How to use conditional statements with non boolean types when generating code templates in .NET

If MyParameter is supplied, I want this code block generated. The problem is it never generates whether MyParameter is supplied or not. It seems that conditional statements only work for boolean parameters. In my case MyParameter is of type string.

public class MyClass
{
    #if (MyParameter)
    public string MyParameter { get; set; }
    ---#endif
}

I tried to do this

public class MyClass
{
     #if (!string.IsNullOrEmpty(MyParameter))
     public string MyParameter { get; set; }
     ---#endif
}

But unlike the first, this always generates even when MyParameter is null or empty. I have set the defaultValue for my parameter to "" in template.json but the condition still always evaluate as true.

You can add a computed setting to your template.json file and use that in your source. For example:

"MyParameter": {
    "type": "parameter",
    "datatype": "text",
    "defaultValue": ""
    ...
},
"IsMyParameterEmpty": {
    "type": "computed",
    "value": "MyParameter == \"\""
}

Then in your C# source:

public class MyClass
{
    #if (!IsMyParameterEmpty)
    public string MyParameter { get; set; }
    ---#endif
}