针对你提出的“exceldatareader.exceptions.HeaderException: 'invalid file signature.'”错误,以下是一些可能的原因及相应的解决方案: 确认ExcelDataReader库和依赖项已正确安装: 确保你已经通过NuGet或其他方式正确安装了ExcelDataReader库及其所有依赖项。 你可以通过Visual Studio的“管理NuGet包”界面来检查和安装Exc...
Message="Error: Invalid file signature" Source="Excel" StackTrace: at Excel.Core.XlsHeader.ReadHeader(Stream file) at Excel.ExcelDataReader..ctor(Stream fileStream, Boolean promoteToColumns) at Excel.ExcelDataReader..ctor(Stream fileStream) at DPWebLib.PriceSticker.VAuto.UpdateFromVAuto(Int32 dea...
ftype = Path.GetExtension(filename); if (ftype == ".xls") { // Reading from a binary Excel file ('97-2003 format; *.xls) excelReader = ExcelReaderFactory.CreateBinaryReader(stream); } else { // Reading from a OpenXml Excel file (2007 for...
Lots of other formats read fine, but of course I have a legacy program to support that only writes in this format. ExcelDataReader.Exceptions.HeaderException is thrown with a message of "Invalid file signature." Sample Data <?xml version="1.0" encoding="UTF-8"?> <?mso-application progid...
Check file signature? Check folder read write rights .net Core check for Drive Exists check for file path on remote server using different user name and password. check for lower or uppercase of .contains(string) Check for neighbouring cells in a 2D array Check if .dll's are obfuscated!
问题是我们在每次迭代中最终得到了数据的三个副本：读取器中包含的副本、object[]中的副本和string[]中...
Check file signature? Check folder read write rights .net Core check for Drive Exists check for file path on remote server using different user name and password. check for lower or uppercase of .contains(string) Check for neighbouring cells in a 2D array Check if .dll's are obfuscated!