C# SharpMap的简单使用-C/S开发框架|C/S框架网

C# SharpMap的简单使用-C/S开发框架

作者:csframework|C/S框架网发布日期:2021/12/30 18:48:34

C# SharpMap的简单使用-C/S开发框架

本文是利用ShapMap实现GIS的简单应用的小例子，以供学习分享使用。关于SharpMap的说明，网上大多是以ShapeFile为例进行简单的说明，就连官网上的例子也不多。本文是自己参考了源代码进行整理的，主要是WinForm的例子。原理方面本文也不过多论述，主要是实例演示，需要的朋友还是以SharpMap源码进行深入研究。

什么是SharpMap ?

SharpMap是一个基于.net 2.0使用C#开发的Map渲染类库，可以渲染各类GIS数据（目前支持ESRI Shape和PostGIS格式），可应用于桌面和Web程序。代码行数近10000行，可以算是一个实现了最基本功能的GIS系统，有利于研究学习使用。

涉及知识点：

SharpMap的基本概念：Layer(图层,常用图层：VectorLayer,LabelLayer) ， IProvider(数据提供者,常用数据源：Ogr(对应MapInfo),ShapFile,DataTablePoint(对应DataSet))
坐标转换：主要用于经纬度和地图坐标的转换。

SharpMap知识结构图：

C# SharpMap的简单使用-C/S开发框架

效果图如下：

（一）车辆轨迹图：数据源：Excel数据

C# SharpMap的简单使用-C/S开发框架

（二）定点数据（数据源：Excel）将河南省十七个城市，全部插上小红旗

C# SharpMap的简单使用-C/S开发框架

（三）使用MapInfo做背景文件（此处通过程序调整了比例尺）

C# SharpMap的简单使用-C/S开发框架

（四）使用ShapFile做背景图

C# SharpMap的简单使用-C/S开发框架

核心代码

 using BruTile.Predefined;
 using GeoAPI.CoordinateSystems.Transformations;
 using ProjNet.CoordinateSystems;
 using ProjNet.CoordinateSystems.Transformations;
 using SharpMap;
 using SharpMap.Data.Providers;
 using SharpMap.Layers;
 using SharpMap.Rendering;
 using SharpMap.Rendering.Thematics;
 using SharpMap.Styles;
 using System;
 using System.Collections.Generic;
 using System.Data;
 using System.Data.OleDb;
 using System.Drawing;
 using System.Drawing.Drawing2D;
 using System.Drawing.Text;
 using System.Linq;
 using System.Text;
 using Point = GeoAPI.Geometries.Coordinate;
 namespace DemoSharpMap
 {
     public class SharpMapHelper
     {
 
         private const string XlsConnectionString = "Provider={2};Data Source={0}\\{1};Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=1\"";
 
         public static Map InitializeMap(MapType tt,float angle)
         {
             Map map = null;
             switch (tt)
             {
                 case MapType.RunLine:
                     map = InitializeMapOsmWithXls(angle);
                     break;
                 case MapType.MapInfo:
                     map = InitializeMapinfo(angle);
                     break;
                 case MapType.ShapeFile:
                     map = InitializeMapOrig(angle);
                     break;
                 case MapType.Static:
                     map = InitializeMapOsmWithXls2(angle);
                     break;
                 default:
                     map = InitializeMapOsmWithXls(angle);
                     break;
             }
             return map;
         }
 
         /// <summary>
         /// MapInfo格式的地图文件
         /// </summary>
         /// <param name="angle"></param>
         /// <returns></returns>
         private static Map InitializeMapinfo(float angle)
         {
             //Initialize a new map of size 'imagesize'
             Map map = new Map();
 
