如何解决C++/cli 我有一个问题,我的 std::list 是空的
我的问题是我试图将 3 个字符串保存在一个列表中以占据相同的位置,但由于某种原因它对我不起作用,我尝试使用向量而不是列表,但出现了同样的问题。我知道变量有正确的输入,所以我不明白为什么它不会正确地将值推送到列表中。
这是我的 Lists.h
#pragma once
#include <list>
#include <string>
#include <iostream>
namespace JobStatus
{
using namespace System::Collections::Generic;
using namespace System::Text;
using namespace std;
class service_Order
{
private:
string serviceOrder_Number;
string serviceOrder_Status;
string time_Stamp;
public:
string GetserviceOrder_Number()
{
return serviceOrder_Number;
}
string SetserviceOrder_Number(string serviceOrderNumber)
{
serviceOrderNumber = serviceOrder_Number;
return serviceOrderNumber;
}
string GetserviceOrder_Status()
{
return serviceOrder_Status;
}
string SetserviceOrder_Status(string serviceOrderStatus)
{
serviceOrderStatus = serviceOrder_Status;
return serviceOrderStatus;
}
string Gettime_Stamp()
{
return time_Stamp;
}
string Settime_Stamp(string timeStamp)
{
timeStamp = time_Stamp;
return timeStamp;
}
};
class Lists
{
public:
list<service_Order> service_Order_List;
};
}
这是我的 Add_Job_Info.h 的一部分
private: System::Void Add_Job_Click(System::Object^ sender,System::EventArgs^ e)
{
//Gets SO number from the text Box
String^ service_order_number = Service_Order_Number->Text;
ClrstringToStdString(serviceOrderNumber,service_order_number);
//Gets SO status from the select Box
String^ service_order_status = Job_Status->Text;
ClrstringToStdString(serviceOrderStatus,service_order_status);
//Gets time from the system
Time t;
t.setTime();
if (t.timeinfo.tm_min < 10)
{
String^ timestamp = (t.timeinfo.tm_hour + ":0" + t.timeinfo.tm_min);
ClrstringToStdString(timeStamp,timestamp);
}
else
{
String^ timestamp = (t.timeinfo.tm_hour + ":" + t.timeinfo.tm_min);
ClrstringToStdString(timeStamp,timestamp);
}
//Saves all of the above in a List
newSO.SetserviceOrder_Number(serviceOrderNumber);
newSO.SetserviceOrder_Status(serviceOrderStatus);
newSO.Settime_Stamp(timeStamp);
service_order_lists.service_Order_List.push_back(newSO);
for each (newSO in service_order_lists.service_Order_List)
{
cout << serviceOrderNumber; //shows service order number correct
cout << serviceOrderStatus; //shows service order status correct
cout << timeStamp; //shows time stamp correctly
cout << newSO.GetserviceOrder_Number() << ":" << newSO.Gettime_Stamp() << ":" << newSO.GetserviceOrder_Status(); //This returns only ::
}
this->Close();
}
这会将 windows 字符串转换为标准字符串
static void ClrstringToStdString(string& outStr,String^ str) //Converts Windows managed Strings to std unmanaged strings
{
IntPtr ansiStr = Marshal::StringToHGlobalAnsi(str);
outStr = (const char*)ansiStr.ToPointer();
Marshal::FreeHGlobal(ansiStr);
}
如果你需要我展示我完整的 Add_Job_Info.h 那么我会编辑帖子,我只是不想发布太多代码来惹恼任何人
解决方法
更换 serviceOrderNumber = serviceOrder_Number;
与 serviceOrder_Number = serviceOrderNumber;
已解决我的问题
感谢 1201ProgramAlarm 解决了我的问题。
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