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If you are using Visual Studio 2017 version 15.3, it came with new improvements on top of C# 7.0, thus changing the version to 7.1. One of the new change in C# 7.1 is 'default' literal to avoid the redundant information while writing code.

 

In this post, we will learn about this improvement and will also cover how to use this. Continue reading to know about it.

Published by on under .Net | C#

If you are using COM components on your .NET code, you might be already aware of the Marshal.ReleaseComObject and Marshal.FinalReleaseComObject, which are used to release the managed reference to Runtime Callable Wrapper (RCW) of the COM object.

 

If both are used to release COM objects from memory, and you are unsure which one to use, then this post will help you to learn the differences between the calls.

Published by on under .Net | C#

If you are using .NET Framework 2.0 or .NET Framework 3.5, and getting unexpected Runtime Error while repeatedly calling the System.Net.NetworkInformation.Ping.Send method from C# code, this is due to an issue which got resolved in .NET Framework 4.0 and above.

 

Today, we are going to discuss about the issue, the root cause and the workaround to resolve this issue targeting .NET Framework version older than 4.0.

Published by on under .Net | C#

It's often require to parse a string value to another data type, like integer, and there exists a confusion among the developers whether to use the Parse method or the TryParse method that the framework provides to us.

 

In this post, we will discuss the difference between each of those two methods and guide you to understand and pick the preferable one. Continue reading to know more.

Published by on under .Net | C#

Let's continue our 'Back to Basics' series. It's often an interview question to get an idea of the basic knowledge of a candidate. This is one of the simple question that an interviewer may ask during an interview and you should also know this while writing your code.

 

In this post, we are again going to discuss on the basics and this time we will learn the difference between null string and empty string.

Published by on under .Net | C#

StringCollection class is a spcialized collection type present in .NET Framework class libraries. The name itself represents it as a collection of strings. It exposes common methods and properties to manage string collection.

 

If you do not know about this class, in this post we are going learn about it's properties, methods and learn how to use it.

Published by on under .Net | C#

In last few articles we have discussed about NPOI libraries for .NET. There could be some cases, while reading Excel files, you may get an exception with 'The supplied spreadsheet seems to be Excel 5.0/7.0 (BIFF5) format. POI only supports BIFF8 format' as message.

 

In this quick tip, we are going to discuss about this issue, the way to handle it and the way to read the same Excel workbook content.

Published by on under .Net | C#

In the last two articles, we have learned how to use the NPOI library to read Excel 2007 (.xlsx) and Excel 97-2003 (.xls) file format. We have also discussed more about the APIs and shared the code snippet for you to understand it easily.

 

In this article, we will learn how to read Excel 95 and older workbooks easily using the free Apache NPOI libraries in your C#/.NET applications.

Published by on under .Net | C#

Recently, we have learned how to read Excel workbooks using the Microsoft Office COM APIs. As you may already know that the COM APIs are slow while performing operation, we will see another way to read the content which is faster.

 

In this article, we will learn how to read Excel 2007 workbooks using the Apache NPOI libraries which is available freely to use in your application.

Published by on under .Net | C#

You would like to build an application/addin that reads outlook mail and notify the user or would like to do some other operations based on your business need. For this, you will need to use the Microsoft Outlook APIs.

 

Today we are going to see, how this can be done using the Microsoft.Office.Interop.Outlook.dll to read the email from Outlook context and extract the data.

Published by on under .Net | C#

Microsoft released the final version of Visual Studio 2017 and is currently available for download. This release brings a new lightweight and modular installation experience, that you will really love. This also brings a lot of new features to accelerate your development productivity.

 

Find the links below to download the latest version of the Visual Studio 2017, an IDE which every developer must need.

Published by on under .Net | C#

Recently we learnt how to read Microsoft Word and Microsoft Excel document contents (text only) using the interop APIs exposed by Microsoft. Now, what about reading the text content from PowerPoint slides? This can be achievable using another interop assembly file.

 

Today we will discuss how to extract the texts available in PPT files using 'Microsoft.Office.Interop.PowerPoint.dll'. Code has been shared for your easy reference.

Published by on under .Net | C#

Recently, we learned how to read text contents of Microsoft Word document from a .NET application using the APIs exposed in 'Microsoft.Office.Interop.Word.dll'. There may be a business requirement to read contents of Excel sheets too.

 

Today we are going to learn how to read Microsoft Excel documents. The complete source code has been shared for your easy reference.

Published by on under .Net | C#

Recently in a blog post, we discussed, how to detect whether an assembly is digitally signed using the C# programming language and System.Management.Automation.dll from Microsoft. That was one way to get the status of the digital signing.

 

Today we will learn another method to detect the same without using any additional dll references in our project. I hope that, it will much more interesting to learn.

Published by on under .Net | C#

Digital signatures are the public-key primitives of message authentication. In common words, hand written signatures are defined to put authenticity of a file. In digital word, it’s the digital signature binds a person/entity to the digital data.

 

In this blog post, we will learn how to detect whether an assembly (.dll or .exe) is digitally signed. We will use .NET/C# to identify the same. Continue reading to know more on this topic.

Published by on under .Net | C#

In the last blog post, we discussed the C# code to detect whether any antivirus product is already installed in the system. In today's blog post we will learn how to retrieve the installed antivirus software name from the Security Center.

 

Continue reading to grab the source code and discuss more on the API set exposed by the Framework. If you have any queries, do let me know.

Published by on under .Net | C#

Many time during app development, developers need to find out whether any Antivirus software is installed in client's operating system. In case it is installed, we may want to know the installed antivirus software name.

 

If you are looking for such code (using .NET/C#), you came to the right place. Here we are going to see the code to retrieve this information.

Published by on under .Net | C#

The .NET Framework is a software development framework developed by Microsoft which runs primarily on Windows operating systems. But these days, it is used by millions of developers to create apps and services on any device and operating systems with amazing performance.

 

In this post, I am going to bookmark most of the .NET redistributables for references in future. Bookmark this for your future references too.

Published by on under .Net | C#

If you are a developer and using C# .NET to build your application, you may need to access the Application Data (AppData) folder of all the user accounts currently created in a specific system. The .NET framework exposes API to detect only the logged-in user's AppData folder.

 

To get the path for all the users of the system, you have to find it from the Windows Registry. Today we will discuss on that topic with a piece of code. Continue reading.

Published by on under .Net | C#