While developing Angular applications in Visual Studio 2019 & Visual Studio Code following compile time error is shown:

TS1219 Experimental support for decorators is a feature that is subject to change in a future release. Specify ‘–experimentalDecorators’ to remove this warning.

Visual Studio Fix:

I am using Visual Studio 2019 and fixed the issue in it, it might work in other versions as well.

Add the following lines in .csproj file:

  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
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Microsoft Office 365 will no more support to connect using TLS1.0 and TLS1.1, please read it here.

All the browser-server or client-server applications must use TLS1.2 or later to be able communicate with Office 365 services.

Here is how we can implement it in C# to connect using TLS1.2, put the following line of code either in the constructor of the class which you are using to communicate with the Office 365 services or in the method directly:

System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;          

As more and more service providers like PayPal and others or switching to support TLS1.2 only, you can put above line of code before calling any web service or API which supports TLS1.2 only.

If your service provider supports more than one security protocol you can mention it like below:

System.Net.ServicePointManager.SecurityProtocol
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More and more companies are using cloud infrastructure to host their applications and databases. In this article we will discuss the high level steps to move on-premises SQL Server database to Azure SQL database using Microsoft SQL Server Management Studio:

  1. Download and install the latest version of Microsoft SQL Server Management Studio, old version

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ASP.NET SignalR is a library for ASP.NET developers that simplifies the process of adding real-time web functionality to applications. Real-time web functionality is the ability to have server code push content to connected clients instantly as it becomes available, rather than having the server wait for a client to request new data – Microsoft

Normally server sends notifications to clients when communication is initiated by some client but there are situations when we want server to push data to clients even there is no request from any clients.
Here is step by step procedure to do so.

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Step 1
Add hub class, right click (on the App_Code in case of website project or appropriate folder in case of web application project), select Add and then Add New Item. Select the SignalR Hub Class template, give it a name say BroadcasterHub and click Add.
Your class should look like below:

using System;
using System.Collections.Generic;
using System.Linq;
using
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Sometime we need to do undo checkout from other user’s workspace in Team Foundation Server (TFS). Here is the procedure to do it using Visual Studio’s Command Prompt.
Open the Visual Studio Command Prompt and type the following command:

tf undo /workspace:"WorkspaceName;WorkspaceOwnerName" $/Project/SomeFile.aspx 

Replace the workspace and workspace owner’s name and also path of the file to undo checkout.

You must have “Undo other users’ changes” permission to perform this. When you will execute this command it might prompt for your TFS credentials (if those were not saved/remembered).

Tip: You can use the above command to undo checkout a file from your own workspace.

Tip: To get the workspace and owner names and file path, try to check out the same file in Visual Studio it will provide this information in output window, copy from there and replace in the above command and execute it.

Tip: You can undo check out all the files in project or specific directory by add /recursive parameter in the command, please see the example below:
Example 1


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Recently we were in a situation where we need to merge data from our offline version of application with online database.
We planned to use uniqueidentifier as data type for ID columns instead of int (auto identity).

But when we looked at reviews a lot of people were against this idea, they said if we use uniqueidentifier column as primary key (and clustered index) then there will be lot of fragmentation in our database, also the extra size of key.

Some people suggested that use the int type (auto identity) as primary key and add another column of uniqueidentifier type for this purpose. We decided to go with this idea and added a uniqueidentifier column in each table.

We don’t see any issue in this design right now and hopefully it will work for long term.

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Hosting providers unload your application after certain amount of time if the application is idle. Microsoft Azure provide Always ON option (with some extra cost) to keep the application always running. You can enable these settings from Azure Portal as show below:

However there is an issue if your application is running on HTTPS and you have rewrite rules to redirect HTTP traffic to HTTPS then Always ON settings in Azure will not work.

You can fix it in many ways, here is one of them. Add the following rewrite rule in your web.config, it should be first rule (if you have other rules in web.config):

<system.webServer>   
    <rewrite>
      <rules>
        <rule name="Top Rules" enabled="true" stopProcessing="true">
          <!-- Please always keep this rule on the top of list -->
          <match url=".*" />
          <conditions logicalGrouping="MatchAny">
            <add input="{HTTP_USER_AGENT}" pattern="Initialization" ignoreCase="true"/>
            <add input="{HTTP_USER_AGENT}" pattern="AppInit" 		ignoreCase="true" />
            <add input="{HTTP_USER_AGENT}" pattern="WarmUp" 		ignoreCase="true"/>
            <add input="{HTTP_USER_AGENT}" pattern="AlwaysOn" 		ignoreCase="true"/>
          </conditions>
          <action type="Rewrite" url="{URL}" />
        </rule>
 
      </rules>
    </rewrite>
  </system.webServer>

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