我正在尝试将缓冲区数据划分为excel文件的各个选项卡。因此，缓冲数据具有公司的雇员数据，其中一个字段/列是“城市”，我希望每个城市都有单独的选项卡，以及该城市中居住的雇员的雇员信息。因此，excel选项卡“波士顿”将让所有员工都住在波士顿。 “城市”列可以包含任意数量的城市，因此这是一个动态字段。
我要采取的方法是首先全部遍历“城市”（City）列中的值，然后将唯一值保存到数组中。如何在C＃中执行此操作？一旦获得唯一值，就再次遍历数据并将行保存到其相应的引用中。 This is the data that my buffer (source) has.
And the data I want to get is an excel file with employee data of each city
因此，我创建了一个脚本任务来满足我的要求。我的C＃代码的问题是它在第103行的代码dt.Load（cmd.ExecuteReader（））之后跳过了；并执行catch块。我已经研究了为什么会出现这种情况，但还没有得到具体的答案，我尝试通过设置断点并逐步解决它来进行故障排除，但没有任何东西使我了解问题所在。我是C＃的新手，所以任何指针都将不胜感激。如果有的话，我也会打开非C＃代码解析。这是C＃代码
#region Help: Introduction to the script task
/* The Script Task allows you to perform virtually any operation that can be accomplished in
* a .Net application within the context of an Integration Services control flow.
*
* Expand the other regions which have "Help" prefixes for examples of specific ways to use
* Integration Services features within this script task. */
#endregion
#region Namespaces
using System;
using System.Data;
using microsoft.SqlServer.Dts.Runtime;
using System.Windows.Forms;
using System.Data.OleDb;
using System.Data.SqlClient;
using System.IO;
#endregion
namespace ST_31ec630ee01447a8b688790e58f06464
{
[microsoft.SqlServer.Dts.Tasks.ScriptTask.SSISScriptTaskEntryPointAttribute]
public partial class ScriptMain : microsoft.SqlServer.Dts.Tasks.ScriptTask.VSTARTScriptObjectModelBase
{
#region Help: Using Integration Services variables and parameters in a script
/* To use a variable in this script,first ensure that the variable has been added to
* either the list contained in the ReadOnlyVariables property or the list contained in
* the ReadWriteVariables property of this script task,according to whether or not your
* code needs to write to the variable. To add the variable,save this script,close this instance of
* Visual Studio,and update the ReadOnlyVariables and
* ReadWriteVariables properties in the Script Transformation Editor window.
* To use a parameter in this script,follow the same steps. Parameters are always read-only.
*
* Example of reading from a variable:
* DateTime startTime = (DateTime) Dts.Variables["System::StartTime"].Value;
*
* Example of writing to a variable:
* Dts.Variables["User::myStringVariable"].Value = "new value";
*
* Example of reading from a package parameter:
* int batchId = (int) Dts.Variables["$Package::batchId"].Value;
*
* Example of reading from a project parameter:
* int batchId = (int) Dts.Variables["$Project::batchId"].Value;
*
* Example of reading from a sensitive project parameter:
* int batchId = (int) Dts.Variables["$Project::batchId"].GetSensitiveValue();
* */
#endregion
#region Help: Firing Integration Services events from a script
/* This script task can fire events for logging purposes.
*
* Example of firing an error event:
* Dts.Events.FireError(18,"Process Values","Bad value","",0);
*
* Example of firing an information event:
* Dts.Events.FireInformation(3,"Processing has started",ref fireAgain)
*
* Example of firing a warning event:
* Dts.Events.FireWarning(14,"No values received for input",0);
* */
#endregion
#region Help: Using Integration Services connection managers in a script
/* Some types of connection managers can be used in this script task. See the topic
* "Working with Connection Managers Programatically" for details.
