CRM 2011 根据当前视图抓取网格里面所有的数据

1.在对应实体的HomePage新增按钮土地地图，调用landinfomap.JS（上传到系统WEB资源中）

2.  New_landdata.JS中关键代码

//取经过筛选之后视图的FETCHXML，并保存在实体new_tempdata中(因XML过长,URL传值受到限制，目前只找到此方法),然后把保存的记录ID传参到LandDataMap.aspx页面(需另外做个批量删除的作业，来删除实体new_tempdata不需要的数据，可在数据管理—>> 批量删除记录里面创建)

 

function landinfomap(IDArr) {
    var fetchxml = IDArr.GetParameter("effectiveFetchXml");
    fetchxml = fetchxml.substring(fetchxml.indexOf(">") + 1, fetchxml.length)   //去掉XML中的第一句
    fetchxml = "<fetch mapping="logical" version="1.0">" + fetchxml;

    var tempdata = new Object();
    tempdata.new_fetchxml = fetchxml;
    var jsontempdata = JSON.stringify(tempdata);
    var createtempdata = CreateEntityRecordByISV("new_tempdata", false); //同步
    createtempdata.send(jsontempdata);
    if (createtempdata.status == 201) {
        var newTempdata = JSON.parse(createtempdata.responseText).d;
        var value = new Array();
        value[0] = new Object();
        value[0].id = newTempdata.new_tempdataId;
        value[0].typename = "new_tempdata";
    }
    else {
        alert("发生错误: " + JSON.parse(createphonecallReq.responseText).error.message.value);
    }

    
    var url = "../../ISV/LandDataMap.aspx?";
    var someValue = window.showModalDialog(url + "landid=" + newTempdata.new_tempdataId,
        "", "dialogWidth=800px;dialogHeight=600px;status=no;help=no;scrollbars=no");

}

//创建实体信息
function CreateEntityRecordByISV(entityschema, mode) {
    if (typeof (mode) == "undefined") {
        mode = false;
    }
    var serverUrl = Xrm.Page.context.getClientUrl();
    var ODataPath = serverUrl + "/XRMServices/2011/OrganizationData.svc" + "/" + entityschema + "Set";

    var createEntityReq = new XMLHttpRequest();
    createEntityReq.open("POST", ODataPath, mode);
    createEntityReq.setRequestHeader("Accept", "application/json");
    createEntityReq.setRequestHeader("Content-Type", "application/json; charset=utf-8");
    return createEntityReq;
}

3    LandDataMap.JS

接收landinfomap.JS传过来的参数，并通过LandDataInfo.ashx去取数据

//取土地
function GetLandInfo() {
    //jquery取数据
    $.ajax({
        type: "post",
        contentType: "application/json",
        url: "_common/LandDataInfo.ashx?serverUrl=" + encodeURIComponent(serverUrl) + "&landid=" + encodeURIComponent(landid),
        data: "",
        dataType: '',
        success: function (retstr) {
            var cname;
            var cid;
            var clng;
            var clat;
            var makeInfo;
            var regArr = retstr.split(';');
            markerArr = new Array();
            map = new BMap.Map("divMap");
            map.centerAndZoom(new BMap.Point(regArr[2], regArr[3]), 14);  // 初始化地图,设置中心点坐标和地图级别 (经度，纬度)
            map.addControl(new BMap.NavigationControl());             // 添加平移缩放控件
            map.addControl(new BMap.OverviewMapControl());          //添加缩略地图控件
            map.enableScrollWheelZoom();                            //启用滚轮放大缩小
            map.addControl(new BMap.MapTypeControl({ mapTypes: [BMAP_NORMAL_MAP, BMAP_HYBRID_MAP] }));     //添加地图类型控件
            for (var i = 0; i < regArr.length; i++) {
                cname = regArr[i]; i++;
                cid = regArr[i]; i++;
                clng = regArr[i]; i++;
                clat = regArr[i]; 
                if (clng != "" && clat != "") {
                    //加载地图标注
                    makeInfo = new Object();
                    makeInfo.title = cname;
                    makeInfo.content = cname;
                    makeInfo.lng = clng;
                    makeInfo.lat = clat;
                    makeInfo.isOpen = 0;
                    makeInfo.ID = cid;
                    if (rtype == "C") makeInfo.icon = { DType: "C", w: 60, h: 40, l: 46, t: 21, x: 9, lb: 12 };
                    markerArr.push(makeInfo);
                }
            }
            map.clearOverlays();
            addMarker();
        }
    });
}

