C# SqlDataAdapter 将 Decimal 列中的所有值归零

Question

I am using SqlDataAdapter to fill a DataSet from a SQLServer table. All of the columns are filled properly except the Transaction column which is a Decimal type in the database. These values all become 0.0.

The code:

using (SqlConnection dbconn = new SqlConnection (connection_string)) {
            SqlDataAdapter adapter = new SqlDataAdapter (query, dbconn);
            exposureSequence = new DataSet ();
            adapter.Fill (exposureSequence, "ExposureSequence");
        }

This code

            foreach(DataRow r in exposureSequence.Tables["ExposureSequence"].Rows){
            Console.WriteLine(r["TransactionAmount"] + ", ");
        }

prints

0.0000, 
0.0000, 
0.0000,
...

But if I do this:

using (IDataReader reader = dbcmd.ExecuteReader()) {
                    while(reader.Read()){
                        //int ActionClientID = (int) reader["ActionClientID"];
                        Decimal TransactionAmount = (Decimal) reader["TransactionAmount"];
                        Console.WriteLine(TransactionAmount);
                    }

My output is:

164.4950
164.4950
164.4950
...

Why is adapter.Fill turning the TransactionAmount values to 0.000?

Answer 1

I don't see a difference between the 2 versions of code you posted. You should receive the same results. If you execute the same query by using a dataReader or a dataAdapter the difference is how they execute and not the results you get. Do you use the same query for execution? If you do, I believe the problem maybe somewhere else (and not in the difference of the 2 versions).