有个问题请教下,
用反射方法调用时,为什么没法初始化当前窗体的控件内容
public class TTWinForm
{
public static void InvokeChildMethod(string ChildTypeString, string methodName)
{
Type type = Type.GetType(ChildTypeString);
object form = Activator.CreateInstance(type);
MethodInfo methodInfo = type.GetMethod(methodName);
methodInfo.Invoke(form, null);
}
}TTWinForm.InvokeChildMethod(typeof(TrainDo).ToString(), "LoadForm");
被调用的子窗体
public partial class TrainDo : Form
{
public void LoadForm()
{
button1.Text = "1212";
}
}
用反射方法调用时,为什么没法初始化当前窗体的控件内容
public class TTWinForm
{
public static void InvokeChildMethod(string ChildTypeString, string methodName)
{
Type type = Type.GetType(ChildTypeString);
object form = Activator.CreateInstance(type);
MethodInfo methodInfo = type.GetMethod(methodName);
methodInfo.Invoke(form, null);
}
}TTWinForm.InvokeChildMethod(typeof(TrainDo).ToString(), "LoadForm");
被调用的子窗体
public partial class TrainDo : Form
{
public void LoadForm()
{
button1.Text = "1212";
}
}
不起作用
public class TTWinForm
{
public static void InvokeChildMethod(Type type, string methodName, object instance)
{
object form = Activator.CreateInstance(type);
MethodInfo methodInfo = type.GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public);
methodInfo.Invoke(instance, null);
}
}TTWinForm.InvokeChildMethod(typeof(TrainDo), "LoadForm", this);
第一个参数已经你传入要方法所属的对象实例,此处你可以直接传入之前已打开窗体的实例!但是即然这样了,反射还有何价值呢?朋友Q
public class TTWinForm
{
public static void InvokeChildMethod(Type type, string methodName, object instance)
{
MethodInfo methodInfo = type.GetMethod(methodName, BindingFlags.Instance | BindingFlags.Public);
methodInfo.Invoke(instance, null);
}
}TTWinForm.InvokeChildMethod(typeof(TrainDo), "LoadForm", this);
TTWinForm.InvokeChildMethod(typeof(TrainDo).ToString(), "LoadForm");
这行代码的地方的其余代码贴出来
TTWinForm.OpenChildWindow(this, typeof(TrainDo).ToString())
然后调用其方法LoadForm
TTWinForm.InvokeChildMethod(typeof(TrainDo).ToString(), "LoadForm");
public class TTWinForm
{
/// <summary>
/// MDI打开子窗口(只是一个实例)
/// </summary>
/// <param name="MDIForm">父窗口</param>
/// <param name="ChildTypeString">子窗口类型</param>
public static void OpenChildWindow(System.Windows.Forms.Form MDIForm, string ChildTypeString)
{
if (!ContainMDIChild(MDIForm, ChildTypeString))
{
Assembly assembly = Assembly.GetExecutingAssembly();
Type typForm = assembly.GetType(ChildTypeString);
Object obj = typForm.InvokeMember(
null,
BindingFlags.DeclaredOnly |
BindingFlags.Public | BindingFlags.NonPublic |
BindingFlags.Instance | BindingFlags.CreateInstance,
null,
null,
null); if (obj != null)
{
Form myChild = obj as Form;
myChild.MdiParent = MDIForm;
myChild.Show();
myChild.Focus();
}
}
} /// <summary>
/// 查找是否包含子窗口
/// </summary>
/// <param name="MDIForm">父窗口</param>
/// <param name="ChildTypeString">子窗口类型</param>
/// <returns></returns>
private static bool ContainMDIChild(System.Windows.Forms.Form MDIForm, string ChildTypeString)
{
Form myMDIChild = null;
foreach (Form f in MDIForm.MdiChildren)
{
if (f.GetType().ToString() == ChildTypeString)
{
myMDIChild = f;
break;
}
} // 显示存在的form
if (myMDIChild != null)
{
myMDIChild.TopMost = true;
myMDIChild.Show();
myMDIChild.Focus();
return true;
}
else
return false;
}
public static void InvokeChildMethod(string ChildTypeString, string methodName)
{
Type type = Type.GetType(ChildTypeString);
object form = Activator.CreateInstance(type);
MethodInfo methodInfo = type.GetMethod(methodName);
methodInfo.Invoke(form, null);
}
}TTWinForm.InvokeChildMethod(typeof(TrainDo).ToString(), "LoadForm");
被调用的子窗体
public partial class TrainDo : Form
{
public void LoadForm()
{
button1.Text = "1212";
}
}
就是打开子窗口
public class TTWinForm
{
/// <summary>
/// MDI打开子窗口(只是一个实例)
/// </summary>
/// <param name="MDIForm">父窗口</param>
/// <param name="childType">子窗口类型</param>
/// <returns></returns>
public static Form OpenChildWindow(Form MDIForm, Type childType)
{
Form f = ContainMDIChild(MDIForm, childType);
if (f == null)
{
f = (Form)Activator.CreateInstance(childType);
f.MdiParent = MDIForm;
} f.Show();
f.Focus(); return f;
} /// <summary>
/// 查找是否包含子窗口
/// </summary>
/// <param name="MDIForm">父窗口</param>
/// <param name="childType">子窗口类型</param>
/// <returns></returns>
private static Form ContainMDIChild(Form MDIForm, Type childType)
{
foreach (Form f in MDIForm.MdiChildren)
{
if (f.GetType() == childType)
{
f.TopMost = true;
return f;
}
} return null;
} public static void InvokeChildMethod(Form f, Type childType, string methodName)
{
MethodInfo methodInfo = childType.GetMethod(methodName, BindingFlags.Public | BindingFlags.Instance | BindingFlags.NonPublic);
methodInfo.Invoke(f, null);
}
}调用时
Type t = typeof(TrainDo);
Form f = TTWinForm.OpenChildWindow(this, t);
TTWinForm.InvokeChildMethod(f, t, "LoadForm");