title: Find Xml attribute by value, and change its other value
body: <p>So, below I made a code which lists my 2 items in comboBox1 by its name(Selena and Maria) on load, and when I select one of those, lets say Maria, and click on button1, it populates my 3 textboxes with Maria's name,usn and pawd attribute values, and it looks like:
  Display name: Maria
  Username: mary26
  Password: d4e5r</p>
  
  <p>and I am happy with that part of code, because it serves my purpose.</p>
  
  <p><strong>But I am struggling with part of code which I am trying to figure out.
  I created a button2, and I would like that, when I change values of Display name, Username or Password textboxes, and I click save, that it saves to right location in xml file, to Maria, and does not save it to Selena or something else.</strong></p>
  
  <p>I have tried browsing for a week now, and multiple solutions, and I couldn't find any.</p>
  
  <p>att.xml:</p>
  
  <pre><code>&lt;database&gt;
  &lt;item name="Selena" usn="sele22" pawd="fed47a"&gt;&lt;/item&gt;
  &lt;item name="Maria" usn="mary26" pawd="d4e5r"&gt;&lt;/item&gt;
  &lt;database&gt;
  </code></pre>
  
  <p>myproject:</p>
  
  <pre><code>private void Form3_Load(object sender, EventArgs e)
          {
              comboBox1.Items.Clear();
              XmlTextReader reader = new XmlTextReader("att.xml");
              while (reader.Read())
              {
                  if (reader.NodeType == XmlNodeType.Element)
                  {
                      if (reader.Name == "item")
                      {
                          comboBox1.Items.Add(reader.GetAttribute("name"));
                      }
                  }
              }
  
              reader.Close();
          }
  
          private void button1_Click(object sender, EventArgs e)
          {
              string secit = comboBox1.SelectedItem as string;
              XmlTextReader lola = new XmlTextReader("att.xml");
              while (lola.Read())
              {
                  if (lola.NodeType == XmlNodeType.Element)
                  {
                      string poop = lola.GetAttribute("name"); 
                      if (poop == secit) 
                      {
                          string username = lola.GetAttribute("usn"); 
                          string password = lola.GetAttribute("pawd");
                          string dispname = lola.GetAttribute("name");
  
                          textBox1.Text = dispname;
                          textBox2.Text = username;
                          textBox3.Text = password;
  
                      }
                  }
              }
  
              lola.Close();
          }
  </code></pre>