TreeListColumnBuilder<T>.ValidationRules(Action<ValidationRulesFactory>) Method

Specifies validation rules to be checked when cell values are updated. Mirrors the client-side validationRules object.

Namespace: DevExtreme.AspNet.Mvc.Builders

Assembly: DevExtreme.AspNet.Core.dll

Declaration

public TreeListColumnBuilder<T> ValidationRules(
    Action<ValidationRulesFactory> configurator
)

Parameters

Name	Type	Description
configurator	Action<ValidationRulesFactory>	A function that allows you to specify nested options.

Returns

Type	Description
TreeListColumnBuilder<T>	A reference to this instance after the method is called.

Remarks

This method provides access to methods that allow you to configure nested options of the client-side validationRules object.

To specify nested options, use a lambda expression.

Razor C#

@(Html.DevExtreme().TreeList()
    .Columns(columns => {
        columns.Add().ValidationRules(rules => rules
            // call methods to specify nested options
        );
    })
)

Refer to Validate Editors Used in Composite Controls for more information.