We are trying to generate a preview from multipage Corel draw file(cdr) to webp and we encountered this exception.
Aspose.Imaging.CoreExceptions.ImageSaveException: Image saving failed. —> Aspose.Imaging.CoreExceptions.ImageSaveException: Image export failed. —> System.IndexOutOfRangeException: Index was outside the bounds of the array.
at #=zgfEbFttj7OqPctXcl$Uz6ERSXpit_V8jyrfOVKsME_RdA4qFl6BHnYiPvdRs.#=zfeZHrGZtanTdZ$vMqA==(#=zGnTa9FNmw9p8n8NFlHzOprRikcgLVSfsEM3YUnolo4cLLlJ_2xHDMrROuHgzgZMz2w== #=z9gcl3o8=)
at #=zgfEbFttj7OqPctXcl$Uz6ERSXpit_V8jyrfOVKsME_RdA4qFl6BHnYiPvdRs.#=zDtlGNRpBk5_L(#=zArK_ghb4HuszVn6mnasQWC2pt39qOYwQ0Z2YZQ5gZTGNy6AuAtpZ$TG7EpVe36$ooA== #=zOR5H2Hs=)
at #=zd0gllY43NtQOxfCH_s3krRWLCt5yhW9UADBsj$cqoKKM9TCrYNVBaO_38uSZg_XCZXF_h4raTQ4a.#=zxsFSChqjKPn8(#=zhF7X4_8= #=zE10bi84=)
at #=zd0gllY43NtQOxfCH_s3krRWLCt5yhW9UADBsj$cqoKKM9TCrYNVBaO_38uSZg_XCZXF_h4raTQ4a.#=zw20xeM7zONAb(#=zhF7X4_8= #=zE10bi84=, Int32& #=z9c$YoaizJLMX)
at #=zGGsdwz1F4EqmdCeyPHWKQua6cBs1LwvbE9Dc7bf2pcyLvll31l85yNfgJAAvtPKZ3A==.#=zI_dBEA9uuhlE(Int32 #=zEyuV_bI=, Boolean #=zrWA$Q0B4HvELHYDRCQ==, Boolean #=zAdPmR6ECCphl, Int64 #=zqd$_61q3kr4E, Int32& #=z$3O9FZQLrQ0y, Int32& #=zCb9X8eE=)
at #=zGGsdwz1F4EqmdCeyPHWKQua6cBs1LwvbE9Dc7bf2pcyLvll31l85yNfgJAAvtPKZ3A==.#=zpVi9sP1Y9FLT(Boolean #=zAdPmR6ECCphl)
at #=zGGsdwz1F4EqmdCeyPHWKQua6cBs1LwvbE9Dc7bf2pcyLvll31l85yNfgJAAvtPKZ3A==.#=zJDe3MxE=(#=zmgRfwJyUyii3cp1EnXbmYR0_ExTLtx9gaF2vPIhR8TyEtfpaFdayY2o= #=z33QejhY=, Int32 #=zZ8D8D4k=, Int32 #=z3r$rhNs=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zY2OFobISnxbIptE3Xj69LE8i10z7(Object #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zElWDNL0TQLQJ3eEdVxKZohU=(MethodBase #=z_TROKgI=, Boolean #=zyCPY02I=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=z8L9pmROGq$Y2$I9cWZuNUn3ISs7o()
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zTmXfPL9e15OQG364q9JQ9dSutLDR(Boolean #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zY2OFobISnxbIptE3Xj69LE8i10z7(Object #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zoa$kyljH3JONwQNHtwoczy42EdWi()
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=z8L9pmROGq$Y2$I9cWZuNUn3ISs7o()
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zTmXfPL9e15OQG364q9JQ9dSutLDR(Boolean #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zY2OFobISnxbIptE3Xj69LE8i10z7(Object #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zoa$kyljH3JONwQNHtwoczy42EdWi()
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zHPb07SKD$J2Q_COx$5DUwd_QoEJbEB9RzHVJGPw=(Object #=z_TROKgI=, UInt32 #=zyCPY02I=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zTmXfPL9e15OQG364q9JQ9dSutLDR(Boolean #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=zTmXfPL9e15OQG364q9JQ9dSutLDR(Boolean #=z_TROKgI=)
at #=qWvdVq2GG1E$YyHOj9o1aFKXy4pKS1QM11Wp7EspsTTw=.#=z8N1_sXxY2si5CejlW_FP_UXTG$Q2stPhKKEg1TonwS2m(Object[] #=z_TROKgI=, Type[] #=zyCPY02I=, Type[] #=zSH85idM=, Object[] #=zKtmmm4o=)
at #=zdtoPTkXbJFxHW2$_4Gh1SF9bma64tSJz1XFkAr15bBUZXwwwUw==.#=z9YsaCZo=(#=zmgRfwJyUyii3cp1EnXbmYR0_ExTLtx9gaF2vPIhR8TyEtfpaFdayY2o= #=z77PZ5jw=)
at #=znag_Zx$32dEVsKXoGDkySa4eaHEEpMarmJDlKv9gssq4iGYK81AClhU=.#=zKgF96zg=(#=zG$GBq4s= #=zOLm3Kck=, RasterImage #=zF5VoE655OCKOwSdj2w==, Stream #=z7ZmspA4=, ImageOptionsBase #=zOP2zRI8=, Rectangle #=z9ZoJ0wOLVubw)
at #=zmI$CMWYKMneTIZeivNnNDvED0CbHyFXa7ausiw78ffBMYsKih4u9QxK25qsX.#=zKgF96zg=(#=zG$GBq4s= #=zOLm3Kck=, Image #=zjPfc$Ns=, Stream #=z7ZmspA4=, ImageOptionsBase #=zOP2zRI8=, Rectangle #=z9ZoJ0wOLVubw, Rectangle #=zbdQg$a2VvPmwNEsA3w==)
at #=zOX811h2SighiJ$zQn_dT486b6APY$BrR13nqV6nRv2KdqL3TSQ==.Export(Image #=zjPfc$Ns=, Stream #=z7ZmspA4=, ImageOptionsBase #=zOP2zRI8=, Rectangle #=zbdQg$a2VvPmwNEsA3w==)
at Aspose.Imaging.Image.Save(Stream stream, ImageOptionsBase optionsBase, Rectangle boundsRectangle)
— End of inner exception stack trace —
at Aspose.Imaging.Image.Save(Stream stream, ImageOptionsBase optionsBase, Rectangle boundsRectangle)
at Aspose.Imaging.Image.Save(String filePath, ImageOptionsBase options, Rectangle boundsRectangle)
— End of inner exception stack trace —
