WindowClosingEventArgs Class
Contains data for the Closing event.
Namespace: DevExpress.Blazor
Assembly: DevExpress.Blazor.v24.2.dll
NuGet Package: DevExpress.Blazor
#Declaration
public class WindowClosingEventArgs :
CancelEventArgs
#Remarks
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 |
---|---|
Close |
A user clicks a custom Close button (if you called the predefined Close |
Escape |
A user presses Escape. |
Programmatically | You set the Visible property to false or call the Close |
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 style="margin-left: 0; margin-right: auto;" @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;
}
}