public static ServerVersionNumber RetrieveServerVersionFromFile(String filePath)
{
FileStream fStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
fStream.Seek(16, SeekOrigin.Begin);
byte[] versionHeaderBytes = new byte[4];
fStream.Read(versionHeaderBytes, 0, versionHeaderBytes.Length);
uint versionHeader = BitConverter.ToUInt32(versionHeaderBytes, 0);
ServerVersionNumber result = ServerVersionNumber.VERSION_UNKNOWN;
switch (versionHeader)
{
case 0x002dd714:
result = ServerVersionNumber.VERSION_3_0;
break;
case 0x00357b9d:
result = ServerVersionNumber.VERSION_3_5;
break;
case 0x003d0900:
result = ServerVersionNumber.VERSION_4_0;
break;
default:
result = ServerVersionNumber.VERSION_UNKNOWN;
break;
}
fStream.Close();
return(result);
}
public bool OpenDatabase(String databasePath, String password)
{
CloseDatabase();
bool result = false;
_databasePath = databasePath;
ServerVersionFromFile = Utilities.RetrieveServerVersionFromFile(databasePath);
switch (ServerVersionFromFile)
{
case ServerVersionNumber.VERSION_3_0:
IDatabaseInstance = SqlServerCE3_1Database.CreateInstance(databasePath, password);
break;
case ServerVersionNumber.VERSION_3_5:
IDatabaseInstance = SqlServerCE3_5Database.CreateInstance(databasePath, password);
break;
case ServerVersionNumber.VERSION_4_0:
IDatabaseInstance = SqlServerCE4_0Database.CreateInstance(databasePath, password);
break;
default:
break;
}
try
{
IDatabaseInstance.OpenConnection();
if (IDatabaseInstance.ConnectionState == ConnectionState.Open)
{
UpdateInfoSchemaTV();
result = true;
}
else
{
CloseDatabase();
}
}
catch (Exception exc)
{
Debug.WriteLine(exc.Message);
}
return(result);
}
