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• ado.net slow updating large tables

  - by brett

  The problem: 100,000+ name & address records in an access table (2003). Need to iterate through the table & update detail with the output from a 3rd party dll. I currently use ado, and it works at an acceptable speed (less than 5 minutes on a network share). We will soon need to update to access 2007 and its 'non jet' accdb format to maintain compatability with clients. I've tried using ado.net datsets, but updating the records takes hours! We process 5-10 of these tables per day - so this cannot be a solution. Any ideas on the fastest way to update individual records using ado.net? Surely we didn't take such a hugh backward step with ado.net? Any help would be appreciated.

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• "The provider is not compatible with the version of Oracle client"

  - by psyb0rg

  I just put my asp .net web service on a remote host. The service accesses an oracle db on my local machine. The service worked fine when it was running on localhost but since moving to a remote hos, I get The provider is not compatible with the version of Oracle client at Oracle.DataAccess.Client.OracleInit.Initialize() at Oracle.DataAccess.Client.OracleConnection..cctor() --- End of inner exception stack trace --- at Oracle.DataAccess.Client.OracleConnection..ctor(String connectionString) at.... I know the error is related to the data provider version running on the server/client. In my case, the only dll I referenced in the project was Oracle.DataAccess So how do I go about solving this? Note that I won't be able to change anything on the web host other than my own project. My local machine is running Oracle 11g Thanks.

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• recommendations for rich scalable internet application

  - by Wouter Roux

  I am planning to develop a web application that must perform the following actions: User authentication allow authenticated user to download data from USB device (roughly 5 meg data) upload the data from the USB device to processing server process the data and display the results to the user further requirements/restrictions: the USB driver supports windows (2000, XP, Vista, 7) the application must support IE, Firefox and Chrome the USB driver must be installed when pointing to the web application the first time the USB driver exposes functionality through exported functions in dll scalability and eye candy is important server details: Windows Server 2008 Enterprise x64, IIS 7.0, SQL server 2008 With the limited details specified: What technology would you recommend? (eg silverlight/asp.net mvc/wcf). What practices/patterns/3rd party controls would you recommend?

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• Custom HTMLControl derived from HtmlImage control not visible in VS2008 toolbox

  - by Tinvan

  I have a custom control deriving from HtmlImage control which I cant get to show up on toolbox, it says "There are no components in '...\bin\Debug\ImageCustomControl.dll' that can be placed on the toolbox.". Here is the code for the control: namespace ImageCustomControl { public class ImageHtmlControl : HtmlImage { public override void RenderControl(HtmlTextWriter writer) { this.Src = "https://somedomain.com" + this.Src; base.RenderControl(writer); } } } Here is a post back from 2003 that says its not possible, but just wanted to know if it has changed since: http://www.microsoft.com/mspress/books/sampchap/5728d.aspx Thanks in advance.

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• How to find out who's causing an access violation error?

  - by Fernando

  I'm getting reports that my app is causing a GPF on some Vista machines. The error message is something like this: access violation at 0x75784062 ( tried to write to 0x00000006) In order to fix this, I first need to know exactly who is causing this GPF: my main exe, some third party component, one of my own activex components, a dll, etc... How can I find this out? What tools can pinpoint the exact module that caused this mess? Any help would be greatly appreciated. PS My app is coded in VB6 and my activex controls are written in Delphi 2007.

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• SSIS Script Component Testing Strategy

  - by Paul Kohler

  This question is in respect to the script component specifically. I am aware of ssisUnit etc… With simple SSIS Scripts Components, it’s sufficient to let basic testing flesh out issues, however I am working with a script that has grown in complexity over time. To better test the functionality I am considering abstracting the script logic into a DLL that gets deployed with the package, and then use the custom component in the script. The advantage is that the function will be more testable etc but it’s one more deployment artefact that needs to be managed. My question is, does anyone know of a better way to test such an SSIS script in a more isolated manner than to run the whole package and examine the output?

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• C#: Farm out jobs to worker processes on a multi-processor machine

  - by Andrew White

  Hi there, I have a generic check that needs to be run on ca. 1000 objects. The check takes about 3 seconds. We have a server with 4 processors (and we also have other multi-processor servers in our network) so we would like to create an exe / dll to do the checking and return the results to the "master". Does anyone know of a framework for this, or how would one go about it in C#? Specifically: * What's the best way to transfer data between the master and the worker process? * How would the master ensure that always 4 processes are running at any one time and as soon as a worker process is finished start a new one. * How to register that the worker is finished and append it's results to a list? Hope it's clear enough but happy to clarify. A.

