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在C#中应用MapObjects(渲染效果)

楼主^#

更多发布于：2004-09-30 12:45

把MapObjects中的各种渲染效果（类似MapX专题图，但不一样）都试了试，下面附上源代码，如果那位有不懂的地方请自己琢磨，哈哈…
 
代码如下：
 
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
 
namespace DbInMo
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class 渲染示例 : System.Windows.Forms.Form
 {
 private AxMapObjects2.AxMap map;
 private System.Windows.Forms.Button 直方图;
 private System.Windows.Forms.Button 饼图;
 private System.Windows.Forms.Button 点密度;
 private System.Windows.Forms.Button 按值渲染;
 private System.Windows.Forms.Button 分类渲染;
 private System.Windows.Forms.Button Z值渲染;
 private System.Windows.Forms.Button 组渲染;
 private System.Windows.Forms.Button 退出;
 private System.Windows.Forms.Panel 操作板;
 private System.Windows.Forms.Button 删除所有渲染;
 private System.Windows.Forms.Panel panel1;
 private System.Windows.Forms.Button 全图;
 private System.Windows.Forms.Button 拖动;
 private System.Windows.Forms.Button 缩小;
 private System.Windows.Forms.Button 放大;
 private System.Windows.Forms.Panel 分隔符;
 private System.Windows.Forms.Button 标注渲染;
 /// <summary>
 /// 必需的设计器变量。
 /// </summary>
 private System.ComponentModel.Container components = null;
 
 public 渲染示例()
 {
 //
 // Windows 窗体设计器支持所必需的
 //
 InitializeComponent();
 
 //
 // TOD 在 InitializeComponent 调用后添加任何构造函数代码
 //
 }
 
 /// <summary>
 /// 清理所有正在使用的资源。
 /// </summary>
 protected override void Dispose( bool disposing )
 {
 if( disposing )
 {
 if (components != null) 
 {
 components.Dispose();
 }
 }
 base.Dispose( disposing );
 }
 
