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Programming

About Microsoft.NET, C#/VB/C++, WPF/WCF/WinForm/Silverlight, Windows Azure, SQL Server, Windows Phone, etc.

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dotnet core lite-log

Set AttachDbFilename as Relative Path in .NET Core

150 views   0 comments last modified about 3 months ago

.NET Framework, you can use |DataDirectory| to configure connection string when connecting to SQL Server database file via attach mode: AttachDbFilename=|DataDirectory|\dbname.mdf In .NET Core, you cannot directly set SQL Server Express connec...

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dotnet core lite-log

Instantiate a Service in ConfigureServices Method in .NET Core

31 views   0 comments last modified about 3 months ago

.NET Core is built in with dependency injection. Usually method ConfigureServices in Startup class is used to register services in the container. The signature of the method looks like the following: public void ConfigureServices(IServiceC...

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.net core lite-log

ASP.NET Core 2.1 Error - 'Cyrillic' is not a supported encoding name

143 views   0 comments last modified about 3 months ago

After upgrading to ASP.NET Core 2.1 (.NET Core SDK 2.1.301), you may encounter the following error about encoding: System.ArgumentException    HResult=0x80070057    Message='Cyrillic' is not a supported encoding name. For information on defining a custo...

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.net core entity-framework

SQLite in .NET Core with Entity Framework Core

91 views   0 comments last modified about 3 months ago

SQLite is a self-contained and embedded SQL database engine. In .NET Core, Entity Framework Core provides APIs to work with SQLite. This page provides sample code to create a SQLite database using package Microsoft.EntityFrameworkCore.Sqlite . Create sample project ...

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asp.net core 2 .net core

Graphics Programming and Image Processing in .NET Core 2.x

50 views   0 comments last modified about 3 months ago

In .NET Core 2.x, Windows Forms or WPF are not implemented since they are based on GDI+ and DirectX respectively in Windows. In .NET Core 3.0, there is plan to add Desktop Packs which includes UWP. WPF and Windows Forms. However, they will still be Windows-only. In .NET Core applications, you may...

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lite-log powershell

Script to Start Multiple Virtual Machines

154 views   0 comments last modified about 5 months ago

The following is a PowerShell code snippet to start multiple VMs through vmplayer.exe: # Navigate to the folder where vmplayer.exe file exists cd "D:\Program Files (x86)\VM Player" # Start the VMs by using vmplayer...

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dotnetcore bootstrap

ASP.NET Core 2 with Bootstrap 4 Bundler Minifier Issue: Expected semicolon or closing curly-brace found '-'

879 views   1 comments last modified about 9 months ago

Background When upgrading Bootstrap to v4.0.0 release, the bundler and minifier doesn’t work properly due to CSS variable is commonly used: :root{--blue:#007bff; About 26 errors will show up in the Error List with the following message: ...

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lite-log linux

Mount Windows Shared Folder in SUSE or other Linux VMware Guest

82 views   0 comments last modified about 6 months ago

This page summarizes the steps to mount a windows shared folder in a Linux VMware guest machine, i.e. SUSE. Setup shared folder In Virtual Machine Settings windows, add shared folder. ...

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lite-log powershell

Calculate Time Difference between Dates in PowerShell

254 views   0 comments last modified about 7 months ago

PowerShell provides a number of cmdlets to retrieve current date time and to create time span object. Calculate time difference - CmdLets $current = Get-Date $end= Get-Date $diff= New-TimeSpan -Start $current -End $end Write-Output "Time difference is: $di...

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dotnet core angular asp.net core 2

Issue - Unable to get property 'apply' of undefined or null reference occurred in Angular 4.*, VS2017 15.3, ASP.NET Core 2.0

7039 views   10 comments last modified about 2 years ago

Issue Context After installed Visual Studio 2017 15.3 preview and .net core 2.0 preview SDK, I upgraded one of my existing asp.net core project to 2.0. The project was created using ‘dotnet new angular’ SPA template.  I also upgraded all the client app packages to the latest. For exa...

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