/// <summary>
/// 摘要：根据驱动创建数据库核心实例。
/// </summary>
/// <param name="connectionString">数据库连接串</param>
/// <param name="path">数据库驱动配置文件路径</param>
/// <returns>返回DB实例对象，若返回值为null为不可识别的数据库类型。</returns>
public static DBCoreBase CreateDBByProvider(string connectionString, string path)
{
DBCoreBase DB = null;
if (connectionString == string.Empty)
{
return(DB);
}
string provider = connectionString.Split(';')[0].Split('=')[1].ToString();
string DBName = string.Empty;
DBInstance DBi = new DBInstance();
DBi.TagData = path;
List <string[]> where = new List <string[]>();
where.Add(new string[] { "Provider LIKE '%{0}%'", provider });
DataTable dt = DBi.GetDataSet("SELECT * From DBType", where);
if (dt.Rows.Count > 0)
{
DBName = dt.Rows[0]["Name"].ToString();
DB = (DBCoreBase)Assembly.Load("Service.Common").CreateInstance("Service.Common.DB." + DBName + "Core");
DB.DBprovider = provider;
DB.ConnectionString = connectionString;
}
return(DB);
}