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• How to deploy RESTful Web Service onto IIS

  - by Chris Lee

  Hi all, I'm new to .Net and IIS. I've created a simple RESTful Web Service in VS2008 and .net 3.5 framework using WCF. I've tested it well with F5 debugging in VS(seems it is auto deployed on Windows Service). Now I want to deploy it on my IIS server so that I can use it remotely. But I cannot find any guide for this. I manually deployed my service folder just as an ASP.net site. But seems it does not work(keep showing 401 error). Can anyone tell me how to deploy it to IIS? It contains a simple GET method and I hope it can be accessed by anomynous clients (because the host IP is 192.168..). I have a web.config file, a .dll and .pdb under /bin folder, a Global.asax and .svc file for my service. The IIS server is on the same machine. Thanks a million.

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• Default Accessor Needed: Custom ConfigurationSection

  - by Mark

  I am totally confused by a simple Microsoft error message. When I run XSD.exe against an assembly that contains a custom ConfigurationSection (which in turn utilizes a custom ConfigurationElement and a custom ConfigurationElementCollection, as well as several ConfigurationProperties), I get the following error message: Error: There was an error processing 'Olbert.Entity.Utils.dll'. There was an error reflecting type 'Olbert.Entity.DatabaseConnection'. You must implement a default accessor on System.Configuration.ConfigurationLockCollection because it inherits from ICollection. Yet the class in question has a default accessor: public object this[int idx] { get { return null; } set { } } I realize the above doesn't do anything, but I don't need to access the element's properties by index. I'm just trying to work around the error message. So what's going on?

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• Error C2491 on C source with Visual studio 8

  - by Tobia

  i'm really noob in C. I just need to compile a ANSI C source to get a dll. During compilation i get this error: C2491: 'SelectML': definition of dllimport function not allowed Where SelectML is a public function with this definition: int CALLINGCONV SelectML(WORD fid, int nSlot) { WORD SW; int x; BYTE pSend[2]; pSend[0]=(BYTE)((fid&0xff00)>>8); pSend[1]=(BYTE)(fid&0x00ff); x=SendAPDUML(hCards[nSlot],APDU_SELECT,2,0,pSend,0,&SW); if (x!=C_OK) return x; if (SW!=0x9000) return SW; return C_OK; } I'm sure the C source is good, maybe it is just a Visual Studio configuration...

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• Using Thrift to connect to Cassandra from .NET

  - by vtortola

  Hi, I'm interested in Cassandra and I'd like to test it at home in my Windows XP computer. I've found instructions for install an run Cassandra in Windows, and it's already up and running; I've also found the thrift executable for Windows and generate the C# interfaces, but... when I try to compile that generated code in Visual Studio I got : "The type or namespace name 'Thrift' could not be found (are you missing a using directive or an assembly reference?)", so I'm missing something else, but I cannot find what... What is it? Is it a dll? I've looked in the thrift code and I cannot find anything related to .net , so what am I missing? Thanks in advance. Regards.

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• Providing SaaS functionality to a .NET portal with DLLs

  - by Abdullah Jibaly

  I'm not sure I'm asking the right question here, but I'm looking to provide web based functionality from one ASP.NET application to another remote 'portal-like' application. Is it possible to simply give the portal a DLL? As an example, let's say the SaaS web app has a patient-entry form that I want to be able to use from the portal application. I would like the portal app to be able to set preferences (permissions, color, style, etc), make a function call, and have that capability presented within a certain div or something. Is there any .NET technologies that provide this kind of integration?

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• Multiple .NET processes memory footprint

  - by mr.b

  I am developing an application suite that consists of several applications which user can run as needed (they can run all at the same time, or only several..). My concern is in physical memory footprint of each process, as shown in task manager. I am aware that Framework does memory management behind the curtains in terms that it devotes parts of memory for certain things that are not directly related to my application. The question. Does .NET Framework has some way of minimizing memory footprint of processes it runs when there are several processes running at the same time? (Noobish guess ahead) Like, if System.dll is already loaded by one process, does framework load it for each process, or it has some way of sharing it between processes? I am in no way striving to write as small (resource-wise) apps as possible (if I were, I probably wouldn't be using .NET Framework in the first place), but if there's something I can do something about over-using resources, I'd like to know about it.

