如何让 jqGrid 在后端使用 ASP.NET + JSON 工作?-C#/.NET问题

How do I get jqGrid to work using ASP.NET + JSON on the backend?(如何让 jqGrid 在后端使用 ASP.NET + JSON 工作?)

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问题描述

好的，我回来了.我将问题完全简化为三个简单的字段，但使用 addJSONData 方法仍然停留在同一行.我已经坚持了好几天了，无论我如何修改 ajax 调用、json 字符串、等等等等，我都无法让它工作！手动添加一行数据时，我什至无法让它作为一个函数工作.任何人都可以发布一个适用于 ASP.NET 和 JSON 的 jqGrid 工作示例吗?请包含 2-3 个字段(最好是字符串、整数和日期?)我很高兴看到 jqGrid 的工作示例以及使用 addJSONData 方法手动添加 JSON 对象.非常感谢！！如果我得到这个工作，我将发布一个完整的代码示例，以获取 ASP.NET 的帮助，JSON 用户也坚持这一点.再次.谢谢！！

ok, I'm back. I totally simplified my problem to just three simple fields and I'm still stuck on the same line using the addJSONData method. I've been stuck on this for days and no matter how I rework the ajax call, the json string, blah blah blah...I can NOT get this to work! I can't even get it to work as a function when adding one row of data manually. Can anyone PLEASE post a working sample of jqGrid that works with ASP.NET and JSON? Would you please include 2-3 fields (string, integer and date preferably?) I would be happy to see a working sample of jqGrid and just the manual addition of a JSON object using the addJSONData method. Thanks SO MUCH!! If I ever get this working, I will post a full code sample for all the other posting for help from ASP.NET, JSON users stuck on this as well. Again. THANKS!!

tbl.addJSONData(objGridData);//err: tbl.addJSONData 不是函数！！

tbl.addJSONData(objGridData); //err: tbl.addJSONData is not a function!!

这是我收到此消息时 Firebug 显示的内容:

Here is what Firebug is showing when I receive this message:

• objGridData 对象总计=1 页=1 记录=5 行=[5]
○ 第1"页
记录5"
总计1"
行 [对象 ID=1 PartnerID=BCN，对象 ID=2 PartnerID=BCN，对象 ID=3 PartnerID=BCN，还有 2 个... 0=对象 1=对象 2=对象 3=对象 4=对象]
(索引) 0
(prop) ID (值) 1(道具)PartnerID(值)BCN"(prop) DateTimeInserted (value) Thu May 29 2008 12:08:45 GMT-0700 (Pacific Daylight Time)
* 还有三行

• objGridData Object total=1 page=1 records=5 rows=[5]
○ Page "1"
Records "5"
Total "1"
Rows [Object ID=1 PartnerID=BCN, Object ID=2 PartnerID=BCN, Object ID=3 PartnerID=BCN, 2 more... 0=Object 1=Object 2=Object 3=Object 4=Object]
(index) 0
(prop) ID (value) 1 (prop) PartnerID (value) "BCN" (prop) DateTimeInserted (value) Thu May 29 2008 12:08:45 GMT-0700 (Pacific Daylight Time)
* There are three more rows

这里是变量tbl(value)'Table.scroll'的值

Here is the value of the variable tbl (value) 'Table.scroll'

<TABLE cellspacing="0" cellpadding="0" border="0" style="width: 245px;" class="scroll grid_htable"><THEAD><TR><TH class="grid_sort grid_resize" style="width: 55px;"><SPAN> </SPAN><DIV id="jqgh_ID" style="cursor: pointer;">ID <IMG src="http://localhost/DNN5/js/jQuery/jqGrid-3.4.3/themes/sand/images/sort_desc.gif"/></DIV></TH><TH class="grid_resize" style="width: 90px;"><SPAN> </SPAN><DIV id="jqgh_PartnerID" style="cursor: pointer;">PartnerID </DIV></TH><TH class="grid_resize" style="width: 100px;"><SPAN> </SPAN><DIV id="jqgh_DateTimeInserted" style="cursor: pointer;">DateTimeInserted </DIV></TH></TR></THEAD></TABLE>

这是完整的功能:

 $('table.scroll').jqGrid({  
    datatype: function(postdata) {    
        mtype: "POST",    
    $.ajax({  
        url: 'EDI.asmx/GetTestJSONString',  
        type: "POST",  
        contentType: "application/json; charset=utf-8",  
        data: "{}",  
        dataType: "text", //not json . let me try to parse  
        success: function(msg, st) {  
            if (st == "success") {                    
                 var gridData;  

                //strip of "d:" notation  
                var result = JSON.parse(msg);   
                for (var property in result) {  
                    gridData = result[property];  
                    break;  
                }  

                var objGridData = eval("(" + gridData + ")"); //creates an object with visible data and structure  
                var tbl = jQuery('table.scroll')[0];  

                alert(objGridData.rows[0].PartnerID); //displays the correct data  

                //tbl.addJSONData(objGridData); //error received: addJSONData not a function  

                //error received: addJSONData not a function (This uses eval as shown in the documentation)  
                //tbl.addJSONData(eval("(" + objGridData + ")"));   

