RequiredAttribute.IsValid(Object) Method
Definition
Important
Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.
Checks that the value of the required data field is not empty.
public:
override bool IsValid(System::Object ^ value);
public override bool IsValid (object value);
public override bool IsValid (object? value);
override this.IsValid : obj -> bool
Public Overrides Function IsValid (value As Object) As Boolean
Parameters
- value
- Object
The data field value to validate.
Returns
true
if validation is successful; otherwise, false
.
Exceptions
The data field value was null
.
Remarks
If the value is an empty string, the method returns false
and a validation error is displayed.
Applies to
意見反應
https://aka.ms/ContentUserFeedback。
即將登場:在 2024 年,我們將逐步淘汰 GitHub 問題作為內容的意見反應機制,並將它取代為新的意見反應系統。 如需詳細資訊,請參閱:提交並檢視相關的意見反應