c# AE 創建的shp 在arcmap中放大不顯示處理

ArcEngine中shp中先加入要素然後刪除一部分要素後，放大圖形後不顯示的問題解決方法

(一)問題描述如下：

shp中先加入要素然後刪除一部分要素後，圖形爲什麼顯示不正常了
//------------------
我遇到這個問題，請問大家是怎麼解決的?
我的操作是:
往shp文件加入要素，
然後，再刪除一部分要素，
顯示就不正常了:
現象如下所示：
"這種情況全圖顯示時能看到所有圖形，放大到某個範圍後，某些圖形就看不到了",

其加入要素代碼如下所示：

操作加入要素的代碼如下所示：
IFeatureCursor InsertCursor = null;
InsertCursor = Polygonfc.Insert(true);
IGeometry newgeo = null;
ComUnionOperator cuOp = new ComUnionOperator();
newgeo = cuOp.Union(FeatList.ToArray());   //
if (newgeo != null)
{
                                                (newgeo 
as ITopologicalOperator).Simplify();
                                                newgeo.SpatialReference = sr;
                                                
//創建一個新圖斑
                                                IFeatureBuffer featBuf = Polygonfc.CreateFeatureBuffer();
                                                featBuf.Shape = newgeo;        
//設置幾何對象
                                                zhfeat = 
new ZHFeaturePolygon(p_feat);
                                                zhfeat.CopyField(ref featBuf); 
//設置屬性值
                                                ZhFeatureBuffer zhfeatBuf =
new ZhFeatureBuffer(featBuf);
                                                zhfeatBuf.setFieldValue("xp_bh",
""); //設爲空以防被刪除
                                                //插入新圖斑到空間數據庫中
                                                InsertCursor.InsertFeature(featBuf);
                                                //記錄要刪除的原地物
                                                del_xp_bh_List.Add(xp_bh_str);
                                                del_xp_bh_List.Add(xp_bh_s_str);
                                                
//
}
//保存到空間庫中
                        if (InsertCursor !=
null)
                        {
                            InsertCursor.Flush();
                            TokayWorkspace.ComRelease(InsertCursor);
                            InsertCursor = null;
                        }

操作加入要素的代碼如下所示：
IFeatureCursor InsertCursor = null;
InsertCursor = Polygonfc.Insert(true);
IGeometry newgeo = null;
ComUnionOperator cuOp = new ComUnionOperator();
newgeo = cuOp.Union(FeatList.ToArray());   //
if (newgeo != null)
{
                                                (newgeo as ITopologicalOperator).Simplify();
                                                newgeo.SpatialReference = sr;
                                                //創建一個新圖斑
                                                IFeatureBuffer featBuf = Polygonfc.CreateFeatureBuffer();
                                                featBuf.Shape = newgeo;         //設置幾何對象 
                                                zhfeat = new ZHFeaturePolygon(p_feat);
                                                zhfeat.CopyField(ref featBuf);  //設置屬性值
                                                ZhFeatureBuffer zhfeatBuf = new ZhFeatureBuffer(featBuf);
                                                zhfeatBuf.setFieldValue("xp_bh", ""); //設爲空以防被刪除
                                                //插入新圖斑到空間數據庫中
                                                InsertCursor.InsertFeature(featBuf);
                                                //記錄要刪除的原地物
                                                del_xp_bh_List.Add(xp_bh_str);
                                                del_xp_bh_List.Add(xp_bh_s_str);
                                                //                                            
}
//保存到空間庫中
                        if (InsertCursor != null)
                        {
                            InsertCursor.Flush();
                            TokayWorkspace.ComRelease(InsertCursor);
                            InsertCursor = null;
                        }

操作刪除要素的代碼如下所示：
#region//刪除碎小地物操作
                        string t_del_wc =
"";
                        for (int i = 0; i < del_xp_bh_List.Count; i++)
                        {
                            if (t_del_wc.Trim() ==
"")
                            {
                                t_del_wc = "'" + del_xp_bh_List[i] +
"'";
                            }
                            else
                            {
                                t_del_wc += ",'" + del_xp_bh_List[i] +
"'";
                            }
                        }
                        if (t_del_wc.Trim() !=
"")  //???
                        {
                            IQueryFilter t_del_qf = 
new QueryFilterClass();
                            t_del_qf.WhereClause = 
"xp_bh in(" + t_del_wc + ")";
                            IFeatureCursor del_featcur = Polygonfc.Update(t_del_qf,
false);
                            IFeature del_feat = del_featcur.NextFeature();
                            while (del_feat !=
null)
                            {
                                del_featcur.DeleteFeature();
                                del_feat = del_featcur.NextFeature();
                            }
                            del_featcur.Flush();
                            TokayWorkspace.ComRelease(del_featcur);
                            del_featcur = null;
                            //
                            //TokayWorkspace.DeleteFeatures(Polygonfc, t_del_qf);
                        }
                        #endregion