 #region Windows 窗体设计器生成的代码
 /// <summary>
 /// 设计器支持所需的方法 - 不要使用代码编辑器修改
 /// 此方法的内容。
 /// </summary>
 private void InitializeComponent()
 {
 System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(渲染示例));
 this.map = new AxMapObjects2.AxMap();
 this.操作板 = new System.Windows.Forms.Panel();
 this.直方图 = new System.Windows.Forms.Button();
 this.饼图 = new System.Windows.Forms.Button();
 this.点密度 = new System.Windows.Forms.Button();
 this.按值渲染 = new System.Windows.Forms.Button();
 this.分类渲染 = new System.Windows.Forms.Button();
 this.Z值渲染 = new System.Windows.Forms.Button();
 this.组渲染 = new System.Windows.Forms.Button();
 this.退出 = new System.Windows.Forms.Button();
 this.标注渲染 = new System.Windows.Forms.Button();
 this.删除所有渲染 = new System.Windows.Forms.Button();
 this.panel1 = new System.Windows.Forms.Panel();
 this.全图 = new System.Windows.Forms.Button();
 this.拖动 = new System.Windows.Forms.Button();
 this.缩小 = new System.Windows.Forms.Button();
 this.放大 = new System.Windows.Forms.Button();
 this.分隔符 = new System.Windows.Forms.Panel();
 ((System.ComponentModel.ISupportInitialize)(this.map)).BeginInit();
 this.操作板.SuspendLayout();
 this.SuspendLayout();
 // 
 // map
 // 
 this.map.Dock = System.Windows.Forms.DockStyle.Fill;
 this.map.Location = new System.Drawing.Point(0, 0);
 this.map.Name = "map";
 this.map.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("map.OcxState")));
 this.map.Size = new System.Drawing.Size(616, 429);
 this.map.TabIndex = 0;
 this.map.MouseDownEvent += new AxMapObjects2._DMapEvents_MouseDownEventHandler(this.map_MouseDownEvent);
 // 
 // 操作板
 // 
 this.操作板.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
 this.操作板.Controls.Add(this.删除所有渲染);
 this.操作板.Controls.Add(this.panel1);
 this.操作板.Controls.Add(this.全图);
 this.操作板.Controls.Add(this.拖动);
 this.操作板.Controls.Add(this.缩小);
 this.操作板.Controls.Add(this.放大);
 this.操作板.Controls.Add(this.分隔符);
 this.操作板.Controls.Add(this.标注渲染);
 this.操作板.Controls.Add(this.退出);
 this.操作板.Controls.Add(this.组渲染);
 this.操作板.Controls.Add(this.Z值渲染);
 this.操作板.Controls.Add(this.分类渲染);
 this.操作板.Controls.Add(this.按值渲染);
 this.操作板.Controls.Add(this.点密度);
 this.操作板.Controls.Add(this.饼图);
 this.操作板.Controls.Add(this.直方图);
 this.操作板.Dock = System.Windows.Forms.DockStyle.Right;
 this.操作板.Location = new System.Drawing.Point(496, 0);
 this.操作板.Name = "操作板";
 this.操作板.Size = new System.Drawing.Size(120, 429);
 this.操作板.TabIndex = 1;
 // 
 // 直方图
 // 
 this.直方图.Dock = System.Windows.Forms.DockStyle.Top;
 this.直方图.Location = new System.Drawing.Point(0, 0);
 this.直方图.Name = "直方图";
 this.直方图.Size = new System.Drawing.Size(116, 24);
 this.直方图.TabIndex = 0;
 this.直方图.Text = "直方图";
 this.直方图.Click += new System.EventHandler(this.直方图_Click);
 // 
 // 饼图
 // 
 this.饼图.Dock = System.Windows.Forms.DockStyle.Top;
 this.饼图.Location = new System.Drawing.Point(0, 24);
 this.饼图.Name = "饼图";
 this.饼图.Size = new System.Drawing.Size(116, 24);
 this.饼图.TabIndex = 1;
 this.饼图.Text = "饼图";
 this.饼图.Click += new System.EventHandler(this.饼图_Click);
 // 
 // 点密度
 // 
 this.点密度.Dock = System.Windows.Forms.DockStyle.Top;
 this.点密度.Location = new System.Drawing.Point(0, 48);
 this.点密度.Name = "点密度";
 this.点密度.Size = new System.Drawing.Size(116, 23);
 this.点密度.TabIndex = 2;
 this.点密度.Text = "点密度";
 this.点密度.Click += new System.EventHandler(this.点密度_Click);
 // 
 // 按值渲染
 // 
 this.按值渲染.Dock = System.Windows.Forms.DockStyle.Top;
 this.按值渲染.Location = new System.Drawing.Point(0, 71);
 this.按值渲染.Name = "按值渲染";
 this.按值渲染.Size = new System.Drawing.Size(116, 23);
 this.按值渲染.TabIndex = 3;
 this.按值渲染.Text = "按值渲染";
 this.按值渲染.Click += new System.EventHandler(this.按值渲染_Click);
 // 
 // 分类渲染
 // 
 this.分类渲染.Dock = System.Windows.Forms.DockStyle.Top;
 this.分类渲染.Location = new System.Drawing.Point(0, 94);
 this.分类渲染.Name = "分类渲染";