                //the line below evaluates fine, creating an object and visible data and structure  
                //var objGridData = eval("(" + gridData + ")");  
                //BUT, the same thing will not work here  
                //tbl.addJSONData(eval("(" + gridData + ")"));  
                //FIREBUG SHOWS THIS AS THE VALUE OF gridData:  
               // "{"total":"1","page":"1","records":"5","rows":[{"ID":1,"PartnerID":"BCN","DateTimeInserted":new Date(1214412777787)},{"ID":2,"PartnerID":"BCN","DateTimeInserted":new Date(1212088125000)},{"ID":3,"PartnerID":"BCN","DateTimeInserted":new Date(1212088125547)},{"ID":4,"PartnerID":"EHG","DateTimeInserted":new Date(1235603192033)},{"ID":5,"PartnerID":"EMDEON","DateTimeInserted":new Date(1235603192000)}]}"         

            }  
        }  
    });  
    },  
    jsonReader: {  
        root: "rows", //arry containing actual data  
        page: "page", //current page  
        total: "total", //total pages for the query  
        records: "records", //total number of records  
        repeatitems: false,  
        id: "ID" //index of the column with the PK in it   
    },  
    colNames: [  
        'ID', 'PartnerID', 'DateTimeInserted'  
          ],    
    colModel: [    
    { name: 'ID', index: 'ID', width: 55 },    
    { name: 'PartnerID', index: 'PartnerID', width: 90 },  
    { name: 'DateTimeInserted', index: 'DateTimeInserted', width: 100}],  
    rowNum: 10,  
    rowList: [10, 20, 30],  
    imgpath: 'http://localhost/DNN5/js/jQuery/jqGrid-3.4.3/themes/sand/images',  
    pager: jQuery('#pager'),  
    sortname: 'ID',  
    viewrecords: true,  
    sortorder: "desc",  
   caption: "TEST Example")};

推荐答案

这是一个简单的例子...

Here is a simple example...

您将需要 https://github.com/douglascrockford/JSON-js/blob/master/json2.js让它工作......

You will need https://github.com/douglascrockford/JSON-js/blob/master/json2.js for this to work...

当然还有通常的 jquery 文件.

and of course the usual jquery files.

将此粘贴到网络服务

Paste this to a webservice

// The lower case properties here are required to be lower case
// I cant find a way to rename them when they are serialized to JSON
// XmlElement("yournamehere") does not work for JSON :(
public class JQGrid
{
    public class Row
    {
        public int id { get; set; }
        public List<string> cell { get; set; }

        public Row()
        {
            cell = new List<string>();
        }
    }

    public int page { get; set; }
    public int total { get; set; }
    public int records { get; set; }
    public List<Row> rows { get; set; }

    public JQGrid()
    {
        rows = new List<Row>();
    }
}


[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
[ScriptService]
public class MyWebService : System.Web.Services.WebService
{

    [WebMethod(EnableSession = true)]
    [ScriptMethod(ResponseFormat = ResponseFormat.Json)]    
    public JQGrid GetJQGrid(int page, int pageSize, string sortIndex, string sortDirection)
    {
        DataSet ds = SqlHelper.ExecuteDataset(SqlHelper.CONN_STRING, "udsp_GetMyData",pageIndex, pageSize);

        if (ds == null || ds.Tables.Count < 1)
            throw new Exception("Unable to retrieve data.");

        JQGrid jqGrid = new JQGrid();

        int i = 1;
        foreach (DataRow dataRow in ds.Tables[0].Rows)
        {
            JQGrid.Row row = new JQGrid.Row();

            row.id = Convert.ToInt32(dataRow["MyIdColumn"]);

            row.cell.Add(dataRow["MyIdColumn"].ToString());

            row.cell.Add(dataRow["MyColumn"].ToString());


            projectGrid.rows.Add(row);
        }

        jqGrid.page = 1; // Set this when you are actually doing paging... this is just a sample
        jqGrid.records = jqGrid.rows.Count;
        jqGrid.total = jqGrid.rows.Count;  // Set this to total pages in your result...

        return jqGrid;
    }
}

将此粘贴到您的 aspx 页面

Paste this to your aspx page

<script type="text/javascript">
function getData(pdata) {
    var params = new Object();
    params.page = pdata.page;
    params.pageSize = pdata.rows;
    params.sortIndex = pdata.sidx;
    params.sortDirection = pdata.sord;


    $.ajax({
        type: "POST",
        contentType: "application/json; charset=utf-8",
        url: "/CLM/CLM.asmx/GetProjectGrid2",
        data: JSON.stringify(params),
        dataType: "json",
        success: function(data, textStatus) {
            if (textStatus == "success") {
                var thegrid = $("#testGrid")[0];
                thegrid.addJSONData(data.d);
            }
        },
        error: function(data, textStatus) {
            alert('An error has occured retrieving data!');
        }
    });
}

var gridimgpath = '/clm/css/ui-lightness/images';
$(document).ready(function() {
    $("#testGrid").jqGrid({
        datatype: function(pdata) {
            getData(pdata);
        },
        colNames: ['My Id Column', 'My Column'],
        colModel: [
            { name: 'MyIdColumn', index: 'MyIdColumn', width: 150 },
            { name: 'My Column', index: 'MyColumn', width: 250 }
        ],
        rowNum: 10,
        rowList: [10, 20, 30],
        imgpath: gridimgpath,
        pager: jQuery('#pagerdt'),
        sortname: 'id',
        viewrecords: false,
        sortorder: "desc",
        caption: "Projects",
        cellEdit: false
    });
});
</script>

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