对象引用未设置为object的实例：weifenluo的C ++ / cli中的dockpanel套件

问题描述

我是Dock Panel套件的新手

基本上我在从xml文件加载布局时遇到运行时错误。保存布局工作正常。

我有2个表格，第一个是主表格。第二种形式是儿童形式

I'm new to Dock Panel suite
Basically i'm having run time error when it comes to loading layout from xml file. saving layout works fine.
I have 2 forms, 1st one is main form. 2nd form is child form

public ref class MyForm2 : DockContent //2nd form (child form)

主要形式的
，我有以下代码

in main form, i have following code

private: IDockContent ^GetContentFromPersistString(System::String ^persistString)
{
    array<Char>^ id = { ',' };
    array<System::String^> ^parsedStrings = persistString->Split(id);

    if (parsedStrings->Length != 3)
    return nullptr;

    MyForm2 ^mf2 = gcnew MyForm2();
    if (parsedStrings[1] != System::String::Empty)
        mf2->Name = parsedStrings[1];
    if (parsedStrings[2] != System::String::Empty)
        mf2->Text = parsedStrings[2];
    return mf2;
}

private: System::Void MyForm_Load(System::Object^  sender, System::EventArgs^  e) {
        System::String^ path = Path::Combine(Path::GetDirectoryName(Application::ExecutablePath), "DockPanel.config");
        DeserializeDockContent ^m_deserializeDockContent = gcnew DeserializeDockContent(GetContentFromPersistString);
            dockPanel1->LoadFromXml(path, m_deserializeDockContent); //Crashes here
        }

An unhandled exception of type 'System.NullReferenceException' occurred in WeifenLuo.WinFormsUI.Docking.dll

Additional information: Object reference not set to an instance of an object.

我使用示例代码（DockSample项目）



我尝试了什么：



使用FileStream ^ fs1 = gcnew FileStream（path，FileMode :: Open，FileAccess :: Read）;

流^ s1 = fs1;而不是System :: String

I used this example code from C# (DockSample Project)

What I have tried:

using FileStream ^fs1 = gcnew FileStream(path, FileMode::Open,FileAccess::Read);
Stream ^s1 = fs1; instead of System::String

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