/// <summary>
/// Inserts a picture at the end of the text in the header or footer
/// </summary>
/// <param name="PictureFile">The image object containing the Picture</param>
/// <param name="Alignment">Alignment. The image object will be inserted at the end of the Text.</param>
public ExcelVmlDrawingPicture InsertPicture(FileInfo PictureFile, PictureAlignment Alignment)
{
string id = ValidateImage(Alignment);
Image Picture;
try
{
if (!PictureFile.Exists)
{
throw (new FileNotFoundException(string.Format("{0} is missing", PictureFile.FullName)));
}
Picture = Image.FromFile(PictureFile.FullName);
}
catch (Exception ex)
{
throw (new InvalidDataException("File is not a supported image-file or is corrupt", ex));
}
string contentType = ExcelPicture.GetContentType(PictureFile.Extension);
var uriPic = XmlHelper.GetNewUri(_ws._package.Package, "/xl/media/" + PictureFile.Name.Substring(0, PictureFile.Name.Length - PictureFile.Extension.Length) + "{0}" + PictureFile.Extension);
#if (Core)
var imgBytes = ImageCompat.GetImageAsByteArray(Picture);
#else
var ic = new ImageConverter();
byte[] imgBytes = (byte[])ic.ConvertTo(Picture, typeof(byte[]));
#endif
var ii = _ws.Workbook._package.AddImage(imgBytes, uriPic, contentType);
return(AddImage(Picture, id, ii));
}
/// <summary>
/// Set the picture from an image file.
/// The image file will be saved as a blob, so make sure Excel supports the image format.
/// </summary>
/// <param name="PictureFile">The image file.</param>
public void SetFromFile(FileInfo PictureFile)
{
DeletePrevImage();
Image img;
try
{
img = Image.FromFile(PictureFile.FullName);
}
catch (Exception ex)
{
throw (new InvalidDataException("File is not a supported image-file or is corrupt", ex));
}
ImageConverter ic = new ImageConverter();
string contentType = ExcelPicture.GetContentType(PictureFile.Extension);
var imageURI = XmlHelper.GetNewUri(_workSheet._package.Package, "/xl/media/" + PictureFile.Name.Substring(0, PictureFile.Name.Length - PictureFile.Extension.Length) + "{0}" + PictureFile.Extension);
byte[] fileBytes = (byte[])ic.ConvertTo(img, typeof(byte[]));
var ii = _workSheet.Workbook._package.AddImage(fileBytes, imageURI, contentType);
if (_workSheet.Part.Package.PartExists(imageURI) && ii.RefCount == 1) //The file exists with another content, overwrite it.
{
//Remove the part if it exists
_workSheet.Part.Package.DeletePart(imageURI);
}
var imagePart = _workSheet.Part.Package.CreatePart(imageURI, contentType, CompressionOption.NotCompressed);
//Save the picture to package.
var strm = imagePart.GetStream(FileMode.Create, FileAccess.Write);
strm.Write(fileBytes, 0, fileBytes.Length);
var rel = _workSheet.Part.CreateRelationship(imageURI, TargetMode.Internal, ExcelPackage.schemaRelationships + "/image",
PackagePartForMono.NextRelationshipID);
SetXmlNodeString(BACKGROUNDPIC_PATH, rel.Id);
}