             //Set up the countries layer
             VectorLayer layCountries = new VectorLayer("Countries");
             //Set the datasource to a shapefile in the App_data folder
             try
             {
                 layCountries.DataSource = new Ogr("GeoData/MapInfo/countriesMapInfo.tab");
             }
             catch (TypeInitializationException ex)
             {
                 if (ex.Message == "The type initializer for 'OSGeo.OGR.Ogr' threw an exception.")
                 {
                     throw new Exception(
                         String.Format(
                             "The application threw a PINVOKE exception. You probably need to copy the unmanaged dll's to your bin directory. They are a part of fwtools {0}. You can download it from: http://home.gdal.org/fwtools/",
                             GdalRasterLayer.FWToolsVersion));
                 }
                 throw;
             }
 
             //Set fill-style to green
             layCountries.Style.Fill = new SolidBrush(Color.Green);
             //Set the polygons to have a black outline
             layCountries.Style.Outline = Pens.Black;
             layCountries.Style.EnableOutline = true;
             layCountries.SRID = 4326;
 
             //Set up a river layer
             VectorLayer layRivers = new VectorLayer("Rivers");
             //Set the datasource to a shapefile in the App_data folder
             layRivers.DataSource = new Ogr("GeoData/MapInfo/riversMapInfo.tab");
             //Define a blue 1px wide pen
             layRivers.Style.Line = new Pen(Color.Blue, 1);
             layRivers.SRID = 4326;
 
             //Set up a river layer
             VectorLayer layCities = new VectorLayer("Cities");
             //Set the datasource to a shapefile in the App_data folder
             layCities.DataSource = new Ogr("GeoData/MapInfo/citiesMapInfo.tab");
             layCities.Style.SymbolScale = 0.8f;
             layCities.MaxVisible = 40;
             layCities.SRID = 4326;
 
             //Set up a country label layer
             LabelLayer layLabel = new LabelLayer("Country labels");
             layLabel.DataSource = layCountries.DataSource;
             layLabel.Enabled = true;
             layLabel.LabelColumn = "Name";
             layLabel.Style = new LabelStyle();
             layLabel.Style.ForeColor = Color.White;
             layLabel.Style.Font = new Font(FontFamily.GenericSerif, 12);
             layLabel.Style.BackColor = new SolidBrush(Color.FromArgb(128, 255, 0, 0));
             layLabel.MaxVisible = 90;
             layLabel.MinVisible = 30;
             layLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center;
             layLabel.SRID = 4326;
             layLabel.MultipartGeometryBehaviour = LabelLayer.MultipartGeometryBehaviourEnum.Largest;
 
             //Set up a city label layer
             LabelLayer layCityLabel = new LabelLayer("City labels");
             layCityLabel.DataSource = layCities.DataSource;
             layCityLabel.Enabled = true;
             layCityLabel.LabelColumn = "Name";
             layCityLabel.Style = new LabelStyle();
             layCityLabel.Style.ForeColor = Color.Black;
             layCityLabel.Style.Font = new Font(FontFamily.GenericSerif, 11);
             layCityLabel.MaxVisible = layLabel.MinVisible;
             layCityLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left;
             layCityLabel.Style.VerticalAlignment = LabelStyle.VerticalAlignmentEnum.Bottom;
             layCityLabel.Style.Offset = new PointF(3, 3);
             layCityLabel.Style.Halo = new Pen(Color.Yellow, 2);
             layCityLabel.TextRenderingHint = TextRenderingHint.AntiAlias;
             layCityLabel.SmoothingMode = SmoothingMode.AntiAlias;
             layCityLabel.SRID = 4326;
             layCityLabel.LabelFilter = LabelCollisionDetection.ThoroughCollisionDetection;
             layCityLabel.Style.CollisionDetection = true;
 
