ProcessStartPolicy.Starting Event

Fires before a process starts and allows you to cancel the process.

Namespace: DevExpress.Data.Utils

Assembly: DevExpress.Data.Desktop.v23.2.dll

NuGet Packages: DevExpress.Data.Desktop, DevExpress.ExpressApp.Win.Design

Declaration

C#

public static event CancelEventHandler Starting

VB.NET

Public Shared Event Starting As CancelEventHandler

Event Data

The Starting event's data class is CancelEventArgs. The following properties provide information specific to this event:

Property	Description
Cancel	Gets or sets a value indicating whether the event should be canceled.

Remarks

Handle Starting and Started events to perform custom actions when a DevExpress UI control starts a process.

C#

static void Main() {
  ProcessStartPolicy.Starting += ProcessStartPolicy_Starting;
  ProcessStartPolicy.Started += ProcessStartPolicy_Started;
  // ...
}
private static void ProcessStartPolicy_Starting(object sender, System.ComponentModel.CancelEventArgs e) {
  ProcessStartInfo psi = sender as ProcessStartInfo;
  e.Cancel = !psi.FileName.Contains("www.devexpress.com");
}
private static void ProcessStartPolicy_Started(object sender, EventArgs e) {
  Process process = sender as Process;
  // ...
  // Log.WriteMessage("process started");
}

VB.NET

Shared Sub Main()
  AddHandler ProcessStartPolicy.Starting, AddressOf ProcessStartPolicy_Starting
  AddHandler ProcessStartPolicy.Started, AddressOf ProcessStartPolicy_Started
  ' ...
End Sub
Private Shared Sub ProcessStartPolicy_Starting(sender As Object, e As CancelEventArgs)
  Dim psi As ProcessStartInfo = CType(sender, ProcessStartInfo)
  e.Cancel = Not psi.FileName.Contains("www.devexpress.com")
End Sub
Private Shared Sub ProcessStartPolicy_Started(sender As Object, e As EventArgs)
  Dim process As Process = CType(sender, Process)
  ' ...
  ' Log.WriteMessage("process started")
End Sub

Read the following topic for more information: Suppress New Processes Initiated by .NET Controls.