private static DbConnection MainConn; //= new SqlConnection(ConfigurationManager.ConnectionStrings["SQLDirectDB"].ConnectionString);
#region 连接
/// <summary>
/// 初始化
/// </summary>
/// <param name="dbtype">数据库类型</param>
/// <param name="datasource">数据源</param>
/// <param name="database">数据库</param>
/// <param name="userid">用户名</param>
/// <param name="password">密码</param>
/// <returns></returns>
public static bool Initial(string datasource, string database, string userid, string password)
{
string connnString = DBFactory.BuildConnStr(datasource, database, userid, password);
return(Initial(connnString));
}