在ArcGlobe三维环境中进行数据查询（.net）

/// <summary>

        /// 查询功能

        /// </summary>

        /// <paramname=”sender”></param>

        /// <paramname=”e”></param>

        private void BtnOK_Click(objectsender, EventArgs e)

        {

            try

            {

               //图层名称

               String LayerName = this.CbxLayer.Text;

               //查询条件               

               String SearchText = this.TbxName.Text;

               if (SearchText == String.Empty)

               {

                  

                   MessageBox.Show(“查询条件不允许为空！”, “错误”, MessageBoxButtons.OK, MessageBoxIcon.Error);

                   TbxName.Focus();

                   //清空数据列表

                   this.dg1.DataSource = null;

                   //跳出查询

                   return;

               }

               //当前视图

               IScene scene = this.axGlobeControl1.Globe.GlobeDisplay.Scene;

               //查询器

               IQueryFilter pQueryFilter = new QueryFilterClass();

               IActiveView pActiveView;

               pActiveView = (IActiveView)scene;

               //清空当前视图

               scene.ClearSelection();

 

               IFeatureLayer pFeatureLayer;

             

               pFeatureLayer = (IFeatureLayer)scene.get_Layer(GetLayerId(LayerName, scene));

               //判断要查询的图层

               if (LayerName == “堤防”)

               {

                   //查询条件

                   pQueryFilter.WhereClause = “XMMC like “%” + SearchText + “%”";

 



               }

               else if (LayerName == “险工险段”)

               {

                   //查询条件

                   pQueryFilter.WhereClause = “BZ like “%” + SearchText + “%”";

 



               }

               ……

              

               IFeatureCursor pFeatureCursor;

               //查询

               pFeatureCursor = pFeatureLayer.FeatureClass.Search(pQueryFilter, false);

               IFeature pFeature;

               pFeature = pFeatureCursor.NextFeature();

               IFields pFields = pFeatureCursor.Fields;

 

               int fieldIndex = 0;

               int fieldIndexName = 0;

               if (LayerName == “堤防”)

               {

                   fieldIndex = pFields.FindField(“NAME”);

                   fieldIndexName = pFields.FindField(“XMMC”);

 

               }

               else if (LayerName == “险工险段”)

               {

                   fieldIndex = pFields.FindField(“NAME”);

                   fieldIndexName = pFields.FindField(“BZ”);

 

               }

               ……

               pfeat = pFeature;

 

               if (pFeature == null)

               {

                   MessageBox.Show(“您所查询的结果不存在！”);

                   TbxName.Select();

                   TbxName.Focus();

                   this.dg1.DataSource = null;

                   return;

               }

               //绑定DataTable 

               DataTable dt = new DataTable();

               DataColumn dc1 = new DataColumn();

               dc1.ColumnName = “工程代码”;

               DataColumn dc2 = new DataColumn();

               dc2.ColumnName = “工程名称”;

 

               dt.Columns.Add(dc1);

               dt.Columns.Add(dc2);

 

               string Code = String.Empty;

               string Name = String.Empty;

               while (pFeature != null)

               {

                   //scene.SelectFeature(pFeatureLayer, pFeature);

 

                   Code = pFeature.get_Value(fieldIndex) as string;

                   Name = pFeature.get_Value(fieldIndexName) as string;

                   DataRow dr = dt.NewRow();

                   dr[0] = Code;

                   dr[1] = Name;

 

                   dt.Rows.Add(dr);

                   pFeature = pFeatureCursor.NextFeature();

               }

               //绑定列表

               this.dg1.DataSource = dt.DefaultView;

            }

            catch

            {

               MessageBox.Show(“异常！”, “错误”, MessageBoxButtons.OK, MessageBoxIcon.Error);

               this.dg1.DataSource = null;

            

            

            }

        }