Unexpected RegexStringValidator failure in ConfigurationProperty in custom ConfigurationElement

Question

I am writing my own custom configuration section and have a ConfigurationProperty defined in a ConfigurationElement like so:

[ConfigurationProperty(\"startTi         


        

Answer 1

I wonder if the indirection from the property requires a double-escaping of the contents. If yes, then instead of:

"\\d{2}:\\d{2}:\\d{2}"

use:

@"\\d{2}:\\d{2}:\\d{2}"

Ordinarly I would think that is too much, but give it a try.

Answer 2

Try to define the default value that will pass the validation:

[ConfigurationProperty("startTime", IsRequired = false, DefaultValue = "00:00:00")]
[RegexStringValidator(@"\d{2}:\d{2}:\d{2}")]
public string StartTime
{
    get 
    {
        return (string) this["startTime"];
    }

    set
    {
        this["startTime"] = value;
    }
}