我正在使用来自CodeProject的ServiceBrokerClass。但现在当我尝试使用EnityFramework和.Net WPF将任何记录保存到数据库中时。我收到以下错误。
ServiceBrokerUtility类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Data.Objects;
using System.Collections;
using System.Data.SqlClient;
using System.Runtime.Remoting.Messaging;
using System.Collections.Specialized;
namespace JIMS.UtilityClasses
{
// see http://www.codeproject.com/KB/database/autorefresh_ef_ssb.aspx
public static class ServiceBrokerUtility
{
private static readonly List<string> connectionStrings = new List<string>();
private const string sqlDependencyCookie = "MS.SqlDependencyCookie";
private static ObjectContext objectContext;
private static RefreshMode refreshMode;
private static readonly Dictionary<string, IEnumerable> collections = new Dictionary<string, IEnumerable>();
static public void AutoRefresh(this ObjectContext objectContext, RefreshMode refreshMode, IEnumerable collection)
{
string efConnStr=System.Configuration.ConfigurationManager.ConnectionStrings[objectContext.Connection.ConnectionString.Replace("name=", "").Trim()].ConnectionString;
string dbConnectionString = new System.Data.EntityClient.EntityConnectionStringBuilder(efConnStr).ProviderConnectionString;
if (!connectionStrings.Contains(dbConnectionString))
{
connectionStrings.Add(dbConnectionString);
SqlDependency.Start(dbConnectionString);
}
ServiceBrokerUtility.objectContext = objectContext;
ServiceBrokerUtility.refreshMode = refreshMode;
AutoRefresh(collection);
}
/// <summary>
/// Stops the auto refresh.
/// </summary>
/// <param name="collection">The collection.</param>
static public void StopAutoRefresh(IEnumerable collection)
{
var kvp = collections.FirstOrDefault(x => x.Value == collection);
if (!kvp.Equals(new KeyValuePair<string, IEnumerable>()))
collections.Remove(kvp.Key);
}
static private void AutoRefresh(IEnumerable collection)
{
var oldCookie = CallContext.GetData(sqlDependencyCookie);
try
{
var dependency = new SqlDependency();
collections.Add(dependency.Id, collection);
CallContext.SetData(sqlDependencyCookie, dependency.Id);
dependency.OnChange += dependency_OnChange;
objectContext.Refresh(refreshMode, collection);
}
finally
{
CallContext.SetData(sqlDependencyCookie, oldCookie);
}
}
static void dependency_OnChange(object sender, SqlNotificationEventArgs e)
{
if (e.Info == SqlNotificationInfo.Invalid)
{
return;
}
try
{
var id = ((SqlDependency)sender).Id;
IEnumerable collection;
if (collections.TryGetValue(id, out collection))
{
collections.Remove(id);
AutoRefresh(collection);
var notifyRefresh = collection as INotifyRefresh;
if (notifyRefresh != null)
System.Windows.Application.Current.Dispatcher.BeginInvoke(
(Action)(notifyRefresh.OnRefresh));
}
}
catch (Exception ex)
{
System.Diagnostics.Debug.Print("Error in OnChange: {0}", ex.Message);
}
}
}
public interface INotifyRefresh : INotifyCollectionChanged
{
void OnRefresh();
}
}
AutoRefreshCollection类：
namespace JIMS.UtilityClasses
{
public class AutoRefreshCollection<T> : IEnumerable<T>, INotifyRefresh
where T : EntityObject
{
public IEnumerable<T> objectQuery;
public AutoRefreshCollection(ObjectQuery<T> objectQuery, RefreshMode refreshMode)
{
this.objectQuery = objectQuery;
objectQuery.Context.AutoRefresh(refreshMode, this);
}
public void StopAutoRefresh()
{
ServiceBrokerUtility.StopAutoRefresh(this);
}
public IEnumerator<T> GetEnumerator()
{
return objectQuery.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return this.GetEnumerator();
}
public void OnRefresh()
{
try
{
if (this.CollectionChanged != null)
CollectionChanged(this,
new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
}
catch (Exception ex)
{
System.Diagnostics.Debug.Print("Error in OnRefresh: {0}", ex.Message);
}
}
public event NotifyCollectionChangedEventHandler CollectionChanged;
}
}
我的代码：
public void Create()
{
try
{
dbContext.AddToLedgers(
new JIMSDAL.Ledger
{
LedgerName = LedgerName,
Group = LedgerGroup,
Street = Street,
City = City,
PinCode = PinCode,
State = State,
Phone = Phone,
TIN = TIN,
Balance = Balance
}
);
dbContext.SaveChanges();
JIMSMessage.Show("Ledger Created Successfully.");
Clear();
}
}
任何人都可以帮我这个。
内部异常堆栈跟踪：
at System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection)
at System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning()
at System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj)
at System.Data.SqlClient.TdsParser.TdsExecuteTransactionManagerRequest(Byte[] buffer, TransactionManagerRequestType request, String transactionName, TransactionManagerIsolationLevel isoLevel, Int32 timeout, SqlInternalTransaction transaction, TdsParserStateObject stateObj, Boolean isDelegateControlRequest)
at System.Data.SqlClient.SqlInternalConnectionTds.ExecuteTransactionYukon(TransactionRequest transactionRequest, String transactionName, IsolationLevel iso, SqlInternalTransaction internalTransaction, Boolean isDelegateControlRequest)
at System.Data.SqlClient.SqlInternalConnectionTds.ExecuteTransaction(TransactionRequest transactionRequest, String name, IsolationLevel iso, SqlInternalTransaction internalTransaction, Boolean isDelegateControlRequest)
at System.Data.SqlClient.SqlInternalConnection.BeginSqlTransaction(IsolationLevel iso, String transactionName)
at System.Data.SqlClient.SqlInternalConnection.BeginTransaction(IsolationLevel iso)
at System.Data.SqlClient.SqlConnection.BeginDbTransaction(IsolationLevel isolationLevel)
at System.Data.Common.DbConnection.BeginTransaction(IsolationLevel isolationLevel)
at System.Data.EntityClient.EntityConnection.BeginDbTransaction(IsolationLevel isolationLevel)