EnvironmentPolicy.ExitingProcess Event

Fires when the DevExpress control attempts to exit the current process. Handle this event to allow or suppress the operation.

Namespace : DevExpress.Data.Utils

Assembly : DevExpress.Data.v25.2.dll

NuGet Package : DevExpress.Data

Declaration

C#
VB.NET

csharp

public static event EventHandler<EnvironmentPolicy.ExitingProcessEventArgs> ExitingProcess

Public Shared Event ExitingProcess As EventHandler(Of EnvironmentPolicy.ExitingProcessEventArgs)

Event Data

The ExitingProcess event's data class is EnvironmentPolicy.ExitingProcessEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs.
Exception	Gets the exception.
ExitCode	Gets or sets the exit code of the process.
Message	Gets the error message.

The event data class exposes the following methods:

Method	Description
ToString()	Returns a human-readable representation of the `ExitingProcessEventArg` object, which can be useful for debugging, logging, or understanding the failure.

Remarks

Use the e.ExitCode event parameter to obtain and/or modify the exit code of the process. Set the e.Cancel event parameter to true to suppress the operation.

C#
VB.NET

csharp

[STAThread]
static void Main() {
    Application.EnableVisualStyles();
    Application.SetCompatibleTextRenderingDefault(false);
    DevExpress.Data.Utils.EnvironmentPolicy.ExitingProcess += EnvironmentPolicy_ExitingProcess;
    Application.Run(new Form1());
}

static void EnvironmentPolicy_ExitingProcess(object sender, DevExpress.Data.Utils.EnvironmentPolicy.ExitingProcessEventArgs e) {
    if (e.ExitCode != 0) {
        Log.Append(e.Message);
        e.ExitCode = 0;
    }
}

<STAThread>
Shared Sub Main()
    Application.EnableVisualStyles()
    Application.SetCompatibleTextRenderingDefault(False)
    AddHandler DevExpress.Data.Utils.EnvironmentPolicy.ExitingProcess, AddressOf EnvironmentPolicy_ExitingProcess
    Application.Run(New Form1())
End Sub

Shared Sub EnvironmentPolicy_ExitingProcess(ByVal sender As Object, ByVal e As DevExpress.Data.Utils.EnvironmentPolicy.ExitingProcessEventArgs)
    If e.ExitCode <> 0 Then
        Log.Append(e.Message)
        e.ExitCode = 0
    End If
End Sub

Tip

Read the following topic for additional information: Environment Policy.