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• Using Fluent NHibernate with Castle Windsor and the NHibernate Facility

  - by Andrew

  Ive managed to get Fluent NHibernate 1.1 playing nicely with Castle Windsor 2.1. This involved me recompiling NHibernate.ByteCode.Castle.dll and it all works fine. Ive managed to do the same thing this time with Castle Windsor 2.5, havent tried it yet but its not complaining which is good enough for me at the moment. However Im also using the Castle NHibernate Facility and that is another story. The version of the NHibernate Facility that is compatible with Castle 2.5 requires a much later version of NHibernate. Is there an easy way to get the NHibernate Facility to work with NHibernate 2.1 and Castle Core 2.5?

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• "Failed to find or load the registered .Net Framework Data Provider" with MySQL + ASP.NET

  - by Malachi

  How do we repair this? This question has been sort of addressed many times around the internet, but it's always a workaround. Always copying the MySql.data.dll into your bin directory, or explicitly stating what version you want. What is the "proper" approach to using DbProvderFactory for MySQL with ASP.NET? I'd like to be able to develop locally and not worry what version they have installed on the server. As it stands, if I do copy up my own version I have to make sure it's the one they use. Seems easy to break.

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• Which IOC runs in medium trust

  - by Rippo

  Hi I am trying to get a website running with Mosso that has Castle Windsor as my IOC, however I am getting the following error. [SecurityException: That assembly does not allow partially trusted callers.] GoldMine.WindsorControllerFactory..ctor() in WindsorControllerFactory.cs:33 GoldMine.MvcApplication.Application_Start() in Global.asax.cs:70 My questions are Does Castle Windsor run under medium trust? Can I download the DLL's without having to recompile with nant? (as I don't have this set up and don't know nant at all) Or is there another IOC that I can use that I can download and works in Medium Trust? Thanks

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• Softrware Licensing / Registration component/framework?

  - by Clay Nichols

  We use a home-grown Registration System for our software but I'd like to update it fixing a number of things including adding the ability to remotely activate/deactivate it (to facilitate Saas). Feel free to suggest any good (in your opinion) VB6- compatible option. I can check out whether it meets our other criteria below. Required Features: Activate multiple programs (Ok if it generates a separate code for each one) Works with VB6 and VB.net. A VB6-compatible DLL should be fine. Still supported (nice to have but not absolutely required Compatible with Windows 2000 through 7. Nice-to-have features (but not required) * Work without internet access * Works through a firewall (this may be a tough one) Any suggestions?

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• Fluent NHibernate SchemaExport to SQLite not pluralizing Table Names

  - by weenet

  I am using SQLite as my db during development, and I want to postpone actually creating a final database until my domains are fully mapped. So I have this in my Global.asax.cs file: private void InitializeNHibernateSession() { Configuration cfg = NHibernateSession.Init( webSessionStorage, new [] { Server.MapPath("~/bin/MyNamespace.Data.dll") }, new AutoPersistenceModelGenerator().Generate(), Server.MapPath("~/NHibernate.config")); if (ConfigurationManager.AppSettings["DbGen"] == "true") { var export = new SchemaExport(cfg); export.Execute(true, true, false, NHibernateSession.Current.Connection, File.CreateText(@"DDL.sql")); } } The AutoPersistenceModelGenerator hooks up the various conventions, including a TableNameConvention like so: public void Apply(FluentNHibernate.Conventions.Instances.IClassInstance instance) { instance.Table(Inflector.Net.Inflector.Pluralize(instance.EntityType.Name)); } This is working nicely execpt that the sqlite db generated does not have pluralized table names. Any idea what I'm missing? Thanks.

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• How many layers are between my program and the hardware?

