teigha.net4.0 如何画一张图片。我自己画的图片load报错

Question

Using svc As Services = New Services()

        Dim db As Database = New Database()
        Using tr = db.TransactionManager.StartTransaction()
            Using btr As BlockTableRecord = tr.GetObject(db.CurrentSpaceId, OpenMode.ForWrite)
                Dim imagePath As String = "D:\\logo.png"
                If (File.Exists(imagePath)) Then

                    Dim yximageDef = New RasterImageDef
                    yximageDef.SourceFileName = imagePath
                    yximageDef.Load()

                    Using rasterRef = New RasterImage()
                        rasterRef.ImageDefId = yximageDef.ObjectId
                        rasterRef.ShowImage = True

                        btr.AppendEntity(rasterRef)
                        rasterRef.AssociateRasterDef(yximageDef)
                        '计算图片的插入点位置、缩放比例
                        Dim scaleAll = 10 / rasterRef.ImageHeight
                        Dim w = rasterRef.ImageWidth * scaleAll
                        Dim h = 10 * 1.45
                        Dim insert = New Point3d(0, 0, 0)
                        rasterRef.Orientation = New CoordinateSystem3d(insert, Vector3d.XAxis, Vector3d.YAxis)
                        Dim transform = Matrix3d.Scaling(scaleAll, insert)
                        rasterRef.TransformBy(transform)
                        tr.Commit()
                    End Using

                End If

            End Using


        End Using

Answer 1

图片路径有问题吧？