//分级颜色渲染
public static ESRI.ArcGIS.Carto.IFeatureRenderer CreateBreakColorRenderer(esriSymbologyStyleClass _SymbologyStyleClass)
{
ESRI.ArcGIS.Carto.IClassBreaksRenderer pBreakRenderer = new ESRI.ArcGIS.Carto.ClassBreaksRendererClass();
pBreakRenderer.Field = "<NONE>";
pBreakRenderer.MinimumBreak = 0;
pBreakRenderer.BreakCount = 0;
pBreakRenderer.BackgroundSymbol = null;
ESRI.ArcGIS.Carto.IClassBreaksUIProperties pUIProp = pBreakRenderer as ESRI.ArcGIS.Carto.IClassBreaksUIProperties;
pUIProp.ColorRamp = "";
return(pBreakRenderer as ESRI.ArcGIS.Carto.IFeatureRenderer);
}
public static ESRI.ArcGIS.Carto.IFeatureRenderer LoadRendererFromByte(byte[] _RendererValue, string _RendererType)
{
if (_RendererValue == null || _RendererValue.Length == 0)
{
return(null);
}
try
{
enumRendererType pRendererType = (enumRendererType)Enum.Parse(typeof(enumRendererType), _RendererType);
ESRI.ArcGIS.Carto.IFeatureRenderer pRenderer = null;
switch (pRendererType)
{
case enumRendererType.SimpleRenderer:
pRenderer = new ESRI.ArcGIS.Carto.SimpleRendererClass();
break;
case enumRendererType.UniqueValueRenderer:
pRenderer = new ESRI.ArcGIS.Carto.UniqueValueRendererClass();
break;
case enumRendererType.BreakColorRenderer:
pRenderer = new ESRI.ArcGIS.Carto.ClassBreaksRendererClass();
break;
case enumRendererType.BreakSizeRenderer:
pRenderer = new ESRI.ArcGIS.Carto.ClassBreaksRendererClass();
break;
}
if (pRenderer == null)
{
return(null);
}
IMemoryBlobStreamVariant pMemoryBlobStreamVariant = new MemoryBlobStreamClass();
pMemoryBlobStreamVariant.ImportFromVariant((object)_RendererValue);
IStream pStream = pMemoryBlobStreamVariant as IStream;
IPersistStream pPersistStream = pRenderer as IPersistStream;
pPersistStream.Load(pStream);
pRenderer = pPersistStream as ESRI.ArcGIS.Carto.IFeatureRenderer;
return(pRenderer);
}
catch (Exception ex)
{
return(null);
}
}
//分级大小渲染
public static ESRI.ArcGIS.Carto.IFeatureRenderer CreateBreakSizeRenderer(esriSymbologyStyleClass _SymbologyStyleClass)
{
ESRI.ArcGIS.Carto.IClassBreaksRenderer pBreakRenderer = new ESRI.ArcGIS.Carto.ClassBreaksRendererClass();
pBreakRenderer.Field = "<NONE>";
pBreakRenderer.MinimumBreak = 0;
pBreakRenderer.BreakCount = 0;
if (_SymbologyStyleClass == esriSymbologyStyleClass.esriStyleClassFillSymbols)
{
pBreakRenderer.BackgroundSymbol = ModuleCommon.CreateSymbol(esriSymbologyStyleClass.esriStyleClassMarkerSymbols) as IFillSymbol;
}
else
{
pBreakRenderer.BackgroundSymbol = null;
}
return(pBreakRenderer as ESRI.ArcGIS.Carto.IFeatureRenderer);
}
