Allow only numbers in string propertie (Strategy Tab)

[sidlercom80]

Hi, I have a public string property and would like to protect it so that only numbers can be entered. For example, if 120000 is entered, it should be automatically formatted to 12:00:00. How can I best solve this? Does anyone have an idea, is there an attribute or similar?

[NinjaTrader_Jesse]

Hello sidlercom80,

You could add logic into the set { } to check what value was set, if it wasn't a number you could pass a default number as the set value instead of whatever the user had used.

private string test = "";
public string Test
{
    get { return test.ToString(); }
    set {
        if(value != "0") test = "0";
        else test = value;
    }
}

Here is a simple example of a property that simply checks if the string is equal to "0", if its not 0 it will set the string to 0. You could add any other conditions into a set just like that to parse the string to a number or do whatever task was needed before setting the value.

[sidlercom80]

Hi _Jesse, here is my solution:

public string SessionStartTimeString
{
   get { return sessionStartTimeString; }
   set
         {
            if (value != sessionStartTimeString)
            {
               var pattern = @"(?:[01]\d|2[0-3]):(?:[0-5]\d):(?:[0-5]\d)"
               var regexp = new Regex(pattern);

               if (regexp.IsMatch(value))
               {
                   sessionStartTimeString = value;
               }
            }
         }
}