MVCxBatchUpdateValues<T, S>.IsValid(T) Method

Gets a value that indicates whether an item from the underlying data source is valid.

Namespace: DevExpress.Web.Mvc

Assembly: DevExpress.Web.Mvc5.v23.2.dll

NuGet Package: DevExpress.Web.Mvc5

Declaration

C#

public bool IsValid(
    T item
)

VB.NET

Public Function IsValid(
    item As T
) As Boolean

Parameters

Name	Type	Description
item	T	The item from the underlying data source.

Returns

Type	Description
Boolean	true if the item is valid; otherwise, false.

Remarks

The IsValid property allows you to indicate and handle errors for columns that are not visible in the UI.

C#

if (batchValues.IsValid(person))
    PersonsList.UpdatePerson(person);
else {
    var oldObj = PersonsList.GetPersons().FirstOrDefault(p => p.PersonID == person.PersonID);
    if (batchValues.EditorErrors[person]["LastName"].Errors.Count > 0 && batchValues.EditorErrors[person]["MiddleName"].Errors.Count > 0) {
        person.LastName = oldObj.LastName;
        person.MiddleName = oldObj.MiddleName;
        PersonsList.UpdatePerson(person);
    } else
        batchValues.SetErrorText(person, "Correct validation errors");
}