Remove all NULL elements inside Generic List using C# and VB.Net

Hi Sarasalvi,

Refer below sample.

Code

C#

protected void Remove(object sender, EventArgs e)
{
    List<SamplingCS> returnlis = new List<SamplingCS>();
    returnlis.Add(new SamplingCS { customerid = null, Name = null, Country = null });
    returnlis.Add(new SamplingCS { customerid = null, Name = "Test", Country = "India" });
    // Check if all property in SamplingCS is null then remove.
    returnlis.RemoveAll(x => x.GetType()
                            .GetProperties()
                            .Select(p => p.GetValue(x, null))
                            .All(p => p == null));
}

public class SamplingCS
{
    public string customerid { get; set; }
    public string Name { get; set; }
    public string Country { get; set; }
}

VB.Net

Protected Sub Remove(ByVal sender As Object, ByVal e As EventArgs)
    Dim returnlis As List(Of SamplingCS) = New List(Of SamplingCS)()
    returnlis.Add(New SamplingCS With {
        .customerid = Nothing,
        .Name = Nothing,
        .Country = Nothing
    })
    returnlis.Add(New SamplingCS With {
        .customerid = Nothing,
        .Name = "Test",
        .Country = "India"
    })
    returnlis.RemoveAll(Function(x) x.GetType().GetProperties().Select(Function(p) p.GetValue(x, Nothing)).All(Function(p) p Is Nothing))
End Sub

Public Class SamplingCS
    Public Property customerid As String
    Public Property Name As String
    Public Property Country As String
End Class