 this.分类渲染.Size = new System.Drawing.Size(116, 23);
 this.分类渲染.TabIndex = 4;
 this.分类渲染.Text = "分类渲染";
 this.分类渲染.Click += new System.EventHandler(this.分类渲染_Click);
 // 
 // Z值渲染
 // 
 this.Z值渲染.Dock = System.Windows.Forms.DockStyle.Top;
 this.Z值渲染.Location = new System.Drawing.Point(0, 117);
 this.Z值渲染.Name = "Z值渲染";
 this.Z值渲染.Size = new System.Drawing.Size(116, 23);
 this.Z值渲染.TabIndex = 5;
 this.Z值渲染.Text = "Z值渲染";
 this.Z值渲染.Click += new System.EventHandler(this.Z值渲染_Click);
 // 
 // 组渲染
 // 
 this.组渲染.Dock = System.Windows.Forms.DockStyle.Top;
 this.组渲染.Location = new System.Drawing.Point(0, 140);
 this.组渲染.Name = "组渲染";
 this.组渲染.Size = new System.Drawing.Size(116, 23);
 this.组渲染.TabIndex = 6;
 this.组渲染.Text = "组渲染";
 this.组渲染.Click += new System.EventHandler(this.组渲染_Click);
 // 
 // 退出
 // 
 this.退出.Dock = System.Windows.Forms.DockStyle.Bottom;
 this.退出.Location = new System.Drawing.Point(0, 402);
 this.退出.Name = "退出";
 this.退出.Size = new System.Drawing.Size(116, 23);
 this.退出.TabIndex = 7;
 this.退出.Text = "退出";
 this.退出.Click += new System.EventHandler(this.退出_Click);
 // 
 // 标注渲染
 // 
 this.标注渲染.Dock = System.Windows.Forms.DockStyle.Top;
 this.标注渲染.Location = new System.Drawing.Point(0, 163);
 this.标注渲染.Name = "标注渲染";
 this.标注渲染.Size = new System.Drawing.Size(116, 23);
 this.标注渲染.TabIndex = 7;
 this.标注渲染.Text = "标注渲染";
 this.标注渲染.Click += new System.EventHandler(this.标注渲染_Click);
 // 
 // 删除所有渲染
 // 
 this.删除所有渲染.Dock = System.Windows.Forms.DockStyle.Top;
 this.删除所有渲染.Location = new System.Drawing.Point(0, 319);
 this.删除所有渲染.Name = "删除所有渲染";
 this.删除所有渲染.Size = new System.Drawing.Size(116, 23);
 this.删除所有渲染.TabIndex = 22;
 this.删除所有渲染.Text = "删除所有渲染";
 this.删除所有渲染.Click += new System.EventHandler(this.删除所有渲染_Click);
 // 
 // panel1
 // 
 this.panel1.Dock = System.Windows.Forms.DockStyle.Top;
 this.panel1.Location = new System.Drawing.Point(0, 299);
 this.panel1.Name = "panel1";
 this.panel1.Size = new System.Drawing.Size(116, 20);
 this.panel1.TabIndex = 21;
 // 
 // 全图
 // 
 this.全图.Dock = System.Windows.Forms.DockStyle.Top;
 this.全图.Location = new System.Drawing.Point(0, 276);
 this.全图.Name = "全图";
 this.全图.Size = new System.Drawing.Size(116, 23);
 this.全图.TabIndex = 20;
 this.全图.Text = "全图";
 this.全图.Click += new System.EventHandler(this.全图_Click);
 // 
 // 拖动
 // 
 this.拖动.Dock = System.Windows.Forms.DockStyle.Top;
 this.拖动.Location = new System.Drawing.Point(0, 253);
 this.拖动.Name = "拖动";
 this.拖动.Size = new System.Drawing.Size(116, 23);
 this.拖动.TabIndex = 19;
 this.拖动.Text = "拖动";
 this.拖动.Click += new System.EventHandler(this.拖动_Click);
 // 
 // 缩小
 // 
 this.缩小.Dock = System.Windows.Forms.DockStyle.Top;
 this.缩小.Location = new System.Drawing.Point(0, 230);
 this.缩小.Name = "缩小";
 this.缩小.Size = new System.Drawing.Size(116, 23);
 this.缩小.TabIndex = 18;
 this.缩小.Text = "缩小";
 this.缩小.Click += new System.EventHandler(this.缩小_Click);
 // 
 // 放大
 // 
 this.放大.Dock = System.Windows.Forms.DockStyle.Top;
 this.放大.Location = new System.Drawing.Point(0, 207);
 this.放大.Name = "放大";
 this.放大.Size = new System.Drawing.Size(116, 23);
 this.放大.TabIndex = 17;
 this.放大.Text = "放大";
 this.放大.Click += new System.EventHandler(this.放大_Click);
 // 
 // 分隔符
 // 
 this.分隔符.Dock = System.Windows.Forms.DockStyle.Top;
 this.分隔符.Location = new System.Drawing.Point(0, 186);
 this.分隔符.Name = "分隔符";
 this.分隔符.Size = new System.Drawing.Size(116, 21);
 this.分隔符.TabIndex = 16;
 // 
 // 渲染示例
 // 
 this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
 this.ClientSize = new System.Drawing.Size(616, 429);
 this.Controls.Add(this.操作板);
 this.Controls.Add(this.map);
 this.Name = "渲染示例";
 this.Text = "渲染示例";
 this.WindowState = System.Windows.Forms.FormWindowState.Maximized;
 ((System.ComponentModel.ISupportInitialize)(this.map)).EndInit();
 this.操作板.ResumeLayout(false);
 this.ResumeLayout(false);
 
