C# 事件问题，下面的代码是反编译出来的，不知道怎么修改了

public delegate void DataChangeEventHandler(object sender, OPCDataChangeEventArgs e);
private MyOPC m_OPC = new MyOPC();
public event clsOPC.DataChangeEventHandler DataChange
{
[MethodImpl(MethodImplOptions.Synchronized)]
add
{
this.DataChange = (clsOPC.DataChangeEventHandler)Delegate.Combine(this.DataChange, value);
}
[MethodImpl(MethodImplOptions.Synchronized)]
remove
{
this.DataChange = (clsOPC.DataChangeEventHandler)Delegate.Remove(this.DataChange, value);
}
}

public event clsOPC.DataChangeEventHandler DataChange
{
add { this.DataChange += value; }
remove { this.DataChange -= value; }
}