/// <summary>
/// Get the chart image
/// </summary>
/// <returns></returns>
private Image GenerateImage()
{
Image Retval = null;
try
{
this.moSpreadsheet.GetLock();
//-- Set the aspect ratio of the image
this.SetAspectRatio();
SpreadsheetGear.Shapes.IShapes ExcelShapes = this.moSpreadsheet.ActiveWorksheet.Shapes;
SpreadsheetGear.Drawing.Image SpreadsheetImage = new SpreadsheetGear.Drawing.Image(ExcelShapes[0]);
Bitmap ExcelBitmap = SpreadsheetImage.GetBitmap();
Retval = (Image)ExcelBitmap;
}
catch (Exception)
{
}
finally
{
this.moSpreadsheet.ReleaseLock();
}
return Retval;
}
/// <summary>
/// It replaces vertor Map image (.emf), present in xls presentation, with bitmap image like .png, .jpeg.
/// </summary>
/// <param name="mapPresentationFilePath"></param>
public static bool ReplaceVectorMapImageWithBitmap(string mapPresentationFilePath, ImageFormat desiredBitmapFormat, string resultantOutputFilePath)
{
bool RetVal = false;
SpreadsheetGear.IWorkbook workbook = null;
SpreadsheetGear.IWorksheet worksheet = null;
SpreadsheetGear.Shapes.IShapes ImagesShapes = null;
SpreadsheetGear.Shapes.IShape OriginalMapShape = null;
byte[] MapImageBytes = null;
try
{
if (string.IsNullOrEmpty(mapPresentationFilePath) == false)
{
if (File.Exists(mapPresentationFilePath))
{
//- Load xls.
workbook = SpreadsheetGear.Factory.GetWorkbook(mapPresentationFilePath);
worksheet = workbook.Worksheets[0];
//- Get all shapes present in WorkSheet 1
ImagesShapes = worksheet.Shapes;
if (ImagesShapes != null)
{
//- Load Map Image (Generally 2nd Shape in Sheet 1 represents Map image.)
foreach (SpreadsheetGear.Shapes.IShape imgShape in ImagesShapes)
{
if (imgShape.Type == SpreadsheetGear.Shapes.ShapeType.Picture && imgShape.Name == "Picture 2")
{
OriginalMapShape = imgShape;
//- Load Image into memory
SpreadsheetGear.Drawing.Image MapImage = new SpreadsheetGear.Drawing.Image(imgShape);
System.Drawing.Bitmap MapBitmap = MapImage.GetBitmap();
MemoryStream ms = new MemoryStream();
ms.Position = 0;
//- Convert Map to png format
MapBitmap.Save(ms, desiredBitmapFormat);
MapImageBytes = ms.ToArray();
break;
}
}
//- Save and close Workbook.
if (MapImageBytes != null)
{
// overwrite on previous Map shape.
worksheet.Shapes.AddPicture(MapImageBytes, OriginalMapShape.Left, OriginalMapShape.Top, OriginalMapShape.Width, OriginalMapShape.Height);
//- Delete Previous Image
OriginalMapShape.Delete();
if (File.Exists(resultantOutputFilePath))
{
try
{
File.Delete(resultantOutputFilePath);
}
catch
{ }
}
workbook.SaveAs(resultantOutputFilePath, SpreadsheetGear.FileFormat.XLS97);
RetVal = true;
workbook.Close();
workbook = null;
}
}
}
}
}
catch (Exception)
{
if (workbook != null)
{
workbook.Close();
}
}
return RetVal;
}
