HELP - we need an expert please.... we lack experience to solve this problem

JMJJDJM

Sorry but we do not know how to fix this:

I pass the code that applies symbolization a layer of points with
ClassBreaksRenderer and "Quantities" and mode "Graduated Colors" from a .NET aplication, but at the end of the process, No way to update the table of contents.

If we use ArcMap, right click, properties on the layer and look at the symbolization form, ALL is perfect and if you click the OK button, all is well.
We refresh contents with
pMxDoc.UpdateContents()
and the activeView with
pMxDoc.ActiveView.Refresh()

Someone could tell us where we fail?

Code A is failing
--------------------------------
Dim pMxDoc As IMxDocument
Dim pLayer As ILayer
Dim pGeoLayer As IGeoFeatureLayer
Dim pFLayer As IFeatureLayer
Dim pFClass As IFeatureClass
Dim pRender As IClassBreaksRenderer
Dim pColor1 As IRgbColor
Dim pColor2 As IRgbColor
Dim pColor3 As IRgbColor
Dim i As Integer
'Dim pSFSym1 As ISimpleFillSymbol, pSFSym2 As ISimpleFillSymbol
Dim pSFSym1 As ISimpleMarkerSymbol, pSFSym2 As ISimpleMarkerSymbol
Dim pUIProperties As IClassBreaksUIProperties
Dim pRendererPropPage As IRendererPropertyPage
Dim pHistogram As IHistogram
Dim ptableHistogram As ITableHistogram
Dim pTable As ITable
Dim pClassify As IClassify
Dim classes() As Double
Dim dataValues() As Double, datafreq() As Integer
Dim pUIProp As IClassBreaksUIProperties
Dim fLR As IFeatureRenderer
Dim itemGal As IEnumStyleGalleryItem
Dim gallery As IStyleGallery
Dim gallery2 As IEnumStyleGalleryItem
Dim nom As String
Dim p1 As esriSimpleMarkerStyle

pMxDoc = m_pDoc
pLayer = pMxDoc.ActiveView.FocusMap.Layer(0)
pFLayer = pLayer

pFClass = pFLayer.FeatureClass
pTable = pFLayer

'ptableHistogram = New TableHistogram
'ptableHistogram.Field = "Valor"
'ptableHistogram.Table = pTable
'pHistogram = ptableHistogram
'pHistogram.GetHistogram(dataValues, datafreq)
'pClassify = New NaturalBreaks
'pClassify.SetHistogramData(dataValues, datafreq)

pRender = New ClassBreaksRenderer
pRender.Field = "Valor"
pRender.BreakCount = 2
pRender.MinimumBreak = 0
pRender.Break(0) = 249.9999
pRender.Break(1) = 5000

pUIProp = pRender
pUIProp.LowBreak(0) = 0
pUIProp.LowBreak(1) = 250

'pRender.Description(0) = "Cumple Legislación"
'pRender.Description(0) = "Incumple Legislación"
pRender.Label(0) = " < 250"
pRender.Label(1) = " >= 250"

pColor1 = New RgbColorClass
pColor1.RGB = System.Drawing.ColorTranslator.ToWin32(Color.Green Yellow)
pColor2 = New RgbColorClass
pColor2.RGB = System.Drawing.ColorTranslator.ToWin32(Color.Red)
pColor3 = New RgbColorClass
pColor3.RGB = System.Drawing.ColorTranslator.ToWin32(Color.Black )
Dim cc As IMarkerBackground

pSFSym1 = New SimpleMarkerSymbol
pSFSym1.Color = pColor1
pSFSym1.OutlineSize = 0.4
pSFSym1.OutlineColor = pColor3
pSFSym1.Size = 5
pSFSym1.Style = esriSimpleMarkerStyle.esriSMSSquare
pRender.Symbol(0) = pSFSym1