 }
 #endregion
 
 /// <summary>
 /// 应用程序的主入口点。
 /// </summary>
 [STAThread]
 static void Main() 
 {
 Application.Run(new 渲染示例());
 }
 
 /// <summary>
 /// 退出系统
 /// </summary>
 private void 退出_Click(object sender, System.EventArgs e)
 {
 this.Close();
 }
 
 /// <summary>
 /// 图表渲染，值方图
 /// </summary>
 private void 直方图_Click(object sender, System.EventArgs e)
 {
 //直方图的例子中使用Lakers图层
 //
 //定义图标渲染变量
 MapObjects2.ChartRenderer cr = new MapObjects2.ChartRendererClass();
 //设置渲染类型为直方图
 cr.ChartType = MapObjects2.ChartTypeConstants.moBar;
 //设置直方图显示的字段个数为两个，就是直方图显示两个柱子
 cr.FieldCount = 2;
 //设置第一个字段，请参看lakes.dbf
 cr.set_Field(0,"SURF_ELEV");
 //设置这个直方图的柱子颜色为红色
 cr.set_Color(0,(uint)MapObjects2.ColorConstants.moRed);
 //设置第二个柱子
 cr.set_Field(1,"DEPTH");
 cr.set_Color(1,(uint)MapObjects2.ColorConstants.moGreen);
 MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)(map.Layers.Item("lakes"));
 lyr.Renderer = cr;
 //使用Refresh()刷新老也是刷新不好，正没办法。。。，设为全图倒是不错的注意，^_^
 map.Refresh();
 }

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发布于：2004-09-30 12:46

/// <summary> /// 全图视野 /// </summary> private void 全图_Click(object sender, System.EventArgs e) { map.Extent = map.FullExtent; } /// <summary> /// 拖动，只设置图标 /// </summary> private void 拖动_Click(object sender, System.EventArgs e) { map.MousePointer = MapObjects2.MousePointerConstants.moPan; } /// <summary> /// 缩小，只设置图标 /// </summary> private void 缩小_Click(object sender, System.EventArgs e) { map.MousePointer = MapObjects2.MousePointerConstants.moZoomOut; } /// <summary> /// 放大，只设置图标 /// </summary> private void 放大_Click(object sender, System.EventArgs e) { map.MousePointer = MapObjects2.MousePointerConstants.moZoomIn; } /// <summary> /// 鼠标按下时间，处理地图放大、缩小、拖动等。 /// </summary> private void map_MouseDownEvent(object sender, AxMapObjects2._DMapEvents_MouseDownEvent e) { MapObjects2.Rectangle rect; MapObjects2.Point pt = map.ToMapPoint(e.x,e.y); if(e.button == 2)//右键点击取消 { map.MousePointer = MapObjects2.MousePointerConstants.moDefault; } if(map.MousePointer == MapObjects2.MousePointerConstants.moPan)//拖动 { map.Pan(); } else if(map.MousePointer == MapObjects2.MousePointerConstants.moZoomIn)//放大 { rect = map.TrackRectangle(); if(rect == null|| (rect.Width < 0.00005) || (rect.Height < 0.00005)) { rect = map.Extent; rect.ScaleRectangle(0.6667); rect.Offset(-(rect.Center.X - pt.X),-(rect.Center.Y - pt.Y)); } map.Extent = rect; } else if(map.MousePointer == MapObjects2.MousePointerConstants.moZoomOut)//缩小 { rect = map.TrackRectangle(); if ((null == rect) || (rect.Width < 0.00005) || (rect.Height < 0.00005)) { rect = map.Extent; rect.ScaleRectangle(1.5); rect.Offset(-(rect.Center.X - pt.X),-(rect.Center.Y - pt.Y)); } else { double dRate = map.Extent.Width / rect.Width * 10; rect.ScaleRectangle(dRate); } map.Extent = rect; } } /// <summary> /// 图表渲染，使用饼图 /// </summary> private void 饼图_Click(object sender, System.EventArgs e) { //饼图的例子中使用Lakers图层 //过程和直方图一样 // //定义图标渲染变量 MapObjects2.ChartRenderer cr = new MapObjects2.ChartRendererClass(); //设置渲染类型为饼图 cr.ChartType = MapObjects2.ChartTypeConstants.moPie; //设置饼图显示的字段个数为两个，就是饼图显示两半 cr.FieldCount = 2; //设置第一个字段，请参看lakes.dbf cr.set_Field(0,"SURF_ELEV"); //设置这个饼图的一半颜色为红色 cr.set_Color(0,(uint)MapObjects2.ColorConstants.moRed); //设置第二半 cr.set_Field(1,"DEPTH"); cr.set_Color(1,(uint)MapObjects2.ColorConstants.moGreen); //添加到地图上 MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)(map.Layers.Item("lakes")); lyr.Renderer = cr; //刷新 map.Refresh(); } /// <summary>

