我如何阅读这个XML部分

本文关键字:XML 部分 何阅读 | 更新日期: 2023-09-27 18:09:46

我有一个在线XML文件的链接,我在我的应用程序中阅读。这是XML的一部分:

<ActueleVertrekTijden>
 <VertrekkendeTrein>
  <RitNummer>4085</RitNummer>
  <VertrekTijd>2014-06-13T22:00:00+0200</VertrekTijd>
  <EindBestemming>Rotterdam Centraal</EindBestemming>
  <TreinSoort>Sprinter</TreinSoort>
  <RouteTekst>A'dam Sloterdijk, Amsterdam C., Duivendrecht</RouteTekst> 
  <Vervoerder>NS</Vervoerder>
  <VertrekSpoor wijziging="false">4</VertrekSpoor>
  <Opmerkingen>
    <Opmerking> Rijdt vandaag niet</Opmerking>
  </Opmerkingen>
 </VertrekkendeTrein>
</ActueleVertrekTijden>

我想阅读"Opmerkingen"中列出的"Opmerking",并站在"VertrekkendeTrein"中:

<Opmerkingen>
    <Opmerking> Rijdt vandaag niet</Opmerking>
</Opmerkingen>

问题是它并不总是存在的,这要视情况而定。

我可以读取其他部分,如"RitNummer"answers"Vervoerder",我使用以下代码来完成:

string urlo = "THEWEBSITE";
            string resultje = HttpGeto(urlo);
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(resultje);
XmlNodeList nodeList = xmlDoc.SelectNodes("ActueleVertrekTijden/VertrekkendeTrein/*");

       foreach (XmlNode nodelist2 in nodeList)
           {//14  101517
            //int i = 0;//if (i == 0) { i++; }
               if (i < 1) //1
               {
                 switch (nodelist2.Name)
                  {
                    case "VertrekTijd": string kuttijd1 = (nodelist2.InnerText);
                    var res1 = Regex.Match(kuttijd1, @"'d{1,2}:'d{1,2}").Value;
                    lblv1.Text = Convert.ToString(res1); break;
                    case "VertrekVertragingTekst": var tobiasisnietvantexel1 = (nodelist2.InnerText); if (tobiasisnietvantexel1 == null) {} else{ ververt1.Text = tobiasisnietvantexel1; ververt1.Visible = true; vertpic1.Visible = true; logo1.Top -= 9; lblts1.Top -= 9; } break;
                    case "EindBestemming": string vertrek1 = (nodelist2.InnerText); if (vertrek1 == "Uitgeest") { lblvia1.Text = "Krommenie-Ass"; } lblbs1.Text = vertrek1; break;
                    case "TreinSoort": lblts1.Text = (nodelist2.InnerText); break;
                    case "RouteTekst": lblvia1.Text = (nodelist2.InnerText); break;
                    case "VertrekSpoor": lbls1.Text = (nodelist2.InnerText); i++;  break;

                   }

                }
           }

我试了很多像:

case "Opmerking": var texeliseeneiland1 

case "Opmerkingen/Opmerking": var texeliseeneiland1 

有什么方法可以让我"上班"吗?

谢谢!

我如何阅读这个XML部分

最简单但不是最优雅的解决方案是从"Opmerkingen"节点列表中提取子节点:

case "Opmerkingen":
{
    XmlNodeList nodeListOp = nodelist2.SelectNodes("Opmerking");
    foreach (XmlNode node in nodeListOp)
    {
        if (node.Name == "Opmerking")
        {
            // your "Opmerking" stuff here
        }
    }
    break;
}

您可以尝试将XML节点列表/集转换为可查询的数据结构,并使用System.Linq查看它是否包含和Opmerking。虽然这是我的偏好,因为我一直在做很多数据库查询。

在您的情况下,对于您的switch语句和许多情况,您可以尝试以下操作:

在"Opmerkingen"的情况下,嵌套另一个情况,看看它是否有一个子节点"Opmerking",然后对该"Opmerking"节点做一些事情。或者让case "Opmerkingen"调用一个函数对"opmerking"节点做一些事情。

编辑示例:

   foreach (XmlNode nodelist2 in nodeList)
       {//14  101517
        //int i = 0;//if (i == 0) { i++; }
           if (i < 1) //1
           {
             switch (nodelist2.Name)
              {
                case "VertrekTijd": string kuttijd1 = (nodelist2.InnerText);
                var res1 = Regex.Match(kuttijd1, @"'d{1,2}:'d{1,2}").Value;
                lblv1.Text = Convert.ToString(res1); break;
                case "VertrekVertragingTekst": var tobiasisnietvantexel1 = (nodelist2.InnerText); if (tobiasisnietvantexel1 == null) {} else{ ververt1.Text = tobiasisnietvantexel1; ververt1.Visible = true; vertpic1.Visible = true; logo1.Top -= 9; lblts1.Top -= 9; } break;
                case "EindBestemming": string vertrek1 = (nodelist2.InnerText); if (vertrek1 == "Uitgeest") { lblvia1.Text = "Krommenie-Ass"; } lblbs1.Text = vertrek1; break;
                case "TreinSoort": lblts1.Text = (nodelist2.InnerText); break;
                case "RouteTekst": lblvia1.Text = (nodelist2.InnerText); break;
                case "VertrekSpoor": lbls1.Text = (nodelist2.InnerText); i++;  break;
                //Here's the case you might try adding
                case "Opmerkingen": var SomeVar = OpmerkingenMethod(nodelist2); break; 
                //or do something else that you want to do, instead of breaking,
                //I do not know what you want to do with Opmerking when you get it
                // so I just had the function output into another variable.
               }

            }
       }

这里有一个方法的例子,你可能会在Opmerkingen的情况下使用,这样你就可以进入Opmerking并使用它做一些事情。还是那句话,我不知道你到底想做什么

private string OpmerkingenMethod(XmlNode node)
{
     //Do something with XmlNode Opmerkingen
     var something = node.Name  //Or whatever you want from Opmerkingen node
     return something
}

这可能更符合你想要的,我还没有测试代码,这只是为了演示你想要的代码。

private string OpmerkingenMethod(XmlNode node)
{
     //Do something with XmlNode Opmerkingen
     var child = node.FistChild;
     if(child.name == "Opmerking") 
     {
          return child.InnerText // or whatever you want
     }
     else { return "" ; }
}

你可以在Opmerkingen的情况下调用这个方法并检查输出,如果它是你想要的,break switch语句,如果它不是你想要的(因为没有opmerking或其他东西),你可以continue到下一个情况,或者break去nodelist的下一个节点。同样,关键是在看到Opmerkingen时调用该方法这样就可以获得Opmerkingen

中的节点或值