（ArcGIS API For Silverlight ）QueryTask 跨图层查询，并监控查询的完成！

概述（ArcGIS API For Silverlight ）QueryTask 跨图层查询，并监控查询的完成！     直接上源码：     定义全局变量：    int  index=0; /// <summary> /// QueryTask查询多个图层，并绑定数据 /// </summary> /// <param name="listUrl"> （ArcGIS API For Silverlight ）@R_502_5962@Task 跨图层查询，并监控查询的完成！
    直接上源码：     定义全局变量：    int  index=0;

/// <summary>        /// @R_502_5962@Task查询多个图层，并绑定数据        /// </summary>        /// <param name="ListUrl">图层Url集合</param>        /// <param name="strsql">图层查询sql</param>        private voID @R_502_5962@ByMultiUrl(List<string> ListUrl,string strsql)        {            if (strsql=="")            {                MessageBox.Show("请输入筛选条件！");                return;            }            loadingMask.LoadMask();            intUrlCount = ListUrl.Count;            if (intUrlCount != 0)            {                    string url = ListUrl[index];                    @R_502_5962@Task @R_502_5962@Task = new @R_502_5962@Task(url);                    @[email protected] += @R_502_5962@Task_AllFailed;                    @R_502_5962@ @R_502_5962@ = new @R_502_5962@();                    @[email protected] = true;                    @[email protected] = strsql;                    @[email protected]("*");                    @[email protected](@R_502_5962@);                    @[email protected] += (sender2,args2) =>                        {                            @R_502_5962@Task obj@R_502_5962@Task = sender2 as @R_502_5962@Task;                            Featureset pFeatureset = obj@[email protected];                            foreach (Graphic item in pFeatureset)                            {                                xmfwxGraphicList.Add(item);                            }                            index++;                            @R_502_5962@Fun(ListUrl,strsql);                        };            }        }

</pre>  </div><h2><strong> @R_502_5962@Fun（）函数：</strong></h2><div><strong></strong><pre name="code" > private voID @R_502_5962@Fun(List<string> ListUrl,string strsql)        {            if (index == intUrlCount)            {                index = 0;                System.windows.Data.PagedCollectionVIEw pageVIEw = new System.windows.Data.PagedCollectionVIEw(xmfwxGraphicList);                resultGrID.ItemsSource = pageVIEw;                this._GrdWorkBox_Pager.source = pageVIEw;                 this.CtrlSearchBox.Binding(resultGrID);                this.CtrlSearchBox.BingindTextBoxNotify(this.TxtTip,pageVIEw);                TextBlockExtension.SetRedText(TxtTip,xmfwxGraphicList.Count.ToString());                TxtTip.Text = xmfwxGraphicList.Count.ToString();                loadingMask.UnLoadMask();                if (xmfwxGraphicList.Count <= 0)                {                    MessageBox.Show("没查到相关数据！");                }                return;            }            @R_502_5962@ByMultiUrl(ListUrl,strsql);        }

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