public static bool RegexIsMatch(object target, ValidationRuleArgs e)
{
RegexRuleArgs args = e as RegexRuleArgs;
if (args == null)
{
throw new ArgumentException("Invalid ValidationRuleArgs. e must be of type RegexRuleArgs.");
}
string pattern = args.Expression;
PropertyInfo property = target.GetType().GetProperty(e.PropertyName);
if (property == null)
{
throw new ArgumentException(string.Format("Property \"{0}\" not found on object \"{1}\"", e.PropertyName, target.GetType().ToString()));
}
if (property.PropertyType != typeof(string))
{
throw new ArgumentException(string.Format("Property \"{0}\" is not of type String.", e.PropertyName));
}
string input = (string)property.GetValue(target, null);
if ((input == null) || !Regex.IsMatch(input, pattern))
{
if (string.IsNullOrEmpty(e.Description))
{
e.Description = string.Format("{0} do not match the regular expression {1}", e.PropertyName, pattern);
}
return(false);
}
return(true);
}
/// <summary>
/// Rule ensuring a String value is matching
/// a specified regular expression.
/// </summary>
/// <param name="target">Object containing the data to validate.</param>
/// <param name="e"><see cref="ValidationRuleArgs"/> containing the information about the object to be validated, must be of type RegexRuleArgs</param>
/// <returns>False if the rule is broken; true otherwise.</returns>
/// <remarks>
/// This implementation uses late binding, and will only work
/// against String property values.
/// </remarks>
public static bool RegexIsMatch(object target, ValidationRuleArgs e)
{
RegexRuleArgs args = e as RegexRuleArgs;
if (args != null)
{
string expression = args.Expression;
PropertyInfo p = target.GetType().GetProperty(e.PropertyName);
if (p != null)
{
if (p.PropertyType == typeof(string))
{
string value = (string)p.GetValue(target, null);
if (value == null || !Regex.IsMatch(value, expression))
{
if (string.IsNullOrEmpty(e.Description))
{
e.Description = String.Format("{0} is not valid.", e.FriendlyName);
}
return(false);
}
return(true);
}
else
{
throw new ArgumentException(string.Format("Property \"{0}\" is not of type String.", e.PropertyName));
}
}
else
{
throw new ArgumentException(string.Format("Property \"{0}\" not found on object \"{1}\"", e.PropertyName, target.GetType().ToString()));
}
}
else
{
throw new ArgumentException("Invalid ValidationRuleArgs. e must be of type RegexRuleArgs.");
}
}
