Partial Views & ModelState.AddModelError

Question

the source of `LoginRegister` view is like this : ``` @Html.Partial("authentication/_login") @Html.Partial("authentication/_register") ``` and each child view has got a form with this syntax ``` @using (Html.BeginForm(**seperated-methods**, "Login")) { @Html.ValidationSummary(false) } ``` I send error(s) in postback whit this code ``` ModelState.AddModelError("", "**any-error-message**"); return View("authentication/LoginRegister", customized-data); ``` The point is , error message shows in both `partial views`.

Accepted Answer

You need to tell the ModelState to which property this error refer to:

```
ModelState.AddModelError("PropertyName", "**any-error-message**");
```

Now it will be only in the

```
@Html.ValidationMessageFor(m => m.PropertyName)
```

If you don't specify the property name, the error will be considered global and get shown in every `ValidationSummary`.

Partial Views & ModelState.AddModelError

Solution

Problem