14 references to Contains
System.Windows.Forms (1)
System\Windows\Forms\Controls\ListBoxes\ListBox.ObjectCollection.cs (1)
266
bool IList.Contains(object? value) =>
Contains
(value!);
System.Windows.Forms.Design (1)
System\Windows\Forms\Design\DataGridViewColumnCollectionDialog.cs (1)
288
if (e.Component is ListBoxItem && _selectedColumns.Items.
Contains
(e.Component))
System.Windows.Forms.Tests (12)
System\Windows\Forms\ListBox.ObjectCollectionTests.cs (12)
3945
Assert.False(collection.
Contains
(0));
3946
Assert.False(collection.
Contains
(1));
3947
Assert.False(collection.
Contains
(new object()));
3960
Assert.False(collection.
Contains
(0));
3961
Assert.True(collection.
Contains
(1));
3962
Assert.False(collection.
Contains
(2));
3963
Assert.False(collection.
Contains
(new object()));
3968
Assert.True(collection.
Contains
(0));
3969
Assert.True(collection.
Contains
(1));
3970
Assert.False(collection.
Contains
(2));
3971
Assert.False(collection.
Contains
(new object()));
3980
Assert.Throws<ArgumentNullException>("value", () => collection.
Contains
(null));