我在尝试使用 ac# 脚本任务作为 SSIS 2012 中数据流任务的数据源时遇到问题。我要运行一个更大的查询,但现在我只想证明这会工作,但到目前为止它不会。下面是代码,并且只返回一个字段,但是一旦到达 last name = reader.getstring() 的行,它就会抛出一个异常,指出行/列的数据不可用。我知道查询返回 10 行的事实,不知道发生了什么。我在此链接之后编写了代码:https ://msdn.microsoft.com/en-us/library/ms136060.aspx
有什么建议吗?
using System;
using System.Data;
using Microsoft.SqlServer.Dts.Pipeline.Wrapper;
using Microsoft.SqlServer.Dts.Runtime.Wrapper;
using System.Data.OleDb;
[Microsoft.SqlServer.Dts.Pipeline.SSISScriptComponentEntryPointAttribute]
public class ScriptMain : UserComponent
{
OleDbDataReader reader;
OleDbConnection myConnection;
OleDbCommand myCommand;
public override void PreExecute()
{
base.PreExecute();
string sConnectionString = "Provider=MSDAORA.1;User ID = USER;Password=PASS;Data Source=SERVER;persist security info = false";
// string oracleQuery = Variables.OracleSQL;
string oracleQuery = "select Name from Name_Table where rownum < 10";
myConnection = new OleDbConnection(sConnectionString);
myCommand = new OleDbCommand(oracleQuery, myConnection);
myConnection.Open();
reader = myCommand.ExecuteReader();
}
/// <summary>
/// This method is called after all the rows have passed through this component.
///
/// You can delete this method if you don't need to do anything here.
/// </summary>
public override void PostExecute()
{
base.PostExecute();
reader.Close();
/*
* Add your code here
*/
}
public override void CreateNewOutputRows()
{
Output0Buffer.AddRow();
Output0Buffer.Name = reader.GetString(0);
}
}