protected void ButtonClick(object sender, EventArgs e)
        {
            this.HideLabels();
            var isstaticip = DDStaticIP.SelectedItem.Text;
            var hostname = txtHostname.Text.Trim();
            var Ipaddress = txtIpaddress.Text.Trim();

            // DNS installation validation
            if (isstaticip == "--SELECT--")
            {
                this.ShowErrorMessage("Please confirm if server has static IP Address");
                return;
            }

            if (isstaticip == "False")
            {
                this.ShowErrorMessage("DNS Server should have static IP Address");
                return;
            }

            if (string.IsNullOrWhiteSpace(hostname))
            {
                this.ShowErrorMessage("Please enter Hostname.");
                return;
            }

            if (string.IsNullOrWhiteSpace(Ipaddress))
            {
                this.ShowErrorMessage("Please enter IP Address.");
                return;
            }

            try
            {
                //Call PSI file creater Method:
                CreatePSIFile(isstaticip, hostname, Ipaddress);

                if (0 == EditDnsinstallationId)
                {
                    var clientUser = new Dnsinstallation()
                    {
                        CreatedBy = Context.User.Identity.Name,
                        CreatedDate = DateTimeHelper.Now,
                        Staticip = isstaticip,
                        Hostname = hostname,
                        Ipaddress = Ipaddress
                    };

                    DnsinstallationService.Create(clientUser);
                    ShowSuccessMessage("Script Generated. Click to download.");

                    DDStaticIP.SelectedItem.Text= DropdownDefaultText;
                    txtHostname.Text = string.Empty;
                    txtIpaddress.Text = string.Empty;
                }
                else
                {
                    var Dnsinstallation = DnsinstallationService.Retrieve(EditDnsinstallationId);
                    Dnsinstallation.Staticip = isstaticip;
                    Dnsinstallation.Hostname = hostname;
                    Dnsinstallation.Ipaddress = Ipaddress;

                    DnsinstallationService.Update(Dnsinstallation);
                    ShowSuccessMessage("Script Generated. Click to download.");
                }
            }
            catch (Exception ex)
            {
                this.ShowErrorMessage(
                    ex.Message.Contains(
                        "An error occurred while updating the entries. See the inner exception for details.")
                        ? "Duplicate Entry"
                        : ex.Message);
            }
        }
 public virtual void Delete(Dnsinstallation entity)
 {
     this.Service.Delete(entity);
 }