// iT SHOULD RETURN NULL IF THE STRING IS NOT VALID, RETURN THE DATETIME VALUE IF IT IS VALID
/// <summary>
/// Input text is parsed in the correct format and changed into a DateTime object.
/// If the text can not be parsed TextParseError Event is thrown.
/// </summary>
private DateTime?ParseText(string text)
{
DateTime newSelectedDate;
// TryParse is not used in order to be able to pass the exception to the TextParseError event
try
{
newSelectedDate = DateTime.Parse(text, DateTimeHelper.GetDateFormat(DateTimeHelper.GetCulture(this)));
if (Calendar.IsValidDateSelection(this._calendar, newSelectedDate))
{
return(newSelectedDate);
}
else
{
DatePickerDateValidationErrorEventArgs dateValidationError = new DatePickerDateValidationErrorEventArgs(new ArgumentOutOfRangeException("text", System.SR.Get(SRID.Calendar_OnSelectedDateChanged_InvalidValue)), text);
OnDateValidationError(dateValidationError);
if (dateValidationError.ThrowException)
{
throw dateValidationError.Exception;
}
}
}
catch (FormatException ex)
{
DatePickerDateValidationErrorEventArgs textParseError = new DatePickerDateValidationErrorEventArgs(ex, text);
OnDateValidationError(textParseError);
if (textParseError.ThrowException && textParseError.Exception != null)
{
throw textParseError.Exception;
}
}
return(null);
}
/// <summary>
/// 通常，当用户打开日历视图时会丢弃非法值，但可以选择填充一些文本以向用户通知发生了问题
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void datePickerDateValidationError_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
//lblError.Text = "," + e.Text +
// "' is not a valid value because " + e.Exception.Message;
}
private void _elementToCleanUp_TextParseError2(object sender, DatePickerDateValidationErrorEventArgs e)
{
e.ThrowException = false;
}
private void DatePicker_DateValidationError_1(object sender, DatePickerDateValidationErrorEventArgs e)
{
e.ThrowException = false;
}
private void DatePicker_OnDateValidationError(object?sender, DatePickerDateValidationErrorEventArgs e)
{
LabelError.Text = $"'{e.Text}' is not a valid value because ${e.Exception.Message}";
}
private void dateSampling_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
((DatePicker)sender).Text = DateTime.Now.ToShortDateString();
}
private void _elementToCleanUp_TextParseError2(object sender, DatePickerDateValidationErrorEventArgs e)
{
e.ThrowException = false;
}
private void dp_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
MessageBox.Show("Insert valide values", "Error", MessageBoxButton.OK, MessageBoxImage.Information);
}
/// <summary>
/// Validate DepartureDataPicker OnDateVlalidationError
/// </summary>
/// <param name="sender">Sender parameter</param>
/// <param name="e">Event parameter</param>
private void DepartureDateDatePickerOnDateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
MessageBox.Show("Invalid Date format");
}
/// <summary>
/// Raises the DateValidationError event.
/// </summary>
/// <param name="e">A DatePickerDateValidationErrorEventArgs that contains the event data.</param>
protected virtual void OnDateValidationError(DatePickerDateValidationErrorEventArgs e)
{
EventHandler<DatePickerDateValidationErrorEventArgs> handler = this.DateValidationError;
if (handler != null)
{
handler(this, e);
}
}
// iT SHOULD RETURN NULL IF THE STRING IS NOT VALID, RETURN THE DATETIME VALUE IF IT IS VALID
/// <summary>
/// Input text is parsed in the correct format and changed into a DateTime object.
/// If the text can not be parsed TextParseError Event is thrown.
/// </summary>
private DateTime? ParseText(string text)
{
DateTime newSelectedDate;
// TryParse is not used in order to be able to pass the exception to the TextParseError event
try
{
newSelectedDate = DateTime.Parse(text, DateTimeHelper.GetDateFormat(DateTimeHelper.GetCulture(this)));
if (Calendar.IsValidDateSelection(this._calendar, newSelectedDate))
{
return newSelectedDate;
}
else
{
DatePickerDateValidationErrorEventArgs dateValidationError = new DatePickerDateValidationErrorEventArgs(new ArgumentOutOfRangeException("text", SR.Get(SRID.Calendar_OnSelectedDateChanged_InvalidValue)), text);
OnDateValidationError(dateValidationError);
if (dateValidationError.ThrowException)
{
throw dateValidationError.Exception;
}
}
}
catch (FormatException ex)
{
DatePickerDateValidationErrorEventArgs textParseError = new DatePickerDateValidationErrorEventArgs(ex, text);
OnDateValidationError(textParseError);
if (textParseError.ThrowException && textParseError.Exception != null)
{
throw textParseError.Exception;
}
}
return null;
}
private void DatePicker_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
(sender as DatePicker).SelectedDate = null;
}
private void DatePicker_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
ErrorLabel.Text = string.Format("'{0}' is not a valid value because {1}", e.Text, e.Exception.Message);
}
private void datePicker1_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
MessageBox.Show(e.Text + " 该日期非法 " + e.Exception.Message);
}
private void DatePicker_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
}
private void dpStop_DateValidationError(object sender, DatePickerDateValidationErrorEventArgs e)
{
MessageBox.Show("用户输入了一个非法日期！" + e.Text);
}
