.net

Question About Abstract Classes?

URL: Link (1) According to this wesbite .. you cannot implement Abstract classes but derive from them. This makes sense and I have read this many times. Like an interface, you cannot implement an instance of an abstract class, however you can implement methods, fields, and properties in the abstract class that can be used by the ch...

MVC: model of type Nullable<T>

I have a partial view that inherits from ViewUserControl<Guid?> - i.e. it's model is of type Nullable<Guid>. Very simple view, nothing special, but that's not the point. Somewhere else, I do Html.RenderPartial( "MyView", someGuid ), where someGuid is of type Nullable<Guid>. Everything's perfectly legal, should work OK, right? But here'...

regex split and extract multiple parts from a string

I am trying to extract some parts of the "Video:" line from below text. Seems stream 0 codec frame rate differs from container frame rate: 30000.00 (300 00/1) -> 14.93 (1000/67) Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\a.3gp': Metadata: major_brand : 3gp5 minor_version : 0 compatible_brands: 3gp5isom Duration: 0...

Problems with generation of dynamic code

This code gif an exception: Invocation exception, please help, I don't know what happen, I think is some thing with the Add because he work when I push onto the stack intergers, and when i push lvalue It's didn't work, thanks static void Main(string[] args) { AppDomain dominioAplicacion = System.Threading.Thread.GetDomain();...

How to add an extra button to the window title bar ?

I've seen that some apps (maybe not .NET apps) that have an extra button on the left from the minimize button on the form's title bar? How can I achieve this in C#? ...

Trying to add functionality to MvcHandler

I am currently trying to add 301 redirect to my routes in MVC to do this I have tried to inherit from the MvcHandler. The handler gets instantited with the right values. but I am never able to debug the overridden methods. can someone show me a working attempt at this? the asp.net pipe simply seems to the doing its own thing... pub...

Is there any option available to align the aspx source page tags in proper format.

Is there any option available to align the aspx page tags properly.and it should avoid empty lines in the source page. I am spending my time on tags aligning. ...

Drawing a relative line in C#

Guys, I know this is going to turn out to be a simple answer, but I can't seem to figure it out. I have a C# Winform application that I am trying to build. I am trying to draw a white line 60 pixels above the bottom of the form. I am using this code: private void MainForm_Paint(object sender, PaintEventArgs e) { e.Graphics.DrawLine(...

dll custom business logic

I've a project where some business logic is separated to an DLL project, this DLL contains the business logic for this software for a specific customer. Now I've a problem after another client with different rules want to implement the software, I need someway that the application load the appropriate dll according to the client using...

Looping over all tabs in IE 8

Question: I want to loop over all open tabs in Internet Exporer (for all open IE windows) and save the URL in a text file. How can I do that ? I have windows 7 32 bit and IE 8. Code for Firefox/Google chrome would also be welcome. ...

inaccurate .NET timer?

I'm developing an application and I need to get the current date from a server (it differs from the machine's date). I receive the date from the server and with a simple Split I create a new DateTime: globalVars.fec = new DateTime(DateTime.Now.Year, DateTime.Now.Month, DateTime.Now.Day, int.Parse(infoHour[0]), int.Parse(infoHour[1]), in...

USB Barcode Scanner and WM_KEYDOWN

I am trying to write a program that can will read a barcode scanner. In addition, I need it to read the input even when the application is not the window in focus (i.e., running in system tray, etc). I found this article, titled Distinguishing Barcode Scanners from the Keyboard in WinForms, that seems to solve the exact problem. It is w...

Detecting validation errors in Silverlight 4

I'm using the new Silverlight 4 support for IDataErrorInfo. So I have a POCO object that has implemented the interface, and when a validation rule fires the Silverlight UI correctly shows the error. So that is all working fine. The POCO object looks like this: public class SomeDomainClass : IDataErrorInfo { public string SomeStri...

Weird compatibility problem with .Net 3.5 and 4.0 assemblies (NATUPnPLib)

I'm having trouble getting NATUPnP 1.0 Type Library to work with Framework 3.5 in Visual Studio 2010. If I use .Net 4.0, it works just fine, but with .Net 3.5, NATUPNPLib's namespace looks excactly like NETCONLib's. For example this Port Forwarding Management Application sample from this site: http://pietschsoft.com/post/2009/02/05/NET-...

How to change id value when using Html.DropDownListFor helper in asp.net mvc 2.0?

Hi I have a partial view that has something like this <%= Html.DropDownListFor(m => m.SelectedProductName, Model.ProductList, "Select a Product") %> Now you can create a new product and edit a existing product. Both editing and creating use the same form. The create is on the main page on load up. Edit popus up in a jquery u.i model...

Getting Prepared/Planning

For the first time, I am trying to create a rather large .NET project. I think the largest one I have made so far was about 6 classes, but this one is already at 14. For the section I'm starting to work on, I'm having some trouble putting everything together in my head, which is what I normally do. I think it's just a little too complex ...

Possible to have empty values with Html For Helpers such as Html.TextBoxFor()?

Hi Is it possible to have to make a html for helper in asp.net mvc 2.0 have a default value of "empty string" Like if I do this Html.TextBoxFor( u => u.ProductName) would render to <input id ="ProductName" name="ProdcutName" type="text" value="Jim" /> Now I don't want the textbox to display jim. I want it to display nothing. <i...

What is the best and simplest http user agent in .NET?

What is the best and simplest http user agent in .NET? I simply want to put in the url have it return the page as a string. ...

Setting HTML Text Element value

In a C# WPF program I'am trying to set the value of a HTML Text element which is defined: <input name="tbBName" type="text" id="tbBName" tabindex="1" /> I tried the following: mshtml.HTMLDocument doc = (mshtml.HTMLDocument)webBrowser1.Document; mshtml.HTMLInputTextElement tbName = (mshtml.HTMLInputTextElement)doc.getElementsByName("t...

Any sample C# project that highlights separate data access layer (using EF) to business logic layer

Hi, I'm interested in having a look at a small sample project that would highlight a good technique to separate data access layer (using Entity Framework) to business logic layer. In C# would be good. That is, it would highlight how to pass data between the layer without coupling them. That is, the assumption here is not to use the E...