c# - Read For Learn

Convert from List into IEnumerable format

You don’t need to convert it. List<T> implements the IEnumerable<T> interface so it is already an enumerable. This means that it is perfectly fine to have the following: as well as: which could be invoked:

How to execute a stored procedure within C# program

I want to execute this stored procedure from a C# program. I have written the following stored procedure in a SqlServer query window and saved it as stored1: EDITED: This displays the exception Cannot find the stored procedure dbo.test. Do I need to provide the path? If yes, in which location should the stored procedures … Read more

C# Debug – cannot start debugging because the debug target is missing

I am fairly new to C#.. I am using Visual Studio 12, the source I am using was last edited in VS 12.. But my problem is that it’s throwing me this error: First of all, my computer username isn’t Martin, it is Administratoring – The creator of this project is Martin.. So that’s where … Read more

The type or namespace name could not be found

See this question. Turns out this was a client profiling issue. PrjForm was set to “.Net Framework 4 Client Profile” I changed it to “.Net Framework 4”, and now I have a successful build. See this question. Turns out this was a client profiling issue. PrjForm was set to “.Net Framework 4 Client Profile” I … Read more

Get dictionary key by value

Values do not necessarily have to be unique, so you have to do a lookup. You can do something like this: If values are unique and are inserted less frequently than read, then create an inverse dictionary where values are keys and keys are values.

Value does not fall within the expected range

This might be due to the fact that you are trying to add a ListBoxItem with the same name to the page. If you want to refresh the content of the listbox with the newly retrieved values you will have to first manually remove the content of the listbox other wise your loop will try … Read more

get path for my .exe

Socket.Select returns error “An operation was attempted on something that is not a socket”

It turns out the sockets were closed. That’s a really dumb error for .NET to be generating though just because of a closed socket.

How would you count occurrences of a string (actually a char) within a string?

If you’re using .NET 3.5 you can do this in a one-liner with LINQ: If you don’t want to use LINQ you can do it with: You might be surprised to learn that your original technique seems to be about 30% faster than either of these! I’ve just done a quick benchmark with “/once/upon/a/time/” and … Read more

+ More