PowerApps – Nishant Rana's Weblog

Using DataSourceInfo and RecordInfo function for checking permissions for a Dataverse table or record in Canvas App

DataSourceInfo function can be used to check the Table / Entity level permission.

We can check for Create, Read, Edit, and Delete Permission and can disable, hide and show the corresponding create, edit and delete buttons for the users.

DataSourceInfo.CreatePermission
DataSourceInfo. DeletePermission
DataSourceInfo. EditPermission
DataSourceInfo. ReadPermission

DataSourceInfo function can also be used to obtain information about a particular column of the data source like Display Name, Max Length, Max Value, Min Length, Required.

https://www.inogic.com/blog/2020/11/how-to-use-datasourceinfo-in-canvas-app/

DataSourceInfo.DisplayName
DataSourceInfo.MaxLength
DataSourceInfo.MaxValue
DataSourceInfo.MinValue
DataSourceInfo.Required

Similarly, the RecordInfo function can be used to get the information about the record of a Dataverse data source.

We can check for the Read, Edit, and Delete Permission.

RecordInfo. ReadPermission
RecordInfo. EditPermission
RecordInfo.DeletePermission

Hide Show control based on Security Role in Canvas App

Here for our sample Canvas App we have a button and a Gallery having Data source as Cases

1	Visible	Button	If(DataSourceInfo(Cases,DataSourceInfo.ReadPermission), true, false)
2	Visible	Edit	If(RecordInfo(Gallery1.Selected, RecordInfo.EditPermission),true, false)
3	Visible	Delete	If(RecordInfo(Gallery1.Selected, RecordInfo.DeletePermission),true, false)

Now to test it, we have assigned the below custom security role/rights to another user – Test User 1 (along with Basic User security role)

i.e. Read, Write and Delete permission at the User Level on Case.

We have also shared the Average order shipment time record with Test User 1 assigning him the Write Permission.

Now when Test User 1 will open the Canvas App, the first button will be visible as he has the Read permission on the Case table.

In the gallery only the one record shared will be visible along with the Edit button on the same.

Let us just share one more case record with only Read permission to Test User 1.

We can see the record displayed for Test User 1.

It shows the Edit button for the new record, although we shared the record with the Read permission.

We have the following formula for the Edit button’s OnSelect

Patch(Cases, LookUp(Cases,’Case Number’ = lblCaseNumber.Text), {‘Case Title’:”Sample Title”})

So clicking on Edit for the new record shared ‘Complete overhaul required‘ gives the below Permission error

Now pressing the same edit button for the ‘Average order shipment time’ record will update the record (set title as Sample Title) as it was shared with Write permission with Test User 1.

Get all the details here –

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-datasourceinfo

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-recordinfo

Hope it helps..

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Use TemplateFill property to highlight selected item in Gallery – Canvas App

To highlight the selected item inside a gallery control, we can use its TemplateFill property.

The default value is

RGBA(0,0,0,0)

Change it to

If(ThisItem.IsSelected,RGBA(114, 189, 125, 1))

The result à

Pick color from – https://rgbacolorpicker.com/

Hope it helps..

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Updated Solution Explorer (Preview) experience in Dynamics 365

Microsoft recently announced the public preview of the new solution explorer which will eventually be the default experience going forward.

Earlier we could access it by visiting the – https://make.preview.powerapps.com/

In the new experience, we can Enable / Disable the new Solution Explorer by toggling the Solution preview on

The is how the existing solution experience looks like – here we have opened the Default solution.

With the new experience, the solution selected opens up and takes the whole page, with the new left navigation added.

Also, it adds a new Tree style of navigation for Objects.

+New button experience has been updated.

Left is the old experience listing each component and new experience in the right with the options grouped.

The overview section gives the details of the solution like display name, name, package type, etc. with the option to edit the details.

The option to run the Solution Checker.
Manage Search Index.
Recent activities performed.

