If you want to check the property value or string which is Null or not using the following code in vb .Net.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) Handles Me.Load
Dim cust As New Customer()
cust.firstname = "Rasik"
If Not String.IsNullOrEmpty(cust.firstname.ToString()) Then
' yourcode here
Else
' yourcode here
End If
End Sub
The above example clears how to use IsNullOrEmpty, which will return true or false. It indicates whether the property value or string is empty or null.
Post your comments / questions
Recent Article
- ValueError:All arrays must be of the same length - Python
- Check hostname requires server hostname - SOLVED
- How to restrict access to the page Access only for logged user in Django
- Migration admin.0001_initial is applied before its dependency admin.0001_initial on database default
- Add or change a related_name argument to the definition for 'auth.User.groups' or 'DriverUser.groups'. -Django ERROR
- Addition of two numbers in django python
- The request was aborted: Could not create SSL/TLS secure channel -Error in Asp.net
- FieldError: Cannot resolve keyword 'id' into field in Django project
Related Article