Keep AppointmentDialog open on error

[Michael]

Hi,

I'm using the appointment dialog for creating and editing appointments. I want to inform the user about errors in the dialog. For example if he did not fill out the subject text box. I could catch the AppointmentSaving event, but at this time the dialog has already been closed. I want to inform the user before the dialog has been closed so he can make changes in the dialog. How can I achieve this?

thanks in advance,

michael

[Yana]

Hello Michael,

We are currently working on an example that demonstrates how to implement validation in
EditAppointmentDialog. I'll attach the project here as soon as it's ready. Thank you for your patience.

Greetings,
Yana
the Telerik team

[Michael]

Hello Yana,

thanks for your answer. I'm looking forward to the example.

best regards,

michael

[Yana]

Hello Michael,

We're so sorry for the delay.

I've attached an example demonstrating the needed validation. Please download it and give it a try.
Hope this helps.

Greetings,
Yana
the Telerik team

[Fernando]

Hi there,

The sample code you provide has helped me, but is there any way to send messages to the user such as a message box or a label informing the user about different validations scenarios

Thanks in advance

Fernando

[Yana]

Hello Fernando,

Currently validation tooltips are not supported in RadControls for WPF, however we're working on this task and hopefully they will be available in the upcoming Q3 release.

For now you can add validation messages inside CustomAppointment class:

public string ValidateSubject()
{
    this.IsValid = !String.IsNullOrEmpty(this.Subject);
    if (String.IsNullOrEmpty(this.Subject))
    {
        return "Subject cannot be empty";
    }
    return null;
}

and then in the Ok button click event show a MessageBox with the error:

private void RadButton_Click(object sender, RoutedEventArgs e)
{
    if (String.IsNullOrEmpty(app.Error))
    {
        RadScheduleViewCommands.CommitEditAppointment.Execute(app, this.scheduleView);
        (sender as RadButton).ParentOfType<RadWindow>().Close();
    }
    else
        MessageBox.Show(app.Error);
}

I hope this helps.

Regards,
Yana
Telerik