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Validate nested sub-properties #13986

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merged 8 commits into from Sep 4, 2019
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Validate nested sub-properties #13986

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34f466b
Validate nested sub-properties
pranavkm Aug 23, 2019
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guardrex Aug 23, 2019
404a421
Update forms-validation.md
pranavkm Aug 23, 2019
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Make classes public to match the other examples
guardrex Aug 23, 2019
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Update forms-validation.md
pranavkm Aug 27, 2019
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guardrex Aug 31, 2019
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guardrex Aug 31, 2019
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guardrex Aug 31, 2019
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6 changes: 5 additions & 1 deletion aspnetcore/blazor/forms-validation.md
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Expand Up @@ -5,7 +5,7 @@ description: Learn how to use forms and field validation scenarios in Blazor.
monikerRange: '>= aspnetcore-3.0'
ms.author: riande
ms.custom: mvc
ms.date: 08/13/2019
ms.date: 08/31/2019
uid: blazor/forms-validation
---
# ASP.NET Core Blazor forms and validation
Expand Down Expand Up @@ -180,3 +180,7 @@ The `ValidationMessage` component displays validation messages for a specific fi
```

The `ValidationMessage` and `ValidationSummary` components support arbitrary attributes. Any attribute that doesn't match a component parameter is added to the generated `<div>` or `<ul>` element.

### Validation of complex or collection type properties

Validation attributes applied to the properties of a model validate when the form is submitted. However, the properties of collections or complex data types of a model aren't validated on form submission. To honor the nested validation attributes in this scenario, use a custom validation component. For an example, see the [Blazor Validation sample in the aspnet/samples GitHub repository](https://github.com/aspnet/samples/tree/master/samples/aspnetcore/blazor/Validation).