             //Add the layers to the map object.
             //The order we add them in are the order they are drawn, so we add the rivers last to put them on top
             map.Layers.Add(layCountries);
             map.Layers.Add(layRivers);
             map.Layers.Add(layCities);
             map.Layers.Add(layLabel);
             map.Layers.Add(layCityLabel);
             //增加Layers
             var xlsPath = string.Format(XlsConnectionString, System.IO.Directory.GetCurrentDirectory(), "GeoData\\Henan.xls", Properties.Settings.Default.OleDbProvider);
             var ds = GetDataFromExcel(xlsPath, "Cities");
             //var ct = GetCoordinateTransformation();
             //TransCoordinate(ds, ct);
             string columeName = "Rotation";
             //Add Rotation Column
             AddColumeToDataSet(ds, columeName, -angle);
 
             var xlsLayer = GetLayerFromDataSet2(ds, Color.GreenYellow);//Set up provider
            
             map.Layers.Add(xlsLayer); //Add layer to map
             map.Center = xlsLayer.Envelope.Centre;// new Point(0, 0);
             map.MapScale = 350;
             //map.Center = new Point(0, 0);
 
             //_ogrSampleDataset = "MapInfo";
 
             //Matrix mat = new Matrix();
             //mat.RotateAt(angle, map.WorldToImage(map.Center));
             //map.MapTransform = mat;
 
             //map.ZoomToBox(xlsLayer.Envelope);
             return map;
         }
 
         /// <summary>
         /// ShapeFile
         /// </summary>
         /// <param name="angle"></param>
         /// <returns></returns>
         private static Map InitializeMapOrig(float angle)
         {
             //Initialize a new map of size 'imagesize'
             Map map = new Map();
 
             //Set up the countries layer
             VectorLayer layCountries = new VectorLayer("Countries");
             //Set the datasource to a shapefile in the App_data folder
             layCountries.DataSource = new ShapeFile("GeoData/World/countries.shp", true);
             //Set fill-style to green
             layCountries.Style.Fill = new SolidBrush(Color.FromArgb(64, Color.Green));
             //Set the polygons to have a black outline
             layCountries.Style.Outline = Pens.Black;
             layCountries.Style.EnableOutline = true;
             layCountries.SRID = 4326;
 
             //Set up a river layer
             VectorLayer layRivers = new VectorLayer("Rivers");
             //Set the datasource to a shapefile in the App_data folder
             layRivers.DataSource = new ShapeFile("GeoData/World/rivers.shp", true);
             //Define a blue 1px wide pen
             layRivers.Style.Line = new Pen(Color.Blue, 1);
             layRivers.SRID = 4326;
 
             //Set up a cities layer
             VectorLayer layCities = new VectorLayer("Cities");
             //Set the datasource to a shapefile in the App_data folder
             layCities.DataSource = new ShapeFile("GeoData/World/cities.shp", true);
             layCities.Style.SymbolScale = 0.8f;
             layCities.MaxVisible = 40;
             layCities.SRID = 4326;
 
             //Set up a country label layer
             LabelLayer layLabel = new LabelLayer("Country labels");
             layLabel.DataSource = layCountries.DataSource;
             layLabel.Enabled = true;
             layLabel.LabelColumn = "Name";
             layLabel.Style = new LabelStyle();
             layLabel.Style.ForeColor = Color.White;
             layLabel.Style.Font = new Font(FontFamily.GenericSerif, 12);
             layLabel.Style.BackColor = new SolidBrush(Color.FromArgb(128, 255, 0, 0));
             layLabel.MaxVisible = 90;
             layLabel.MinVisible = 30;
             layLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center;
             layLabel.SRID = 4326;
             layLabel.MultipartGeometryBehaviour = LabelLayer.MultipartGeometryBehaviourEnum.Largest;
             layLabel.LabelFilter = LabelCollisionDetection.ThoroughCollisionDetection;
             layLabel.Style.CollisionDetection = true;
             layLabel.LabelPositionDelegate = fdr => fdr.Geometry.InteriorPoint.Coordinate;
             layLabel.PriorityColumn = "POPDENS";
 
