如何在后端使用ASP.NET + JSON使jqGrid正常工作？

Question

好的，我回来了。我将问题完全简化为三个简单的字段，但仍然使用addJSONData方法停留在同一行上。我已经坚持了好几天，无论我如何重新处理ajax调用，json字符串，等等等等……我都无法使它正常工作！手动添加一行数据时，我什至无法将其用作功能。任何人都可以发布可与ASP.NET和JSON一起使用的jqGrid的工作示例吗？您能否包括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，而只是使用addJSONData方法手动添加JSON对象。非常感谢！！如果我能正常工作，我将为所有其他发布发布完整的代码示例，以寻求ASP.NET的帮助，JSON用户也坚持这样做。再次。谢谢！！

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

这是我收到此消息时Firebug显示的内容：

•objGridData对象总数= 1页= 1记录= 5行= [5]
○页“ 1”
记录“ 5”
总数“ 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（prop）PartnerID（值）“ BCN”（ prop）DateTimeInserted（value）Thu May 29
2008 GMT-0700（太平洋夏令时）
*还有三行

这是变量tbl（值）“ Table.scroll”的值

<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")};

Answer 1

这是一个简单的例子…

您需要使用https://github.com/douglascrockford/JSON-
js/blob/master/json2.js
才能正常工作…

当然还有常用的jquery文件。

将此粘贴到Web服务

// 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

<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>