at Aspose.Imaging.Image.Save(String filePath, ImageOptionsBase options, Rectangle boundsRectangle)
at Aspose.Imaging.Image.Save(String filePath, ImageOptionsBase options)
Here is our code on how we use the Aspose.Image to create different file format but concentrate on the webp part
private bool CreatePreviews(CreatePreviewMediaActionBase action)
{
const int DpiResolution = 72;
const string CdrFormat = "CDR";
// Only process CDR files
if (!action.EngineFormat.Equals(CdrFormat, StringComparison.OrdinalIgnoreCase))
{
throw new MediaEngineException("File not supported.", false);
}
var stopwatch = Stopwatch.StartNew();
try
{
using var inputStream = File.OpenRead(action.Path);
long fileSizeBytes = inputStream.Length;
using var image = Image.Load(inputStream);
// Cast to CdrImage to access pages
CdrImage cdrImage = image as CdrImage;
if (cdrImage == null)
{
throw new MediaEngineException("Failed to load CDR image.", false);
}
// Get pages array - for single page CDR, Pages will contain one page
Image[] pages = cdrImage.Pages;
int pageCount = pages.Length;
int pageNumber = 1;
// Generate a preview for each page
foreach (Image page in pages)
{
// Calculate preview size
int previewWidth;
int previewHeight;
action.CalculateImageSize(Convert.ToInt32(page.Width), Convert.ToInt32(page.Height), DpiResolution, out previewWidth, out previewHeight);
// Get output path based on format
string previewPath = App.GetTemporaryFile(action.PreviewFormat.ToString());
// Configure rasterization options with white background
VectorRasterizationOptions rasterizationOptions = new CdrRasterizationOptions
{
PageWidth = previewWidth,
PageHeight = previewHeight
};
// Save based on the requested format
switch (action.PreviewFormat)
{
case ImageFormat.Jpg:
var jpegOptions = new JpegOptions
{
Quality = 75,
VectorRasterizationOptions = rasterizationOptions
};
page.Save(previewPath, jpegOptions);
break;
case ImageFormat.Png:
var pngOptions = new PngOptions
{
ColorType = Aspose.Imaging.FileFormats.Png.PngColorType.TruecolorWithAlpha,
PngCompressionLevel = PngCompressionLevel.ZipLevel9,
FilterType = Aspose.Imaging.FileFormats.Png.PngFilterType.None,
Progressive = true,
VectorRasterizationOptions = rasterizationOptions
};
page.Save(previewPath, pngOptions);
break;
case ImageFormat.WebP:
var webpOptions = new WebPOptions
{
Lossless = true,
VectorRasterizationOptions = rasterizationOptions
};
page.Save(previewPath, webpOptions);
break;
default:
throw ErrorHelper.CreateGraphicEngineFileFormatNotSupportedForThumbnailAndPreview(App, EngineId);
}
// Add preview with page number (1-based)
action.Previews.Add(new Preview(previewPath, pageNumber, previewWidth, previewHeight));
pageNumber++;
}
stopwatch.Stop();
var additionalInfo = new Dictionary<string, string>
{
{"Function","AsposeImagingMediaEngine.CreatePreviews" },
{"Duration", stopwatch.ElapsedMilliseconds.ToString()},
{"FileSizeBytes", fileSizeBytes.ToString()},
{"PageCount", pageCount.ToString()},
{"OutputFormat", action.PreviewFormat.ToString()}
};
App.WriteTrace("AsposeImagingMediaEngine", TraceSeverity.Information, additionalInfo);
return true;
}
catch (ImageLoadException ex)
{
stopwatch.Stop();
App.Log(LogSeverity.Error, "AsposeImagingMediaEngine.CreatePreviews: CDR files are not supported or corrupted", ex);
throw new MediaEngineException("CDR files are not supported or corrupted.", ex, false);
}
catch (Exception ex)
{
stopwatch.Stop();
App.Log(LogSeverity.Error, "AsposeImagingMediaEngine.CreatePreviews: An error occurred during the create preview process", ex);
throw new MediaEngineException("An error occurred during the create preview process.", ex, false);
}
}
On the foreach, the exception happened during the succeeding page is being save to webp. First page is successfully saved.
I will attached the test file that we’ve used.
Aspose.Imaging version installed: 25.10.0
20 PAGES HOSPITALITY BI-FOLD BROCHURE (3).zip (8.2 MB)
I could not fully verify this explanation against the retrieved sources. Please double-check the behaviour in your environment and confirm the exact SDK/version.