无法打开登录所请求的数据库 "MyBlogs"。登录失败。 用户 'USER29\student' 登录失败。
“/Blog”应用程序中的服务器错误。

无法打开登录所请求的数据库 "MyBlogs"。登录失败。
用户 'USER29\student' 登录失败。

说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。 

异常详细信息: System.Data.SqlClient.SqlException: 无法打开登录所请求的数据库 "MyBlogs"。登录失败。
用户 'USER29\student' 登录失败。

源错误: 


行 44: string name = TextBox1.Text;
行 45: string psd = TextBox2.Text;
行 46: bool bl = new lognMessage().select(name, psd);
行 47: if (bl == true)
行 48: {

源文件: f:\Blog\Login.aspx.cs 行: 46 

堆栈跟踪: 


[SqlException (0x80131904): 无法打开登录所请求的数据库 "MyBlogs"。登录失败。
用户 'USER29\student' 登录失败。]
  System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +115
  System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +346
  System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +3430
  System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin(Boolean enlistOK) +56
  System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, Boolean ignoreSniOpenTimeout, Int64 timerExpire, SqlConnection owningObject) +383
  System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(String host, String newPassword, Boolean redirectedUserInstance, SqlConnection owningObject, SqlConnectionString connectionOptions, Int64 timerStart) +517
  System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(SqlConnection owningObject, SqlConnectionString connectionOptions, String newPassword, Boolean redirectedUserInstance) +362
  System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, Object providerInfo, String newPassword, SqlConnection owningObject, Boolean redirectedUserInstance) +272
  System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection) +687
  System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnection owningConnection, DbConnectionPool pool, DbConnectionOptions options) +82
  System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject) +558
  System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject) +126
  System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +651
  System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +160
  System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +122
  System.Data.SqlClient.SqlConnection.Open() +229
  DAL.SqlHelp.ExecuteQueryselect(String Sql, SqlParameter[] pras) in E:\黄太洪\黄太洪\Blog\DAL\SqlHelp.cs:44
  DAL.LognDAL.Select(String name, String psd, String type) in E:\黄太洪\黄太洪\Blog\DAL\LognDAL.cs:30
  BLL.lognMessage.select(String name, String psd) in E:\黄太洪\黄太洪\Blog\BLL\lognMessage.cs:24
  Login.Button1_Click(Object sender, EventArgs e) in f:\Blog\Login.aspx.cs:46
  System.Web.UI.WebControls.Button.OnClick(EventArgs e) +96
  System.Web.UI.WebCon