我正在通过用于升级我们的应用程序的 WinForms 应用程序自动将 SQL Server 2005 Express 升级到 SQL Server 2008R2 Express。该应用程序部署在大约 800 多个位置,因此我们不需要任何手动步骤。
我编写了以下代码,主要用于执行升级。我需要知道,确定 SQL Server 安装程序是否成功完成的最佳做法是什么?我应该只为该过程寻找退出代码 0 吗?这够好吗?即,如果升级出现问题并被回滚,它是否仍能以代码 0 退出(我会对此进行测试,但不知道模拟失败的最佳方法)?
有没有其他方法可以确定我的 C# 应用程序升级是否成功,以便在 SQL Server 安装程序遇到任何错误时可以正确处理?
try
{
//First, find the version of the currently installed SQL Server Instance
string sqlString = "SELECT SUBSTRING(CONVERT(VARCHAR, SERVERPROPERTY('productversion')), 0, 5)";
string sqlInstanceVersion = string.Empty;
using (DbCommand cmd = _database.GetSqlStringCommand(sqlString))
{
sqlInstanceVersion = cmd.ExecuteScalar().ToString();
}
if (sqlInstanceVersion.Equals(String.Empty))
{
//TODO throw an exception or do something else
}
//11.00 = SQL2012, 10.50 = SQL2008R2, 10.00 = SQL2008, 9.00 = SQL2005, 8.00 = SQL2000
switch (sqlInstanceVersion)
{
case "11.00":
case "10.50":
case "10.00":
//Log that the version is already up to date and return
return;
case "9.00":
case "8.00":
//We are on SQL 2000 or 2005, so continue with upgrade to 2008R2
break;
default:
//TODO throw an exception for unsupported SQL Server version
break;
}
string upgradeArgumentString = "/Q /ACTION=upgrade /INSTANCENAME={0} /ENU /IACCEPTSQLSERVERLICENSETERMS";
string instanceName = "YourInstanceNameHere";
string installerFilePath = AppDomain.CurrentDomain.BaseDirectory + "\\SQLEXPR_x86_ENU.exe";
if (!File.Exists(installerFilePath))
{
throw new FileNotFoundException(string.Format("Unable to find installer file: {0}", installerFilePath));
}
Process process = new Process
{
StartInfo = { FileName = installerFilePath, Arguments = String.Format(upgradeArgumentString, instanceName), UseShellExecute = false }
};
process.Start();
if (process.WaitForExit(SQLSERVER_UPGRADE_TIMEOUT))
{
//Do something here when the process completes within timeout.
//What should I do here to determine if the SQL Server Installer completed successfully? Look at just the exit code?
}
else
{
//The process exceeded timeout. Do something about it; like throw exception, or whatever
}
}
catch(Exception ex)
{
//Handle your exceptions here
}