dbreader クラス : IsDBNull(string)メソッド

connection cnn = new connection("Data Source=c:\somedirectory\somedatabase.sqlite3;Version=3;");

cnn.Open();

command cmm = new command("select * from sometable where id < 100;", cnn);

dbreader dbr = cmm.Reader(); // Command execution. Returns multi-line results.

while(dbr.Read())

bool isnull = dbr.IsDBNull("Appropriate column name");

endwhile

dbr.Release();

cmm.Release();

cnn.Close();

cnn.Release();