//Method to add package
 private void btnAdd_Click(object sender, EventArgs e)
 {
     frmAddModifyPackages addPackagesForm = new frmAddModifyPackages();
     addPackagesForm.addPackages = true;
     DialogResult result = addPackagesForm.ShowDialog();
     if (result == DialogResult.OK)
     {
         packages = addPackagesForm.packages;
         txtPackageId.Text = packages.PackageId.ToString();
         this.DisplayPackages();
     }
 }
 //Method to modify package
 private void btnModify_Click(object sender, EventArgs e)
 {
     frmAddModifyPackages modifyPackagesForm = new frmAddModifyPackages();
     modifyPackagesForm.addPackages = false;
     modifyPackagesForm.packages = packages;
     DialogResult result = modifyPackagesForm.ShowDialog();
     if (result == DialogResult.OK)
     {
         packages = modifyPackagesForm.packages;
         this.DisplayPackages();
     }
     else if (result == DialogResult.Retry)
     {
         this.GetPackages(packages.PackageId);
         if (packages != null)
             this.DisplayPackages();
         else
             this.ClearControls();
     }
 }