c#,分类渲染,IClassBreaksRenderer,报错,内有代码

<P>public static void Render(IFeatureLayer Layer, string FiledName)<BR>  {</P>
<P>   ITable pTable ; <BR>   IClassify pClassify ; <BR>   ITableHistogram pTableHistogram ; <BR>   IHistogram pHistogram ; <BR>   object dataFrequency ; <BR>   object dataValues ; <BR>   IGeoFeatureLayer pGeoFeatureLayer = Layer as IGeoFeatureLayer; <BR>   pTable = pGeoFeatureLayer as ITable;<BR>   pTableHistogram = new TableHistogram() as ITableHistogram;<BR>   pHistogram = pTableHistogram as IHistogram;</P>
<P>   pTableHistogram.Field = FiledName;<BR>   pTableHistogram.Table = pTable;<BR>   pHistogram.GetHistogram(out dataValues, out dataFrequency);</P>
<P>   pClassify = new EqualInterval() as IClassify;<BR>   pClassify.SetHistogramData(dataValues, dataFrequency);</P>
<P>   Double[] Classes ; <BR>   long ClassesCount ; <BR>   int numDesiredClasses = 9; <BR>   pClassify.Classify(ref numDesiredClasses);  <BR>   Classes = pClassify.ClassBreaks as double[];<BR>   ClassesCount = Classes.Length;</P>
<P>   IClassBreaksRenderer pClassBreaksRenderer ; </P>
<P>   pClassBreaksRenderer = new ClassBreaksRenderer();<BR>   pClassBreaksRenderer.Field = FiledName;<BR>   pClassBreaksRenderer.BreakCount = (int)ClassesCount;<BR>   pClassBreaksRenderer.SortClassesAscending = true;<BR>   <BR>   IColor pFromColor = new RgbColor();<BR>   pFromColor.RGB = 255;</P>
<P>   IColor pToColor ; <BR>   pToColor = new RgbColor();<BR>   pToColor.RGB = 200;</P>
<P>   IAlgorithmicColorRamp pRamp ; <BR>   IEnumColors pEnumColors ; <BR>   bool ok ;</P>
<P>   pRamp = new AlgorithmicColorRamp();<BR>   pRamp.Algorithm = ESRI.ArcGIS.Display.esriColorRampAlgorithm.esriHSVAlgorithm;<BR>   pRamp.FromColor = pFromColor;<BR>   pRamp.ToColor = pToColor;<BR>   pRamp.Size = (int)ClassesCount;<BR>   pRamp.CreateRamp(out ok);<BR>   pEnumColors = pRamp.Colors;</P>
<P>   IColor pColor ; <BR>   ISimpleFillSymbol pFillSymbol ; <BR>   long breakIndex ;</P>
<P>   for( breakIndex = 0 ; breakIndex < ClassesCount;breakIndex++)<BR>   {</P>
<P>    pColor = pEnumColors.Next();<BR>    pFillSymbol = new SimpleFillSymbol();<BR>    pFillSymbol.Color = pColor;<BR>    pClassBreaksRenderer.set_Symbol((int)breakIndex, pFillSymbol as ISymbol);<BR>    double d =Classes[breakIndex];<BR>    pClassBreaksRenderer.set_Break((int)breakIndex,d);</P>
<P>   }</P>
<P>   pGeoFeatureLayer.Renderer = pClassBreaksRenderer as IFeatureRenderer;<BR>  }<BR>  </P>
<P>  public static void SetLabel(IFeatureLayer pFeatureLayer,string FieldName) <BR>  {  <BR>   IGeoFeatureLayer pLayer = pFeatureLayer as IGeoFeatureLayer; <BR>   pLayer.DisplayField = "YaLi"; <BR>   pLayer.ShowTips = true ;<BR>   IRgbColor pColorFont  = new RgbColor();<BR>   pColorFont.Red = 255; <BR>   pColorFont.Green = 100;<BR>   pColorFont.Blue = 100;<BR>   IFormattedTextSymbol pText ;  <BR>   pText = new TextSymbol() ;<BR>   pText.Color = pColorFont ;<BR>   IAnnotateLayerPropertiesCollection pAnnoPropsCollection = new AnnotateLayerPropertiesCollection ();<BR>   pAnnoPropsCollection.Clear();<BR>   ILabelEngineLayerProperties pLabelEngine  = new LabelEngineLayerProperties() as ILabelEngineLayerProperties;<BR>   pLabelEngine.Expression = "["+FieldName+"]";<BR>   pLabelEngine.Symbol = pText ;<BR>   IAnnotateLayerProperties pAnnoLayerProps = pLabelEngine as IAnnotateLayerProperties;<BR>   //   pAnnoLayerProps.WhereClause = "(YaLi > 0)" ;<BR>   pAnnoPropsCollection.Add(pAnnoLayerProps);<BR>   pLayer.AnnotationProperties = pAnnoPropsCollection ;<BR>   pLayer.DisplayAnnotation = true ;</P>
<P>  } </P>


<P>pClassify.Classify(ref numDesiredClasses);  </P>
<P>Classes = pClassify.ClassBreaks as double[];</P>
<P>报错<BR></P>

<P>希望高手能够进来看看这个  帮忙解决   我也正在做有关这个的现在~~~~~~~~~~~~</P>

帮助里有一个VB的  不知道你看过没呢??

<P>.NET不支持IClassify,改为IClassifyGEN即可!</P>
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