Combobox items in wpf forms
Hello everyone!!!
You may use drop down lists in your projects
recently. If you want to change the items in a combobox according to the
selection of previous combobox what you will do? I’m going to tell how I do
that in my wpf form.
In my case when it selects a mathematical operation
it should load relevant formats to another combobox.
ComboBoxItem item0 = new ComboBoxItem();
ComboBoxItem item1 = new ComboBoxItem();
ComboBoxItem item2 = new ComboBoxItem();
ComboBoxItem item3 = new ComboBoxItem();
ComboBoxItem item4 = new ComboBoxItem();
ComboBoxItem item5 = new ComboBoxItem();
ComboBoxItem item6 = new ComboBoxItem();
ComboBoxItem item7 = new ComboBoxItem();
ComboBoxItem item8 = new ComboBoxItem();
ComboBoxItem item9 = new ComboBoxItem();
ComboBoxItem item10 = new ComboBoxItem();
ComboBoxItem item11 = new ComboBoxItem();
if
(cmbsimpleOperation.SelectedIndex == 0)
{
cmbFormat.IsEnabled = true;//enable format selection
//load
relevent items to index 0
item0.Content = "A+B";
item0.Background = Brushes.White;
item0.Foreground = Brushes.Black;
cmbFormat.Items.Add(item0);
item1.Content = "A+B'";
item1.Background = Brushes.White;
item1.Foreground = Brushes.Black;
cmbFormat.Items.Add(item1);
item2.Content = "A'+B";
item2.Background = Brushes.White;
item2.Foreground = Brushes.Black;
cmbFormat.Items.Add(item2);
item3.Content = "A'+B'";
item3.Background = Brushes.White;
item3.Foreground = Brushes.Black;
cmbFormat.Items.Add(item3);
//remove
already loaded items
cmbFormat.Items.Remove(item4);
cmbFormat.Items.Remove(item5);
cmbFormat.Items.Remove(item6);
cmbFormat.Items.Remove(item7);
cmbFormat.Items.Remove(item8);
cmbFormat.Items.Remove(item9);
cmbFormat.Items.Remove(item10);
cmbFormat.Items.Remove(item11);
}
if (cmbsimpleOperation.SelectedIndex == 1)
{
cmbFormat.IsEnabled = true;//enable format selection
//load
relevent items to index 1
item4.Content = "A-B";
item4.Background = Brushes.White;
item4.Foreground = Brushes.Black;
cmbFormat.Items.Add(item4);
item5.Content = "A-B'";
item5.Background = Brushes.White;
item5.Foreground = Brushes.Black;
cmbFormat.Items.Add(item5);
item6.Content = "A'-B";
item6.Background = Brushes.White;
item6.Foreground = Brushes.Black;
cmbFormat.Items.Add(item6);
item7.Content = "A'-B'";
item7.Background = Brushes.White;
item7.Foreground = Brushes.Black;
cmbFormat.Items.Add(item7);
//removealready
loaded items
cmbFormat.Items.Remove(item0);
cmbFormat.Items.Remove(item1);
cmbFormat.Items.Remove(item2);
cmbFormat.Items.Remove(item3);
cmbFormat.Items.Remove(item8);
cmbFormat.Items.Remove(item9);
cmbFormat.Items.Remove(item10);
cmbFormat.Items.Remove(item11);
}
if (cmbsimpleOperation.SelectedIndex == 2)
{
cmbFormat.IsEnabled = true;//enable format selection
//load
relevent items to index 2
item8.Content = "A*B";
item8.Background = Brushes.White;
item8.Foreground = Brushes.Black;
cmbFormat.Items.Add(item8);
item9.Content = "A*B'";
item9.Background = Brushes.White;
item9.Foreground = Brushes.Black;
cmbFormat.Items.Add(item9);
item10.Content = "A'*B";
item10.Background = Brushes.White;
item10.Foreground = Brushes.Black;
cmbFormat.Items.Add(item10);
item11.Content = "A'*B'";
item11.Background = Brushes.White;
item11.Foreground = Brushes.Black;
cmbFormat.Items.Add(item11);
//remove
alreadyloaded items
cmbFormat.Items.Remove(item0);
cmbFormat.Items.Remove(item1);
cmbFormat.Items.Remove(item2);
cmbFormat.Items.Remove(item3);
cmbFormat.Items.Remove(item4);
cmbFormat.Items.Remove(item5);
cmbFormat.Items.Remove(item6);
cmbFormat.Items.Remove(item7);
}
This is little bit different format comparing to
windows form. Try this out.
Hope this post will help to you.
Don’t
forget to leave a comment. Your suggestions are highly welcome.
Cheers!!!
Categories:
wpf
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