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发布于：2004-09-30 12:47

/// 点密度渲染 /// </summary> private void 点密度_Click(object sender, System.EventArgs e) { //点密度的例子中使用lakes图层 // //定义点密度渲染变量 MapObjects2.DotDensityRenderer ddr = new MapObjects2.DotDensityRendererClass(); //设置渲染的数据字段，请参看lakes.dbf ddr.Field = "DEPTH"; //点大小 ddr.DotSize = 3; //点颜色 ddr.DotColor = (uint)MapObjects2.ColorConstants.moBlue; ddr.DotValue = 1; ddr.DrawBackground = true; //添加到地图上 MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)(map.Layers.Item("lakes")); lyr.Renderer = ddr; //刷新 map.Refresh(); } /// <summary> /// 按值渲染 /// </summary> private void 按值渲染_Click(object sender, System.EventArgs e) { //按值渲染的例子中使用country图层，这里利用按值渲染，将每个国家用不同的颜色显示 // //字符串s变量，很像Delphi中的TStringList，^_^ MapObjects2.Strings strs = new MapObjects2.StringsClass(); //图层变量，引用country图层 MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)map.Layers.Item("country"); //Recordset对象，我将在以后的文章中陆续讲解关于MapObjects2.2中使用数据集变量的内容！！！ //使用方法大致与VB中对数据表的操作差不多。 MapObjects2.Recordset rc = lyr.Records; //这个循环获取所有国家的简称代码列表 while(!rc.EOF) { strs.Add(rc.Fields.Item("FIPS_CODE").ValueAsString); rc.MoveNext(); } //定义按值渲染对象 MapObjects2.ValueMapRenderer vmr = new MapObjects2.ValueMapRendererClass(); //将其添加到图层 lyr.Renderer = vmr; //设置渲染使用的字段，请参看country.dbf文件 vmr.Field = "FIPS_CODE"; //渲染的个数 vmr.ValueCount = strs.Count; //缺省值 vmr.UseDefault = true; MapObjects2.Symbol sym = vmr.DefaultSymbol; sym.Color = (uint)MapObjects2.ColorConstants.moYellow;//缺省颜色为黄色 //渲染过程 for(int i=0;i<vmr.ValueCount;i++) { vmr.set_Value((short)i,strs.Item((short)i)); } //刷新 map.Refresh(); } /// <summary> /// 分类渲染 /// </summary> private void 分类渲染_Click(object sender, System.EventArgs e) { //分类渲染的例子使用country图层 // //图层变量引用cities层 MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)(map.Layers.Item("cities")); //定义分类渲染变量 MapObjects2.ClassBreaksRenderer cbr = new MapObjects2.ClassBreaksRendererClass(); //添加到地图 lyr.Renderer = cbr; //设置符号类型为点，也可使用其他类型，请自己试验，方法大概都差不多 cbr.SymbolType = MapObjects2.SymbolTypeConstants.moPointSymbol; //设置字段，请参看cities.dbf文件 cbr.Field = "POPULATION"; //Statistics对象经常配合分类渲染使用，他表示用一个Recordset对象的CalculateStatistics方法 // 对一个数值字段的统计计算结果 MapObjects2.Statistics stat = lyr.Records.CalculateStatistics("POPULATION"); //Mean——平均值，StdDev——均方差 double fbv = stat.Mean - (stat.StdDev * 3); for(int i=0;i<6;i++) { if((fbv >= stat.Min);;fbv <= stat.Max) { //分类个数，依次加一 cbr.BreakCount = (short)(cbr.BreakCount + 1); //设置分类 cbr.set_Break((short)(cbr.BreakCount - 1),fbv); } fbv += stat.StdDev; } //SizeSymbols方法制定头尾的大小用来表现点特征大小渐进效果 cbr.SizeSymbols(3,8); //RampColors方法设置颜色从白色到红色的渐进显示 cbr.RampColors((uint)MapObjects2.ColorConstants.moWhite,(uint)MapObjects2.ColorConstants.moRed); //刷新 map.Refresh(); } /// <summary> /// Z值渲染 /// </summary> private void Z值渲染_Click(object sender, System.EventArgs e) { //本来想好好搞搞，可是我找不到带有Z值的地图，哈哈，认了吧，下面给出基本的语句，有兴趣的 //兄弟姐妹们可以自己试试// MapObjects2.ZRenderer zr = new MapObjects2.ZRendererClass();// //Z值分成几部分？// zr.BreakCount = 2;// //设置各个部分的分界线// zr.set_Break(0,100);// zr.set_Break(1,1000);// //设置特征类型// zr.SymbolType = MapObjects2.SymbolTypeConstants.moPointSymbol;// MapObjects2.Symbol sym;// for(short i=0;i<zr.BreakCount;i++)// {// //获取特征// sym = zr.get_Symbol(i);// //设置特征属性，定义一个颜色数组，将不同特征设置不同颜色，效果会明显些// sym.Color = (uint)MapObjects2.ColorConstants.moRed;// sym.Size = 6;// sym.Style = MapObjects2.MarkerStyleConstants.moTriangleMarker;// }// //添加到地图// MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)map.Layers.Item("带有Z值的图层名称");// lyr.Renderer = zr;// //刷新// map.Refresh(); } /// <summary>

