Class ValidationHelper

Augments tags with bootstrap validation classes and messages if validation failed for the model field identified by the expression in the attribute bs-validation-for.

For controls (input, textarea and select tags), the form-control and form-control-danger classes are added.

If the tag has a form-group class set, the has-danger class is added. Otherwise, the form-control-feedback class is added and the tag content is set to the corresponding validation error message.

Inheritance

Microsoft.AspNetCore.Razor.TagHelpers.TagHelper

ValidationHelper

Namespace: XploRe.AspNetCore.Mvc.TagHelpers.Bootstrap4

Assembly: XploRe.AspNetCore.Mvc.TagHelpers.Bootstrap4.dll

Syntax

public class ValidationHelper : TagHelper

Constructors

Name	Description
ValidationHelper(IHtmlGenerator)	Initialises a new ValidationHelper instance.

Properties

Name	Description
For	Name to be validated on the current model. If not specified, no action is performed.
Generator	The cached Microsoft.AspNetCore.Mvc.ViewFeatures.IHtmlGenerator service instance.
ViewContext	The automatically assigned ViewContext instance.

Methods

Name	Description
ProcessAsync(TagHelperContext, TagHelperOutput)