Filling dataset with dataadapter with row limit

Question

I need to modify the following code so that the number of rows are limited.

// create the connection
OracleConnection conn = new OracleConnection("Data Source=oracledb;
    User Id=UserID;Password=Password;");

// create the command for the stored procedure
OracleCommand cmd = new OracleCommand();
cmd.Connection = conn;
cmd.CommandText = "SELECT_JOB_HISTORY.GetJobHistoryByEmployeeId";
cmd.CommandType = CommandType.StoredProcedure;

// add the parameters for the stored procedure including the REF CURSOR
// to retrieve the result set
cmd.Parameters.Add("p_employee_id", OracleType.Number).Value = 101;
cmd.Parameters.Add("cur_JobHistory", OracleType.Cursor).Direction =
    ParameterDirection.Output;

// createt the DataAdapter from the command and use it to fill the
// DataSet
OracleDataAdapter da = new OracleDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);//Here is where I need to limit the rows

I know there is fill method which takes a maximum count.

public int Fill( DataSet dataSet, int startRecord, int maxRecords, string srcTable )

However, I don't know what should be passed to srcTable. My stored proc has one REF_CURSOR (OUT TYPES.REF_CURSOR).

Any help is much appreciated.

Answer 1

The srcTable parameter is the name of the DataTable in DataSet object.

EDIT:

The DataSet object automatically adds a table when you call Fill if you have not explicitly created one. The Default name is "Table". I do not believe the DataSet object cares about what type of data it is being filled with. It still creates the DataTable.

Before you call Fill() on your DataAdapter. Add an empty table to the DataSet with a name so you are able to access it during the Fill() method:

ds.Tables.Add("myTableName");

Then call the proper overloaded Fill() method like so:

da.Fill(ds, 1, 1000, "myTableName");

Or if you just use the default name of the table, or are unsure of the name of the table you created (doubtful):

da.Fill(ds, 1, 1000, ds.Tables[0].TableName);

Spcifically using your example it should look like this:

OracleDataAdapter da = new OracleDataAdapter(cmd);
DataSet ds = new DataSet();
ds.Tables.Add();
da.Fill(ds, 1, maxRowCount, ds.Tables[0].TableName);//Here is where I need to limit the rows