Check storage balance in Kilobytes (KB) using C# and VB.Net in ASP.Net

Hi nauna,

Check this example. Now please take its reference and correct your code.

HTML

Allowed(GB):<asp:TextBox runat="server" ID="txtAllowed" /><br />
Consumed(KB):<asp:TextBox runat="server" ID="txtConsumed" /><br />
<asp:Button Text="Calculate" runat="server" OnClick="OnCalculate" /><br />
<asp:Label ID="lblBalance" runat="server" />

Code

C#

protected void OnCalculate(object sender, EventArgs e)
{
    double allowed = Convert.ToDouble(txtAllowed.Text.Trim());
    double consumed = Convert.ToDouble(txtConsumed.Text.Trim());
    double allowedKB = allowed * 1024 * 1024;
    double remaining = allowedKB - consumed;
    lblBalance.Text = "Remaining " + Math.Round(remaining, 3) +
        " KB.<br />Remaining " + Math.Round((remaining / 1024 / 1024), 3) + " GB.";
}

VB.Net

Protected Sub OnCalculate(ByVal sender As Object, ByVal e As EventArgs)
    Dim allowed As Double = Convert.ToDouble(txtAllowed.Text.Trim())
    Dim consumed As Double = Convert.ToDouble(txtConsumed.Text.Trim())
    Dim allowedKB As Double = allowed * 1024 * 1024
    Dim remaining As Double = allowedKB - consumed
    lblBalance.Text = "Remaining " & Math.Round(remaining, 3) &
            " KB.<br />Remaining " & Math.Round((remaining / 1024 / 1024), 3) & " GB."
End Sub

Screenshot