好的,所以这里是我的问题的一些上下文,写为伪C#代码(随意指出任何错误):(你可以直接跳转到stacktrace并稍后阅读上下文)
public class SomeForm {
private _model = new viewmodelClass
public void new() {
// Normal Winforms init omitted
viewmodelClassBindingSource.DataSource = _model;
SomeControl1.SetModel(_model);
}
}
public class SomeControl {
private _model = new viewmodelClass
internal void SetModel(viewmodelClass model) {
_model = model;
viewmodelClassBindingSource.DataSource = model;
viewmodelClassBindingSource.ResetBindings(true);
}
}
public class ComplexObject : IPropertyChanging,IPropertyChanged {
public property bool BoolProp {get; set;}
}
public class viewmodelClass : IPropertyChanged {
property IList<ComplexObject> ComplexObjects {get;}
property ComplexObject SelectedComplexObject {get; set;}
property Object SomethingNotNecessarilyRelated {get; set;}
private void NotifyPropertyChanged(string propName) {
PropertyChanged(this,new PropertyChangedEventArgs(propName));
}
}
这些类中的所有属性都在Visual Studio 2008 Windows窗体设计器,SomeForm或SomeControl类中进行数据绑定. (ComplexObject.BoolProp在两者中都是数据绑定的).不要犹豫,就更多的问题询问上下文.
问题：当我在viewmodelClass类中进行一些(通知)通知时,使用这种堆栈跟踪,可以将ComplexObject.BoolProp设置为false：
System.dll!System.ComponentModel.ReflectPropertyDescriptor.SetValue(object component = "Object Exposed in 'SelectedComplexObject'",object value = false) + 0x124 bytes
System.Windows.Forms.dll!System.Windows.Forms.BindToObject.SetValue(object value) + 0x5d bytes
System.Windows.Forms.dll!System.Windows.Forms.Binding.PullData(bool reformat,bool force) + 0x15a bytes
System.Windows.Forms.dll!System.Windows.Forms.BindingManagerBase.PullData(out bool success = true) + 0x6e bytes
System.Windows.Forms.dll!System.Windows.Forms.BindingSource.ParentCurrencyManager_CurrentItemChanged(object sender = {System.Windows.Forms.CurrencyManager},System.EventArgs e) + 0x54 bytes
[Native to Managed Transition]
[Managed to Native Transition]
System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.OnCurrentItemChanged(System.EventArgs e) + 0x17 bytes
System.Windows.Forms.dll!System.Windows.Forms.CurrencyManager.List_ListChanged(object sender,System.ComponentModel.ListChangedEventArgs e) + 0x3bc bytes
System.Windows.Forms.dll!System.Windows.Forms.BindingSource.OnListChanged(System.ComponentModel.ListChangedEventArgs e) + 0x7e bytes
System.Windows.Forms.dll!System.Windows.Forms.BindingSource.InnerList_ListChanged(object sender,System.ComponentModel.ListChangedEventArgs e) + 0x2e bytes
System.dll!System.ComponentModel.BindingList<System.__Canon>.OnListChanged(System.ComponentModel.ListChangedEventArgs e) + 0x17 bytes
System.dll!System.ComponentModel.BindingList<MyCompany.viewmodelClass>.Child_PropertyChanged(object sender,System.ComponentModel.PropertyChangedEventArgs e) + 0x176 bytes
[Native to Managed Transition]
[Managed to Native Transition]
MyCompany.Gui.exe!MyCompany.viewmodelClass.NotifyPropertyChanged(String propertyName = "SomethingNotNecessarilyRelated") Line 437 + 0x3c bytes Basic
为什么程序想要将SomeBool设置为false？我怎么能防止呢？
@H_404_11@@H_404_11@
我在Stack Overflow中的第一个问题是Windows窗体应用程序中的一个字段,其中包含一个意想不到的值,就像你的.解决方案是等待窗体加载事件被触发以设置窗体的GUI元素.
我将推迟设置_model(包括使用新建构造)和其他GUI元素,直到在窗体加载事件的处理程序中.
如何：
>在图形视图中打开窗体(例如,在解决方案资源管理器中双击SomeForm.cs)
>双击表单,外部任何控件或其他GUI元素(例如,在标题栏中).这将添加一个名为SomeForm_Load的函数的框架代码,这行是this.Load = new System.EventHandler(this.SomeForm_Load);将添加SomeForm.Designer.cs.
将设置代码移动到SomeForm_Load：
private void SomeForm_Load(object aSender,EventArgs anEvent)
{
_model = new viewmodelClass;
viewmodelClassBindingSource.DataSource = _model;
SomeControl1.SetModel(_model);
}
从_model的声明中删除“= new viewmodelClass”.
@H_404_11@ 原文链接：https://www.f2er.com/windows/363945.html