從XML字串中提取某些部分

我在 C# 中有一個執行 httpclient 獲取請求的 Windows 表單。這是 XML 格式的回應

>  <Result><Success>true</Success><Token>MYTOKENHERE</Token><TokenExpirationDate null="1"
> /><UserName>********</UserName><PersonCode>442078</PersonCode><LoginStatusMessage>LoginOk</LoginStatusMessage></Result>

我想將文本框的文本設定為<Token></Token>標簽之間的內容

做到這一點的最佳方法是什么

謝謝

這是我當前的 Form1.cs 代碼

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net.Http;
using System.Xml.Serialization;

namespace EBS_Token_Form
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

     

        private void button1_Click(object sender, EventArgs e)
        {
            HttpClient Client = new HttpClient();
            Client.BaseAddress = new Uri("PRIVATE_URL");

            string Username = username.Text;
            string Password = password.Text;



            string CredentialsString = $"{Username}:{Password}";
            byte[] CredentialsStringByes = System.Text.Encoding.UTF8.GetBytes(CredentialsString);

            Client.DefaultRequestHeaders.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("basic", Convert.ToBase64String(CredentialsStringByes));

            try
            {
                var Response = Client.GetAsync("Rest/Authentication").Result;

                if (!Response.IsSuccessStatusCode)
                {
                    // Something went wrong, is error.
                    // Put a breakpoint on the line below and we can figure out why.
                    string x = "";
                }

                string ServerResponse = Response.Content.ReadAsStringAsync().Result;

              
            }

            catch (Exception ex)
            {
                return;
            }


        } 

如果我將文本框的值設定為ServerResponse它具有完整的 xml 檔案。我只需要提取 .

uj5u.com熱心網友回復：

通常我會為這樣的事情使用XmlSerializer，但如果你真的只需要這個值，你可能想嘗試XElement：

var root = XElement.Parse(yourResponseString);
var value = root.Element("Token")?.Value;

XElement 非常適合遍歷、讀取和操作 XML。

uj5u.com熱心網友回復：

XPath 適用于此，盡管有些人可能認為矯枉過正。XPath 運算式 /Result/Token/Text() 完全符合它的樣子。

using System.Xml;
using System.Xml.XPath;

string Incoming_XML = @"<Result><Success>true</Success><Token>MYTOKENHERE</Token><TokenExpirationDate null=""1"" /><UserName>********</UserName><PersonCode>442078</PersonCode><LoginStatusMessage>LoginOk</LoginStatusMessage></Result>";

XPathDocument xPathDoc = null;

using (StringReader sr = new StringReader(Incoming_XML))
{
    xPathDoc = new XPathDocument(sr);
    XPathNavigator xPathNav = xPathDoc.CreateNavigator();
    string Result = xPathNav.SelectSingleNode("/Result/Token/text()").Value;
    Console.WriteLine($"Token is: {Result}");
}

uj5u.com熱心網友回復：

下面的示例代碼可能不是最好的，但它很容易理解并且可以完成作業。

        // Define a regular expression pattern 
        string Regex_syntax = @"<Token>[\s\S]*?</Token>";

        
        Regex rx = new Regex(Regex_syntax,RegexOptions.Compiled | RegexOptions.IgnoreCase);


        // Define a RAW data string to process , in your case will be http response result
        string inputtext = @"<Result><Success>true</Success><Token>MYTOKENHERE</Token><TokenExpirationDate";


        // Find matches.
        MatchCollection matches = rx.Matches(inputtext);

        // clease the uneeded string 
        string cleanseString = matches[0].ToString().Replace(@"<Token>", "");
        cleanseString = cleanseString.Replace(@"</Token>", "");

        // This will print value in between the token tag
        Console.WriteLine("require output = "   cleanseString);

標籤：C＃ xml 表格

上一篇：找出資料框中的值是否增加了十位

下一篇：捕獲XML中的注釋文本