- ToolStripItemCollection - ToolStripItemCollection(ToolStrip, ToolStripItem[]) 
- IsReadOnly 
- this[Int32] 
- this[String] 
- Add(Image) 
- Add(String) 
- Add(ToolStripItem) 
- Add(String, Image) 
- Add(String, Image, EventHandler) 
- AddRange(ToolStripItem[]) 
- AddRange(ToolStripItemCollection) 
- Clear() 
- Contains(ToolStripItem) 
- ContainsKey(String) 
- CopyTo(ToolStripItem[], Int32) 
- Find(String, Boolean) 
- IndexOf(ToolStripItem) 
- IndexOfKey(String) 
- Insert(Int32, ToolStripItem) 
- Remove(ToolStripItem) 
- RemoveAt(Int32) 
- RemoveByKey(String) 
 
net9.0-windows10.0.22621
    namespace System.Windows.Forms
{
    [DefaultMember("Item")]
    [Editor("System.Windows.Forms.Design.ToolStripCollectionEditor, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(UITypeEditor))]
    [ListBindable(false)]
    public class ToolStripItemCollection : ArrangedElementCollection, ICollection, IEnumerable, IList
    {
        public void CopyTo(ToolStripItem![]! array, int index);
    }
}
            | NetFx Compat Lab | 3.0 % Reference this API | 
|---|---|
| nuget.org | 0.0 % Reference this API | 
| Upgrade Planner | 0.0 % Reference this API | 
| .NET | 5.06.07.08.09.0 | 
| .NET Core | 3.03.1 | 
| .NET Framework | 2.03.03.54.04.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1 | 
| Information specific to net9.0 | |
| Platforms | This API is only available when you target a specific platform: | 
| Windows | 7.08.010.0.1776310.0.1836210.0.1904110.0.2034810.0.2200010.0.22621 | 
| Information specific to net9.0-windows10.0.22621 | |
| Assembly | System.Windows.Forms , Version=9.0.0.0, PublicKeyToken=b77a5c561934e089 | 
| Referencing | Your project needs to set  | 
| Platform Restrictions | This API is only supported on the following platforms: 
 | 
- Built-in API
- Package-provided API