*
* Example of using an ADO.Net connection manager:
* object rawConnection = Dts.Connections["Sales DB"].AcquireConnection(Dts.Transaction);
* SqlConnection myADONETConnection = (SqlConnection)rawConnection;
* //Use the connection in some code here,then release the connection
* Dts.Connections["Sales DB"].ReleaseConnection(rawConnection);
*
* Example of using a File connection manager
* object rawConnection = Dts.Connections["Prices.zip"].AcquireConnection(Dts.Transaction);
* string filePath = (string)rawConnection;
* //Use the connection in some code here,then release the connection
* Dts.Connections["Prices.zip"].ReleaseConnection(rawConnection);
* */
#endregion
public void Main()
{
try
{
string accountquery = Dts.Variables["User::account_query"].Value.ToString();
//USE ADO.NET Connection from SSIS Package to get data from table
SqlConnection myADONETConnection = new SqlConnection();
myADONETConnection = (SqlConnection)(Dts.Connections["ODSDEV"].AcquireConnection(Dts.Transaction) as SqlConnection);
//MessageBox.Show(myADONETConnection);
myADONETConnection.Open();
SqlCommand cmd = new SqlCommand(accountquery,myADONETConnection);
//MessageBox.Show(accountquery);
//Saving unique accounts into "dt" DataTable
DataTable dt = new DataTable();
dt.Load(cmd.ExecuteReader());
MessageBox.Show("hello");
myADONETConnection.Close();
//start for main for each,this loops through all trilogie logons
foreach (DataRow dt_row in dt.Rows)
{
string ColumnValue = "";
object[] array = dt_row.ItemArray;
ColumnValue = array[0].ToString();
//Load Data into DataTable from SQL ServerTable
string queryString = Dts.Variables["User::account_query"].Value.ToString() + ColumnValue + "'";
SqlDataAdapter adapter = new SqlDataAdapter(queryString,myADONETConnection);
DataSet ds = new DataSet();
adapter.Fill(ds);
//Get Header Columns
string TableColumns = "";
// Get the Column List from Data Table so can create Excel Sheet with Header
foreach (DataTable table in ds.Tables)
{
foreach (DataColumn column in table.Columns)
{
TableColumns += column + "],[";
}
}
// Replace most right comma from Columnlist
TableColumns = ("[" + TableColumns.Replace(","," Text,").TrimEnd(','));
TableColumns = TableColumns.Remove(TableColumns.Length - 2);
//MessageBox.Show(TableColumns);
//Use OLE DB Connection and Create Excel Sheet
OleDbConnection Excel_OLE_Con = new OleDbConnection();
string ExcelFileName = Dts.Variables["User::ExcelFileName"].Value.ToString();
string FolderPath = Dts.Variables["User::FolderPath"].Value.ToString();
//Construct ConnectionString for Excel
string connstring = "Provider=microsoft.ACE.OLEDB.12.0;" + "Data Source=" + FolderPath + ExcelFileName
+ ";" + "Extended Properties=\"Excel 12.0 Xml;HDR=YES;\"";
Excel_OLE_Con.ConnectionString = connstring;
Excel_OLE_Con.Open();
OleDbCommand Excel_OLE_Cmd = new OleDbCommand();
Excel_OLE_Cmd.Connection = Excel_OLE_Con;
Excel_OLE_Cmd.CommandText = "Create table [" + ColumnValue + "] (" + TableColumns + ")";
Excel_OLE_Cmd.ExecuteNonQuery();
//Write Data to Excel Sheet from DataTable dynamically
foreach (DataTable table in ds.Tables)
{
String sqlCommandInsert = "";
String sqlCommandValue = "";
foreach (DataColumn dataColumn in table.Columns)
{
sqlCommandValue += dataColumn + "],[";
}
sqlCommandValue = "[" + sqlCommandValue.TrimEnd(',');
sqlCommandValue = sqlCommandValue.Remove(sqlCommandValue.Length - 2);
sqlCommandInsert = "INSERT into [" + ColumnValue + "] (" + sqlCommandValue + ") VALUES(";
int columnCount = table.Columns.Count;
foreach (DataRow row in table.Rows)
{
string columnvalues = "";
for (int i = 0; i < columnCount; i++)
{
int index = table.Rows.IndexOf(row);
columnvalues += "'" + table.Rows[index].ItemArray[i] + "',";
}
columnvalues = columnvalues.TrimEnd(',');
var command = sqlCommandInsert + columnvalues + ")";
Excel_OLE_Cmd.CommandText = command;
Excel_OLE_Cmd.ExecuteNonQuery();
}
}
Excel_OLE_Con.Close();
}//end of main for each
Dts.TaskResult = (int)ScriptResults.Success;
}//end of try block
catch (Exception badscript)
{
MessageBox.Show("something messed up!");
}
}
#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
}
}