CODEWITHSUNDEEP
c#winformslistboxlistboxitem
dontknowathing
dontknowathing

Reputation: 93

The type or namespace name 'ListBoxItem' could not be found (are you missing a using directive or an assembly reference?)

I am just trying to add a selected item from a ComboBox to a ListBox, like this,

lboProveedoresSeleccionados.Items.Add(new  ListBoxItem
  (comboBox1.SelectedValue, comboBox1.SelectedText));

But i am getting this error "The type or namespace name 'ListBoxItem' could not be found (are you missing a using directive or an assembly reference?)", despite the fact that i have a reference already

using System.Windows.Controls;

Any idea? I know that i can just add the text, but i'm interested in have both, the values and the descriptions.

Upvotes: 1

Views: 3583

Answers (1)

adv12
adv12

Reputation: 8551

Since this is a Windows Forms project, you can't use the WPF System.Windows.Controls.ListBoxItem. But note that ListBox.Items is an ObjectCollection, not specifically a List<string> or somesuch. It will accept any type of object and display the result of calling ToString() on it. So you could make a class with the data you need and add instances of that class to the ListBox.

Alternatively, if you want to use, e.g., some property of the object instead of ToString(), you can use the DataSource property and set the ListBox's DisplayMember and ValueMember.

Upvotes: 4

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