Features: Conditions

Conditions can be declared with attributes and are evaluated at the client after each value change. Conditions can be used to control two things

• Enabled/Disabled State
• Control Visibility

Condition attributes are applied to the property whose associated control(s) should be affected by the condition. The condition can reference any other value(s) which should be evaluated for the conditional state change.

Simple Conditions

Simple Show/Hide Condition

Checking/unchecking will show or hide another control

[DisplayName("Boolean Value")]
[Description("Checking/unchecking will show or hide another control")]
public bool SimpleBoolValue { get; set; }

[DisplayName("Conditionally Visible Value")]
[Description("This is the description.")]
[VisibleCondition(nameof(SimpleBoolValue), SimpleCondition.IsTrue)]
public string DemoName1 { get; set; } = "GenericEdit Demo";

Simple Enable/Disable Condition

Checking/unchecking will enable or disable the control below

[DisplayName("Boolean Value")]
[Description("Checking/unchecking will enable or disable the control below")]
public bool SimpleBoolValue2 { get; set; }

[DisplayName("Conditionally Enabled Select")]
[Description("This is the description.")]
[EnabledCondition(nameof(SimpleBoolValue2), SimpleCondition.IsTrue)]
public VideoCodecTypes SimpleEnumSelect { get; set; }

Value Conditions

Show/Hide by Enum Value Selection

Selecting 'Don't know' will show a message

[DisplayName("Selecting 'Don't know' will show a message")]
[Description("This is the description.")]
public StayOrGo StayOrGoSelect { get; set; } = StayOrGo.Go;

[VisibleCondition(nameof(StayOrGoSelect), ValueCondition.IsEqual, StayOrGo.DontKnow)]
public LabelItem StayOrGoLabel { get; set; } = new LabelItem("IT'S TIME TO MAKE A DECISION!");

Referencing Nested Values

Show/Hide by Enum Value Selection

Values of child properties can be referenced using 'dot' notation like this:

[DisplayName("File Import 1")]
public ChildOptionExample ChildOption1 { get; set; } = new ChildOptionExample();

[DisplayName("File Import 2")]
[VisibleCondition(nameof(ChildOption1) + "." + nameof(ChildOptionExample.File), SimpleCondition.IsNotNullOrEmpty)]
public ChildOptionExample ChildOption2 { get; set; } = new ChildOptionExample();