ERROR : MSDYN365BC - Publish Extension Error - NetFx40_LegacySecurityPolicy is enabled and must be turned off.

How to publish App in Business Central without PowerShell ?

While publishing the app I was getting 2 issues :-

Issue 1 :

It was not getting updated and nothing was happening in Output Window. I had installed it via 

PowerShell and it was working for me fine. But there was a problem we need to install several 

versions of same APP. And it was a very lengthy process.

Issue 2 :

While publishing it was giving me error 

MSDYN365BC - Publish Extension Error - NetFx40_LegacySecurityPolicy is enabled and must be turned off.

Solution:

Step 1 :

Go to this file in Service Folder as Shown in Screenshot. (Remember you need to run your system as administrator)

Step 2. Open File in Notepad and find Runtime and make the property to false as shown.

Step 3. Now Restart your NAV Service and Come to visual studio code in your project.

Press F5 or goto View -> Command Pallete -> AL:Publish

Your extension must be published.

If still its not publishing you can comment below.

What is the TempBlob table and why should we use it?

TempBlob  Record Table in Detail

To help you as a developer when writing code to manage import and export of files, you can use the table TempBlob (99008535).

The TempBlob table contains the following fields:

• Primary Key (integer)
• Blob (BLOB)

The TempBlob table contains the following functions:

• WriteAsText
• ReadAsText
• ReadAsTextWithCRLFLineSeparator
• StartReadingTextLines
• StartWritingTextLines
• MoreTextLines
• ReadTextLine
• WriteTextLine
• ToBase64String
• FromBase64String
• GetHTMLImgSrc
• GetImageType
• GetXMLAsText

You should use this table as a temporary table, by setting the Temporary property on the record variable. This makes sure that changes made to the temporary table are not stored in the database. Examples of how to use the TempBlob table are available in codeunit 419 File Management.

How to define List in AL using visual studio code?

List

The List data type can be compared with an array. The List can only be used with fundamental types and represents a strongly type list of values that can be accessed by index. So, you can have a List of [Integer], but you cannot have List of [Blob]. A List doesn’t require you to define upfront how many elements you would like to store. A List doesn’t support multi-dimensions as well. This List data type is using the System.Collections.Generic.List<T> Class from the .NET Framework, and this enables you to use some built-in methods.

Before we discuss the methods available on a List, let’s first see how to create a new variable of type List.

The data type List has some methods that are used a lot.

List Functions

When you work with the List data type, there are a number of functions you can apply on that data type. These functions can be used to add items to and remove items from a list, determine the length of the list, find a certain item in the list, etc.

• ADD(X)
• CONTAINS(X)
• GET(index)
• SET(index, X)
• INSERT(index, X)
• Remove(X)
• RemoveAt(index)
• Count
• AddRange(X, [X], [X], …)
• GetRange(index, count, List of [X])
• RemoveRange(index, count)
• IndexOf(X)
• LastIndexOf(X)
• Reverse

ADD(X)

The ADD(X) function adds an item X to the end of the list.

CONTAINS(X)

The CONTAINS(X) function checks if an item X exists in the list. It returns a Boolean value, true if found, false if not found.

GET(index)

The GET(index) function gets an item from the list by a certain index and returns that item.

SET(index, X)

The SET(index, X) function updates an item in the list by a certain index. It sets the value X on the item at a certain index.

INSERT(index, X)

The INSERT(index, X) function inserts an item in the list, on a certain index. All the next items are moved one index further.

REMOVE(X)

The REMOVE(X) function removes the first occurrence of an item in the list based on the value of X. This function returns a Boolean value.

REMOVEAT(index)

The REMOVEAT(index) function removes the item on a certain index. This function returns a Boolean value.

COUNT

The COUNT(index) function returns the number of items in a list.

ADDRANGE(X [,X] [,X] [, …])

The ADDRANGE(X) function adds multiple items to the list at the same time.

GETRANGE(index, count)

The GETRANGE(index, count) function retrieves a number of items (count), starting on a certain index. The result is a List of [X].

REMOVERANGE(index, count)

The REMOVERANGE(index, count) function removes a multiple items (count), starting on a certain index. This function returns a Boolean value.

INDEXOF(X)

The INDEXOF(X) function returns the index of the first occurrence of an item based on the value of X.

LASTINDEXOF(X)

The LASTINDEXOF(X) function returns the last index of an item based on the value of X.

REVERSE

The REVERSE function reverses the order of the elements in the list.

How to Start customising AL Extension for Dynamics 365 business central?

Dear Readers ,

This post is related with my AL development. Lets start to dive in Business Central to get a real idea.

Step 1. Open Visual Studio Code and Goto View-Command Pallette.

1. Select AL:GO
2. Type the project Name : Social Media
3. Change the Launch.json  file as shown in screen if you are using windows Authentication.

4. Download the Symbol from View and Command Pallete by typing AL:Download Symbol

5.Once your Symbols are downloaded you can start with real development.

6. Delete Hello World.AL file and create 1 folder with name  Tables to put all tables and create 1 file in it with name SocialMediaExtension.al as shown in screen.

How to Extend existing tables via AL Code in Visual Studio?

1. Type ttable to use code snippet. And change the file as shown in screenshot.

2. Create one more folder Page and Add one more file for SocialMediaCard.al Pages. Publish the Extension to view your ready Extension. If you need some guidance to Publish the extension you can follow my last point of blog LINK.

3. After the Publish you can check your Extension Management Page.

4. Install the Extension and check your Customer Card PAge with new fields where you can enter records for your cutomers.

I hope this blog will help to understand AL Extension and coding link with your projects.