初次使用MapXtreme主题图

 根据NUM字段的不同 线路颜色

 

     private   void  Button5_Click( object  sender, System.EventArgs e)
         ... {
            try
            ...{
                string cables="";
                for(int i=0;i<this.ListBox_CableInfo.Items.Count;i++)
                ...{
                    if(i==0)
                    ...{
                        cables=this.ListBox_CableInfo.Items[i].Value;
                    }
                    else
                    ...{
                        cables=cables+","+this.ListBox_CableInfo.Items[i].Value;
                    }
                }
                string con_Str=System.Configuration.ConfigurationSettings.AppSettings["con_Str"].ToString().Trim();
                string INS_OCABLE_ID=this.ListBox_CableInfo.SelectedValue.ToString();    
                string SQL="SELECT  ins_sec_id , CASE   when count(ins_ocable_id) = 1 then 1 WHEN count(ins_ocable_id) = 2 THEN 2 WHEN count(ins_ocable_id) >2 THEN 3  END NUM  from ZHTrcm.INSPECTS_SEC_OPTICAL WHERE INS_OCABLE_ID IN("+cables+") group by ins_sec_id order by ins_sec_id";
                System.Data.DataTable dt=new DataTable();
                System.Data.OleDb.OleDbDataAdapter Adapter=new System.Data.OleDb.OleDbDataAdapter(SQL,con_Str);
                Adapter.Fill(dt);
                this.ShowLineCables("ShowCable",dt,2,3,System.Drawing.Color.GhostWhite);
            }
            catch(System.Exception ex)
            ...{
                this.Label_ERRORINFO.Text=ex.Message;
            }
        }

 

private   void  ShowLineCables( string  layerName,System.Data.DataTable dt_Line, int  LineWidth, int  pattern,System.Drawing.Color color)
   ... {
   MapInfo.Data.TableInfo ti;
   MapInfo.Data.Table table;
   table = MapInfo.Engine.Session.Current.Catalog.GetTable(layerName);
   ti = MapInfo.Data.TableInfoFactory.CreateTemp(layerName);
   MapInfo.Data.Column colLine_ID=MapInfo.Data.ColumnFactory.CreateIntColumn("INS_SEC_ID");//添加列 线路名称
   ti.Columns.Add(colLine_ID);
   MapInfo.Data.Column colLine_NUM=MapInfo.Data.ColumnFactory.CreateIntColumn("NUM");//添加列 线路名称
   ti.Columns.Add(colLine_NUM);;
   if(table!=null)
   ...{
    table.Close();
   }
   table = MapInfo.Engine.Session.Current.Catalog.CreateTable(ti);
   System.Data.DataTable dt=new DataTable();
   for(int i=0;i<dt_Line.Rows.Count;i++)
   ...{
    string SQL = "SELECT INS_STARTSPOTID,INS_ENDSPOTID FROM INSPECTS_SECTION WHERE INS_SEC_ID='"+dt_Line.Rows[i]["INS_SEC_ID"].ToString()+"'";
    string con_Str=System.Configuration.ConfigurationSettings.AppSettings["con_Str"];
    System.Data.OleDb.OleDbDataAdapter Adapter=new System.Data.OleDb.OleDbDataAdapter(SQL,con_Str);
    Adapter.Fill(dt);
   }
   for(int j=0;j<dt.Rows.Count;j++)
   ...{
    System.Data.DataTable dt_s = new DataTable();
    System.Data.DataTable dt_e = new DataTable();
    string SQL_s = "SELECT SPOT_AFTER,SPOT_LATITUE FROM INSPECTS_SPOT_TYPE WHERE SPOT_ID='"+dt.Rows[j]["INS_STARTSPOTID"]+"'";
    string SQL_e = "SELECT SPOT_AFTER,SPOT_LATITUE FROM INSPECTS_SPOT_TYPE WHERE SPOT_ID='"+dt.Rows[j]["INS_ENDSPOTID"]+"'";
    
    string con_Str=System.Configuration.ConfigurationSettings.AppSettings["con_Str"];
    System.Data.OleDb.OleDbDataAdapter adp_s = new System.Data.OleDb.OleDbDataAdapter(SQL_s,con_Str);
    adp_s.Fill(dt_s);
    System.Data.OleDb.OleDbDataAdapter adp_e = new System.Data.OleDb.OleDbDataAdapter(SQL_e,con_Str);
    adp_e.Fill(dt_e);

    double begin_x=Convert.ToDouble(dt_s.Rows[0]["SPOT_AFTER"]);
    double begin_y=Convert.ToDouble(dt_s.Rows[0]["SPOT_LATITUE"]);
    MapInfo.Geometry.DPoint beginPoint=new MapInfo.Geometry.DPoint(begin_x,begin_y);

    double end_x=Convert.ToDouble(dt_e.Rows[0]["SPOT_AFTER"]);
    double end_y=Convert.ToDouble(dt_e.Rows[0]["SPOT_LATITUE"]);
    MapInfo.Geometry.DPoint endPoint=new MapInfo.Geometry.DPoint(end_x,end_y);
 
    //create line
    MapInfo.Geometry.MultiCurve mc=MapInfo.Geometry.MultiCurve.CreateLine(this.MapControl1.Map.GetDisplayCoordSys(),beginPoint,endPoint);
    //create style
    MapInfo.Styles.SimpleLineStyle bl=new MapInfo.Styles.SimpleLineStyle(new MapInfo.Styles.LineWidth(2,MapInfo.Styles.LineWidthUnit.Pixel),3,Color.Red);
    MapInfo.Styles.CompositeStyle cs=new MapInfo.Styles.CompositeStyle(null,bl,null,null);
    //create feature with geometry, style and name
    MapInfo.Data.Feature f=new Feature(table.TableInfo.Columns);
    f.Geometry=mc;
    f.Style=cs;
    f["INS_SEC_ID"]=dt_Line.Rows[j]["INS_SEC_ID"];
    f["NUM"]=dt_Line.Rows[j]["NUM"];
    table.InsertFeature(f);
   }
   this.txtShowLine.Value="";
   MapInfo.Mapping.FeatureLayer layer = new MapInfo.Mapping.FeatureLayer(table);
   this.MapControl1.Map.Layers.Insert(0,layer);
   MapInfo.Mapping.Thematics.IndividualValueTheme itheme=new MapInfo.Mapping.Thematics.IndividualValueTheme(layer,"NUM",layerName);
   while(layer.Modifiers.Count>0)
   ...{
    layer.Modifiers.RemoveAt(0);
   }
   layer.Modifiers.Append(itheme);
   if(itheme.Bins[0]!=null)
   ...{
    (itheme.Bins[0].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Color=Color.Red;
    (itheme.Bins[0].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Pattern=42;
   }
   if(itheme.Bins[1]!=null)
   ...{
    (itheme.Bins[1].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Color=Color.Gold;
    (itheme.Bins[1].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Pattern=43; 
   }
   if(itheme.Bins[2]!=null)
   ...{
    (itheme.Bins[2].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Color=Color.DarkOrange;
    (itheme.Bins[2].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Pattern=44;
   }
   if(itheme.Bins[3]!=null)
   ...{
    (itheme.Bins[3].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Color=Color.DeepPink;
    (itheme.Bins[3].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Pattern=5;  
   }
   if(itheme.Bins[4]!=null)
   ...{
    (itheme.Bins[4].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Color=Color.Pink;
    (itheme.Bins[4].Style.LineStyle as MapInfo.Styles.SimpleLineStyle).Pattern=6;
   }
   int x=itheme.Bins.Count;
   itheme.RecomputeBins();
  }