WPF 委托事件

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新建委托类：

public class DataChangeEventArgs : EventArgs
{
// 定义委托
public delegate void DataChangeHandler(object sender, DataChangeEventArgs args);
public string devA { get; set; }

public string devB { get; set; }

public DataChangeEventArgs(string s1, string s2)
{
devA = s1;
devB = s2;
}
}

主窗口中定义

public void DataChangeDev(object sender, DataChangeEventArgs args) {
try
{
// 更新窗体控件
int a, b;
a = Convert.ToInt32(args.devA);
b = Convert.ToInt32(args.devB);
}
catch {
}
}

private void DevClick(object sender, RoutedEventArgs e)
{
DevSet devset = new DevSet();
devset.DataChange += new DataChangeHandler(DataChangeDev);
devset.textBox_Adevnum.Text = "0";
devset.textBox_Bdevnum.Text = "0";
devset.Top = this.Height / 3;
devset.Left = this.Height / 2;
devset.ShowDialog();
}

子窗口中

public partial class DevSet : Window
{

public event DataChangeHandler DataChange;// 声明事件

// 调用事件函数

public void OnDataChange(object sender, DataChangeEventArgs args)

{
if(DataChange != null)
{
DataChange(this, args);
}
}

public DevSet()
{
InitializeComponent();

}

private void button_set_Click(object sender, RoutedEventArgs e)
{
try
{

// this.Owner.
// 触发事件，传递自定义参数

OnDataChange(this, new DataChangeEventArgs(textBox_Adevnum.Text, textBox_Bdevnum.Text));
this.Close();
}
catch {

}


}
}

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