internal void LoadConfigFromJSONAsync(string filename)
{
this.filename = filename;
MongoConfig config = JsonConvert.DeserializeObject <MongoConfig>(File.ReadAllText(filename));
PromptHelper.ShowPromptInfo($"Server: {config.ServerUrl}");
PromptHelper.ShowPromptInfo(config.FieldName);
PromptHelper.ShowPromptInfo(config.SearchType);
MongoServer = config.ServerUrl;
MongoDatabase = config.Database;
PromptHelper.ShowPromptInfo($"Last {LastItems} files: ");
InitGridAsync(config.FieldName, config.SearchType, "").GetAwaiter().GetResult();
ShowMenu();
string fileToDownload = PromptHelper.EnterValue($"Enter: ");
}