The history page gives the details of the operations performed on the solution.

If we still need we can switch to classic

Performance improvements through parallel loading (Tree View) and caching (Solution objects, authentication while switching to classic, etc.

Get all the details here

https://powerapps.microsoft.com/en-us/blog/managing-solutions-has-a-new-look-public-preview/

Hope it helps..

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Remote Server returned ‘550 5.7.708 Service unavailable. Access denied, traffic not accepted from this IP – using Send Email with Option in Power Automate

While trying to send an email using Send an email with options action in Power Automate to my email id from a trial account, got the access denied error message.

Check out the wonderful post on sending Approval Emails to external users

https://debajmecrm.com/approvals-with-external-users-in-power-automate-without-consuming-power-automate-flow-license/

The error message –

The cause of this issue was because we were using the trial tenant.

https://docs.microsoft.com/en-us/exchange/mail-flow-best-practices/non-delivery-reports-in-exchange-online/fix-error-code-5-7-700-through-5-7-750#57708-access-denied-traffic-not-accepted-from-this-ip

Seems like the resolution is to contact support for an exception till we purchase the license.

Check the below post –

https://blog.thenetw.org/2019/10/31/remote-server-returned-550-5-7-708-service-unavailable-access-denied-traffic-not-accepted-from-this-ip/

Hope it helps..

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Using File and Image Data Type in Dataverse (Dynamics 365)

File Data Type was introduced somewhere around late 2019. At that time, it was only available for Canvas App and Power Automate / Flow, and with subsequent updates, it was then added for Model Driven App as well.

https://powerapps.microsoft.com/en-us/blog/introducing-improvements-to-data-storage-in-common-data-services/

The File Data type while creating the column à

By default, the file size is 32,768 KB.

Min – 1 KB
Maximum – 131072 KB

Let us keep it as 2000 KB and save it.

Here we have added the field in the form.

We need to save the record before the field is enabled.

On trying to upload a file more than 2000 KB size, the max size, we specified while creating the column, will give the below error.

“The upload failed for File Column 1. Please try again or contact your admin.”

The Maximum file size property cannot be updated after the column is created.

Similarly, we have the Image data type.

The default size is 10240 KB.

Min – 1 KB
Max – 30720 KB

If the image size is more than specified, we will get the below error message

The upload failed for Image Column 2. Please try again or contact your admin.

Below we have added a new file type column named File Column 2 with a maximum size of 100 MB.

With 2020 Release Wave 2, there is no need to specify file chunking while uploading a file of 16 MB or more, by dividing file data blocks of 4 MB or less through API.

https://docs.microsoft.com/en-gb/power-platform-release-plan/2020wave2/data-platform/improvements-microsoft-dataverse-file-image-upload-download

Earlier à

https://docs.microsoft.com/en-us/powerapps/developer/data-platform/file-attributes#retrieve-file-data

Below is the sample code we have used to upload a file of size 86 MB.

The file uploaded à

Now let us look at downloading part.

The URL that can be used are

Byte Array formatà
https://%5Borganization%5D/api/data/v9.1/entitySetName(entityID)/fileTypeAttributeName/$value?size=full

Base64 String formatà

https://[organization]/api/data/v9.1/entitySetName(entityID)/fileTypeAttributeName/?size=full

Let us try the URL in the browser for both below File column 1 and 2.

https://pmaurya105.crm.dynamics.com/api/data/v9.1/crad3_sampletables(2d15b66a-a8b4-eb11-8236-000d3a1d5bf4)/crad3_filecolumn1/$value?size=full

It downloads the file for File Column 1à

In case of File Column 2, we get the below error message as its size exceeds 16 MB à

{“error”:{“code”:”0x80090001″,”message”:”Maximum file size supported for download is [16] MB. File of [84 MB] size may only be downloaded using staged chunk download.”}}

Base 64 Format ->

Below is the sample C# code to download the file if the size is less than 16 MB

If it is more than 16 MB we will get the below error à Request Entity Too Large

For Image Data Type, for uploading the full image > 16 MB (without dividing into a smaller chunk of less than 4 MB), we can use the below source code. It is the same as for the file data type.

