当我们按下 btnSettings 时,所有用户控件的属性都会显示在Property grid中。我想显示特定属性(仅TemperatureValue和TemperatureUnit),可以吗? 用户控制代码如下:
using System;
using System.Windows.Forms;
namespace Temperature
{
public partial class temperatureUc : UserControl
{
public enum temperatureUnit
{
Celsius, // default
Delisle, // °De = (100 − °C) * 3⁄2
Fahrenheit, // °F = °C * 9⁄5 + 32
Kelvin, // °K = °C + 273.15
Newton, // °N = °C * 33⁄100
Rankine, // °R = (°C + 273.15) * 9⁄5
Réaumur, // °Ré = °C * 4⁄5
Rømer // °Rø = °C * 21⁄40 + 7.5
}
public temperatureUc()
{
InitializeComponent();
this.cboTemperatureUnit.DataSource = Enum.GetValues(typeof(temperatureUnit));
}
#region "Event"
public delegate void SettingsStateEventHandler(object sender, EventArgs e);
public event SettingsStateEventHandler settingsStateChanged;
private void OnSettingsChanged(object sender, EventArgs e)
{
if (this.settingsStateChanged != null)
this.settingsStateChanged(sender, e);
}
#endregion
#region "Properties"
private Single _TemperatureValue;
public Single TemperatureValue
{
get
{
return this._TemperatureValue;
}
set
{
if (value.GetType() == typeof(Single))
{
_TemperatureValue = value;
this.txtTemperatureValue.Text = _TemperatureValue.ToString();
}
}
}
private temperatureUnit _TemperatureUnit;
public temperatureUnit TemperatureUnit
{
get
{
return this._TemperatureUnit;
}
set
{
if (value.GetType() == typeof(temperatureUnit))
{
_TemperatureUnit = value;
this.cboTemperatureUnit.Text = _TemperatureUnit.ToString();
}
}
}
#endregion
private void btnSettings_Click(object sender, EventArgs e)
{
this.OnSettingsChanged(sender, e);
}
}
}
上面代码的用户控件将从下面的代码中调用:
using System;
using System.Windows.Forms;
using Temperature;
using System.Diagnostics;
using System.Drawing;
namespace TemperatureImplements
{
public partial class Form1 : Form
{
private PropertyGrid pGrid = new PropertyGrid();
public Form1()
{
InitializeComponent();
this.temperatureUc1.settingsStateChanged += new temperatureUc.SettingsStateEventHandler(temperatureUc1_settingsStateChanged);
}
void temperatureUc1_settingsStateChanged(object sender, EventArgs e)
{
pGrid.Size = new Size(300, 500);
pGrid.Location = new Point(300,10);
pGrid.SelectedObject = temperatureUc1;
this.Controls.Add(pGrid);
}
}
}
图片如下: