public static bool ChangeRenderToUVRenderer(IRasterLayer irasterLayer_0, string string_0)
{
bool flag;
bool flag3;
IRaster raster = irasterLayer_0.Raster;
IRasterBand band = (raster as IRasterBandCollection).Item(0);
band.HasTable(out flag);
if (!flag)
{
return(false);
}
ITable attributeTable = band.AttributeTable;
int pCount = attributeTable.RowCount(null);
IRandomColorRamp ramp = new RandomColorRamp
{
Size = pCount,
Seed = 100
};
ramp.CreateRamp(out flag3);
IRasterUniqueValueRenderer renderer = new RasterUniqueValueRenderer();
IRasterRenderer renderer2 = renderer as IRasterRenderer;
renderer2.Raster = raster;
renderer2.Update();
renderer.HeadingCount = 1;
renderer.set_Heading(0, "All Data Values");
renderer.set_ClassCount(0, pCount);
renderer.Field = string_0;
int index = attributeTable.FindField(string_0);
for (int i = 0; i < pCount; i++)
{
object obj2 = attributeTable.GetRow(i).get_Value(index);
renderer.AddValue(0, i, obj2);
renderer.set_Label(0, i, obj2.ToString());
ISimpleFillSymbol symbol = new SimpleFillSymbol
{
Color = ramp.get_Color(i)
};
renderer.set_Symbol(0, i, symbol as ISymbol);
}
renderer2.Update();
irasterLayer_0.Renderer = renderer as IRasterRenderer;
return(true);
}
private void UniqueValueRender(ILayer pLayerR)
{
//Get raster input from layer
IRasterLayer pRLayer = (IRasterLayer)pLayerR;
IRaster pRaster = pRLayer.Raster;
//Get the number of rows from raster table
ITable pTable;
IRasterBand pBand;
IRasterBandCollection pBandCol;
pBandCol = (IRasterBandCollection)pRaster;
pBand = pBandCol.Item(0);
bool TableExist;
pBand.HasTable(out TableExist);
if (TableExist == false)
{
return;
}
pTable = pBand.AttributeTable;
int NumOfValues;
NumOfValues = pTable.RowCount(null);
//Specified a field and get the field index for the specified field to be rendered.
int FieldIndex;
string FieldName;
//Value is the default field, you can specify other field here
FieldName = "Value";
FieldIndex = pTable.FindField(FieldName);
IColorRamp MyColorRamp = UniqueValueRandomColorRamp(NumOfValues, 100);
ISimpleFillSymbol pFSymbol;
//Create UniqueValue renderer and QI RasterRenderer
IRasterUniqueValueRenderer pUVRen = new RasterUniqueValueRenderer();
IRasterRenderer pRasRen;
pRasRen = (IRasterRenderer)pUVRen;
//Connect the renderer and the raster
pRasRen.Raster = pRaster;
pRasRen.Update();
//Set UniqueValue renerer
pUVRen.HeadingCount = 1; //' Use one heading
pUVRen.set_Heading(0, "All Data Values");
pUVRen.set_ClassCount(0, NumOfValues);
pUVRen.Field = FieldName;
int i;
IRow pRow;
object LabelValue;
for (i = 0; i < NumOfValues; i++)
{
//Get a row from the table
pRow = pTable.GetRow(i);
LabelValue = pRow.get_Value(FieldIndex);
pUVRen.AddValue(0, i, LabelValue);//Get a row from the table
pUVRen.set_Label(0, i, Convert.ToString(LabelValue));
pFSymbol = new SimpleFillSymbol();
pFSymbol.Color = MyColorRamp.get_Color(i);
pUVRen.set_Symbol(0, i, (ISymbol)pFSymbol);
}
//Update render and refresh layer
pRasRen.Update();
pRLayer.Renderer = (IRasterRenderer)pUVRen;
}