4.  LandDataInfo.ashx

根据传过来的ID,先从new_tempdate取出保存的XML文件。因我这边需取经纬度，在原视图没有该列，所以我执行取出来的XML拿到GUID，然后重新再取了一次经纬度. CreateXml方法是采用分页 Cookie 对 FetchXML 查询的结果进行分页（因Fetchxml查询不能超过5千条，采用此方法解决）

public void ProcessRequest(HttpContext context)
        {
            string serverUrl = DNTRequest.GetQueryString("serverUrl");
            string landid = DNTRequest.GetQueryString("landid");
            serverUrl = serverUrl + "/XRMServices/2011/Organization.svc";
            CRMOrg crmOrg = new CRMOrg();
            OrganizationServiceProxy orgSvc = crmOrg.GetOrganization(serverUrl);
            string retstr = "";
            retstr = GetLandInfo(orgSvc, landid); 
            retstr = retstr.Replace("{", "");
            retstr = retstr.Replace("}", "");
            retstr = retstr.Replace("null", "");
            context.Response.Write(retstr);
        }
        //取土地信息
        private string GetLandInfo(OrganizationServiceProxy orgSvc, string landid)
        {
            string retstr = "";
            string fetchxml= "";
            string landdataid;
            string landaddress;
            string lat; //纬度
            string lng;

            #region //取存储的xml文档
            string tempXml = string.Format(@"<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
                                <entity name='new_tempdata'>
                                <attribute name='new_fetchxml' />
                                <filter type='and'>
                                    <condition attribute='new_tempdataid' operator='eq' value='{0}'/>
                                </filter>
                                </entity>
                            </fetch>", new Guid(landid));

            EntityCollection tempdataRetrieved = null;
            tempdataRetrieved = orgSvc.RetrieveMultiple(new FetchExpression(tempXml));
            foreach (var tempdataResult in tempdataRetrieved.Entities)
            {
                fetchxml= (tempdataResult.Contains("new_fetchxml")) ? tempdataResult.Attributes["new_fetchxml"].ToString() : "";
            }
            #endregion
               
           int fetchCount = 300; //定义每页查询的数目
            int pageNumber = 1;   //起始页
            string pagingCookie = null;


            while (true)
            {
                string xml = CreateXml(fetchxml, pagingCookie, pageNumber, fetchCount);
                EntityCollection returnCollection = orgSvc.RetrieveMultiple(new Microsoft.Xrm.Sdk.Query.FetchExpression(xml));

                foreach (var entity in returnCollection.Entities)
                {
                    landdataid = entity.Attributes.Contains("new_landdataid") ? (entity.Attributes["new_landdataid"]).ToString() : "";

                    #region //取经纬度
                    string competeXml = string.Format(@"<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
                                <entity name='new_landdata'>
                                <attribute name='new_landdataid' />
                                <attribute name='new_landaddress' />
                                <attribute name='new_lat' />
                                <attribute name='new_lng' />
                                <order attribute='new_lat' descending='false' />
                                <filter type='and'>
                                    <condition attribute='statecode' operator='eq' value='0' />
                                    <condition attribute='new_landdataid' operator='eq' value='{0}'/>
                                    <condition attribute='new_lng' operator='not-null' /> 
                                    <condition attribute='new_lat' operator='not-null' /> 
                                </filter>
                                </entity>
                            </fetch>", new Guid(landdataid));

                    EntityCollection landRetrieved = null;
                    landRetrieved = orgSvc.RetrieveMultiple(new FetchExpression(competeXml));
                    foreach (var landResult in landRetrieved.Entities)
                    {
                        landaddress = (landResult.Contains("new_landaddress")) ? landResult.Attributes["new_landaddress"].ToString() : "";
                        lat = (landResult.Contains("new_lat")) ? landResult.Attributes["new_lat"].ToString() : "";
                        lng = (landResult.Contains("new_lng")) ? landResult.Attributes["new_lng"].ToString() : "";

                        retstr += landaddress + ";" + landdataid + ";" + lng + ";" + lat + ";";
                    }
                    #endregion
                }

                if (returnCollection.MoreRecords)
                {
                    pageNumber++;
                }
                else
                {
                    break;
                }
            }            
            retstr = retstr.TrimEnd(';');
            return retstr;
        }


        public string CreateXml(string xml, string cookie, int page, int count)
        {
            StringReader stringReader = new StringReader(xml);
            XmlTextReader reader = new XmlTextReader(stringReader);

            // Load document
            XmlDocument doc = new XmlDocument();
            doc.Load(reader);

            return CreateXml(doc, cookie, page, count);
        }

        public string CreateXml(XmlDocument doc, string cookie, int page, int count)
        {
            XmlAttributeCollection attrs = doc.DocumentElement.Attributes;

            if (cookie != null)
            {
                XmlAttribute pagingAttr = doc.CreateAttribute("paging-cookie");
                pagingAttr.Value = cookie;
                attrs.Append(pagingAttr);
            }

            XmlAttribute pageAttr = doc.CreateAttribute("page");
            pageAttr.Value = System.Convert.ToString(page);
            attrs.Append(pageAttr);

            XmlAttribute countAttr = doc.CreateAttribute("count");
            countAttr.Value = System.Convert.ToString(count);
            attrs.Append(countAttr);

            StringBuilder sb = new StringBuilder(1024);
            StringWriter stringWriter = new StringWriter(sb);

            XmlTextWriter writer = new XmlTextWriter(stringWriter);
            doc.WriteTo(writer);
            writer.Close();

            return sb.ToString();
        }