For download, we can download either the thumbnail or full image (<= 16 MB) using the same source code used for file download.

For thumbnail –

GET [Organization URI]/api/data/v9.1/entity(recordGuid)/myentityimage/$value

For full image –

GET [Organization URI]/api/data/v9.1/entity(recordGuid)/myentityimage/$value?size=full

For more than 16 MB we need to use chunking.

Get all the details below à

https://jukkaniiranen.com/2019/12/why-would-you-store-images-and-files-in-cds/

https://debajmecrm.com/new-data-type-filein-cds-all-you-may-need-to-know-about-it/

https://debajmecrm.com/retrieve-contents-of-file-data-type-field-in-dynamics-365-cds-using-javascript-client-code/

Hope it helps..

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Canvas App – Quick Reference

Recently we were working on Canvas Apps so thought of listing down some of the key points for quick reference

Use Items property for defining values for Drop Down and Combo Box.

Items = [“Branch”,”Country”]

Use DefaultSelectedItems for Setting Default values for Combo Box.

DefaultSelectedItems = [“Branch”]

To disable multiple selections for Combo Box set SelectMutiple as false

SelectMultiple = false

Change Data Source of Gallery based on Combo Box selected value

Items = If(ComboBox1.Selected.Value = “Branch”, Branches, Countries)

Filter Gallery’s data based on Text Box (string search)

Items = If(ComboBox1.Selected.Value = “Branch”,Filter(Branches,searchInput.Text in cre9d_value ||searchInput.Text in cre9d_name), Filter(Countries,searchInput.Text in cre9d_value ||searchInput.Text in cre9d_name))

Filter à

Search à

Unlock the Data Card field within the form to make changes to its properties

Use Navigate to move to a different Screen on OnSelect of Button

Navigate(Screen2, ScreenTransition.Fade)

The first item of the Gallery acts as a template

Use TemplateFill property to highlight the selected item in the Gallery.

TemplateFill = If(ThisItem.IsSelected,RGBA(233,150,150,10))

Use Sort to sort the Data Source for Items property

Items = Sort(Requests,’Created On’,Descending)

Fetch User’s Security Role and hide and show control based on it.

If(LookUp([@’Security Roles’], Name = “Maker”, Role) in Concat(LookUp([@Users], ‘Primary Email’ = User().Email).’Security Roles (systemuserroles_association)’, Role & “;”), true, false)

Submit, Reset, and New Form on saving a record on OnSelect of Button

SubmitForm(frmRequest);

ResetForm(frmRequest);

NewForm(frmRequest);

DataField is the most important property of the DataCard, which binds the control to the field in the Data Source.

The default value of the DataCard.

ThisItem is how we interact with the current record.

On SubmitForm – the form control reads the value of DataField property of all the cards to find the field to change and the value of each card from the Update property.

Clear Button and Enable Spell Check option for Text Input

checks for the spelling as well provide the option to clear the text box as shown below.

Contextual and Global Variable

Update / Set a Contextual Variable (referenced on the screen where they are created)

UpdateContext({varCount: 1, varActive: true, varName: User().FullName})

Set a global variable (available across the app)

Set(varCount, 1);Set(varActive, true);Set(varName, User().FullName)

With UpdateContext we can declare more than one variable at a time, which is not possible with global variable.
Use GUID function à

To generate a new GUID use GUID()

To convert a string to GUID(“0f8fad5b-d9cb-469f-a165-70867728950e”)

To set a variable null – Set(myNullVar, Blank())
GroupBy function – returns a table with records grouped together based on the values in one or more columns.

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/functions/function-groupby

GroupBy( Table, ColumnName1 [, ColumnName2, … ], GroupColumnName )