待機操作がタイムアウトしました。ASP.NET

Question

全体ではなく、自分のサイトでただ1つのWebページを開くときにエラーが発生しました。私が取り組んでいる2つのページは以下の通りです。管理者がサイト上のアイテムを編集できるようにするための場所です。本当に助けが必要です。 スタックトレース：

[Win32Exception (0x80004005): The wait operation timed out] 

[SqlException (0x80131904): A connection was successfully established with the server, but then an error occurred during the pre-login handshake. (provider: SSL Provider, error: 0 - The wait operation timed out.)] 
    System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection, Action`1 wrapCloseInAction) +6568558 
    System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj, Boolean callerHasConnectionLock, Boolean asyncClose) +717 
    System.Data.SqlClient.TdsParser.ConsumePreLoginHandshake(Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean& marsCapable) +1730 
    System.Data.SqlClient.TdsParser.Connect(ServerInfo serverInfo, SqlInternalConnectionTds connHandler, Boolean ignoreSniOpenTimeout, Int64 timerExpire, Boolean encrypt, Boolean trustServerCert, Boolean integratedSecurity, Boolean withFailover) +693 
    System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean ignoreSniOpenTimeout, TimeoutTimer timeout, Boolean withFailover) +219 
    System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover(ServerInfo serverInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString connectionOptions, SqlCredential credential, TimeoutTimer timeout) +6597311 
    System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist(TimeoutTimer timeout, SqlConnectionString connectionOptions, SqlCredential credential, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance) +6597891 
    System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData) +942 
    System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) +1162 
    System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) +72 
    System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) +6601145 
    System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) +103 
    System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +2102 
    System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +116 
    System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +1079 
    System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +6605639 
    System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +233 
    System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +278 
    System.Data.SqlClient.SqlConnection.Open() +239 
    System.Data.Common.DbDataAdapter.FillInternal(DataSet dataset, DataTable[] datatables, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +292 
    System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, Int32 startRecord, Int32 maxRecords, String srcTable, IDbCommand command, CommandBehavior behavior) +420 
    System.Data.Common.DbDataAdapter.Fill(DataSet dataSet, String srcTable) +277 
    System.Web.UI.WebControls.SqlDataSourceView.ExecuteSelect(DataSourceSelectArguments arguments) +3326091 
    System.Web.UI.DataSourceView.Select(DataSourceSelectArguments arguments, DataSourceViewSelectCallback callback) +28 
    System.Web.UI.WebControls.DataBoundControl.PerformSelect() +313 
    System.Web.UI.WebControls.ListView.PerformSelect() +124 
    System.Web.UI.WebControls.BaseDataBoundControl.EnsureDataBound() +146 
    System.Web.UI.WebControls.ListView.CreateChildControls() +80 
    System.Web.UI.Control.EnsureChildControls() +189 
    System.Web.UI.Control.PreRenderRecursiveInternal() +60 
    System.Web.UI.Control.PreRenderRecursiveInternal() +222 
    System.Web.UI.Control.PreRenderRecursiveInternal() +222 
    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +4297 

itemediting.aspx：

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="itemediting.aspx.cs" Inherits="admin_itemediting" %> 

<!DOCTYPE html> 

<html xmlns="http://www.w3.org/1999/xhtml"> 
<head runat="server"> 
    <title>elmtree - Admin</title>  
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script> 

<!-- Latest compiled and minified CSS --> 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" /> 

<!-- Optional theme --> 
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap-theme.min.css" /> 

<!-- Latest compiled and minified JavaScript --> 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> 
<link rel="stylesheet" href="../styles/mylist.css" /> 

</head> 
<body> 
    <form id="form1" runat="server"> 

     <img src="images/ELleft.png" style="width:226px; height:52px; margin-top: 3px; margin-left: 17px; text-align: justify; float: none;"/></a></li> 

<div class="container"> 
    <h1> Item Edit </h1> </div>  
     <div class="container">  
      <div class="form-group">  
       <label class="col-sm-2 control-label">Item name: </label>  
       <div class="col-md-4"> 
        <asp:TextBox ID="itemnametext" runat="server" Text="" CssClass="form-control">  
        </asp:TextBox> 
       </div> 
       <div class="pull-right"> 
        <asp:Button CssClass="btn btn-primary btn-lg" ID="updatebutton" role="button" runat="server" Text="save" OnClick="updatebutton_Click" /> 
       </div> 
      </div>  
     </div>    
     </form> 
    </body> 
    </html> 

itemediting.aspx.cs：言及@masonとして

using System; 
using System.Collections.Generic; 
using System.Linq; 
using System.Web; 
using System.Web.UI.WebControls;  
using System.IO; 
using System.Data; 
using System.Data.SqlClient; 
using System.Web.Configuration;  

public partial class admin_itemediting : System.Web.UI.Page{ 

    protected void Page_Load(object sender, EventArgs e) 
    { 
     if (!IsPostBack) 
     { 
      int row = 0; 
      if (Request.QueryString["itemID"] != null) 
      {  
       row = int.Parse(Request.QueryString["itemID"]); 
      } 
      else 
      { 
       Response.Redirect("itemedit.aspx"); 
      }  
     } 

     string connectionString = WebConfigurationManager.ConnectionStrings 
      ["ConnectionString"].ConnectionString; 

     SqlConnection myConnection = new SqlConnection(connectionString);  
     myConnection.Open();  
     string query = "SELECT * FROM reports WHERE ID=@rowid";   
     SqlCommand myCommand = new SqlCommand(query, myConnection);  
     myCommand.Parameters.AddWithValue("@rowid", row);  
     SqlDataReader rdr = myCommand.ExecuteReader(); 

     while (rdr.Read()) 
     { 
      string myname = rdr["itemname"].ToString();  
      itemnametext.Text = myname; 
     } 
    } 

    protected void updatebutton_Click(object sender, EventArgs e){ 

     string connectionString = WebConfigurationManager.ConnectionStrings ["ConnectionString"].ConnectionString;  
     SqlConnection myConnection = new SqlConnection(connectionString);  
     myConnection.Open();  
     string itemnametextupdate = itemnametext.Text;  
     string query = "UPDATE reports SET itemname = @itemnewname";   
     SqlCommand myCommand = new SqlCommand(query, myConnection);  
     myCommand.Parameters.AddWithValue("@itemnewname", itemnametextupdate);  
     myCommand.ExecuteNonQuery();  
     myConnection.Close();  
     Response.Redirect("updateimage.aspx");  
    } 

    public object row { get; set; } 
} 

Answer 1

は、あなたがDispose()時にあなたを呼び出すことを確認する必要がありますIDisposableを実装するもので行われます。

変更あなたはSqlConnection、SqlCommandとSqlDataReaderを扱うコード：

string query = "SELECT * FROM reports WHERE ID=@rowid"; 

using (SqlConnection myConnection = new SqlConnection(connectionString)) 
using (SqlCommand myCommand = new SqlCommand(query, myConnection)) 
{ 
    myCommand.Parameters.AddWithValue("@rowid", row);  
    myConnection.Open(); 

    using (SqlDataReader rdr = myCommand.ExecuteReader()) 
    { 
     while (rdr.Read()) 
     { 
      string myname = rdr["itemname"].ToString();  
      itemnametext.Text = myname; 
     } 
    } 
}