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发布于：2004-09-30 12:47

/// 组渲染 /// </summary> private void 组渲染_Click(object sender, System.EventArgs e) { //组渲染其实就是组合渲染，一般定义多个渲染方式，然后使用如下的语句进行组合 MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)map.Layers.Item("country"); //标注渲染 MapObjects2.LabelRenderer lr = new MapObjects2.LabelRendererClass(); lr.Field = "NAME"; lr.get_Symbol(0).Color = (uint)MapObjects2.ColorConstants.moBlack; lr.get_Symbol(0).Font.Size = 8; //按值渲染 MapObjects2.Strings strs = new MapObjects2.StringsClass(); MapObjects2.Recordset rc = lyr.Records; while(!rc.EOF) { strs.Add(rc.Fields.Item("FIPS_CODE").ValueAsString); rc.MoveNext(); } MapObjects2.ValueMapRenderer vmr = new MapObjects2.ValueMapRendererClass(); vmr.Field = "FIPS_CODE"; vmr.ValueCount = strs.Count; vmr.UseDefault = true; MapObjects2.Symbol sym = vmr.DefaultSymbol; sym.Color = (uint)MapObjects2.ColorConstants.moYellow; for(int i=0;i<vmr.ValueCount;i++) { vmr.set_Value((short)i,strs.Item((short)i)); } //将二者组合，添加到图层 MapObjects2.GroupRenderer gr = new MapObjects2.GroupRendererClass(); gr.Add(vmr); gr.Add(lr); lyr.Renderer = gr; map.Refresh(); } /// <summary> /// 删除所有渲染 /// </summary> private void 删除所有渲染_Click(object sender, System.EventArgs e) { MapObjects2.MapLayer lyr; for(int i=0;i<map.Layers.Count;i++) { lyr = (MapObjects2.MapLayer)map.Layers.Item(i); lyr.Renderer = new MapObjects2.LabelRendererClass(); map.Refresh(); } } /// <summary> /// 标注渲染 /// </summary> private void 标注渲染_Click(object sender, System.EventArgs e) { MapObjects2.MapLayer lyr = (MapObjects2.MapLayer)map.Layers.Item("cities"); MapObjects2.LabelRenderer lr = new MapObjects2.LabelRendererClass(); lr.Field = "NAME"; lr.get_Symbol(0).Color = (uint)MapObjects2.ColorConstants.moBlack; lr.get_Symbol(0).Font.Size = 8; lyr.Renderer = lr; map.Refresh(); } }}

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xinbo 路人甲注册日期2006-02-28 发帖数29 QQ 铜币192枚威望0点贡献值0点银元0个加关注写私信	4楼^# 发布于：2006-03-03 23:08 <img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" />
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发布于：2006-03-17 18:03

<img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em01.gif" /><img src="images/post/smile/dvbbs/em01.gif" /><img src="images/post/smile/dvbbs/em01.gif" /><img src="images/post/smile/dvbbs/em01.gif" />谢谢

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万里风云路人甲注册日期2005-01-20 发帖数16 QQ 铜币31枚威望0点贡献值0点银元0个加关注写私信	6楼^# 发布于：2006-08-14 15:42 <img src="images/post/smile/dvbbs/em01.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em03.gif" /><img src="images/post/smile/dvbbs/em05.gif" /><img src="images/post/smile/dvbbs/em06.gif" /><img src="images/post/smile/dvbbs/em07.gif" /><img src="images/post/smile/dvbbs/em08.gif" />
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在C#中应用MapObjects(渲染效果)

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