从sharepoint数据库中提取文件

Question

我试图在C＃中创建一个小程序来从Sharepoint数据库中提取文件。我从在线搜索中获取了代码，我正在尝试编辑它，以便在保持Sharepoint数据库中的文件夹的同时将文件解压缩到特定文件夹。

具体来说，我希望用户从表单中输入服务器的名称，他们尝试从中提取文件的数据库的名称，最后是他们希望用来提取文件的路径。

我调试时收到错误。

错误说明：Could not find a part of the path: 关于这行代码：

FileStream fs = new FileStream(txtdir.Text + "/" + DirName + "/" + LeafName,
FileMode.Create, FileAccess.Write);

这是我的代码：

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 System.Data.SqlClient;
using System.IO;

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

    private void Form1_Load(object sender, EventArgs e)
    {
    }

    private void ENTER_Click(object sender, EventArgs e)
    {
      string DBConnString = "Server=" + txtserver.Text + ";Database=" 
                            + txtDB.Text + ";Trusted_Connection=True;";
      SqlConnection con = new SqlConnection(DBConnString);
      con.Open();

      SqlCommand com = con.CreateCommand();
      com.CommandText = "SELECT ad.SiteId, ad.Id, ad.DirName," +
          " ad.LeafName, ads.Content" +
          " FROM AllDocs ad, AllDocStreams ads" +
          " WHERE ad.SiteId = ads.SiteId" +
          " AND ad.Id = ads.Id" +
          " AND ads.Content IS NOT NULL" +
          " Order by DirName";


      //SqlCommand com = con.CreateCommand();
      //com.CommandText = "select DirName, LeafName, Content 
        from AllDocStreams, AllDocs 
        where (LeafName like '%.doc' or LeafName like '%.xls' 
               or LeafName like '%.pdf' or LeafName like '%.ppt') 
               and Content is not NULL";


      //com.CommandText = "select DirName, LeafName, Content 
        from AllDocStreams, AllDocs 
        where (LeafName like '%.doc' or LeafName like '%.xls' 
               or LeafName like '%.pdf' or LeafName like '%.ppt') 
               and Content is not NULL";


      SqlDataReader reader = com.ExecuteReader();

      while (reader.Read())
      {
        // grab the file's directory and name
        string DirName = (string)reader["DirName"];
        string LeafName = (string)reader["LeafName"];

        if (!Directory.Exists(DirName))
        {
          Directory.CreateDirectory(DirName);
          Console.WriteLine("Creating directory: " + DirName);
        }

        //FileStream fs = new FileStream(DirName + "/" + LeafName
                              , FileMode.Create, FileAccess.Write);
        FileStream fs = new FileStream(txtdir.Text + "/" + DirName + "/" 
                          + LeafName, FileMode.Create, FileAccess.Write);

        BinaryWriter writer = new BinaryWriter(fs);

        // depending on the speed of your network, 
        //you may want to change the buffer size (it's in bytes)
        int bufferSize = 1000000;
        long startIndex = 0;
        long retval = 0;
        byte[] outByte = new byte[bufferSize];

        // grab the file out of the db one chunk (of size bufferSize) at a time
        do
        {
          retval = reader.GetBytes(4, startIndex, outByte, 0, bufferSize);
          //retval = reader.GetBytes(2, startIndex, outByte, 0, bufferSize);
          startIndex += bufferSize;

          writer.Write(outByte, 0, (int)retval);
          writer.Flush();
        } while (retval == bufferSize);

        // finish writing the file
        writer.Close();
        fs.Close();

        Console.WriteLine("Finished writing file: " + LeafName);
      }

      // close the DB connection and whatnots
      reader.Close();
      con.Close();   
    }                   
  }
}

Answer 1

另一答案

Answer 2

另一答案