/* Removes a package. */
public static bool remove(Package package)
{
RegistryKey uninstall = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall", false);
foreach(string key in uninstall.GetSubKeyNames())
if(key == package.Name) {
RegistryKey target = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\" + key, false);
try {
Process.Start((string)target.GetValue("UninstallString"));
}
catch(Exception) {
return false;
}
return true;
}
return false;
}
private void PackageForm_Load(object sender, EventArgs e)
{
if(!engine.IsPackage(package)) {
MessageBox.Show("That's not a package.");
Dispose();
}
selectedPackage = engine.GetPackage(package);
status = engine.GetStatus(selectedPackage);
switch(status) {
case Engine.PackageStatus.NEWER:
button1.Text = "Upgrade";
break;
case Engine.PackageStatus.NOT_INSTALLED:
button1.Text = "Install";
break;
default: // INSTALLED, OLDER
button1.Text = "Remove";
break;
}
dataGridView1.AutoGenerateColumns = false;
dataGridView1.CellDoubleClick += new DataGridViewCellEventHandler(dataGridView1_CellContentDoubleClick);
PackageForm.MakeRow(dataGridView1, selectedPackage);
}
private void AddPackage(Package[] packages, ListBox listbox)
{
foreach(Package p in packages)
listbox.Items.Add(p.Name);
}
/* Returns the status of package relatives to system. */
public PackageStatus GetStatus(Package package)
{
RegistryKey uninstall = Registry.LocalMachine.OpenSubKey("SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall", false);
foreach(string key in uninstall.GetSubKeyNames())
if(key == package.Name)
return PackageStatus.INSTALLED;
return PackageStatus.NOT_INSTALLED;
}