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ProPortialRender.cs
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ProPortialRender.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using ESRI.ArcGIS.esriSystem;
using ESRI.ArcGIS.SystemUI;
using ESRI.ArcGIS.Geometry;
using ESRI.ArcGIS.Display;
using ESRI.ArcGIS.Geodatabase;
using ESRI.ArcGIS.Carto;
using ESRI.ArcGIS.Controls;
using ESRI.ArcGIS.GlobeCore;
using ESRI.ArcGIS.DataSourcesFile;
using ESRI.ArcGIS.DataSourcesGDB;
namespace EngineApplication
{
public class ProPortialRender
{
public ProPortialRender(AxMapControl pMapcontrol, IFeatureLayer pFtLayer, string pFieldName)
{
IGeoFeatureLayer pGeo = pFtLayer as IGeoFeatureLayer;
IProportionalSymbolRenderer pProRender = new ProportionalSymbolRendererClass();
pProRender.Field = pFieldName;
pProRender.ValueUnit = esriUnits.esriUnknownUnits;
ISimpleMarkerSymbol pMarkerSymbol = new SimpleMarkerSymbolClass();
pMarkerSymbol.Style = esriSimpleMarkerStyle.esriSMSCircle;
pMarkerSymbol.Size = 2;
pMarkerSymbol.Color = GetRGBColor(255, 0, 0);
pProRender.MinSymbol = pMarkerSymbol as ISymbol;
IDataStatistics pDataStat = new DataStatisticsClass();
IFeatureCursor pFtCursor = pFtLayer.FeatureClass.Search(null, false);
pDataStat.Cursor = pFtCursor as ICursor;
pDataStat.Field = pFieldName;
pProRender.MinDataValue = pDataStat.Statistics.Minimum;
pProRender.MaxDataValue = pDataStat.Statistics.Maximum;
IFillSymbol pFillS = new SimpleFillSymbolClass();
pFillS.Color = GetRGBColor(239, 228, 190);
ILineSymbol pLineS = new SimpleLineSymbolClass();
pLineS.Width = 2;
pFillS.Outline = pLineS;
ISimpleFillSymbol pSFillS = pFillS as ISimpleFillSymbol;
pSFillS.Color = GetRGBColor(100, 100, 253);
pProRender.BackgroundSymbol = pFillS;
pGeo.Renderer = pProRender as IFeatureRenderer;
pMapcontrol.ActiveView.Refresh();
}
public IRgbColor GetRGBColor(int r, int g, int b)
{
IRgbColor pRGB;
pRGB = new RgbColorClass();
pRGB.Red = r;
pRGB.Green = g;
pRGB.Blue = b;
return pRGB;
}
}
}