Check hard drive space in ASP.Net using C# and VB.Net

Hi muhammad12,

Refer below sample.

Code

C#

protected void CheckSpace(object sender, EventArgs e)
{
    System.IO.DriveInfo dDrive = new System.IO.DriveInfo("E:\\");
    if (dDrive.IsReady)
    {
        double freeSpacePerc = (dDrive.AvailableFreeSpace / (float)dDrive.TotalSize) * 100;
        lblMessage.Text=string.Format("Free space: {0}<br/>Total space: {1}<br/>Percentage free space: {2:0.00}%.",
            dDrive.AvailableFreeSpace, dDrive.TotalSize, freeSpacePerc);
    }
}

VB.Net

Protected Sub CheckSpace(ByVal sender As Object, ByVal e As EventArgs)
    Dim dDrive As IO.DriveInfo = New IO.DriveInfo("E:\")
    If dDrive.IsReady Then
        Dim freeSpacePerc As Double = (dDrive.AvailableFreeSpace / CSng(dDrive.TotalSize)) * 100
        lblMessage.Text = String.Format("Free space: {0}<br/>Total space: {1}<br/>Percentage free space: {2:0.00}%.",
            dDrive.AvailableFreeSpace, dDrive.TotalSize, freeSpacePerc)
    End If
End Sub

Screenshot