try
use file = new StreamWriter(predefinedPPIFilepath)
file.Write(JsonConvert.SerializeObject(predefinedPPI, JsonSerializerSettings(Formatting = Formatting.Indented)))
try
use file = new StreamWriter(predefinedPPIFilepath)
file.Write(JsonConvert.SerializeObject(predefinedPPI, JsonSerializerSettings(Formatting = Formatting.Indented)))