var color = "Black";
var age = 4;
var query = "Select * from Cats where Color = :Color and Age > :Age";
var dynamicParameters = new DynamicParameters();
dynamicParameters.Add("Color", color);
dynamicParameters.Add("Age", age);
using (var connection = new SqlConnection(/* Your Connection String Here */))
{
IEnumerable<dynamic> results = connection.Query(query, dynamicParameters);
}