C#批量附加指定目錄下的所有數據庫文件到數據庫中

應用場合：因為經常更換操作系統，所以D盤存放數據庫文件目錄的數據庫每次都要一個一個的附加到MSSQL中，因此設計程序批量附加省時間也方便自己和大家。

程序不足：沒有去研究跟實現NDF日志文件附加和多個日志文件的數據庫附加。

程序源碼：

/// <summary>
/// 循環查找指定目錄下要附加的數據庫文件和對應的日志文件,連接本地數據庫並執行數據庫附加命令
/// </summary>
private void AttachFolderDB()
{
string strFileFolder = "";
FolderBrowserDialog myFolderBrowserDialog = new FolderBrowserDialog();
myFolderBrowserDialog.ShowDialog();
if (myFolderBrowserDialog.SelectedPath != "")
{
strFileFolder = myFolderBrowserDialog.SelectedPath;
}
//查找所有的MDF文件列表
string[] arrAttachFilePath = null;
if (strFileFolder != "")
{
DirectoryInfo dir = new DirectoryInfo(strFileFolder);
//判斷目錄下是否存在主數據庫文件
FileInfo[] finfo = dir.GetFiles("*.mdf");
if (finfo.Length > 0)
{
arrAttachFilePath = new string[finfo.Length];
if (finfo.Length > 0)
{
int i = 0;
foreach (FileInfo f in finfo)
{
arrAttachFilePath[i] = f.FullName;
i = i + 1;
}
}
}

}
//循環附加數據庫
if (arrAttachFilePath != null)
{
for (int i = 0; i < arrAttachFilePath.Length; i++)
{
string strFile = arrAttachFilePath[i].ToString();
string strMdfFilePath = arrAttachFilePath[i].ToString();//mdf路徑
string strLogFilePath = "";//日志文件路徑
string strLdfFilePath = "";//日志文件路徑
string strDataFileName = strMdfFilePath.Substring(strMdfFilePath.LastIndexOf("\\") + 1, strMdfFilePath.Length - strMdfFilePath.LastIndexOf("\\") - 1);
strDataFileName = strDataFileName.Remove(strDataFileName.LastIndexOf("."));

string logIndex = "_Data";
int n = strDataFileName.IndexOf(logIndex);

if (n == -1)
{
strLogFilePath = strMdfFilePath.Remove(strMdfFilePath.LastIndexOf("\\")) + "\\" + strDataFileName + "_log.ldf";
strLdfFilePath = strMdfFilePath.Remove(strMdfFilePath.LastIndexOf("\\")) + "\\" + strDataFileName + ".ldf";
}
else
{
strDataFileName = strDataFileName.Remove(strDataFileName.LastIndexOf("_"));
strLogFilePath = strMdfFilePath.Remove(strMdfFilePath.LastIndexOf("\\")) + "\\" + strDataFileName + "_log.ldf";
strLdfFilePath = strMdfFilePath.Remove(strMdfFilePath.LastIndexOf("\\")) + "\\" + strDataFileName + ".ldf";
}

StringBuilder sb = new StringBuilder();
sb.Append("sp_attach_db @dbname='" + strDataFileName + "',@filename1='" + strMdfFilePath + "'");
if (System.IO.File.Exists(strLogFilePath))
{
sb.Append(",@filename2='" + strLogFilePath + "'");
AttachDataBase(sb.ToString());
}
else if (System.IO.File.Exists(strLdfFilePath))
{
sb.Append(",@filename2='" + strLdfFilePath + "'");
AttachDataBase(sb.ToString());
}
else
{
Console.WriteLine("數據庫文件" + strMdfFilePath + "缺少必備的日志文件！");
}
}
}
}
/// <summary>
/// 連接數據庫並執行附加對應的數據庫文件命令
/// </summary>
/// <param name="strSql">附加數據庫命令字符串</param>
/// <returns></returns>
private bool AttachDataBase(string strSql)
{
SqlConnection con = new SqlConnection(@"Data Source=(local);Initial Catalog=master;Integrated Security=True");
try
{
con.Open();
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = strSql;
cmd.ExecuteNonQuery();
return true;
}
catch (Exception ex)
{
//如果數據庫中存在名為要添加的數據庫時則拋出異常
Console.WriteLine("附加數據庫時異常:" + ex.Message);
return false;
}
finally
{
con.Close();
}
}