在Visual C#.NET中使用自动化获取和设置Office文档属性（微软文章代码实现）

系统环境：Windows XP SP3；

编程环境：Microsoft Visual Studio 2008；

Office版本：Office 2007。

一、开始编写这个程序先添加几个命名空间：

using Word = Microsoft.Office.Interop.Word;//这个自然是不用说的了。
using Microsoft.Office.Core;//添加了Office （12.0版）就会有这个了。
using System.Reflection;//使用Missing.Value时就要用到这个命名空间。

二、添加几个全局变量

        Word.Application oWord;
        Word._Document oDoc;
        object oMissing = Missing.Value;
        object oDocBuiltInProps;
        object oDocCustomProps;

三、在新建的Form中加一个button1按钮，在其Click事件中写入以下代码：

        private void button1_Click(object sender, EventArgs e)
        {
            //Create an instance of Microsoft Word and make it visible.
            oWord = new Word.Application();
            oWord.Visible = true;

            //Create a new Document and get the BuiltInDocumentProperties collection.
            oDoc = oWord.Documents.Add(ref oMissing, ref oMissing, ref oMissing, ref oMissing);
            oDocBuiltInProps = oDoc.BuiltInDocumentProperties;
            Type typeDocBuiltInProps = oDocBuiltInProps.GetType();

            //Get the Author property and display it.
            string strIndex = "Author";
            string strValue;
            object oDocAuthorProp = typeDocBuiltInProps.InvokeMember("Item",
                                                                    BindingFlags.Default |
                                                                    BindingFlags.GetProperty,
                                                                    null,
                                                                    oDocBuiltInProps,
                                                                    new object[] { strIndex });
            Type typeDocAuthorProp = oDocAuthorProp.GetType();
            strValue = typeDocAuthorProp.InvokeMember("Value",
                                                    BindingFlags.Default |
                                                    BindingFlags.GetProperty,
                                                    null,
                                                    oDocAuthorProp,
                                                    new object[] {}).ToString();
            MessageBox.Show("The Author is :" + strValue, "Autor");

            //Set the subject property.
            strIndex = "Subject";
            strValue = "The Subject";
            typeDocAuthorProp.InvokeMember("Item",
                                            BindingFlags.Default |
                                            BindingFlags.SetProperty,
                                            null,
                                            oDocBuiltInProps,
                                            new object[] { strIndex, strValue });

            //Add a property/value pair to the CustomDocumentProperties collection.
            oDocCustomProps = oDoc.CustomDocumentProperties;
            Type typeDocCustomProps = oDocCustomProps.GetType();
            strIndex = "Knowledge Base Article";
            strValue = "Q303296";
            object[] oArgs ={strIndex,false,
                               MsoDocProperties.msoPropertyTypeString,
                               strValue};
            typeDocCustomProps.InvokeMember("Add", BindingFlags.Default |
                                                BindingFlags.InvokeMethod, null,
                                                oDocCustomProps, oArgs);
            MessageBox.Show("Select \"Property\" from the File Menu" +
                            "to view the changes.\nSelect the Summary tab to view" +
                            "the Subject property and the Custom tab to view the Knowledge" +
                            "Base Article property.", "Check File Properties", MessageBoxButtons.OK, MessageBoxIcon.Information);

        }