How can I force form / control validation in Compact Framework?

Question

Is there a way to force verification control in .NET CF? It is quite .NET there is a Validate () method, but it is absent in CF.

I try to return control binding data to the model when the form is closed, but pressing the main menu button does not seem to steal focus from the control, and the Validating and Validated events do not fire.

Do you know any workarounds for this problem?

Answer 1

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private List<TextBoxWithValidation> textBoxesWithValidation;

:

TextBoxWithValidation emailTextBoxWithValidation = new TextBoxWithValidation(emailTextBox);
emailTextBoxWithValidation.AddValidationPair(Validator.ValidationType.VALIDATE_NOT_EMPTY, "ValidateNotEmptyEmail");
emailTextBoxWithValidation.AddValidationPair(Validator.ValidationType.VALIDATE_EMAIL, "ValidateEmailEmail");
textBoxesWithValidation.Add(emailTextBoxWithValidation);

:

private bool ValidateForm()
{
  foreach (TextBoxWithValidation textBoxWithValidation in textBoxesWithValidation)
  {
    if (!textBoxWithValidation.Validate())
    {
      return false;
    }
  }
  return true;
}

:

class TextBoxWithValidation
{
  class ValidationTypeMessagePair
  {
    public Validator.ValidationType ValidationType { get; set; }
    public string ValidationMessage { get; set; }

    public ValidationTypeMessagePair(Validator.ValidationType validationType, string validationMessage)
    {
      this.ValidationType = validationType;
      this.ValidationMessage = validationMessage;
    }
  }

  private List<ValidationTypeMessagePair> validationPairs;
  private TextBox textBox;

  public TextBoxWithValidation(TextBox textBox)
  {
    this.textBox = textBox;
    this.textBox.DataBindings["Text"].DataSourceUpdateMode = DataSourceUpdateMode.Never;            
    validationPairs = new List<ValidationTypeMessagePair>();
  }

  public void AddValidationPair(Validator.ValidationType validationType, string validationMessage)
  {
    validationPairs.Add(new ValidationTypeMessagePair(validationType, validationMessage));
  }

  public bool Validate()
  {
    foreach (ValidationTypeMessagePair validationPair in validationPairs)
    {
      if (!Validator.Validate(validationPair.ValidationType, textBox, Messages.Localize(validationPair.ValidationMessage))) return false;
    }
    textBox.DataBindings["Text"].WriteValue();
    return true;
  }

  public void ClearValidationStatus()
  {
    textBox.BackColor = System.Drawing.SystemColors.Window;
  }

}

Answer 2

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Answer 3

I think in order to trigger Validating and Validated events by focusing on another control, you need to set the AutoValidate property of the form to AutoValidate.EnableAllowFocusChange.

Hope this helps. =]