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DataSourceInfo is invalid

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Posted on by 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?

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Building Power Apps

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RezaDorrani 12,143 on at

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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

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v-yutliu-msft on at

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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

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AzureLearner 15 on at

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

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robertb 4 on at

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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.

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Priyesh 62 on at

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

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