c# winform 如何从数据库中读取doc数据?

Question

1.doc文件已经上传到数据库
表名：laba
字段名：doctest如何从数据库中读出并保存到c盘根目录 ，名为  2.doc   文件呢？c# winform 方式

Answer 1

数据库里面doctest 字段是什么类型数据?思路使用btye数组来操作

Answer 2

将字符串保存到doc里
  public static void StringToWord(Application oword,Document odoc,Object Nothing, string str)
        {
            try
            {
                Paragraph oPara1;
                oPara1 = odoc.Content.Paragraphs.Add(ref Nothing);                oPara1.Range.Text = str;
                //oPara1.Range.Font.Bold = 0;
                //oPara1.Format.SpaceAfter = 24;
                oPara1.Range.InsertParagraphAfter();
                //return odoc;
            }
            catch (Exception ex) { Log.WriteErLog(ex.Message); }
            finally
            {
                System.Diagnostics.Process[] CurrentProcess = System.Diagnostics.Process.GetProcessesByName("WINWORD");
                for (int i = 0; i < CurrentProcess.Length; i++)
                {
                    if (CurrentProcess[i].MainWindowHandle.ToInt32() == 0)
                    {
                        try
                        {
                            CurrentProcess[i].Kill();
                        }
                        catch
                        {
                        }
                    }
                }            }
        }

Answer 3

 /// <summary>
        /// 导出的数据string
        /// </summary>
        /// <param name="str"></param>
        public static void StringToWord(string str)
        {
            Object Nothing = System.Reflection.Missing.Value;
            Application oword = new Application();//word Application
            Document odoc = oword.Documents.Add(ref Nothing, ref Nothing, ref Nothing, ref Nothing);//文档
            //odoc.Paragraphs.Alignment = WdParagraphAlignment.wdAlignParagraphCenter;
            odoc.Paragraphs.Alignment = WdParagraphAlignment.wdAlignParagraphLeft;            try
            {
                oword.Visible = true;
                
                Paragraph oPara1;
                oPara1 = odoc.Content.Paragraphs.Add(ref Nothing);
             
                oPara1.Range.Text = str;
                oPara1.Range.Font.Bold = 1;
                oPara1.Format.SpaceAfter = 24;
                oPara1.Range.InsertParagraphAfter();
            }
            catch (Exception ex) { Log.WriteErLog(ex.Message); }
            finally
            {
                System.Diagnostics.Process[] CurrentProcess = System.Diagnostics.Process.GetProcessesByName("WINWORD");
                for (int i = 0; i < CurrentProcess.Length; i++)
                {
                    if (CurrentProcess[i].MainWindowHandle.ToInt32() == 0)
                    {
                        try
                        {
                            CurrentProcess[i].Kill();
                        }
                        catch
                        {
                        }
                    }
                }
                
            }
        }

Answer 4

doctest 是image类型的，