asp.net使用DataSet的ReadXml读取XML文件及Stream流的方法

本文实例讲述了asp.net使用dataset的readxml读取xml文件及stream流的方法。分享给大家供大家参考，具体如下：

string strxml = "<xml><m><a>1</a><b>2</b></m><m><a>11</a><b>22</b></m><m><a>111</a><b>222</b></m></xml>";
dataset ds = new dataset();
stream stream = new memorystream(encoding.default.getbytes(strxml));
ds.readxml(stream);
gridview1.datasource = ds;
gridview1.databind();

protected void page_load(object sender, eventargs e)
{
  if (!ispostback)
  {
    dataset ds = new dataset();
    textreader reader = new stringreader(@"
          <music>
           <song>
            <artist>the chi-lites</artist>
            <genre>soul</genre>
            <album>a lonely man</album>
            <year>1972</year>
           </song>
           <song>
            <artist>babyface</artist>
            <genre>r&b</genre>
            <album>unknown</album>
            <year></year>
           </song>
           <song>
            <artist>babyface</artist>
            <genre>r&b</genre>
            <album>the essential babyface</album>
            <year>2001</year>
           </song>
           <song>
            <artist>babyface</artist>
            <genre>r&b</genre>
            <album>grown and sexy</album>
            <year>2005</year>
           </song>
           <song>
            <artist>maria arredondo</artist>
            <genre>pop</genre>
            <album>not going under</album>
            <year>2004</year>
           </song>
           <song>
            <artist>leona lewis</artist>
            <genre>pop</genre>
            <album>unknown</album>
            <year>2008</year>
           </song>
           <song>
            <artist>usher</artist>
            <genre>r&b</genre>
            <album>usher</album>
            <year>2008</year>
           </song>
           <song>
            <artist>christina aguilera</artist>
            <genre>blues</genre>
            <album>back to basics</album>
            <year>2004</year>
           </song>
           <song>
            <artist>sting</artist>
            <genre>pop</genre>
            <album>shape of my heart</album>
            <year></year>
           </song>
          </music>
          ");
    //读取xml字符串 用来接收webservice返回数据
    ds.readxml(reader, xmlreadmode.auto);
    //生成xml文件
    //ds.writexml(server.mappath("xml/song_bak.xml"));
    gridview1.datasource = ds;
    gridview1.databind();
  }
}

#region 接口返回的xml转换成dataset
/// <summary>
/// 返回的xml转换成dataset
/// </summary>
/// <param name="text">xml字符</param>
/// <returns></returns>
private dataset getdataset(string text)
{
  try
  {
    xmltextreader reader = new xmltextreader(new stringreader(text));
    reader.whitespacehandling = whitespacehandling.none;
    dataset ds = new dataset();
    ds.readxml(reader);
    reader.close();
    ds.dispose();
    return ds;
  }
  catch
  {
    return null;
  }
}
#endregion
#region 后台提交数据且获取接口返回的数据
/// <summary>
/// 后台提交数据且获取接口返回的数据
/// </summary>
/// <param name="relativepath">地址</param>
/// <returns></returns>
public static string getrequeststring(string relativepath)
{
  string requesturl = relativepath;
  try
  {
    // 创建一个http请求
    httpwebrequest request = (system.net.httpwebrequest)webrequest.create(requesturl);
    request.method = "get";
    streamreader jsonstream = new streamreader(request.getresponse().getresponsestream());
    string jsonobject = jsonstream.readtoend();
    return jsonobject;
  }
  catch
  {
    return string.empty;
  }
}
#endregion

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