Following example is used to create an Even number validator using sitecore
Step 1: Create a
new class inherited from StandardValidator
class
using
Sitecore.Data.Validators;
using
System.Runtime.Serialization;
namespace
Demo.Validators
{
[Serializable]
public class EvenNumberValidator :
Sitecore.Data.Validators.StandardValidator
{
public EvenNumberValidator() { }
public EvenNumberValidator(
SerializationInfo info,StreamingContext context):base(info,context)
{
}
}
}
Step 2: Override Name property and Evaluate & GetMaxValidatorResult
methods.
using
Sitecore.Data.Validators;
using
System.Runtime.Serialization;
namespace
Demo.Validators
{
[Serializable]
public class EvenNumberValidator :
Sitecore.Data.Validators.StandardValidator
{
public EvenNumberValidator() { }
public EvenNumberValidator( SerializationInfo
info,StreamingContext context):base(info,context)
{
}
public override string Name
{
get {
return (this.ToString()); // returns validator name to be displayed in
error message
}
}
protected override ValidatorResult
Evaluate() //executes on validation
{
string val =
GetControlValidationValue(); //fetches
value of a control. GetItem() can be used to fetch complete item
int n;
bool isEven = false;
bool isNumeric = int.TryParse(val,
out n);
if(isNumeric)
{
isEven = n % 2 == 0 ? true :
false;
}
if(isEven)
{
return (ValidatorResult.Valid);
// validation success
}
else
{
//validation failed
Text = String.Format("{0}
is not an even number!!",val); //Error
message to be displayed
return
(GetFailedResult(ValidatorResult.Error)); //error
level
}
}
protected override ValidatorResult
GetMaxValidatorResult()//blocks
operations if we return FatalError or CriticalError
{
return
(GetFailedResult(ValidatorResult.Error));
}
}
}
If the result of the GetMaxValidatorResult()
method is FatalError or CriticalError, then Sitecore will block
operations such as save or workflow commands in the user interface until validation
completes.
Validation Bar and Quick Action Bar validators never block
user interface operations.
Step 3: Create a
new validator (here Even Number Validation) at /sitecore/system/Settings/Validation
Rules/Field Rules section using /sitecore/templates/System/Validation/Validation
Rule template. Set Title, Description and Type properties.
Step 4: Assign the validator to any field in a
template. Here I have assigned it to “Validate Button” type of validation.
Step 5: Perform
validation using “Validation” button under “Review” tab.
