Tag: ASP.NET

ASP.NET / C# / Coding / Linux

ASP.NET Core on Linux - Unable to load DLL libgdiplus - how to fix it How to fix the Unable to load DLL libgdiplus - gdiplus.dll not found in Linux error using ASP.NET Core and Linux

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Today I faced a minor issue while trying to publish my ASP.NET Core project on my Linux CentOS production machine. The error I got was the following:

ASP.NET Core on Linux - Unable to load DLL libgdiplus - how to fix it How to fix the Unable to load DLL libgdiplus - gdiplus.dll not found in Linux error using ASP.NET Core and Linux Read More
ASP.NET / C# / Coding

MergeTIFF - Free tool to merge multiple TIFF files into one A lightweight, open-source .NET Core console application to merge multiple TIFF files in a single multi-page TIFF file - source code available on GitHub

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In this post, we'll talk about MergeTIFF, a lightweight .NET Core console application that merges multiple TIFF files (including multi-page ones) into a single multi-page TIFF file. The full source …

MergeTIFF - Free tool to merge multiple TIFF files into one A lightweight, open-source .NET Core console application to merge multiple TIFF files in a single multi-page TIFF file - source code available on GitHub Read More
ASP.NET / C# / Coding / Design / Windows

Visual Studio - parameter instance with value null (and other design errors) when opening XSD files How to fix the "Value cannot be null. Parameter name: instance" error when opening XSD files in design mode with Visual Studio 2017 or 2019

- by Ryan - 4 Comments.

If you've stumbled upon this post it most likely means you're having issues while trying to open XSD files from Visual Studio 2017 or 2019. More specifically, this problem often …

Visual Studio - parameter instance with value null (and other design errors) when opening XSD files How to fix the "Value cannot be null. Parameter name: instance" error when opening XSD files in design mode with Visual Studio 2017 or 2019 Read More
ASP.NET / C# / Coding / Servers & Services / Web

ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION error in Chrome - How to fix How to address a nasty HTTP error that you could get in Google Chrome browser when you're handling files with commas in their filename

- by Ryan - 8 Comments.

Today we were called to fix a strange issue that was happening to one of our colleagues when trying to download a PDF file from one of our Document Management …

ERR_RESPONSE_HEADERS_MULTIPLE_CONTENT_DISPOSITION error in Chrome - How to fix How to address a nasty HTTP error that you could get in Google Chrome browser when you're handling files with commas in their filename Read More
Coding

ASP.NET C# DateTime helper functions to add, subtract, calculate and get Business Days A set of useful DateTime-based helper classes to skip holidays and add-subtract-calculate business days (including Easter, Easter monday and other country-specific holidays)

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Today I had to find a way to perform some rather "uncommon" DateTime-based operations: to be more specific, I needed to check if a date object resulting from a user …

ASP.NET C# DateTime helper functions to add, subtract, calculate and get Business Days A set of useful DateTime-based helper classes to skip holidays and add-subtract-calculate business days (including Easter, Easter monday and other country-specific holidays) Read More
ASP.NET / C# / Coding / Cyber Security / HTML & CSS / Servers & Services

ValidateTokens exception on ASP.NET MVC Login: how to fix How to overcome a ValidateTokens exception that could hinder your login phase in an ASP.NET MVC Web Application form with the Anti-Forgery token feature on

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Today I had to help one of my developers who was experiencing a strange issue in an ASP.NET MVC Application (based upon .NET Framework 4.8) he was debugging. The error …

ValidateTokens exception on ASP.NET MVC Login: how to fix How to overcome a ValidateTokens exception that could hinder your login phase in an ASP.NET MVC Web Application form with the Anti-Forgery token feature on Read More
ASP.NET / C# / Coding / Servers & Services

How to read, write, modify and delete Cookies in ASP.NET C# A brief tutorial illustrating how to manage Cookies in ASP.NET Web Forms, MVC and Core with examples of code in C Sharp language

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Dealing with Cookies has been a typical requirement of most web developers since the early days of the World Wide Web. In this article, after a brief introduction to explain …

How to read, write, modify and delete Cookies in ASP.NET C# A brief tutorial illustrating how to manage Cookies in ASP.NET Web Forms, MVC and Core with examples of code in C Sharp language Read More
ASP.NET / C# / Coding / Windows

ASP.NET - Create MSI or setup.exe installer for any .NET Project with WiX How you can use the open-source WiX toolset to create a MSI or Setup.exe installer package for your ASP.NET projects to ensure a smooth install experience to your users

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If you're an ASP.NET developer working with client applications using either Windows Forms (aka WinForms) projects, WPF Projects, Windows Console applications, Windows Service projects and/or any .NET Core Desktop App …

ASP.NET - Create MSI or setup.exe installer for any .NET Project with WiX How you can use the open-source WiX toolset to create a MSI or Setup.exe installer package for your ASP.NET projects to ensure a smooth install experience to your users Read More
ASP.NET / C# / Coding / Tools & Utilities

ASP.NET How to set the proper Data Type of MS Excel cells with EPPlus A short guide explaining how to properly format the data type for numeric and date cells and/or columns within a MS Excel Worksheet (XLSX file) using EPPlus

- by Ryan - 3 Comments.

If you've stumbled upon this post you most likely already know EPPlus, one of the best open-source libraries to programmatically read, create and edit MS Excel files in XLS and …

ASP.NET How to set the proper Data Type of MS Excel cells with EPPlus A short guide explaining how to properly format the data type for numeric and date cells and/or columns within a MS Excel Worksheet (XLSX file) using EPPlus Read More
ASP.NET / C# / Coding / Tools & Utilities

ASP.NET - How to format and style a Excel XLSX Worksheet with EPPlus A brief tutorial explaining how to apply styles and format rules to a Worksheet created with EPPlus: bold, colors, auto-filter, auto-fit and more!

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We already talked about EPPlus in this post, where we described it as one of the best open-source libraries to programmatically read, create and edit MS Excel files in XLS …

ASP.NET - How to format and style a Excel XLSX Worksheet with EPPlus A brief tutorial explaining how to apply styles and format rules to a Worksheet created with EPPlus: bold, colors, auto-filter, auto-fit and more! Read More