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我正在尝试为 xml 配置文件编写一个编辑器。我将 xml 文件绑定到列表视图并选择一个元素，然后单击编辑允许您编辑一个元素。当用户单击保存时，会调用一个委托来更新 xml 文档中的元素。我尝试以各种方式进行更新，包括 appendnode、prependnode、insertafter 和 replace child。我已经让它们全部工作，没有任何编译时间或运行时错误，但它们没有更新 xmldataprovider 或列表视图。这可能只是我缺少的一些简单的东西，但我无法弄清楚它是什么。有人可以帮忙吗？

谢谢，布赖恩

如果有帮助，这是我的主要表单的源代码（带有列表视图的那个）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Xml;
using System.IO;

namespace g2config
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>

    public partial class MainWindow : Window
    {
        public XmlDataProvider dp;
        string cfgfile;
        public managecmpnts manage_components;
        public delegate void managecmpnts(int id, XmlElement component);


        public MainWindow()
        {
            InitializeComponent();
            dp = this.FindResource("configfile") as XmlDataProvider;

            cfgfile = "C:\\Users\\briansvgs\\Desktop\\g2config\\g2config\\bin\\Debug\\g2config.pxml";

            if(Environment.GetCommandLineArgs().Count() > 1)
            {
                string path = Environment.GetCommandLineArgs().ElementAt(1);
                //MessageBox.Show("Path: " + path);
                cfgfile = path;
            }

            if (File.Exists(cfgfile))
            {
                dp.Source = new Uri(cfgfile, UriKind.RelativeOrAbsolute);
            }
            else
            {
                MessageBox.Show("config file not found");
            }

            this.Title = this.Title + " (" + cfgfile + ") ";
        }

        public void browsedir( object sender, EventArgs e)
        {
              System.Windows.Forms.OpenFileDialog ofd = new System.Windows.Forms.OpenFileDialog();
            ofd.Filter = "PXML Files (*.pxml)|*.pxml"; ;

            //http://www.kirupa.com/net/using_open_file_dialog_pg4.htm
            if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK) //how to browse dirs instead of files?????
            {
                 startpath.Text = ofd.FileName;
            }
        }

        public void newcomponent(object sender, RoutedEventArgs e)
        {            
            componentsettings new_cmpnt = new componentsettings();
            new_cmpnt.Title = "Add Component";
            new_cmpnt.ShowDialog();         
        }

        public void editcomponent(object sender, RoutedEventArgs e)
        {
            int selected = components.SelectedIndex;
            XmlElement current = (XmlElement)components.Items.CurrentItem;
            componentsettings edit_cmpnt = new componentsettings(current);
            edit_cmpnt.cmpnt_mgr.manage_components += new manager.mngcmpnts(test);
            edit_cmpnt.Title = "Edit Component";
            edit_cmpnt.ShowDialog();
        }

        private void browsedir(object sender, RoutedEventArgs e)
        {
            System.Windows.Forms.FolderBrowserDialog directory;
            directory = new System.Windows.Forms.FolderBrowserDialog();
            directory.Description = "Please select the folder containing your g2 configuration (pxml) files. Default is C:\\Program Files\\Exacom, Inc.";
            directory.ShowDialog();
            startpath.Text = directory.SelectedPath;
        }

        private void save(object sender, RoutedEventArgs e)
         {
             MessageBox.Show(dp.Source.ToString());

            if(File.Exists(cfgfile + ".old"))
            {
                File.Delete(cfgfile + ".old");
            }

             File.Move(cfgfile, cfgfile + ".old");
             dp.Document.Save(cfgfile);
         }

        private void remove(object sender, RoutedEventArgs e)
        {
            XmlNode component = dp.Document.DocumentElement["Components"].ChildNodes[components.SelectedIndex];
            dp.Document.DocumentElement["Components"].RemoveChild(component);
        }

        private void temp(object sender, RoutedEventArgs e)
        {
            MessageBox.Show(dp.Document.DocumentElement["Components"].ChildNodes[components.SelectedIndex].InnerText.ToString()); //will this give me trouble????? Probably not since it's my config, but...
        }
        private void test(int id, XmlElement testelement)
        {

            //dp.Document.DocumentElement["Components"].ChildNodes[id] = testelement;
            //XmlNode testnode = dp.Document.DocumentElement["Components"].ChildNodes[id + 1];
            //XmlNode testnode = testelement;
            MessageBox.Show(testelement.OuterXml.ToString());
            //dp.Document.DocumentElement["Components"].InsertAfter(dp.Document.DocumentElement["Components"].ChildNodes[0], testelement);
            //dp.Document.DocumentElement["Components"].RemoveChild(testelement);
            //dp.Document.DocumentElement["Components"].ReplaceChild(testnode, dp.Document.DocumentElement["Components"].ChildNodes[id]);
            dp.Document.DocumentElement["Components"].PrependChild(testelement);

            //dp.Document.NodeChanged();

            //dp.Document.DocumentElement["Components"].CloneNode(true);
            dp.Document.DocumentElement["Components"].AppendChild(testelement);
            //dp.Document.
            //MessageBox.Show(dp.Document.OuterXml.ToString());
            //MessageBox.Show(dp.Document.DocumentElement["Components"].FirstChild.AppendChild(testelement).OuterXml.ToString());
        }


    }
}
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2 回答 2

1

JMSA。感谢您的建议。我今天正在玩它，我找到了解决方案。这有点混乱，但它有效。我复制当前节点之一，然后清除所有值。如果有人感兴趣，这是代码。

private void add(object sender, RoutedEventArgs e)
{
    System.Xml.XmlNode test = configfile.Document.DocumentElement["Components"].FirstChild;
    System.Xml.XmlNode testclone = test.Clone();
    for (int i = 0; i < testclone.ChildNodes.Count; i++)
    {
        testclone.ChildNodes[i].RemoveAll();
    }

    configfile.Document.DocumentElement["Components"].AppendChild(testclone);
    components.SelectedItem = components.Items.Count + 1;
}
于 2010-01-01T06:42:36.123 回答
0

我的建议是通过使用复合模式为每个元素创建一个类，在类中延迟加载 XML 文档并根据需要执行操作。然后再次保存。不过还是蛮多的。

于 2009-12-31T10:20:59.423 回答