = context.Request["rows"]; 
 
      QueryData(hfjia, page, rows, context); 
     } 
    } 
 
    if (context.Request["mode"].Equals("QueryInner")) 
    { 
     string dajid = context.Request["dajid"].Trim('\''); 
     string dagid = context.Request["dagid"]; 
 
     string hfjia = string.Join("-", dajid, dagid); 
     string page = context.Request["page"]; 
     string rows = context.Request["rows"]; 
 
     QueryData(hfjia, page, rows, context); 
    } 
   } 
  } 
 
  #region 查询档案（分页） 
  /// &lt;summary&gt; 
  /// 查询档案（分页） 
  /// &lt;/summary&gt; 
  /// &lt;param name="hfjia"&gt;架号&lt;/param&gt; 
  /// &lt;param name="page"&gt;页数&lt;/param&gt; 
  /// &lt;param name="rows"&gt;行数&lt;/param&gt; 
  /// &lt;param name="context"&gt;&lt;/param&gt; 
  public void QueryData(string hfjia, string page, string rows, HttpContext context) 
  { 
   List&lt;UserInfo&gt; list = new List&lt;UserInfo&gt;(); 
   string msg = string.Empty; 
   DataTable dt = DAGCommonBLL.DAGPositionGetInformation(hfjia, out msg); 
 
   foreach (DataRow dr in dt.Rows) 
   { 
    list.Add(new UserInfo() 
    { 
     PersonIdNum = dr["PersonIdNum"].ToString(), 
     PersonName = dr["PersonName"].ToString(), 
     PersonSex = dr["PersonSex"].ToString(), 
     DAId = dr["DAId"].ToString(), 
     DABusKindName = dr["DABusKindName"].ToString(), 
     DAKindName = dr["DAKindName"].ToString(), 
     DALevelCodeName = dr["DALevelCodeName"].ToString(), 
     DAGInPosition = dr["DAGInPosition"].ToString(), 
     DAGInUserId = dr["DAGInUserId"].ToString(), 
     DAGInOrg = dr["DAGInOrg"].ToString(), 
     IsValid = dr["IsValid"].ToString(), 
    }); 
   } 
 
   list = list.OrderBy(x =&gt; x.DAGInPosition).ToList(); 
 
   ReturnData rd = new ReturnData(); 
   rd.total = dt.Rows.Count; 
   rd.rows = list.Where(x =&gt; x.IsValid == "0").Skip(Convert.ToInt32(rows) * (Convert.ToInt32(page) - 1)).Take(Convert.ToInt32(rows)).ToList(); 
   DataContractJsonSerializer json = new DataContractJsonSerializer(rd.GetType()); 
   json.WriteObject(context.Response.OutputStream, rd); 
  } 
  #endregion 
 
  #region 通过身份证号获取用户基本信息 
  /// &lt;summary&gt; 
  /// 通过身份证号获取用户基本信息 
  /// &lt;/summary&gt; 
  /// &lt;param name="id"&gt;身份证号&lt;/param&gt; 
  /// &lt;returns&gt;&lt;/returns&gt; 
  public static UserInfo GetUserInfoById(string id) 
  { 
   string hfjia = CommonBLL.GetUserPositionById(id); 
   string msg = string.Empty; 
   if (!string.IsNullOrEmpty(hfjia)) 
   { 
    hfjia = hfjia.Split('-')[0] + "-" + hfjia.Split('-')[1]; 
    DataTable dt = DAGCommonBLL.DAGPositionGetInformation(hfjia, out msg); 
    if (dt != null && dt.Rows.Count &gt; 0) 
    { 
     DataRow dr = dt.Select("personidnum = '" + id + "'").FirstOrDefault(); 
 
     UserInfo userInfo = new UserInfo() 
     { 
      PersonIdNum = dr["PersonIdNum"].ToString(), 
      PersonName = dr["PersonName"].ToString(), 
      PersonSex = dr["PersonSex"].ToString(), 
      DAId = dr["DAId"].ToString(), 
      DABusKindName = dr["DABusKindName"].ToString(), 
      DAKindName = dr["DAKindName"].ToString(), 
      DALevelCodeName = dr["DALevelCodeName"].ToString(), 
      DAGInPosition = dr["DAGInPosition"].ToString(), 
      DAGInUserId = dr["DAGInUserId"].ToString(), 
      DAGInOrg = dr["DAGInOrg"].ToString(), 
      IsValid = dr["IsValid"].ToString(), 
     }; 
     return userInfo; 
    } 
   } 
   return null; 
  } 
  #endregion 
 
  public bool IsReusable 
  { 
   get 
   { 
    return false; 
   } 
  } 
 } 
}

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There’s nothing much to say here, it’s just to provide data for the front-end page. The code can be further streamlined and processed, so I won’t correct it here.
An entity class used in it:

/// &lt;summary&gt; 
/// 分页返回数据 
/// &lt;/summary&gt; 
public class ReturnData 
{ 
 /// &lt;summary&gt; 
 /// 数据总数 
 /// &lt;/summary&gt; 
 public int total { get; set; } 
 
 /// &lt;summary&gt; 
 /// 具体数据 
 /// &lt;/summary&gt; 
 public List&lt;UserInfo&gt; rows { get; set; } 
}

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The above is a brief introduction to the usage examples of jQuery EasyUI's DataGrid. I hope it will be helpful to everyone's learning.

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