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All Convert() methods throw on failure. Use standard try/catch with specific exception types:
using GroupDocs.Markdown;
try
{
MarkdownConverter.ToFile("annual-report.docx", "error-handling-example.md");
}
catch (DocumentProtectedException)
{
Console.WriteLine("Wrong or missing password.");
}
catch (InvalidFormatException)
{
Console.WriteLine("File is corrupt or unsupported.");
}
catch (GroupDocsMarkdownException ex)
{
Console.WriteLine($"Conversion failed: {ex.Message}");
}
annual-report.docx is a sample file used in this example. Click here to download it.
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAlgAAAC0CAYAAABIf1IMAAAABHNCSVQICAgIfAhkiAAADcJJREFUeJzt3VFo3VWeB/BfF2EfdJraSWKkpovabiokaRZcfWiM4jCS0mELjvgwzlZt16fdlUFpKbLCgDKELQ7Oum+yNdYdH4StCLMkdBexSfow7sC0SUA7TZVJW0zbWI1OF/ap+xD+/97k/u/Nze1JbJLPBwo9/3vu/Z1/L5Qv55x7/uumJkauBQAAyfzZdz0AAIDVRsACAEhMwAIASEzAAgBI7Jaii//67/8dZ89dSlbkH576Qdy7+Y4F+6Wqq5566qmnnnrqqbdc9YoUBqyJyYsxevrcDQ2q1LdX/6+mfqnqqqeeeuqpp5566i1XvSKFAWvL5jti3bp1cXbyYvzpf+v/cACAtWhZZrAAANaSdUUHjf7sF7+eE7D+/qkfxL2t9a1BRszOiN12658v2O
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| Exception | When thrown |
|---|---|
DocumentProtectedException | Document is password-protected and no password or wrong password was provided |
InvalidFormatException | File is corrupt or has an unrecognized format |
GroupDocsMarkdownException | General conversion error |
Non-fatal issues are reported via ConvertResult.Warnings:
using GroupDocs.Markdown;
using var converter = new MarkdownConverter("cost-analysis.xlsx");
ConvertResult result = converter.Convert("warnings-example.md", new ConvertOptions { MaxRows = 10 });
foreach (string warning in result.Warnings)
Console.WriteLine($"Warning: {warning}");
cost-analysis.xlsx is a sample file used in this example. Click here to download it.
## Summary
| Category | FY2024 | FY2025 | FY2026 |
| --- | --- | --- | --- |
| Parts and materials | $1,325,000.00 | $1,480,000.00 | $1,620,000.00 |
| Manufacturing equipment | $900,500.00 | $980,000.00 | $1,050,000.00 |
| Warehousing | $420,000.00 | $510,000.00 | $590,000.00 |
| Shipping | $380,000.00 | $445,000.00 | $520,000.00 |
| Marketing | $250,000.00 | $340,000.00 | $480,000.00 |
| R&D | $180,000.00 | $230,000.00 | $310,000.00 |
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