Stories of daily programming
Hello my friends! Today I want to talk about some problems encountered using the property Environment.TickCount, available since the version 1.1 of .NET Framework. In a nutshell, this property tells you how many milliseconds elapsed since system boot. Why did I have to use it? During the development of TDP Robot, that I remind you…
Good morning to everyone! I’m sure you already know C#’s async / await keywords and the benefit of asynchronous programming in real world. In my blog we already talked about them in these posts: Working with C# async / await keywords (part 1 of 3) Working with C# async / await keywords (part 2 of…
Today I want to talk you about a problem I faced in these last days working on a ASP.NET web form project. In this project I used the library “UI for ASP.NET AJAX” from Telerik, and in particular the problem occurred using the RadGrid control. What was the problem? In a nutshell, without an explanation,…
I’m developing a C# application which uses the library ClosedXML in order to generate XLSX files, and I ran into this error: “Could not load file or assembly ‘DocumentFormat.OpenXml, Version=2.7.2.0, Culture=neutral, PublicKeyToken=8fb06cb64d019a17’ or one of its dependencies. The system cannot find the file specified.File name: ‘DocumentFormat.OpenXml, Version=2.7.2.0, Culture=neutral, PublicKeyToken=8fb06cb64d019a17′”. It’s weird, because in my development…
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I was working on an old ASP.NET application written in C#, which uses the following method to code to get the IP address of the server it runs on: Apart from the doubt about the correctness of the code to obtain the IP address of the machine, at the line with the call to “Dns.GetHostEntry”,…
Read More “System.Net.Sockets.SocketException (0x80004005): No such host is known” »
Good morning folks! In this post I want to talk about a bug I discovered in my TDP.BaseServices library, which I remember you can download here. This bug prevented from properly deserializing objects I sent through the NetworkStream object. The problem was in the way I read data from a NetworkStream object. If you browse…
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In previous posts we talked about how use the Task object, async / await keywords and how to cancel a running task. In this last post I want to talk about another important point regarding task management: exception handling. We will resume the example program created in the first post, which you can download here….
Read More “Working with C# async / await keywords (part 3 of 3)” »
In the previous post we saw some use cases of the Task object and the async / await keywords. We saw how we can run two long tasks, one dependent on the other, without blocking the main thread and the user interface. In our example we used an async event handler, which is marked with…
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Introduced with C# 5.0, the async / await pattern was born with the intention of simplifying asynchronous programming. You can find these keywords in many programming language, but in this post we will specifically talk about C#’s implementation. Let’s start by creating a simple Windows Forms applications to do some tests (click here to download…
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If you are working on a Windows Forms project and you are using threads in some way, by accessing the controls from a thread other than the main one, you may have received this error message: System.InvalidOperationException: ‘Cross-thread operation not valid: Control ‘TxtCounter1′ accessed from a thread other than the thread it was created on.’…
Read More “Make user interface calls in thread safe way in Windows Forms” »