DataSourceInfo is invalid

[AzureLearner]

I am facing same error for MaxLength . I have changed it to - DataSourceInfo([@Table1],MaxLength,"Id") , still I can see same error. Is there any other way to fix it?

[RezaDorrani · Accepted solution]

Hi @AzureLearner 

The 3rd param is the column name

DataSourceInfo function intellicense will let you pick specific column names

Not all column types work

Regards,

Reza Dorrani

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly

[v-yutliu-msft · Accepted solution]

Hi @AzureLearner ,

The right syntax of DataSourceInfo function is :

DataSourceInfo( DataSource, Information, ColumnName )

The information shoule be the format like this:

DataSourceInfo.DisplayName

DataSourceInfo.MaxLength

DataSourceInfo.MaxValue

So, try this formula:

DataSourceInfo([@Table1],DataSourceInfo.MaxLength,"Id")

Here's a doc about this function for your reference:

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

[AzureLearner]

@RezaDorrani @v-yutliu-msft :Thanks a lot!

---

---

[robertb]

Workaround hack for the DataSourceInfo-always-true bug.

1. Create a new Sharepoint list with 1 row

2. Grant read permission only to the group you want to test

3. Add a hidden Gallery control to your PowerApp that refers to your new list

4. The Gallery will only load rows if the user has that permission, so use CountRows to test this.

Robert.

[priyeshwagh777]

Hi, I assume MaxLength doesn't work well with CDS data source?