MVC :: Avoiding "ambient" Parameters In ActionLinks
Dec 10, 2010
I have a number of ActionLinks in my site's master page that link off to the various top level pages of my site. Some of these top level pages include an optional "page" parameter, which defaults to 1:
[Code]....
The ActionLink itself appears like:
[Code]....
I expect that the link should show as "/Latest", since no "page" argument is specified in the ActionLink. However, if I'm currently on a different page that has a page parameter (/Author/Person/5) then the ActionLink appears as "Latest/5"!
I've heard this behavior referred to as "ambient parameters", but I haven't seen any way of working around it. setting "page" to null in the ActionLink, but that's not a general solution - some pages have more than one parameter and they aren't always called page.
How do I create a link through MVC that does not include any inherited/ambient parameters?
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May 20, 2010
I am trying to use a transaction scope in a transaction-per-request pattern. So I have a http module that do (simplified):
private void Application_BeginRequest(object sender, EventArgs e)
{
var scope = new TransactionScope(TransactionScopeOption.RequiresNew);
PutScopeInHttpContext(scope);
}
private void Application_EndRequest(object sender, EventArgs e)
{
var scope = GetScopeFromHttpContext();
try
{
if (HttpContext.Current.Error == null)
{
scope.Complete();
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finally
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scope.Dispose();
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Then, in my web.config, I have:
<httpModules>
<clear/>
<add name="OutputCache" type="System.Web.Caching.OutputCacheModule"/>
<add name="Session" type="System.Web.SessionState.SessionStateModule"/>
<add name="Profile" type="System.Web.Profile.ProfileModule"/>
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<add name="TransactionPerRequestWebModule" type="Acme.Web.TransactionPerRequestWebModule, Acme.Web"/>
</httpModules>
<sessionState mode="SQLServer" sqlConnectionString="Data Source=localhostSQLEXPRESS;Integrated Security=SSPI;" cookieless="false" timeout="360"/>
Now, at what seem like randomly rate, roughly 1 page out of ten gives me the following error:
[SqlException (0x80131904): Distributed transaction completed. Either enlist this session in a new transaction or the NULL transaction.]
System.Data.SqlClient.SqlConnection.OnError(SqlException exception, Boolean breakConnection) +1951450
System.Data.SqlClient.SqlInternalConnection.OnError(SqlException exception, Boolean breakConnection) +4849003
System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning(TdsParserStateObject stateObj) +194
System.Data.SqlClient.TdsParser.Run(RunBehavior runBehavior, SqlCommand cmdHandler, SqlDataReader dataStream, BulkCopySimpleResultSet bulkCopyHandler, TdsParserStateObject stateObj) +2394
System.Data.SqlClient.SqlDataReader.ConsumeMetaData() +33
System.Data.SqlClient.SqlDataReader.get_MetaData() +83
System.Data.SqlClient.SqlCommand.FinishExecuteReader(SqlDataReader ds, RunBehavior runBehavior, String resetOptionsString) +297
System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async) +954
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, DbAsyncResult result) +162
System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method) +32
System.Data.SqlClient.SqlCommand.ExecuteReader(CommandBehavior behavior, String method) +141
System.Data.SqlClient.SqlCommand.ExecuteReader() +89
System.Web.SessionState.SqlSessionStateStore.DoGet(HttpContext context, String id, Boolean getExclusive, Boolean& locked, TimeSpan& lockAge, Object& lockId, SessionStateActions& actionFlags) +516
[HttpException (0x80004005): Unable to connect to SQL Server session database.]
System.Web.SessionState.SqlSessionStateStore.ThrowSqlConnectionException(SqlConnection conn, Exception e) +229
System.Web.SessionState.SqlSessionStateStore.DoGet(HttpContext context, String id, Boolean getExclusive, Boolean& locked, TimeSpan& lockAge, Object& lockId, SessionStateActions& actionFlags) +649
System.Web.SessionState.SqlSessionStateStore.GetItemExclusive(HttpContext context, String id, Boolean& locked, TimeSpan& lockAge, Object& lockId, SessionStateActions& actionFlags) +48
System.Web.SessionState.SessionStateModule.GetSessionStateItem() +117
System.Web.SessionState.SessionStateModule.BeginAcquireState(Object source, EventArgs e, AsyncCallback cb, Object extraData) +487
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System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +155
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//
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[code]....
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[Code]....
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[Code]....
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[Code]....
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[code]....
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[Code].....
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[code]....
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