Describes the cause and action for error messages.
Error Message(English)：
data reader invalid file signature
Weird XLS file failing when using ExcelDataReader
https://stackoverflow.com/questions/52229802/weird-xls-file-failing-when-using-exceldatareader
Invalid Data Exception when using ExcelDataReader
https://stackoverflow.com/questions/48443648/invalid-data-exception-when-using-exceldatareader
Error reading Excel document in forms C#
https://stackoverflow.com/questions/44862557/error-reading-excel-document-in-forms-c-sharp
Not able to read excel sheet saved as xls using closedxml
https://stackoverflow.com/questions/41742530/not-able-to-read-excel-sheet-saved-as-xls-using-closedx・・・
Unable to load XLS file - "Invalid file signature" (CreateReader) - GitHub
https://github.com/ExcelDataReader/ExcelDataReader/issues/368
[Solved] Reading Excel and get error - CodeProject
https://www.codeproject.com/Questions/264925/Reading-Excel-and-get-error
c# - Reading data from Excel sheet with ExcelDataReader - Code ...
https://codereview.stackexchange.com/questions/47227/reading-data-from-excel-sheet-with-exceldatarea・・・
Excel Data Reader - Read Excel files in .NET - CodePlex Archive
https://archive.codeplex.com/?p=exceldatareader
C# Tutorial - How to read an excel (.xls/.xlsx) file | FoxLearn - YouTube
https://www.youtube.com/watch?v=JlzzdB3K-1M