pSFSym2 = New SimpleMarkerSymbol
pSFSym2.Color = pColor2
pSFSym2.OutlineSize = 0.4
pSFSym2.OutlineColor = pColor3
pSFSym2.Size = 5
pSFSym2.Style = esriSimpleMarkerStyle.esriSMSCircle
pRender.Symbol(1) = pSFSym2

pRendererPropPage = New GraduatedColorPropertyPage
pGeoLayer = pFLayer
pGeoLayer.RendererPropertyPageClassID = pRendererPropPage.ClassID
pGeoLayer.Renderer = pRender
pGeoLayer.DisplayField = "Valor"
pGeoLayer.DisplayAnnotation = False
pMxDoc.ActiveView.PartialRefresh(esriViewDrawPhase .esriViewGeography, pLayer, Nothing)
pMxDoc.ActiveView.ContentsChanged()
pMxDoc.UpdateContents()
pMxDoc.ActiveView.Refresh()

---------------------------------------------------------------
Code B is running in VBA
-------------------------------------------------
Dim pMxDoc As IMxDocument
    Dim pFLayer As IGeoFeatureLayer
    Dim pFclass As IFeatureClass
    Dim pFeature As IFeature
    Dim pFCursor As IFeatureCursor
    Dim pRender As IClassBreaksRenderer
    Dim pTable As ITable
    Dim pGeoLayer As IGeoFeatureLayer
    Dim pColor1 As IRgbColor
    Dim pColor2 As IRgbColor
    Dim pColor3 As IRgbColor
    Dim pUIProperties As IClassBreaksUIProperties
   
    Set pMxDoc = Application.Document
    Set pFLayer = pMxDoc.ActiveView.FocusMap.Layer(0)
    Set pFclass = pFLayer.FeatureClass
    Set pFCursor = pFclass.Search(Nothing, False)
    Set pFeature = pFCursor.NextFeature
    Set pTable = pFclass
  
    Set pGeoLayer = pFLayer
    Set pRender = New ClassBreaksRenderer
    'Set pClassifyGEN = New Quantile
    pRender.Field = "Valor"
    pRender.BreakCount = 2
    pRender.MinimumBreak = 0
    pRender.Break(0) = 249.9999
    pRender.Break(1) = 5000
   
    Set pUIProperties = pRender
    pUIProperties.LowBreak(0) = 0
    pUIProperties.LowBreak(1) = 250
    pRender.Label(0) = " < 250"
    pRender.Label(1) = " > 250"
   
    Set pColor1 = New RgbColor
    Set pColor2 = New RgbColor
    Set pColor3 = New RgbColor
    pColor1.Red = 0
    pColor1.Green = 255
    pColor1.Blue = 0
    pColor2.Red = 255
    pColor2.Green = 0
    pColor2.Blue = 0
    pColor3.Red = 0
    pColor3.Green = 0
    pColor3.Blue = 0
   
    Dim pSym1 As ISimpleMarkerSymbol
    Set pSym1 = New SimpleMarkerSymbol
    pSym1.Color = pColor1
    pSym1.Outline = True
    pSym1.OutlineSize = 0.4
    pSym1.OutlineColor = pColor3
    pSym1.Style = esriSMSCircle
    pSym1.size = 5
    pRender.Symbol(0) = pSym1
   
    Dim pSym2 As ISimpleMarkerSymbol
    Set pSym2 = New SimpleMarkerSymbol
    pSym2.Color = pColor2
    pSym2.Outline = True
    pSym2.OutlineSize = 0.4
    pSym2.OutlineColor = pColor3
    pSym2.Style = esriSMSCircle
    pSym2.size = 5
    pRender.Symbol(1) = pSym2
   
    ' assign renderer to layer
    Set pGeoLayer.Renderer = pRender
    pMxDoc.UpdateContents
    pMxDoc.ActiveView.Refresh

-------------------------------------------------
We use v9.2

Thanks in advance

Quim

AlexanderGray

Have you tried refreshing the TOC directly (contentsview)
something like this:
for i=0 to pMxDoc.contentsviewcount -1
  pMxDoc.Contentsview(i).refresh()
next