# TabPageChangingEventArgs Class | WinForms Controls | DevExpress Documentation

# TabPageChangingEventArgs Class

Provides data for the [XtraTabControl.SelectedPageChanging](/WindowsForms/DevExpress.XtraTab.XtraTabControl.SelectedPageChanging) event.

**Namespace**: [DevExpress.XtraTab](/WindowsForms/DevExpress.XtraTab)

        **Assembly**:
        DevExpress.XtraEditors.v26.1.dll

## Declaration

- C#
- VB.NET

                        <section id="tabpanel_syntax_tabid_DevExpress.XtraTab.TabPageChangingEventArgs-csharp" role="tabpanel" data-tab="tabid-csharp" class="tab-group__tab-content tab-group__tab-content--code" style="display: block">
                            <pre><code data-code-links="{&quot;Object&quot;:&quot;https://learn.microsoft.com/dotnet/api/system.object&quot;,&quot;EventArgs&quot;:&quot;https://learn.microsoft.com/dotnet/api/system.eventargs&quot;,&quot;TabPageChangedEventArgs&quot;:&quot;/WindowsForms/DevExpress.XtraTab.TabPageChangedEventArgs&quot;}" class="lang-csharp hljs">public class TabPageChangingEventArgs :&#xA;    TabPageChangedEventArgs</code></pre>
                        </section>
                        <section id="tabpanel_syntax_tabid_DevExpress.XtraTab.TabPageChangingEventArgs-vb" role="tabpanel" data-tab="tabid-vb" class="tab-group__tab-content tab-group__tab-content--code" style="display: none">
                            <pre><code data-code-links="{&quot;Object&quot;:&quot;https://learn.microsoft.com/dotnet/api/system.object&quot;,&quot;EventArgs&quot;:&quot;https://learn.microsoft.com/dotnet/api/system.eventargs&quot;,&quot;TabPageChangedEventArgs&quot;:&quot;/WindowsForms/DevExpress.XtraTab.TabPageChangedEventArgs&quot;}" class="lang-vb hljs">Public Class TabPageChangingEventArgs&#xA;    Inherits TabPageChangedEventArgs</code></pre>
                        </section>

## Related API Members

**TabPageChangingEventArgs** is the data class for the following events:

- [XtraTabControl.SelectedPageChanging](/WindowsForms/DevExpress.XtraTab.XtraTabControl.SelectedPageChanging)

## Inheritance

[Object](https://learn.microsoft.com/dotnet/api/system.object)
[EventArgs](https://learn.microsoft.com/dotnet/api/system.eventargs)
[TabPageChangedEventArgs](/WindowsForms/DevExpress.XtraTab.TabPageChangedEventArgs)
TabPageChangingEventArgs

See Also

[TabPageChangingEventArgs Members](/WindowsForms/DevExpress.XtraTab.TabPageChangingEventArgs._members)

[SelectedPageChanging](/WindowsForms/DevExpress.XtraTab.XtraTabControl.SelectedPageChanging)

[DevExpress.XtraTab Namespace](/WindowsForms/DevExpress.XtraTab)