Read Excel data from C#

Question

I'm trying to read data from an Excel sheet using Office.Interoperability.Excel namespace. I'd like to get the first row of the sheet as the first row contains the headers, without specifying the start and end cells. Because I wouldn't know if a new column is added to the sheet.

    Microsoft.Office.Interop.Excel.Application excelObj = new Application();

    Microsoft.Office.Interop.Excel.Workbook myBook = excelObj.Workbooks.Open(@"D:\myFile.xlsx", 0, true, 5, "", "", true, Microsoft.Office.Interop.Excel.XlPlatform.xlWindows, "\t", false, false, 0, true, 0, 0);

    Microsoft.Office.Interop.Excel.Worksheet mySheet = (Worksheet)myBook.Sheets.get_Item(1);

    Range range = mySheet.Cells.EntireRow;

Here, the range becomes the entire range and it doesn't get limited to the number of header columns. Also I've a huge data of about 10,000 rows to process.

Answer 1

如果您的要求不涉及写回excel文件，我建议您使用Excel Data Reader（http://exceldatareader.codeplex.com/），它更易于使用，不需要服务器上的excel，而且速度更快

Answer 2

我认为您正在寻找这个：

Range headers = mySheet.UsedRange.Rows(1);

Answer 3

I just answered another Excel reading question here: C# converting .xls to .csv without Excel

The FileHelpers library is perfect for your task. I use it myself for those numbers of rows and above.

I don't know what you are doing with the rows once they are read from Excel, but if you a looking at some processing that could be broken down into step, have a look at Rhino.Etl for that. It's a really powerful way to process large amounts of data.