  - by sub

  I somehow have the feeling that modern systems, including runtime libraries, this exception handler and that built-in debugger build up more and more layers between my (C++) programs and the CPU/rest of the hardware. I'm thinking of something like this: 1 + 2 OS top layer Runtime library/helper/error handler a hell lot of DLL modules OS kernel layer Do you really want to run 1 + 2?-Windows popup (don't take this serious) OS kernel layer Hardware abstraction Hardware Go through at least 100 miles of circuits Eventually arrive at the CPU ADD 1, 2 Go all the way back to my program Nearly all technical things are simply wrong and in some random order, but you get my point right? How much longer/shorter is this chain when I run a C++ program that calculates 1 + 2 at runtime on Windows? How about when I do this in an interpreter? (Python|Ruby|PHP) Is this chain really as dramatic in reality? Does Windows really try "not to stand in the way"? e.g.: Direct connection my binary < hardware?

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• Using Delphi's ShellExecute() with the process inheriting the original console?

  - by Phil

  In C I've used the system() function before in a console application and if I start another process using system() it inherits the console window of the process that called it. In Delphi system() doesn't exist so I'm using ShellExecute() to create a new process, but the new process comes up in a new console window. Is there some way that I can make it inherit the handle of the window that's calling it? I've used function GetConsoleWindow(): HWND; stdcall; external 'kernel32.dll'; to get the console window and passed it in the HWND part of ShellExecute(), but that didn't work.

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• How do I consume a COM+ local server from C#?

  - by Mystere Man

  I have a web application from a company that has gone out of business. We're looking to extend the web app a bit with some asp.net functionality. The web app was written as an ISAPI application in Delphi, and uses COM+ to talk to the SQL Server and handles things like session management and authentication. So, in order to get the current user and other details, I have to use the undocument COM+ components. I was able to dig out the type library and auto generated IDL, but at this point i'm lost in creating a .NET proxy class for this. Is there a way to autogenerate the .net COM+ proxy either from the .dll itself (extracting the typelib info) or from the IDL? Note: These seem to be simple COM style objects hosted in COM+ servers, no subscriptions or transaction monitoring..

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• IIS errors since upgrading to dot net 4

  - by user376085

  Back in October we upgraded one of our sites (on IIS 6) from .net 3.5 to .net 4.0. Since then we have been getting the following warning and error pretty much everyday: Warning: ISAPI 'c:\windows\microsoft.net\framework\v4.0.30319\aspnet_isapi.dll' reported itself as unhealthy for the following reason: 'Deadlock detected'. Error: It is not possible to run two different versions of ASP.NET in the same IIS process. Please use the IIS Administration Tool to reconfigure your server to run the application in a separate process. We have checked all applications and ensured that they are running on the correct versions of ASP.NET and also in their own separate app pools. We have looked at the IIS logs at the time the errors are recorded but this doesn't give any clues as to the issue. Is there a tool available that could give us more information as as to which application is causing the errors and what was happening at the time?

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• MSXML2.ServerXMLHTTP.4.0 Source?

  - by Frank V

  Where does the object "MSXML2.ServerXMLHTTP.4.0" come from? Which install package? I'm attempting to do the following: Set oXMLHTTP = CreateObject("MSXML2.ServerXMLHTTP.4.0") This attempt fails on my development machine (no object is returned) but it is successful on my collage's development machine. Obviously he has something installed that I don't or vice versa but where does this object, dll, etc come from? What would I need to install to get this call to work. For the record, changing the object to a different version isn't an option because code that this depends on was tested for several days against this specific version. We'd have to go back and test again... To expand on this question, how can I tell which version of MS XML is currently installed?

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• ASP.NET: Turning on errors

  - by JamesBrownIsDead

  This is what I see when I visit my web site. How do I instead get the Yellow Screen of Death so I know what the error is? I have GoDaddy shared hosting and I think the problem is that I don't have the correct MVC binaries in the /bin folder. My web.config shows this: <add assembly="System.Web.Mvc, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add assembly="System.Web.Abstractions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> <add assembly="System.Web.Routing, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/> But I'm not positive I copied the right .DLL files into /bin. I've got like 8 of each file--which version is which?!

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• For a .Net project, what file extensions should I exclude from source control?

  - by arame3333

  Everytime I start a project I have to think carefully about which files to exclude from source control. Has someone made a list of the criteria so I can look it up from the beginning? I work on my own so I have not got round to it. I appreciate that in the case of a DLL, you would want to include some and exclude others, so it is not just dependent on the file extension. My projects are ASP.Net, although a general discussion of other templates would also be useful.

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