How to convert List of objects to a specific type Array in C#

We have third party Test class,which has a method "Convert" which only accepts arrays of DataSample.

public class Test{
public class DataSample{

public int testVar{get;set;}
public int testVar2{get;set;}
}
//some methods

public static List<someType> Convert(DataSample[] data)
{
  //execute some steps 
}

}

We have a stored procedure which gives below output.it basically stored the object creation structure in col1 field

Id  col1
1   new Test.DataSample{ testVar=24,testVar=11}
2   new Test.DataSample{ testVar=26,testVar=15}
3   null
4   null
5   new Test.DataSample{ testVar=28,testVar=11}

I am trying to create a class and invoke Convert method of Test class by providing array of DataSample type object. the Data type objects are stored on col1 field as above .

Public class ImplementTest{

public void CallConvert(){
var inputs = new Test.DataSample[] { };
// get the data from DB in list
            List<object> InputList = new List<object>();
            using (SqlConnection con = new SqlConnection(conString))
            {
                using (SqlCommand cmd = new SqlCommand())
                {

                    cmd.CommandType = System.Data.CommandType.StoredProcedure;
                    cmd.CommandText = "dbo.ReadAll_Input";

                    con.Open();

                    using (SqlDataReader dr = cmd.ExecuteReader())
                    {
                        while (dr.Read())
                        {
                            InputList.Add(dr["col1"]);
                        }
                    }
                }
            }
             //remove null
            InputList.RemoveAll(x => x ==  DBNull.Value);

            //create an array of Test.DataSample type
             ??

          //call third party class
          var ourput = Test.Convert(inputs).ToArray();


}
}

How to pass all objects of InputList to inputs array so that it can passed to third party method Convert() which only accepts array of DataSample type ?

or is there a direct way we can create an array of DataSample type while fetching objects from stored procedure.

any hints on this please?

Thanks!