获取Word文档的作者和主题

 　　当然要先添加对Word的组件的引用，添加命名空间的引用，代码：

　　Word.Application oWord;

　　Word._Document oDoc;

　　object oMissing = Missing.Value;

　　object docBuiltInProps;

　　object Source = @"DocPath";

　　object Unknown =Type.Missing;

　　oWord = new Word.Application();

　　try

　　{

　　oDoc = oWord.Documents.Open(ref Source,ref Unknown,

　　ref Unknown,ref Unknown,ref Unknown,

　　ref Unknown,ref Unknown,ref Unknown,

　　ref Unknown,ref Unknown,ref Unknown,

　　ref Unknown );

　　docBuiltInProps = oDoc.BuiltInDocumentProperties;

　　Type typeDocBuiltInProps = docBuiltInProps.GetType();

　　//获取作者

　　string index = "Author";

　　string propsValue;

　　object docAuthor = typeDocBuiltInProps.InvokeMember("Item",

　　BindingFlags.Default |

　　BindingFlags.GetProperty,

　　null,docBuiltInProps,

　　new object[] {index} );

　　Type typeDocAuthorProp = docAuthor.GetType();

　　propsValue = typeDocAuthorProp.InvokeMember("Value",

　　BindingFlags.Default |

　　BindingFlags.GetProperty,

　　null,docAuthor,

　　new object[] {} ).ToString();

　　MessageBox.Show( propsValue,"Author" );

　　//获取主题

　　index = "Subject";

　　propsValue = "The Subject";

　　object docSubjectProp = typeDocBuiltInProps.InvokeMember("Item",

　　BindingFlags.Default |

　　BindingFlags.GetProperty,

　　null,docBuiltInProps,

　　new object[] {index} );

　　Type typeDocSubjectProp = docSubjectProp.GetType();

　　propsValue = typeDocSubjectProp.InvokeMember("Value",

　　BindingFlags.Default |BindingFlags.GetProperty,

　　null,docSubjectProp,

　　new object[] {} ).ToString();

　　MessageBox.Show( propsValue,"Subject" );

　　}

　　finally

　　{

　　//关闭word进程

　　object save = false;

　　oWord.Quit(ref save,ref Unknown,ref Unknown);

　　System.Runtime.InteropServices.Marshal.ReleaseComObject(oWord);

　　}