如何将自定义属性网格与C#中的标准控件连接起来

本文关键字：标准 控件 连接 起来 自定义属性 网格 | 更新日期: 2023-09-27 18:01:09

我正在创建一个绘图程序，我希望用户能够更改他们创建的图形的外观。为他们提供更改系列颜色、数据点大小等的机会。我允许他们通过使用propertyGrid来做到这一点。然而，在使用堆栈溢出的优秀人员的帮助下，我能够将图表的所有属性导入到我的属性网格中；现在我不知道如何将图表连接到属性网格，所以当我更改网格中的某些内容时，图表就会更改。

到目前为止，我有

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        magRadioBox.Checked = true;
        PropertyGrid propertyGrid1 = new PropertyGrid();
        propertyGrid1.CommandsVisibleIfAvailable = true;
        propertyGrid1.Text = "Graph and Plotting Options";
        propertyGrid1.PropertyValueChanged += propertyGrid1_PropertyValueChanged;
        this.Controls.Add(propertyGrid1);
    }
    private void Form1_Load(object sender, EventArgs e)
    {
        this.Text = "MY Plot Program";
        propertyGrid1.SelectedObject = chart1; 
    }
    private void button1_Click(object sender, EventArgs e)
    {
        //some code that is populating my chart(chart1) with data 
        //....chart1 being filled with data 
    }
    private void propertyGrid1_PropertyValueChanged(object s , PropertyValueChangedEventArgs e)
    {
        //Getting the MyChart instance from propertyGrid 
        MyChart myChart = (MyChart)(((PropertyGrid)s.SelectedObject);
        //Calling the method that will refresh my chart1 
        myChart.Invalidate(); 
    }

上面的代码是我的表单。我的"MyChart"类代码是

namespace FFT_Plotter
{ 
    [DefaultPropertyAttribute("Text")]
    public class MyChart : Chart 
    {
        public event EventHandler PropertyChanged;
        private void OnPropertyChanged(object sender, EventArgs e)
        {
            EventHandler eh = propertyChanged;
            if(eh !=null)
            {
                eh(sender, e);
            }
            [BrowsableAttribute(false)]
            public new System.Drawing.Color BackColor
            {
                get { return BackColor; }//Here back color is just an example of a property, not necessarily one that I would make non-Browsable
                set 
                { 
                    base.BackColor = value; 
                    OnPropertyChanged(this,EventArgs.Empty);
                }
            }
        }
    }

上面的类让我拥有了一个属性网格，它包含了图表的所有属性，并允许我根据需要隐藏这些属性。然而，现在我陷入了理解如何将我的图表1连接到我创建的网格的困境。如果有人对如何做到这一点有任何建议，那将是非常有帮助的。

如何将自定义属性网格与C#中的标准控件连接起来

您必须添加propertyGrid1.SelectedObject = myChartInstance;，然后添加PropertyValueChanged事件侦听器，每次用户通过PropertyGrid更改myChartInstance属性时都会触发该侦听器。因此，假设每次更改后都要重新绘制图表，代码应该如下所示：

        private void propertyGrid1_PropertyValueChanged(object sender, PropertyValueChangedEventArgs e)
        {
           // Redraw the chart.
           chart1.Invalidate();
        }
        public Form1()
        {
            InitializeComponent();
            magRadioBox.Checked = true;
            PropertyGrid propertyGrid1 = new PropertyGrid();
            propertyGrid1.CommandsVisibleIfAvailable = true;
            propertyGrid1.Text = "Graph and Plotting Options";
            // Create your chart.
            chart1 = new MyChart();
            // Attach your chart to Property Grid.
            propertyGrid1.SelectedObject = (MyChart) chart1;
            propertyGrid1.PropertyValueChanged += propertyGrid1_PropertyValueChanged;
            this.Controls.Add(propertyGrid1);
        }

通过StackOverflow上伟大社区的帮助，这是我能够拼凑出的答案，(站在巨人的肩膀上(

   public partial class Form1 : Form {
            public Form1()
            {
                InitializeComponent();
                magRadioBox.Checked = true;
                PropertyGrid propertyGrid1 = new PropertyGrid();
                propertyGrid1.CommandsVisibleIfAvailable = true;
                propertyGrid1.Text = "Graph and Plotting Options";
                propertyGrid1.PropertyValueChanged += propertyGrid1_PropertyValueChanged;
                this.Controls.Add(propertyGrid1);
            } private void Form1_Load(object sender, EventArgs e) { this.Text = "MY Plot Program"; propertyGrid1.SelectedObject = chart1;  }
        private void button1_Click(object sender, EventArgs e)  {//some code that is populating my chart(chart1) with data   .... //chart1 being filled with data   }
        private void propertyGrid1_PropertyValueChanged(object s , PropertyValueChangedEventArgs e) { 
myChart.Invalidate();  
}

这是MyChart类的代码

namespace FFT_Plotter
{ 
    [DefaultPropertyAttribute("Text")]// This is where the initial position of the grid is set 
    public class MyChart : Chart 
    {
        public event EventHandler PropertyChanged;
private void OnPropertyChanged(object sender, EventArgs e)
{
EventHandler eh = propertyChanged;
if(eh !=null)
{
eh(sender, e);
}
        [BrowsableAttribute(false)]
        public new System.Drawing.Color BackColor
        {
            get { return BackColor; }//Here back color is just an example of a property, not necessarily one that I would make non-Browsable
            set { 
base.BackColor = value; 
OnPropertyChanged(this,EventArgs.Empty);
}
        }
    }
}

这在Form1.Designer.CS 中声明chart1是MyChart而不是System.Windows...Chart

...this.chart1  = new FFT_Ploter.MyChart(); ... private FFT_Plotter.MyChart chart1;
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