@Html. Use of ValidationSummary ()

@Html. ValidationSummary () Returns the result of the form being validated in the background.

Such as

When the background if (Modelstate.isvalid) fails, the error message is displayed to the @Html. ValidationSummary (),

The current background verification is passed, but some logic verification does not pass, such as with a named password wrong, you can manually add error messages,
Modelstate.addmodelerror (",", "The current password was incorrect or the new password is invalid."); This will also show up in @html.validationsummary ()

@Html. ValidationSummary () can carry a bool type parameter, TRUE or FALSE.

For example, @Html. ValidationSummary (True), true means that only error messages at the model level, such as data Model validation errors, are displayed.

If False, it means that all information is displayed, the information is displayed in the order, the property is wrong, and the model error is behind.

@Html. Use of ValidationSummary ()