public IEnumerable <ValidationResult> Validate(ValidationContext validationContext)
{
if (FromDate.AsDateTime() > ToDate.AsDateTime())
{
yield return(new ValidationResult(ReportInputParametersResources.FromDateBeforeToDate, new[] { "FromDate" }));
}
if (string.IsNullOrEmpty(SelectedTextField) || SelectedTextField != "-1")
{
if (string.IsNullOrEmpty(SelectedTextField))
{
yield return
(new ValidationResult(ReportInputParametersResources.TextFieldRequired, new[] { "SelectedTextField" }));
}
if (!string.IsNullOrEmpty(SelectedTextField) && string.IsNullOrEmpty(SelectedOperator))
{
yield return
(new ValidationResult(ReportInputParametersResources.TextFieldOperatorRequired, new[] { "SelectedOperator" }));
}
if (!string.IsNullOrEmpty(SelectedTextField) && string.IsNullOrEmpty(TextSearch))
{
yield return
(new ValidationResult(ReportInputParametersResources.TextSearchRequired, new[] { "TextSearch" }));
}
}
}