RegexStringValidatorAttribute.ValidatorInstance Property

Definition

Namespace:

System.Configuration

Assembly:

System.Configuration.ConfigurationManager.dll

Source:

RegexStringValidatorAttribute.cs

Gets an instance of the RegexStringValidator class.

C#

public override System.Configuration.ConfigurationValidatorBase ValidatorInstance { get; }

Property Value

ConfigurationValidatorBase

The ConfigurationValidatorBase validator instance.

Examples

The following example shows how to use the ValidatorInstance method.

C#

            ConfigurationValidatorBase valBase;

            RegexStringValidatorAttribute rstrValAttr =
            new RegexStringValidatorAttribute(@"\w+\S*");

            // Get the regular expression string.
            string regex = rstrValAttr.Regex;
            Console.WriteLine("Regular expression: {0}", regex);


            string badValue = "&%$bbb";
            string goodValue = "filename.txt";

            try
            {
                valBase = rstrValAttr.ValidatorInstance;
                valBase.Validate(goodValue);
                // valBase.Validate(badValue);
            }
            catch (ArgumentException e)
            {
                // Display error message.
                string msg = e.ToString();
#if DEBUG
                Console.WriteLine(msg);
#endif
            }

Remarks

You use the ValidatorInstance property to perform string validation by calling its Validate method.

Applies to

See also

• ConfigurationValidatorAttribute