1）Jxl是一个开源的Java Excel API项目，通过Jxl，Java可以很方便的操作微软的Excel文档。除了Jxl之外，还有Apache的一个POI项目，也可以操作Excel，两者相比之下：Jxl使用方便，但功能相对POI比较弱。

2）jxl.dll据说是一个韩国人写的，并且是用java语言写的。是通过一个ikvm的工具转换为jxl.dll供windows平台使用的。具体可以参照下面两个链接内容：

 

http://www.splinter.com.au/using-java-libraries-in-a-c-app-with-ikvm/

http://blog.csdn.net/kingdax1/article/details/2679610

3）并且jxl不支持excel2007及以上的版本。

4）简要使用方法如下:

1 using System; 2 using System.Collections.Generic; 3 using System.Text; 4 using System.IO; 5 using jxl; 6 using jxl.write; 7 namespace ExcelWrap 8 { 9     /// 
10     /// jxl.dll帮助类11     /// 说明:jxl不支持excel2007以上格式12     /// 
13     public class JxlHelper14     {15 16         public static void ReadExcel(string ExcelPath)17         { 18           19         try {20             21             //Create a workbook object from the file at specified location. 22             //Change the path of the file as per the location on your computer. 23             Workbook wrk1 =  Workbook.getWorkbook(new FileInfo(ExcelPath));24             25             //Obtain the reference to the first sheet in the workbook26             Sheet sheet1 = wrk1.getSheet(0);27             28             //Obtain reference to the Cell using getCell(int col, int row) method of sheet29             Cell colArow1 = sheet1.getCell(0, 0);30             Cell colBrow1 = sheet1.getCell(1, 0);31             Cell colArow2 = sheet1.getCell(0, 1);32             33             //Read the contents of the Cell using getContents() method, which will return 34             //it as a String35             String str_colArow1 = colArow1.getContents();36             String str_colBrow1 = colBrow1.getContents();37             String str_colArow2 = colArow2.getContents();38             39             //Display the cell contents40             System.Console.WriteLine("Contents of cell Col A Row 1: \""+str_colArow1 + "\"");41             System.Console.WriteLine("Contents of cell Col B Row 1: \""+str_colBrow1 + "\"");42             System.Console.WriteLine("Contents of cell Col A Row 2: \"" + str_colArow2 + "\"");43 44 45         }46         catch (jxl.read.biff.BiffException e)47         {48             Console.WriteLine(e.StackTrace);49         } catch (IOException e) {50             Console.WriteLine(e.StackTrace);51         }52         53         }54 55         public static void WriteExcel(string ExcelPath)56         { 57           try {58             FileInfo exlFile = new FileInfo(ExcelPath);59             WritableWorkbook writableWorkbook = Workbook60                     .createWorkbook(exlFile);61 62             WritableSheet writableSheet = writableWorkbook.createSheet(63                     "Sheet1", 0);64 65             //Create Cells with contents of different data types. 66             //Also specify the Cell coordinates in the constructor67             Label label = new Label(0, 0, "Label (String)");68             System.DateTime dt = System.DateTime.Now;69             jxl.write.DateTime date = new jxl.write.DateTime(1, 0, ref dt);70             jxl.write.Boolean bl = new jxl.write.Boolean(2, 0, true);71             Number num = new Number(3, 0, 9.99);72 73             //Add the created Cells to the sheet74             writableSheet.addCell(label);75             writableSheet.addCell(date);76             writableSheet.addCell(bl);77             writableSheet.addCell(num);78 79             //Write and close the workbook80             writableWorkbook.write();81             writableWorkbook.close();82 83         } catch (IOException e) {84             Console.WriteLine(e.StackTrace);85         } catch (jxl.write.biff.RowsExceededException e) {86             Console.WriteLine(e.StackTrace);87         } catch (WriteException e) {88             Console.WriteLine(e.StackTrace);89         }90         }91     }92 }

 5)其他的使用方法可以参考java实现的例子。网上关于java的例子还是挺多的。之前我并不知道它是通过java转换而来的，也没有可以使用的例子，只有通过Reflector反编译看源码，慢慢了解。