Conditional fields

You can hide or display fields depending on the value of a related property.

You do this by using the ConditionalVisibilityAttribute in the following way:

[ConditionalVisibilityAttribute("{\"conditions\":[{\"fieldName\":\"Title\",\"operator\":\"Equals\",\"value\":\"My custom title\"}]}")]
public bool MyProperty { get; set; }

This sample adds a rule that displays field MyProperty, only if the Title property is equals to My custom title.

The ConditionalVisibilityAttribute takes a parameter that is defined in the following JSON:

{
 "operator": "RuleOperator",
 "skipValidation": "boolean",
 "conditions": "RuleCondition[]",

 "RuleOperator": {
   "Or": "Or",
   "And": "And"
 },

 "RuleCondition": {
   "fieldName": "string",
   "operator": "RuleConditionOperator",
   "value": "string"
 },

 "RuleConditionOperator": {
   "Equals": "Equals",
   "NotEquals": "NotEquals",
   "Contains": "Contains",
   "NotContains": "NotContains"
 }
}

In the sample above, you can define the following:

• RuleOperator
  It supports two values - AND and OR that are applied for the conditions.
• skipValidation
  It skips the validation on the client and server-side for that property.
• RuleCondition
  Is an array of complex objects holding the way that the field bases its show/hide logic