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Software Development Network >> .NET Development

.NET Development

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Object reference not set to an instance of an object - Urgent!
Storing ConnectionString in app.config
Using MessageBox::Show() in VC++.net
Multi-threading reference book
Programmatically creating a PPTP/L2TP server-side session via ASP.NET?
how to update element while create a file
Resource limitation.
DataSet Column Attributes - How/Where?
Unmanaged application using managed library can't find referenced assemblies
Concurrency Control in ADO.NET

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Answer Questions

  • archijack got problem when try to connect a Access database remotely

    Hi everyone, I have a c# desktop application, and it connected to a Access database, everyting was fine, my connection string (in app.config) was: <add key="LocalPath" value="Provider=Microsoft.Jet.OLEDB.4.0; Data Source=c:/app1/database/patientRecords.mdb; User Id=admin; Password=;" /> however, now I need to access this database through Internet, so I change my connection string to: <add key="LocalPath" va ...Show All

  • Arthur Knight Getting started with a web application

    hi, I am getting started with a web application at work. I am familiar with programming but new to ASP.net and a web application  creation. Can some one point me a good learning site online or good books.. Thx, Srilatha http://www.amazon.com/exec/obidos/tg/detail/-/0201760401/104-0929007-8098316 v=glance is a good book if you're an experienced developer.  If you don't have that much development exper ...Show All

  • wiertmir Help authenticating against NT

    I have a VB app that I want a user to have to login to. Rather than store passwords myself, I want the application to prompt the user for login credentials and then authenticate against NT. I read a previous post about using ActiveDirectoryMembershipProvider I am trying to test using the following code: Dim nt As New System.Web.Security.ActiveDirectoryMembershipProvider MsgBox(nt.ValidateUser(txtUserName.Text, txtPassword.Text) ...Show All

  • zhaoqiang Why does ArrayList not have a Get(int index) method??!

    Hi there, Why does ArrayList not have a Get(int index) method Java's version does and this is exactly what I need because I want to pick out certain objects in the list and make a new list from them. It seems silly that it doesn't. Using Enumerators is fine if you want to go through the whole list. But I want to look at individual objects in the list at random places. Is there another List class that I can use or another way I can do this Tha ...Show All

  • Paul Laudeman Interview question in CLR

    Hi, Can any one give me some interview question in CLR. Regards, Srinivasa D Parupalli. Some links that cover various interview topics: http://blog.daveranck.com/archive/2005/01/20/355.aspx http://www.techinterviews.com/index.php cat=9 Interview Questions: C# http://blogs.crsw.com/mark/articles/252.aspx Interview Questions: ASP.NET http://blogs.crsw.com/mark/articles/254.aspx Interview Questions: .NET ...Show All

  • bigJimmy [system.net.mail.smtpclient]: Does anyone know of a *real* way to validate a successful email send?

    I've looked in the intellisense, online .Net docs, and on here... long story short i can send email but want to read the status code of those emails... preferably the SMTP status code. so far the only close solution to verifying a successful send is using the mailmsg.deliverynotificationoptions.. but that's hardly a solution... that is based on a return email for delivery notification... for catching errors it's easy enough... just try/cat ...Show All

  • jbv WSE 3.0 Problem

    Hi, I am using WSE 3.0 Oct CTP. I have following problem:- Unable to instantiate the WSE class created by adding the web reference. There is an issue with respect to the loading of configuration. I get the following error:-- An error occurred creating the configuration section handler for microsoft.web.services3: That assembly does not allow partially trusted callers. This was resolved to a bug in VSTO. ...Show All

  • Francy Remoting Configuration in VS2005

    Hi there, I'm trying to configure the remoting services and channels of an application using the app.config file in VS2005. It keeps giving me an error telling me that it... Could not find schema information for the element 'application' as well an error for every other child element under the <system.runtime.remoting> element. Here is the start of the configuration.... < configuration > <!-- Configiration of t ...Show All

  • Shaurya Anand Setting up Column Binding

    Without using a DataTable, how do you go about setting up column information so that the binding code will use it Basically, I have a data token class that has validation rules in it. So I want to bind to an array of these tokens, instead of using a DataTable (and having to duplicate the validation rules). So I've created a class that's derived from both ArrayList and IBindingList, which has the code for adding a new row. That's working gr ...Show All

  • Erik B. Get Data from relational database with Webservice

    In my database i have 3 tables. One is the master table and the two others are chlid tables. On the webservice I have a dataadaper for each of these tables that accesses stored procedures. With my windows forms programm I search with various parameters for rows in the master tabel. What I now need to now is, how can I find the rows in the two child tables that are related to the rows I selected on the master table and fill them in the ...Show All

  • Jim.C user/group authontication (active directory)

    help !!! we are developing a new project in VB.NET , the startup page recognize the user loggen in , i need to look in the active directory to find if the user is part of authorized group . thanks in advance avner User the following code where GroupDE is a directoryEntry pointing to group you want to check the membership for and UserName contains the CN of the user you are trying to check. ...Show All

  • Reeba Problem about ILMerge

    I have a problem when I merge a assembly. I receive this error message : An exception occurred during merging: Index was outside the bounds of the array. If I exclude that assembly, everything is fine. What can I do with that Thanks. Hi, I want to merge serveral assemblies (named CompA, CompB, CompC...) into a single assembly (named CompX). If I merge CompA & CompB, everything is fine. But if I merge CompA, CompB & ...Show All

  • Gaara_btk Culture Culture

    Hi All, I'd like to add my native language[Myanmar, Burmese] to one of my project. [localization].In other languages, we used to write some keys and value [in chinese] in one text file.And then we make one resource file depend on that text file. Eg: zh-CHT.txt keyFileOpen = '%$$#%%%#%'   <- Like this. I also want to write like that but I can't two fonts in notepad. How to localize the project with the lanugage that did not supporte ...Show All

  • ismard How to dynamically change connection string in generated dataset class?

    I have a project with database classes which are generated from database objects. That is I add a dataset to the project and drag and drop a database object onto it. The problem with this is that I have to give a connectionstring which is stored in the code. This is ok while developing the application. But runtime I want to use another connectionstring, both for security reasons and because each user of the application will correspond to a datab ...Show All

  • Gavan Invoke without dedicated Delegate

    Hi, I'm using Control.Invoke(new MyDelegate(...), params, ...) but don't want to define a dedicates Delegate only for usw with Invoke() (in this case "MyDelegate"). I tried it with anonymous methods, but it doesn't work. Can anybody give me a snippet of code, where this is explained Or isn't it possible without a dedicated Delegate Thanks in advance! You can use the EventHandler or MethodInvoker del ...Show All

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