ASP.Net: Restart counter from 1 using ViewState in C# and VB.Net

Refer below sample code.

HTML

<asp:Button Text="Increament counter" OnClick="IncreamentCounter" runat="server" />
Value: <asp:Label ID="lblCount" runat="server" />

Code

C#

protected void IncreamentCounter(object sender, EventArgs e)
{
    int counter;
    if (ViewState["Count"] != null)
    {
        counter = Convert.ToInt32(ViewState["Count"]);
    }
    else
    {
        counter = 0;
    }
    if (counter == 500)
    {
        counter = 1;
    }
    else
    {
        counter = counter + 1;
    }

    ViewState["Count"] = counter;
    this.lblCount.Text = counter.ToString();
}

VB.Net

Protected Sub IncreamentCounter(ByVal sender As Object, ByVal e As EventArgs)
    Dim counter As Integer
    If ViewState("Count") IsNot Nothing Then
        counter = Convert.ToInt32(ViewState("Count"))
    Else
        counter = 0
    End If
    If counter = 500 Then
        counter = 1
    Else
        counter = counter + 1
    End If
    ViewState("Count") = counter
    Me.lblCount.Text = counter.ToString()
End Sub

Screenshot