操作刪除要素的代碼如下所示：
#region//刪除碎小地物操作
                        string t_del_wc = "";
                        for (int i = 0; i < del_xp_bh_List.Count; i++)
                        {
                            if (t_del_wc.Trim() == "")
                            {
                                t_del_wc = "'" + del_xp_bh_List[i] + "'";
                            }
                            else
                            {
                                t_del_wc += ",'" + del_xp_bh_List[i] + "'";
                            }
                        }
                        if (t_del_wc.Trim() != "")  //???
                        {
                            IQueryFilter t_del_qf = new QueryFilterClass();
                            t_del_qf.WhereClause = "xp_bh in(" + t_del_wc + ")";
                            IFeatureCursor del_featcur = Polygonfc.Update(t_del_qf, false);
                            IFeature del_feat = del_featcur.NextFeature();
                            while (del_feat != null)
                            {
                                del_featcur.DeleteFeature();
                                del_feat = del_featcur.NextFeature();
                            }
                            del_featcur.Flush();
                            TokayWorkspace.ComRelease(del_featcur);
                            del_featcur = null;
                            //
                            //TokayWorkspace.DeleteFeatures(Polygonfc, t_del_qf);
                        }
                        #endregion

經測試，加入要素沒有問題，不刪除操作，顯示是正常的,
問題出在當執行刪除操作時，顯示就不正常了,
但另存爲shp或其他格式的數據顯示就正常;

搜索網上的解決辦法的url地址：
http://hi.baidu.com/supu_beauty/ ... 98ff54242df26f.html
http://www.cnblogs.com/sxw_cug/archive/2010/08/27/1810345.html
ARCMAP中數據放大不顯示問題
2010-07-19 21:08
     最近發現在ARCMAP中矢量數據放大不顯示問題，暴露問題狀況爲：全屏狀態下數據正常顯示，放大後反而數據不顯示了，但是可以選擇的到。一般用如下三種方法解決問題：

     1、用ArcToolbox中的Datamanagement工具下的Features中的Repair Geometry修復數據。

     2、修改文件名，儘量用英文，同時修改路徑，儘量使其短，而且儘量使用英文。

     3、如果上面兩種方法無效的情況下，在ARCMAP中打開數據，然後Editor菜單下Start Editing，然後再Stop Editing，這樣放大就可顯示，至於原因正在查找中，原理也不是太明白，待以後更新補充。
//-------------------------------------------------------
我使用第三種方法這樣放大就可顯示了！原因我也不清楚!

如果是自定義編寫的應用軟件的話，需要重啓應用軟件，再開始編輯然後停止編輯，顯示就可以了!

執行完先加入要素，然後刪除一部分要素後
再執行下面的代碼：顯示問題依然存在!
//開始編輯然後再停止編輯
            IWorkspace ws = (this.Polygonfc as IDataset).Workspace;
            IWorkspaceEdit wsEdit = ws as IWorkspaceEdit;
            if (wsEdit.IsBeingEdited() == true)
            {
                wsEdit.StopEditing(true);
            }
            wsEdit.StartEditing(false);
            wsEdit.StopEditing(true);
            //
需要重啓應用軟件，再開始編輯然後停止編輯，顯示就可以了!

各位兄弟姐妹們，這個問題已經解決了。
解決方法如下代碼所示：
問題是刪除要素的時候出現的放大顯示現象，
我對刪除要素的代碼作如下形式的修改，這個現象就沒有了：
#region//刪除碎小地物操作
                        string t_del_wc = "";
                        for (int i = 0; i < del_xp_bh_List.Count; i++)
                        {
                            if (t_del_wc.Trim() == "")
                            {
                                t_del_wc = "'" + del_xp_bh_List[i] + "'";
                            }
                            else
                            {
                                t_del_wc += ",'" + del_xp_bh_List[i] + "'";
                            }
                        }
                        if (t_del_wc.Trim() != "") 
                        {
                            //開始編輯然後再停止編輯以處理放大不能顯示的問題
                            IWorkspace ws = (this.Polygonfc as IDataset).Workspace;
                            IWorkspaceEdit wsEdit = ws as IWorkspaceEdit;
                            if (wsEdit.IsBeingEdited() == true)
                            {
                                wsEdit.StopEditing(true);
                            }
                            wsEdit.StartEditing(false);
                            wsEdit.StartEditOperation();
                            //----

                            IQueryFilter t_del_qf = new QueryFilterClass();
                            t_del_qf.WhereClause = "xp_bh in(" + t_del_wc + ")";
                            IFeatureCursor del_featcur = Polygonfc.Update(t_del_qf, false);
                            IFeature del_feat = del_featcur.NextFeature();
                            while (del_feat != null)
                            {
                                del_featcur.DeleteFeature();
                                del_feat = del_featcur.NextFeature();
                            }
                            del_featcur.Flush();
                            TokayWorkspace.ComRelease(del_featcur);
                            del_featcur = null;
                            //----
                            wsEdit.StopEditOperation();
                            wsEdit.StopEditing(true);
                            //TokayWorkspace.DeleteFeatures(Polygonfc, t_del_qf);
                        }
                        #endregion

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vp:hsg

create date:2012-03-07  10:57