C# 使用ADOMD XMLReader从SSAS多维数据集获取数据

我有一个多维数据集，我正在尝试使用以下代码检索数据。我不知道查询将返回多少列和行我只想读取每行上每列的值。

void OutputDataWithXML()
        {
            //Open a connection to the local server.
            AdomdConnection conn = new AdomdConnection("Data Source=localhost");
            conn.Open();

            //Create a command to retrieve the data.
            AdomdCommand cmd = new AdomdCommand(@"WITH MEMBER [Measures].[FreightCostPerOrder] AS 
[Measures].[Reseller Freight Cost]/[Measures].[Reseller Order Quantity],  
FORMAT_STRING = 'Currency'

SELECT [Geography].[Geography].[Country].&[United States].Children ON ROWS, 
[Date].[Calendar].[Calendar Year] ON COLUMNS
FROM [Adventure Works]
WHERE [Measures].[FreightCostPerOrder]", conn);

            //Execute the command, retrieving an XmlReader.
            System.Xml.XmlReader reader = cmd.ExecuteXmlReader();

            **// How to get the values form each column here ????
    // I just want to read value of each column going over each row**
            Console.WriteLine(reader.ReadOuterXml());

            //Close the reader, then the connection
            reader.Close();
            conn.Close();

            //Await user input.
            Console.ReadLine();
        }

下面的链接说，从SSAS多维数据集中检索数据的最快方法是XMLReader

---

拥有XmlReader后，您可能需要一个单元集来读取数据和元数据

看 在“在断开连接的状态下检索数据”一节中

字符串演示DisconnectedCellSet（）{
//创建一个新的字符串生成器来存储结果
System.Text.StringBuilder结果=新建System.Text.StringBuilder（）；
//连接到本地服务器
使用（AdomdConnection conn=new AdomdConnection（“数据源=localhost；”））
{
conn.Open（）；
//使用此连接创建命令
AdomdCommand cmd=conn.CreateCommand（）；
cmd.CommandText=@”
成员[措施][FreightCostPerOrder]为
[措施].[经销商运费]/[措施].[经销商订单数量]，
格式\字符串='货币'
挑选
【地理】【地理】【国家】、【美国】。孩子们坐在一排，
列上的[日期][日历][日历年]
来自[冒险作品]
其中[措施][运费订单]”；
//执行查询，返回一个XmlReader
System.Xml.XmlReader x=cmd.ExecuteXmlReader（）；
//此时，XmlReader可以存储在磁盘上，
//传输、修改、缓存或以其他方式操纵
//使用指定的XML加载单元集
CellSet cs=CellSet.LoadXml（x）；
//现在XmlReader已经完成了读取
//我们可以关闭它和连接，而
//单元集可以继续使用。
x、 Close（）；
康涅狄格州关闭（）；
//从第一个轴输出列标题
//请注意，此过程假定每列存在一个成员。
结果。追加（“\t”）；
TupleCollection tuplesOnColumns=cs.Axes[0].Set.Tuples；
foreach（tuplesOnColumns中的Tuple列）
{
result.Append（column.Members[0]。标题+“\t”）；
}
result.AppendLine（）；
//从第二个轴和单元格数据输出行标题
//请注意，此过程假定为二维单元集
TupleCollection tuplesOnRows=cs.Axes[1].Set.Tuples；
for（int row=0；row

您已从中复制了此代码。你设置好数据库了吗？

reader.ReadOuterXml（）返回什么？我想知道在不知道查询将返回多少列的情况下如何检索数据。是的，那么reader.ReadOuterXml（）返回什么？
string DemonstrateDisconnectedCellset() {
//Create a new string builder to store the results
System.Text.StringBuilder result = new System.Text.StringBuilder();

//Connect to the local server
using (AdomdConnection conn = new AdomdConnection("Data Source=localhost;"))
{
    conn.Open();

    //Create a command, using this connection
    AdomdCommand cmd = conn.CreateCommand();
    cmd.CommandText = @"
                  WITH MEMBER [Measures].[FreightCostPerOrder] AS 
                        [Measures].[Reseller Freight Cost]/[Measures].[Reseller Order Quantity],  
                        FORMAT_STRING = 'Currency'
                  SELECT 
                        [Geography].[Geography].[Country].&[United States].Children ON ROWS, 
                        [Date].[Calendar].[Calendar Year] ON COLUMNS
                  FROM [Adventure Works]
                  WHERE [Measures].[FreightCostPerOrder]";


    //Execute the query, returning an XmlReader
    System.Xml.XmlReader x = cmd.ExecuteXmlReader();

    //At this point, the XmlReader could be stored on disk,
    //transmitted, modified, cached, or otherwise manipulated

    //Load the CellSet with the specified XML
    CellSet cs = CellSet.LoadXml(x);

    //Now that the XmlReader has finished being read
    //we can close it and the connection, while the
    //CellSet can continue being used.
    x.Close();
    conn.Close();

    //Output the column captions from the first axis
    //Note that this procedure assumes a single member exists per column.
    result.Append("\t");
    TupleCollection tuplesOnColumns = cs.Axes[0].Set.Tuples;
    foreach (Tuple column in tuplesOnColumns)
    {
        result.Append(column.Members[0].Caption + "\t");
    }
    result.AppendLine();

    //Output the row captions from the second axis and cell data
    //Note that this procedure assumes a two-dimensional cellset
    TupleCollection tuplesOnRows = cs.Axes[1].Set.Tuples;
    for (int row = 0; row < tuplesOnRows.Count; row++)
    {
        result.Append(tuplesOnRows[row].Members[0].Caption + "\t");
        for (int col = 0; col < tuplesOnColumns.Count; col++)
        {
            result.Append(cs.Cells[col, row].FormattedValue + "\t");
        }
        result.AppendLine();
    }

    return result.ToString();
} // using connection
}