[英]C# XML. Get data from XML to object, update in UI, save back to XML
[英]Load object from xml, edit values in a dynamic UI and save back to xml
我刚刚阅读并将其应用于容器面板上的动态 object,标题为 label,内容为文本框。 但是在这里我在文本框中填写数据时无法保存。
这是我的反序列化 xml 代码:
string Location= Path.Combine("D:\\Data\\Code.xml");
XmlDocument doc = new XmlDocument();
doc.Load(lokasiString);
foreach (XmlNode node in doc.DocumentElement)
{
string name = node.Attributes[0].InnerXml;
string value = node.InnerText;
// create panel
Panel panel = new Panel();
panel.Name = "panelImages";
panel.Size = new Size((int)(this.Width*0.9), 30);
panel.Dock = DockStyle.Top;
panel.BorderStyle = BorderStyle.FixedSingle;
Label l = new Label();
l.Text = name;
l.Font = new Font("Serif", 12, FontStyle.Bold);
l.ForeColor = Color.Black;
l.Size = new Size((int)(this.Width * 0.2), 30);
l.Dock = DockStyle.Left;
TextBox tb = new TextBox();
tb.Text = value;
tb.Font = new Font("Serif", 12, FontStyle.Bold);
tb.ForeColor = Color.Black;
tb.Size = new Size((int)(this.Width * 0.9), 30);
tb.Dock = DockStyle.Left;
panel.Controls.Add(tb);
panel.Controls.Add(lt);
panel.Controls.Add(l);
flowLayoutPanel1.Controls.Add(panel);
}
这是我的 Xml 代码:
<resources>
<string name="name">Tap Crush</string>
<string name="mode">Slow</string>
<string name="score">12345</string>
</resources>
我没有使用 C# 解析 Xml 的先验知识。
定义 model 类并使用数据绑定编辑 model,然后您可以将问题分解为以下部分:
定义一个 Model class 包含List<Resource>
和每个Resource
具有Title
和Content
。
编写一些逻辑以从 xml 加载 model 或将 model 保存到 Z0F635D0E0F3874FFF8BZ581C。
编写一段代码来安排 UI 并设置 UI 控件以使用数据绑定到您的模式。
然后您可以轻松地从 xml 加载数据,在 UI 中编辑并将数据保存到 xml。
Model 类
您可以像这样使用 model 类:
public class Model
{
public List<Resource> Resources { get; set; }
}
public class Resource
{
public string Title { get; set; }
public string Content { get; set; }
}
设置用户界面
有多种方法可以在表单中动态显示控件集合。 在这里,我将展示如何使用 DataGridView 和 TableLayoutPanel 来做到这一点:
数据网格视图
表格布局面板
创建 DataGridView
var dg = new DataGridView();
dg.Dock = DockStyle.Fill;
dg.BorderStyle = BorderStyle.None;
dg.GridColor = Color.Black;
dg.AutoGenerateColumns = true;
dg.EditMode = DataGridViewEditMode.EditOnEnter;
dg.DataSource = model.Resources;
dg.DataBindingComplete += (o, a) =>
{
dg.RowHeadersVisible = dg.ColumnHeadersVisible = false;
dg.AllowUserToResizeColumns = false;
dg.AllowUserToResizeRows = false;
dg.BackgroundColor = SystemColors.Control;
dg.Columns[0].ReadOnly = true;
dg.Columns[0].AutoSizeMode = DataGridViewAutoSizeColumnMode.AllCells;
dg.Columns[0].DefaultCellStyle.ForeColor = Color.Black;
dg.Columns[0].DefaultCellStyle.BackColor = SystemColors.Control;
dg.Columns[0].DefaultCellStyle.SelectionForeColor = Color.Black;
dg.Columns[0].DefaultCellStyle.SelectionBackColor = SystemColors.Control;
dg.Columns[1].AutoSizeMode = DataGridViewAutoSizeColumnMode.Fill;
};
this.Controls.Add(dg);
创建 TableLayoutPanel
var tlp = new TableLayoutPanel() { ColumnCount = 2, AutoSize = true };
tlp.ColumnStyles.Add(new ColumnStyle(SizeType.AutoSize));
tlp.ColumnStyles.Add(new ColumnStyle(SizeType.Percent, 100));
tlp.SuspendLayout();
foreach (var resource in model.Resources)
{
tlp.RowStyles.Add(new RowStyle(SizeType.AutoSize));
var lbl = new Label() { AutoSize = true, Margin = new Padding(4) };
lbl.TextAlign = System.Drawing.ContentAlignment.MiddleLeft;
lbl.DataBindings.Add(new Binding(nameof(Label.Text), resource, nameof(Resource.Title)));
var txt = new TextBox();
txt.DataBindings.Add(new Binding(nameof(TextBox.Text), resource, nameof(Resource.Content)));
txt.Dock = DockStyle.Fill;
tlp.Controls.AddRange(new Control[] { lbl, txt });
}
tlp.ResumeLayout();
this.Controls.Add(tlp);
加载并保存 Model
您可以像这样创建 class:
public class ModelFactory
{
public Model FromXmlString(string xml)
{
return new Model()
{
Resources = XElement.Parse(xml).Elements()
.Select(x => ResourceFromXElement(x)).ToList()
};
}
public string ToXmlString(Model model)
{
return new XElement("resources",
model.Resources.Select(x => ResourceToXElement(x)).ToArray())
.ToString();
}
private Resource ResourceFromXElement(XElement element)
{
return new Resource()
{
Title = element.Attribute("name").Value,
Content = element.Value
};
}
private XElement ResourceToXElement(Resource resource)
{
return new XElement("string",
new XAttribute("name", resource.Title),
resource.Content);
}
}
然后轻松加载并保存 model:
Model model;
ModelFactory modelFactory = new ModelFactory();
private void loadButton_Click(object sender, EventArgs e)
{
var xml = @"
<resources>
<string name=""name"">Tap Crush</string>
<string name=""mode"">Slow</string>
<string name=""score"">12345</string>
</resources>";
//Load model from xml
model = modelFactory.FromXmlString(xml);
//Setup UI
}
private void saveButton_Click(object sender, EventArgs e)
{
//Save model to xml
var xml = modelFactory.ToXmlString(model);
MessageBox.Show(xml);
}
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