take a look on my code:
AxMap1.Refresh() Dim minX As Double = 0 Dim minY As Double = 0 Dim maxX As Double = 0 Dim maxY As Double = 0 AxMap1.PixelToDegrees(0, AxMap1.Height, minX, minY) AxMap1.PixelToDegrees(AxMap1.Width, 0, maxX, maxY) Dim a1 As String = minX.ToString.Replace(",", ".") Dim a2 As String = minY.ToString.Replace(",", ".") Dim a3 As String = maxX.ToString.Replace(",", ".") Dim a4 As String = maxY.ToString.Replace(",", ".") Dim hh As String = AxMap1.Height.ToString Dim ww As String = AxMap1.Width.ToString Dim url As String url = "https://wms.cartografia.agenziaentrate.gov.it/inspire/wms/ows01.php?SERVICE=WMS&VERSION=1.3.0&REQUEST=GetMap&FORMAT=image%2Fpng&TRANSPARENT=true&LAYERS=" & ProvinceLAYER & FogliLAYER & ParticelleLAYER & AcqueLAYER & StradeLAYER & FabbricatiLAYER & CodiceLAYER & GraffaLAYER & "copyright&CRS=EPSG%3A6706&WIDTH=" & ww & "&HEIGHT=" & hh & "&BBOX=" & a2 & "," & a1 & "," & a4 & "," & a3 Dim matricecolore As New Drawing.Imaging.ColorMatrix Dim attributi As New Drawing.Imaging.ImageAttributes Dim mywc As New WebClient Dim immagine As New Bitmap(System.Drawing.Image.FromStream(New MemoryStream(mywc.DownloadData(url)))) matricecolore.Matrix33 = WMSopacity attributi.SetColorMatrix(matricecolore) AxMap1.CreateGraphics.DrawImage(immagine, New Rectangle(0, 0, immagine.Width, immagine.Height), 0, 0, immagine.Width, immagine.Height, GraphicsUnit.Pixel, attributi)
my goal is to see the image above the map but it disappears immediately
help me please!