读取xls文件和xlsx文件创建的版本号。
虽然xlsx声明的是向前兼容，但是不知道OleDb是不是也是这样，没有办法所以要读取文件版本，限定只能读取Excel2007保存的文件。
1 using ICSharpCode.SharpZipLib.Zip;
2
3 public const ushort BIFF8 = 0x0600;
4 public const ushort BIFF7 = 0x0500;
5 public static string GetExcelVersion(string fileName)
6 {
7 string version = string.Empty;
8 try
9 {
10 if (Path.GetExtension(fileName) == ".xls")
11 {
12 BinaryReader binReader = new BinaryReader(File.Open(fileName, FileMode.Open));
13 try
14 {
15 byte[] testArray = new byte[2];
16 int count = binReader.Read(testArray, 0, 2);
17
18 if (count != 0)
19 {
20 // Reset the position in the stream to zero.
21 binReader.BaseStream.Seek(0, SeekOrigin.Begin);
22 byte[] testArray2 = new byte[512];
23 int count2 = binReader.Read(testArray2, 0, 512);
24 ushort BOF = binReader.ReadUInt16();
25 ushort Length = binReader.ReadUInt16();
26 ushort Version = binReader.ReadUInt16();
27 ushort file = binReader.ReadUInt16();
28 if (Version == BIFF8)
29 {
30 version = "Excel8.0";
31 }
32 if (Version == BIFF7)
33 {
34 version = "Excel8.0";
35 }
36 }
37 }
38 catch (EndOfStreamException e)
39 {
40 throw e;
41 }
42 finally
43 {
44 binReader.Close();
45 }
46 }
47 else if (Path.GetExtension(fileName) == ".xlsx")
48 {
49 ZipFile zip = new ZipFile(fileName);
50 try
51 {
52 IEnumerator entries = zip.GetEnumerator();
53 while (entries.MoveNext())
54 {
55 ZipEntry current = (ZipEntry)entries.Current;
56 if (current.Name.Equals("docProps/app.xml"))
57 {
58 Stream stream = zip.GetInputStream(current);
59 XPathNavigator navigator = new XPathDocument(stream).CreateNavigator();
60 XmlNamespaceManager resolver = new XmlNamespaceManager(navigator.NameTable);
61 resolver.AddNamespace("x", "http://schemas.openxmlformats.org/officeDocument/2006/extended-properties");
62 XPathNodeIterator iterator = navigator.Select("//x:AppVersion", resolver);
63 iterator.MoveNext();
64 string attribute = iterator.Current.InnerXml;
65 version = attribute;
66 }
67 }
68 }
69 catch (IOException ioEx)
70 {
71 throw ioEx;
72 }
73 finally
74 {
75 if (zip != null)
76 {
77 zip.Close();
78 }
79 }
80 }
81 }
82 catch (IOException ioEx)
83 {
84 throw ioEx;
85 }
86
87 return version;
88 }
调用：
1 catch 2 { 3 try 4 { 5 string version = GetExcelVersion(FilePath); 6 string error = string.Empty; 7 if (version == "") 8 { 9 error = "无法识别的Excel文件，请确保文件为有效的Excel2003或者Excel2007格式文件。"; 10 } 11 else if (!version.Contains("12") && !version.Contains("Excel8.0")) 12 { 13 error = string.Format("由高版本的Excel程序创建，请转换为Excel2003或者Excel2007格式文件", version); 14 } 15 throw new InvalidDataException(error); 16 } 17 catch (IOException ioEx) 18 { 19 throw ioEx; 20 } 21 }