Conditional Regex Validator Control

Custom Azure DevOps Work Item Form control that validates a target field against a regex pattern when a configurable condition is active.

Features

• Works as a custom control contribution (ms.vss-work-web.work-item-form-control).
• Conditional activation based on another field value.
• Regex-based validation for the target field.
• Optional required behavior when the condition is active.
• Clear status feedback in the UI:
  • Validation inactive
  • Required
  • Empty but allowed
  • Invalid regex configuration
  • Invalid
  • Valid

Configuration Inputs

• TargetFieldName (WorkItemField)
• ConditionFieldName (WorkItemField, optional)
• ConditionFieldValue (String)
• RegexPattern (String)
• ErrorMessage (String)
• IsRequiredWhenActive (Boolean)
• StatusFieldName (WorkItemField, optional)
• StatusFieldValue (String, optional)

Example

• TargetFieldName: Custom.ReleaseKey
• ConditionFieldName: Custom.SourceType
• ConditionFieldValue: External
• RegexPattern: ^\d+\.\d+\.\d+\.[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}$
• ErrorMessage: ReleaseKey must match number.number.number.guid when SourceType = External
• IsRequiredWhenActive: true

Installation

Install the extension in your Azure DevOps organization, then add the custom control to a Work Item Type layout in your inherited process.