blazor-devexpress-dot-blazor-e8759a32.md
Contains data for the Closing event.
Namespace : DevExpress.Blazor
Assembly : DevExpress.Blazor.v25.2.dll
NuGet Package : DevExpress.Blazor
public class WindowClosingEventArgs :
CancelEventArgs
WindowClosingEventArgs is the data class for the following events:
The Closing event is raised before the Window is closed. Use the event argument’s CloseReason property to identify which action closes the Window. You can set the Cancel property to true to cancel a close action.
| Close Reason | Description |
|---|---|
| CloseButtonClick | A user clicks a custom Close button (if you called the predefined CloseCallback to create this button). |
| EscapePress | A user presses Escape. |
| Programmatically | You set the Visible property to false or call the CloseAsync method. |
You can also handle the Closed event that fires after the Window is closed.
In the following example, neither the Close button in the header nor the custom OK button closes the Window until a user enables the checkbox in the footer:
<DxButton Id="showDDbtton" Click="() => IsOpen = true">SHOW A WINDOW</DxButton>
<DxWindow Width="400"
@bind-IsOpen="@IsOpen"
ShowFooter="true"
HeaderText="DevExpress EULA"
Closing="EulaClosing"
Closed="EulaClosed">
<BodyTextTemplate>
<p>
The terms of our license are fully outlined/described in the Developer Express Inc End User
License Agreement (EULA) included with our product installations. Before you can install and use
a Developer Express Inc product, you must read, understand and accept the terms/conditions of
our EULAs. <a target="" _blank"" rel="" noopener noreferrer"" href="" https: //www.devexpress.com/support/eulas/"">More info...</a>
</p>
</BodyTextTemplate>
<FooterTextTemplate>
<DxCheckBox class="my-margin" @bind-Checked="@EulaAccepted">
I accept the terms of the EULA
</DxCheckBox>
<DxButton RenderStyle="ButtonRenderStyle.Primary" Text="OK" Click="context.CloseCallback" />
</FooterTextTemplate>
</DxWindow>
@code {
bool IsOpen { get; set; } = false;
bool EulaAccepted { get; set; }
void EulaClosing(WindowClosingEventArgs args) {
if (args.CloseReason == WindowCloseReason.Programmatically) {
args.Cancel = !EulaAccepted;
}
}
void EulaClosed(WindowClosedEventArgs args) {
EulaAccepted = false;
}
}
.my-margin {
margin-left: 0;
margin-right: auto;
}
Object EventArgs CancelEventArgs WindowClosingEventArgs
See Also