[]
Gets or sets the degree of transparency of the specified picture.
The returned value ranges from 0.0 for a fully opaque picture to
1.0 for a fully clear picture.
double Transparency { get; set; }
Property Transparency As Double
worksheet.Range["A1:B2"].Value = new object[,] {{"Name", "Value"}, {"Test", 100}};
IShape picture = worksheet.Shapes.AddCameraPicture("=$A$1:$B$2", 20, 20);
IPictureFormat pictureFormat = picture.PictureFormat;
pictureFormat.Transparency = 0.25;
double transparency = pictureFormat.Transparency;