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
- 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
- How to hide the ID field from the Django admin?
- It is impossible to add a non nullable field without specifying a default. Django error
- ImportError: cannot import name 'url' from 'django.conf.urls' - Django Error
- How to Enable Virtualization in BIOS Security Settings in Intel Processors For Android Studio?
- Dependency 'androidx.activity:activity:1.8.0' requires libraries and applications that depend on it.
- AttributeError: 'NoneType' object has no attribute 'get_text' - Python
Related Article