/// <summary>
/// Determines if the value specified in the ValidateIfMemberValueIsValue is a valid value.
/// </summary>
/// <param name="sender">The sender.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">Can not base validation off of a non-boolean property.</exception>
public bool CanValidate(IValidatable sender)
{
if (string.IsNullOrEmpty(this.ValidateIfMemberValueIsValid))
{
return(true);
}
string valueToParse = string.Empty;
bool evaluateInverseValue = false;
if (this.ValidateIfMemberValueIsValid.StartsWith("!"))
{
evaluateInverseValue = true;
valueToParse = this.ValidateIfMemberValueIsValid.Substring(1);
}
else
{
valueToParse = this.ValidateIfMemberValueIsValid;
}
bool result = false;
object valueToCompare = this.GetComparisonValue(sender, valueToParse);
if (valueToCompare is bool)
{
bool.TryParse(valueToCompare.ToString(), out result);
}
else if (valueToCompare is string)
{
// We can not validate if the string is empty.
result = !string.IsNullOrWhiteSpace(valueToCompare.ToString());
}
else if (valueToCompare is int || valueToCompare is short || valueToCompare is long || valueToCompare is double || valueToCompare is float || valueToCompare is decimal)
{
var numberGreaterThanRule = new ValidateNumberIsGreaterThanAttribute();
numberGreaterThanRule.GreaterThanValue = "0";
numberGreaterThanRule.ValidationMessageType = this.ValidationMessageType;
numberGreaterThanRule.FailureMessage = this.FailureMessage;
PropertyInfo property = this.GetAlternatePropertyInfo(sender, ValidateIfMemberValueIsValid);
IValidationMessage validationMessage = numberGreaterThanRule.Validate(property, sender);
// if we are greater than 0, then we hav a valid value and can validate.
result = validationMessage == null;
}
else if (valueToCompare == null)
{
// We can not validate if the object is null.
result = false;
}
else
{
result = true;
}
return(evaluateInverseValue ? !result : result);
}
/// <summary>
/// Determines if the value specified in the ValidateIfMemberValueIsValue is a valid value.
/// </summary>
/// <param name="sender">The sender.</param>
/// <returns></returns>
/// <exception cref="System.ArgumentException">Can not base validation off of a non-boolean property.</exception>
public bool CanValidate(IValidatable sender)
{
if (string.IsNullOrEmpty(this.ValidateIfMemberValueIsValid))
{
return true;
}
string valueToParse = string.Empty;
bool evaluateInverseValue = false;
if (this.ValidateIfMemberValueIsValid.StartsWith("!"))
{
evaluateInverseValue = true;
valueToParse = this.ValidateIfMemberValueIsValid.Substring(1);
}
else
{
valueToParse = this.ValidateIfMemberValueIsValid;
}
bool result = false;
object valueToCompare = this.GetComparisonValue(sender, valueToParse);
if (valueToCompare is bool)
{
bool.TryParse(valueToCompare.ToString(), out result);
}
else if (valueToCompare is string)
{
// We can not validate if the string is empty.
result = !string.IsNullOrWhiteSpace(valueToCompare.ToString());
}
else if (valueToCompare is int || valueToCompare is short || valueToCompare is long || valueToCompare is double || valueToCompare is float || valueToCompare is decimal)
{
var numberGreaterThanRule = new ValidateNumberIsGreaterThanAttribute();
numberGreaterThanRule.GreaterThanValue = "0";
numberGreaterThanRule.ValidationMessageType = this.ValidationMessageType;
numberGreaterThanRule.FailureMessage = this.FailureMessage;
PropertyInfo property = this.GetAlternatePropertyInfo(sender, ValidateIfMemberValueIsValid);
IValidationMessage validationMessage = numberGreaterThanRule.Validate(property, sender);
// if we are greater than 0, then we hav a valid value and can validate.
result = validationMessage == null;
}
else if (valueToCompare == null)
{
// We can not validate if the object is null.
result = false;
}
else
{
result = true;
}
return evaluateInverseValue ? !result : result;
}