} //to avoid an XAML annoying warning: "No constructor for type 'xyz' has 0 parameters." Somehow the inherited one doesn't do the trick!?! I guess it's a reflection buggy.
// ReSharper restore EmptyConstructor
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
if (value == null || value == DBNull.Value)
{
return(Visibility.Visible);
}
return(StringEvaluator.EvalToBool(parameter.ToString().Replace("?", value.ToString())) ? Visibility.Visible : Visibility.Collapsed);
}
} //to avoid an XAML annoying warning: "No constructor for type 'xyz' has 0 parameters." Somehow the inherited one doesn't do the trick!?! I guess it's a reflection buggy.
// ReSharper restore EmptyConstructor
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
var expression = parameter.ToString().Replace("?", (value ?? "").ToString());
if (VariableReplacement != null)
{
VariableReplacement(ref expression);
}
return(StringEvaluator.EvalToBool(expression.ToLower())); //nugget:
}
/// <summary>
///
/// </summary>
/// <param name="drv"></param>
/// <param name="isValid"></param>
/// <param name="fieldName">to reference another field to be invalidated as well, comma delimit with no spaces (yeah i know it's hacky)</param>
/// <param name="doValidation"> </param>
/// <param name="expression"></param>
/// <param name="message"></param>
/// <returns></returns>
protected bool ValidateGeneric(DataRowView drv, ref bool isValid, string fieldName, bool doValidation = true, string expression = "'?' != ''", string message = "Required")
{
//if (!drv.IsDirty()) return (true);
string[] flds = fieldName.Split(',');
if (flds.Length == 2)
{
fieldName = flds[0];
}
bool isvalid = true;
if (doValidation)
{
isvalid = StringEvaluator.EvalToBool(expression.Replace("?", drv[fieldName].ToString()));
}
isValid = isValid && isvalid;
//if error, set error and notify UI, otherwise clear any existing errors
if (!isvalid)
{
if (flds.Length == 2)
{
drv.SetColumnError(flds[1], message);
}
drv.SetColumnError(fieldName, message); //nugget: setting errors on ADO.Net DataRowView fields which propogate all the way back up to little red boxes & tooltips on the corresponding UI widgets
}
else
{
if (flds.Length == 2)
{
drv.ClearColumnError(flds[1]);
}
drv.ClearColumnError(fieldName);
}
return(isvalid);
}
} //to avoid an XAML annoying warning: "No constructor for type 'xyz' has 0 parameters." Somehow the inherited one doesn'SelectedFoldersTable do the trick!?! I guess it's a reflection bug.
public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
return(StringEvaluator.EvalToBool(parameter.ToString().Replace("?", value.ToString()).ToLower())); //nugget:
}