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For questions related to Sitecore item and field validation rules within the Sitecore Client

2 votes
Accepted

Item validator access already stored data instead of newly inputed data

Answer is "use fatal validation result instead of critical". Or use item:saving event like described in my answer. … Alternatively, you can use item:saving event instead of validation. Another way is using saveUI pipeline. …
Marek Musielak's user avatar
  • 24.2k
4 votes
Accepted

How to prevent an item from being moved to another folder accidentally?

There is nothing like that out of the box in Sitecore. But you can easily create such a functionality on your own: Create a new template with one field only - checkbox "Cannot be moved" Add your han …
Marek Musielak's user avatar
  • 24.2k
4 votes
Accepted

'IServiceProvider' does not contain a definition for 'GetService'

You need to add a reference Microsoft.Extensions.DependencyInjection.Abstractions.dll to your project. It's not enough to have Microsoft.Extensions.DependencyInjection.dll referenced only.
Marek Musielak's user avatar
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1 vote
Accepted

Regex validator on display name for hyphen(-) value

You can just join: date + only not hyphens pattern: ^(0[1-9]|[12][0-9]|3[01])[-/.](0[1-9]|1[012])[-/.]((19|20)[0-9][0-9])[^\-]+$ with only not hyphens pattern: (^[^\-]+$) using or | Final regex …
Marek Musielak's user avatar
  • 24.2k
0 votes
Accepted

Validate Date entered is in yyyy/mm/dd format in Sitecore Forms

You just need to reorder regex parts like that: {"regularExpression":"^((18|19|20)[0-9]{2}[/](0[13578]|1[02])[/]31)|((18|19|20)[0-9]{2}[/](01|0[3-9]|1[1-2])[/](29|30))|((18|19|20)[0-9]{2}[/](0[1-9]|1[ …
Marek Musielak's user avatar
  • 24.2k
4 votes
Accepted

Sitecore validation rule at field level in multi-list value selection range

You can pretty much reuse the first regex, just instead of saying that you need 0-5 guids, you should say that you need 0 or more groups of 2 guids: ^({[^}]+}[|]{[^}]+}[|]?)*$ So in fact you use re …
Marek Musielak's user avatar
  • 24.2k