             //Set up a city label layer
             LabelLayer layCityLabel = new LabelLayer("City labels");
             layCityLabel.DataSource = layCities.DataSource;
             layCityLabel.Enabled = true;
             layCityLabel.LabelColumn = "Name";
             layCityLabel.Style = new LabelStyle();
             layCityLabel.Style.ForeColor = Color.Black;
             layCityLabel.Style.Font = new Font(FontFamily.GenericSerif, 11);
             layCityLabel.MaxVisible = layLabel.MinVisible;
             layCityLabel.Style.HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Left;
             layCityLabel.Style.VerticalAlignment = LabelStyle.VerticalAlignmentEnum.Bottom;
             layCityLabel.Style.Offset = new PointF(3, 3);
             layCityLabel.Style.Halo = new Pen(Color.Yellow, 2);
             layCityLabel.TextRenderingHint = TextRenderingHint.AntiAlias;
             layCityLabel.SmoothingMode = SmoothingMode.AntiAlias;
             layCityLabel.SRID = 4326;
             layCityLabel.LabelFilter = LabelCollisionDetection.ThoroughCollisionDetection;
             layCityLabel.Style.CollisionDetection = true;
             layCityLabel.PriorityColumn = "POPULATION";
             layCityLabel.Theme = new GradientTheme(layCityLabel.PriorityColumn, 250000, 5000000,
                 new LabelStyle
                 {
                     MaxVisible = 10,
                     CollisionBuffer = new Size(0, 0),
                     CollisionDetection = true,
                     Enabled = true,
                     ForeColor = Color.LightSlateGray,
                     Halo = new Pen(Color.Silver, 1),
                     HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
                     VerticalAlignment = LabelStyle.VerticalAlignmentEnum.Middle,
                     Font = new Font(GenericFontFamilies.SansSerif.ToString(), 8f, FontStyle.Regular)
                 },
                 new LabelStyle
                 {
                     MaxVisible = layLabel.MinVisible,
                     CollisionBuffer = new Size(3, 3),
                     CollisionDetection = true,
                     Enabled = true,
                     ForeColor = Color.LightSlateGray,
                     Halo = new Pen(Color.Silver, 5),
                     HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
                     VerticalAlignment = LabelStyle.VerticalAlignmentEnum.Middle,
                     Font = new Font(GenericFontFamilies.SansSerif.ToString(), 16f, FontStyle.Bold)
                 });
 
             bool ignoreLength = false;
 
             var layRiverLabel = new LabelLayer("River labels")
             {
                 DataSource = layRivers.DataSource,
                 Enabled = true,
                 LabelColumn = "Name",
                 TextRenderingHint = TextRenderingHint.AntiAlias,
                 SmoothingMode = SmoothingMode.AntiAlias,
                 SRID = 4326,
                 LabelFilter = LabelCollisionDetection.ThoroughCollisionDetection,
                 MultipartGeometryBehaviour = LabelLayer.MultipartGeometryBehaviourEnum.CommonCenter,
                 Style =
                                            new LabelStyle
                                            {
                                                ForeColor = Color.DarkBlue,
                                                Font = new Font(FontFamily.GenericSansSerif, 11),
                                                HorizontalAlignment = LabelStyle.HorizontalAlignmentEnum.Center,
                                                VerticalAlignment = LabelStyle.VerticalAlignmentEnum.Middle,
                                                //CollisionDetection = true,
                                                Halo = new Pen(Color.Azure, 2),
                                                IgnoreLength = ignoreLength,
                                                Offset = new PointF(0, -10)
 
                                            },
             };
 
             //Add the layers to the map object.
             //The order we add them in are the order they are drawn, so we add the rivers last to put them on top
             //map.BackgroundLayer.Add(AsyncLayerProxyLayer.Create(layCountries));
             map.Layers.Add(layCountries);
             map.Layers.Add(layRivers);
             map.Layers.Add(layCities);
             map.Layers.Add(layLabel);
             map.Layers.Add(layCityLabel);
             map.Layers.Add(layRiverLabel);
 
