我有一个 Xml 文件。其格式如下:

ControlType > Content > LocationX > LocationY > ForeColor/LinkColor > Int > Int > Int > Int

文件示例:

<?xml version="1.0" encoding="utf-8"?>
<cs>
  <Label Content="Double-click to edit." LocationX="583" LocationY="254" A="255" R="255" G="255" B="255" />
  <LinkLabel Content="Double-click to edit." LocationX="613" LocationY="251" A="255" R="0" G="0" B="0" />
</cs>

背景:生成一个Xml文件并保存在磁盘上。当用户将 Xml 文档加载到我的应用程序中时，我的应用程序将读取 Xml 文件。对于文档中的每个控件，它将检索其属性，如下所示:

foreach(Control control in XmlFile)
{
     // get control type
     // get control content
     // get LocationX
     // get LocationY
     // get Color
     // get Int
     // get Int
     // get Int
     // get Int

     // Do something with retrieved data.
}

这是我已经拥有的:

OpenFileDialog o = new OpenFileDialog();

o.Filter =
    "T Multimedia Format (*.mf)|*.mf|" +
    "Word Document (*.docx)|*.docx|" +
    "PDF Document (*.pdf)|*.pdf|" +
    "Text FIle (*.txt)|*.txt";
o.Title = "T 11 - Open Document";

using (o)
{
    if (o.ShowDialog() == DialogResult.OK)
    {
        XDocument xdc = XDocument.Load(o.FileName);

        var cs = xdc.Elements("cs");
        foreach (var im in cs)
        {
            if (im.Name == "Label")
            {
                Label label = new Label();
                label.MouseClick += new MouseEventHandler(label_MouseClick);
                label.MouseDown += new MouseEventHandler(label_MouseDown);
                label.MouseMove += new MouseEventHandler(label_MouseMove);
                label.MouseUp += new MouseEventHandler(label_MouseUp);
                label.MouseDoubleClick += new MouseEventHandler(label_MouseDoubleClick);

                label.Text = im.Attribute("Content").Value;

                label.Location = new Point(
                    Convert.ToInt32(im.Attribute("LocationX").Value),
                    Convert.ToInt32(im.Attribute("LocationY").Value));

                label.BackColor = Color.Transparent;
                label.ForeColor = Color.FromArgb(
                    Convert.ToInt32(im.Attribute("A").Value),
                    Convert.ToInt32(im.Attribute("R").Value),
                    Convert.ToInt32(im.Attribute("G").Value),
                    Convert.ToInt32(im.Attribute("B").Value));

                label.AutoSize = true;
                Canvas.Controls.Add(label);

                label.BringToFront();
            }
            else if (im.Name == "LinkLabel")
            {
                LinkLabel link = new LinkLabel();
                link.MouseClick += new MouseEventHandler(link_MouseClick);
                link.MouseDown += new MouseEventHandler(link_MouseDown);
                link.MouseMove += new MouseEventHandler(link_MouseMove);
                link.MouseUp += new MouseEventHandler(link_MouseUp);
                link.MouseDoubleClick += new MouseEventHandler(link_MouseDoubleClick);

                link.Text = im.Attribute("Content").Value;

                link.Location = new Point(
                    Convert.ToInt32(im.Attribute("LocationX").Value),
                    Convert.ToInt32(im.Attribute("LocationY").Value));

                link.BackColor = Color.Transparent;
                link.LinkColor = Color.FromArgb(
                    Convert.ToInt32(im.Attribute("A").Value),
                    Convert.ToInt32(im.Attribute("R").Value),
                    Convert.ToInt32(im.Attribute("G").Value),
                    Convert.ToInt32(im.Attribute("B").Value));

                link.AutoSize = true;
                Canvas.Controls.Add(link);

                link.BringToFront();
            }
        }
    }
}

... 上面的代码产生零错误。但是，它就是行不通。窗体上未显示任何控件。有谁知道为什么上面的代码不起作用，我怎样才能让它起作用？

感谢所有帮助，谢谢

贝尔

最佳答案

我建议您使用更通用的方法:

private void Form1_Load(object sender, EventArgs e)
{
    foreach (var controlTag in XDocument.Load("settings.xml").Root.Elements())
    {
        var controlType = Type.GetType(string.Format("System.Windows.Forms.{0}, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089", controlTag.Name.LocalName), false);
        if (controlType == null || !typeof(Control).IsAssignableFrom(controlType))
        {
            continue;
        }
        var control = (Control)Activator.CreateInstance(controlType);
        control.Text = controlTag.Attribute("Content").Value;
        control.Location = new Point(
            int.Parse(controlTag.Attribute("LocationX").Value),
            int.Parse(controlTag.Attribute("LocationY").Value)
        );
        control.BackColor = Color.Transparent;

        control.MouseClick += mouseClick;
        control.MouseDown += mouseDown;
        control.MouseMove += mouseMove;
        control.MouseUp += mouseUp;
        control.MouseDoubleClick += mouseDoubleClick;

        Controls.Add(control);
    }

}

至于颜色，您可以在 xml 文件中添加一个属性，该属性将指向我们要设置的控件的属性名称并使用反射。例如:

<?xml version="1.0" encoding="utf-8"?>
<cs>
  <Label Content="Double-click to edit." LocationX="583" LocationY="254" A="255" R="255" G="255" B="255" ColorProperty="ForeColor" />
  <LinkLabel Content="Double-click to edit." LocationX="613" LocationY="251" A="255" R="0" G="0" B="0" ColorProperty="LinkColor" />
</cs>

顺便说一下，XAML 已经提供了您要在此处实现的大部分功能。当然，它采用 WPF 接口(interface)，这可能不是您的情况。

关于c# - 读取和处理 XML 文件，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/2218031/