Stories of daily programming
HTTP 500: every web developer has faced this error at least once in his life, and today I want to tell my story… A few days ago I was working on an ASP.NET WebForm application, which consistently showed the error HTTP 500 – Internal server error. Since IIS was configured not to show detailed errors,…
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Good morning guys! A few days ago I was working on an ASP.NET web form application which uses the control library Telerik ASP.NET AJAX. The application worked without problems until it was moved in a new server running Windows Server 2019. Running in the new environment it stopped working and in the browser’s development console…
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,…
Good morning folks! It’s been a few days since the last post, but here I am… Sometimes happen that you have to put a website in maintenance mode. Maybe you are doing some upgrades to your website and you don’t want that users access it while you are working. In this cases, you simply want…
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”,…
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In some of my old projects, I use the Telerik ASP.NET AJAX control library, . Unfortunately, some customers still use Internet Explorer 11 in compatibility mode… and here the problems begins… To be correct the problem begins when we try to force IE11 working from compatibility mode to standard mode using the header: X-UA-Compatible: IE=Edge…
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Suppose you are developing an ASP.NET application and you have to configure write permissions to a certain folder, maybe because you use it as temporary folder to write some data. You don’t want to assign “Everyone – Full control” to the folder because you want to be the most restrictive possibile. Following I’m explaining to…
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Suppose your web application gives this error message in you web browser console: “Failed to decode downloaded font”, followed by the address of the font with the problem. This is something similar to error messages you see in the image below. What you can do?Searching the internet about this problem you can find several solutions,…
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In one of my ASP.NET applications, I was developing a page to extract some data to an xlsx file, and for this purpose I was using the library NPOI. Using Excel to open the xlsx file created by the application, I obtained different results depending on the server where the application was deployed: using some servers…
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