             //增加Layers
             var xlsPath = string.Format(XlsConnectionString, System.IO.Directory.GetCurrentDirectory(), "GeoData\\Henan.xls", Properties.Settings.Default.OleDbProvider);
             var ds = GetDataFromExcel(xlsPath, "Cities");
             //var ct = GetCoordinateTransformation();
             //TransCoordinate(ds, ct);
             string columeName = "Rotation";
             //Add Rotation Column
             AddColumeToDataSet(ds, columeName, -angle);
 
             var xlsLayer = GetLayerFromDataSet2(ds, Color.GreenYellow);//Set up provider
 
             map.Layers.Add(xlsLayer); //Add layer to map
                                       //limit the zoom to 360 degrees width
                                       //map.MaximumZoom = 360;
                                       //map.BackColor = Color.LightBlue;
 
             //map.Zoom = 360;
             map.Center = xlsLayer.Envelope.Centre;// new Point(0, 0);
             map.MapScale = 350;
             //Matrix mat = new Matrix();
             //mat.RotateAt(angle, map.WorldToImage(map.Center));
             //map.MapTransform = mat;
             //map.ZoomToBox(xlsLayer.Envelope);
             return map;
         }
 
         /// <summary>
         /// 在线显示，圆点显示轨迹
         /// </summary>
         /// <param name="angle"></param>
         /// <returns></returns>
         private static Map InitializeMapOsmWithXls(float angle)
         {
             var map = new Map();
 
             var tileLayer = new TileAsyncLayer(
                 KnownTileSources.Create(KnownTileSource.OpenStreetMap), "TileLayer - OSM with XLS");
             tileLayer.SRID = 4326;
             map.BackgroundLayer.Add(tileLayer);
 
             //Get data from excel
             var xlsPath = string.Format(XlsConnectionString, System.IO.Directory.GetCurrentDirectory(), "GeoData\\Cities.xls", Properties.Settings.Default.OleDbProvider);
             var ds = GetDataFromExcel(xlsPath, "Cities");
             var ds1 = GetDataFromExcel(xlsPath, "Cities2");
             var ct = GetCoordinateTransformation();
             TransCoordinate(ds, ct);
             TransCoordinate(ds1, ct);
             string columeName = "Rotation";
             //Add Rotation Column
             AddColumeToDataSet(ds, columeName, -angle);
             AddColumeToDataSet(ds1, columeName, -angle);
 
             var xlsLayer = GetLayerFromDataSet(ds, Color.GreenYellow);//Set up provider
             map.Layers.Add(xlsLayer); //Add layer to map
 
             var xlsLayer1 = GetLayerFromDataSet(ds1, Color.Red);
             map.Layers.Add(xlsLayer1);
 
             var xlsLabelLayer = GetLabelLayerByVectorLayer(xlsLayer, "XLSLabel");
 
             xlsLabelLayer.Theme = new SharpMap.Rendering.Thematics.FontSizeTheme(xlsLabelLayer, map) { FontSizeScale = 1000f };
             map.Layers.Add(xlsLabelLayer);
             map.ZoomToBox(xlsLayer.Envelope.ExpandedBy(xlsLayer1.Envelope));
             return map;
         }
 
         /// <summary>
         /// 在线显示，图标显示轨迹
         /// </summary>
         /// <param name="angle"></param>
         /// <returns></returns>
         private static Map InitializeMapOsmWithXls2(float angle)
         {
             var map = new Map();
 
             var tileLayer = new TileAsyncLayer(
                 KnownTileSources.Create(KnownTileSource.OpenStreetMap), "TileLayer - OSM with XLS");
             tileLayer.SRID = 4326;
             map.BackgroundLayer.Add(tileLayer);
 
