用OpenXml在文档的尾部添加一个Rich Text Content Control/Plain Text Content Control

实现环境:Visual Studio 2010, OpenXml SDK 2.0

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using DocumentFormat.OpenXml.Packaging;
using DocumentFormat.OpenXml.Wordprocessing;

namespace OpenXmlWordSdtBlock
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            OpenFileDialog objOpenFileDialog = new OpenFileDialog();
            objOpenFileDialog.Filter = "Word Document (*.docx)|*.docx";
            objOpenFileDialog.ShowDialog();
            string strPath = objOpenFileDialog.FileName;
            Form2 objForm2 = new Form2();
            objForm2.ShowDialog();
            string strInsertText = objForm2.Msg;
            if (strPath.Length > 0)
            {
                try
                {
                    using (WordprocessingDocument objWordprocessingDocument =
                        WordprocessingDocument.Open(strPath, true))
                    {
                        /*
                         * 接下来的代码将获取MainDocumentPart、Document和Body。
                         * 这些是Word文档中已经存在的结构,所以不用New。
                         */
                        MainDocumentPart objMainDocumentPart = 
                            objWordprocessingDocument.MainDocumentPart;
                        Document objDocument = objMainDocumentPart.Document;
                        Body objBody = objDocument.Descendants<Body>()
                            .FirstOrDefault();
                        /*
                         * 接下来的代码将创建一个新的段落来放Rich Text Content
                         * Control。事实下所有的Content Control在OpenXml 格式中
                         * 都以SdtBlock表示。所以说这是插入一个Plain Text 
                         * Content Control也是没错的。
                         */
                        Paragraph objParagraph_1 = new Paragraph();
                        SdtBlock objSdtBlock = new SdtBlock();
                        SdtContentBlock objSdtContentBlock = 
                            new SdtContentBlock();
                        Paragraph objParagraph_2 = new Paragraph();
                        Run objRun = new Run();
                        Text objText = new Text();
                        if (strInsertText.Length > 0)
                            objText.Text = strInsertText;
                        else
                            objText.Text = "<Null>";
                        objRun.Append(objText);
                        objParagraph_2.Append(objRun);
                        objSdtContentBlock.Append(objParagraph_2);
                        objSdtBlock.Append(objSdtContentBlock);
                        objParagraph_1.Append(objSdtBlock);
                        objBody.Append(objParagraph_1);
                        objDocument.Save();
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show(string.Format
                        ("Stack:\n{0}\nException:\n{1}", ex.StackTrace, 
                        ex.Message), "OpenxXmlWordSdtBlock Exception");
                }
            }
        }
    }
}


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