title: How to find any matching record with multiple parameter .net core +mongodb
body: <p>I have a requirement where i need to fetch the matching records when we pass multiple parameters. For example if i have four parameter coming from API but suppose user passed only two parameters and rest two are coming as null. In that case I need to find records matching with those not null parameters. If user pass all parameters then in that case I have to fetch all the records matching with all four parameters.</p>
  
  <p>I am new with mongo </p>