             //Get data from excel
             var xlsPath = string.Format(XlsConnectionString, System.IO.Directory.GetCurrentDirectory(), "GeoData\\Henan.xls", Properties.Settings.Default.OleDbProvider);
             var ds = GetDataFromExcel(xlsPath, "Cities");
             var ct = GetCoordinateTransformation();
             TransCoordinate(ds, ct);
             string columeName = "Rotation";
             //Add Rotation Column
             AddColumeToDataSet(ds, columeName, -angle);
 
             var xlsLayer = GetLayerFromDataSet2(ds, Color.GreenYellow);//Set up provider
             map.Layers.Add(xlsLayer); //Add layer to map
 
             var xlsLabelLayer = GetLabelLayerByVectorLayer(xlsLayer, "XLSLabel");
 
             xlsLabelLayer.Theme = new FontSizeTheme(xlsLabelLayer, map) { FontSizeScale = 1000f };
             map.Layers.Add(xlsLabelLayer);
             map.ZoomToBox(xlsLayer.Envelope);
             return map;
         }
 
         /// <summary>
         /// 从Excel中读取数据
         /// </summary>
         private static DataSet GetDataFromExcel(string xlsPath, string sheetName)
         {
             DataSet ds = new DataSet("XLS");
             string sql = string.Format("SELECT * FROM [{0}$];", sheetName);
             using (var cn = new OleDbConnection(xlsPath))
             {
                 cn.Open();
                 using (var da = new OleDbDataAdapter(new OleDbCommand(sql, cn)))
                 {
                     da.Fill(ds);
                 }
             }
             return ds;
         }
 
         /// <summary>
         /// 获取坐标转换对象
         /// </summary>
         /// <returns></returns>
         private static ICoordinateTransformation GetCoordinateTransformation()
         {
             //The SRS for this datasource is EPSG:4326, therefore we need to transfrom it to OSM projection
             var ctf = new CoordinateTransformationFactory();
             var cf = new CoordinateSystemFactory();
             var epsg4326 = cf.CreateFromWkt("GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS 84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY[\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],UNIT[\"degree\",0.01745329251994328,AUTHORITY[\"EPSG\",\"9122\"]],AUTHORITY[\"EPSG\",\"4326\"]]");
             var epsg3857 = cf.CreateFromWkt("PROJCS[\"Popular Visualisation CRS / Mercator\", GEOGCS[\"Popular Visualisation CRS\", DATUM[\"Popular Visualisation Datum\", SPHEROID[\"Popular Visualisation Sphere\", 6378137, 0, AUTHORITY[\"EPSG\",\"7059\"]], TOWGS84[0, 0, 0, 0, 0, 0, 0], AUTHORITY[\"EPSG\",\"6055\"]],PRIMEM[\"Greenwich\", 0, AUTHORITY[\"EPSG\", \"8901\"]], UNIT[\"degree\", 0.0174532925199433, AUTHORITY[\"EPSG\", \"9102\"]], AXIS[\"E\", EAST], AXIS[\"N\", NORTH], AUTHORITY[\"EPSG\",\"4055\"]], PROJECTION[\"Mercator\"], PARAMETER[\"False_Easting\", 0], PARAMETER[\"False_Northing\", 0], PARAMETER[\"Central_Meridian\", 0], PARAMETER[\"Latitude_of_origin\", 0], UNIT[\"metre\", 1, AUTHORITY[\"EPSG\", \"9001\"]], AXIS[\"East\", EAST], AXIS[\"North\", NORTH], AUTHORITY[\"EPSG\",\"3857\"]]");
             var ct = ctf.CreateFromCoordinateSystems(epsg4326, epsg3857);
             return ct;
         }
 
         /// <summary>
         /// 转换地球经纬度到坐标
         /// </summary>
         /// <param name="ds"></param>
         /// <param name="ct"></param>
         private static void TransCoordinate(DataSet ds, ICoordinateTransformation ct)
         {
             foreach (System.Data.DataRow row in ds.Tables[0].Rows)
             {
                 if (row["X"] == DBNull.Value || row["Y"] == DBNull.Value) continue;
                 var coords = new[] { Convert.ToDouble(row["X"]), Convert.ToDouble(row["Y"]) };
                 coords = ct.MathTransform.Transform(coords);
                 row["X"] = coords[0];
                 row["Y"] = coords[1];
             }
         }
 
