c# - 使用C#从完整结果集变量中获取数据到脚本任务中

我需要使用脚本任务将数据从SQL任务中的数据获取到DataTable对象，以生成电子邮件。但是，当我尝试使用OLEDB适配器填充任务填充数据时，会生成错误:



截屏



如上，

public void Main()
{
    // TODO: Add your code here
    DataTable dt = new DataTable();
    String message = "";
    OleDbDataAdapter adapter = new OleDbDataAdapter();

    if (Dts.Variables.Contains("onErrorList") == true)
    {
        try
        {
            try
            {
                adapter.Fill(dt, Dts.Variables["onErrorList"].Value);
            } catch (Exception e)
            {
                MessageBox.Show(e.Message);
            }

            foreach (DataRow row in dt.Rows)
            {
                message = message + "\n" + "Error Time : " + row["message_time"] + "\n" + "Execution Path : " + row["executionpath"] + "\n" + "Error : " + row["MESSAGE"];
            }
        }
        catch (Exception e)
        {
            MessageBox.Show(e.Message);
        }
    }

    message = Dts.Variables["executionMessage"].Value + "\n" + message;


    try {
        sendMail("[e-mail]", "Error in  ETL ", message);
        Dts.TaskResult = (int)ScriptResults.Success;
    }
    catch (Exception e)
    {

        MessageBox.Show(e.Message, "Mail Sending Failed");
        Dts.TaskResult = (int)ScriptResults.Failure;
    }


}

#region ScriptResults declaration
/// <summary>
/// This enum provides a convenient shorthand within the scope of this class for setting the
/// result of the script.
///
/// This code was generated automatically.
/// </summary>
enum ScriptResults
{
    Success = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Success,
    Failure = Microsoft.SqlServer.Dts.Runtime.DTSExecResult.Failure
};
#endregion

该行是生成错误的地方:

adapter.Fill(dt, Dts.Variables["onErrorList"].Value);

和我用来获取值的SQL代码

    SELECT  message_time,CAST(execution_path AS NVARCHAR(100)) AS executionpath , MESSAGE
FROM   (
       SELECT  em.*
       FROM    SSISDB.catalog.event_messages AS em
       WHERE   em.operation_id = (SELECT MAX(execution_id) FROM SSISDB.catalog.executions)
          -- AND event_name NOT LIKE '%Validate%'
       )q
WHERE   event_name = 'OnError'
ORDER BY message_time DESC

结果集到变量的映射


变量类型


请帮我。

最佳答案

我这样做是为了将结果集从SSIS变量导入到数据表中，以便以后在我的代码中使用。这就是我的做法。

您的SSIS变量必须是对象数据类型。如果不是，则需要先使用它。

然后，您使用C#进行此操作以获取数据并将其转换为如下所示的适配器(而不是像您尝试的那样直接转换为适配器):

// import SSIS variable of object type
Object OBJDataTableValidFieldListFull = Dts.Variables["User::SSISVariableObject"].Value;

// create datatable variable and dataadpapter
DataTable dtValidFieldListFull = new DataTable();
OleDbDataAdapter dataAdapter = new OleDbDataAdapter();

// fill datatable from variable passed from SSIS Object type
dataAdapter.Fill(dtValidFieldListFull, OBJDataTableValidFieldListFull);