         /// <summary>
         /// 增加列
         /// </summary>
         /// <param name="ds"></param>
         /// <param name="columeName"></param>
         /// <param name="columeValue"></param>
         private static void AddColumeToDataSet(DataSet ds, string columeName, float columeValue)
         {
             ds.Tables[0].Columns.Add(columeName, typeof(float));
             foreach (System.Data.DataRow row in ds.Tables[0].Rows)
             {
                 row["Rotation"] = -columeValue;
             }
         }
 
         /// <summary>
         /// 轨迹用点表示
         /// </summary>
         /// <param name="ds"></param>
         /// <param name="c"></param>
         /// <returns></returns>
         private static VectorLayer GetLayerFromDataSet(DataSet ds, Color c)
         {
             var xlsProvider = new DataTablePoint(ds.Tables[0], "OID", "X", "Y");
             var xlsLayer = new VectorLayer("XLS", xlsProvider)
             { Style = new VectorStyle() { PointColor = new SolidBrush(c) } };
             return xlsLayer;
         }
 
         /// <summary>
         /// 获取带图标的图层
         /// </summary>
         /// <param name="ds"></param>
         /// <param name="c"></param>
         /// <returns></returns>
         private static VectorLayer GetLayerFromDataSet2(DataSet ds, Color c)
         {
             var xlsProvider = new DataTablePoint(ds.Tables[0], "OID", "X", "Y");
             var xlsLayer = new VectorLayer("XLS", xlsProvider)
             { Style = { Symbol=Properties.Resources.redflag} };
             return xlsLayer;
         }
 
         private static LabelLayer GetLabelLayerByVectorLayer(VectorLayer xlsLayer, string layerName)
         {
             var xlsLabelLayer = new LabelLayer(layerName)
             {
                 DataSource = xlsLayer.DataSource,
                 LabelColumn = "NAME",
                 //PriorityColumn = "Population",
                 Style =
                     {
                         CollisionBuffer = new System.Drawing.SizeF(2f, 2f),
                         CollisionDetection = true
                     },
                 LabelFilter = LabelCollisionDetection.ThoroughCollisionDetection
             };
             return xlsLabelLayer;
         }
     }
 
     public enum MapType {
         ShapeFile = 0,
         MapInfo = 1,
         RunLine = 2,//运行轨迹
         Static = 3 //定点数据
 
     }
 }

View Code

备注：

因用的MapInfo和Shape源文件为源码里面的，所有为英文显示。

参考文档：

C#使用PInvoke.Kernel32加载非托管DLL嵌入资源-C/S开发框架
C#使用Newtonsoft.Json.dll解析Json数据-C/S开发框架
C#使用SqlBulkCopy快速导入Excel文件(xls/xlsx)-C/S开发框架
C# 实现截图软件功能-C/S开发框架
C# 实现FTP客户端-C/S开发框架
MQ消息队列（5）C#利用RabbitMQ实现消息订阅与发布-C/S开发框架
C# Image图片格式转换(gif/jpg/png/bmp)-C/S开发框架
C# OOP编程模拟做早餐探索同步异步机制-C/S开发框架
理解C#.NET泛型运作原理-C/S开发框架
C#.NET理解Task和async await原理-C/S开发框架
C#.NET其他程序集访问Internal类-C/S开发框架
C#DataTable(转List /JSON/字典互转)-C/S开发框架
C# C/S架构软件自动升级程序Winform+多数据库(MySQL,MsSQL,Oracle)-C/S开发框架
Visual Studio 2019 (C#/.NET)安装教程-C/S开发框架
C# C/S开发框架新增数据窗体

旗舰版V5.1
(作者推荐)

轻量框架V2.1
(2021 release)