Question

我正在尝试将对象添加到对象列表中。但是我遇到了几个问题。

我有2个班级：

element.h展开

#pragma once
#include "LinePiece.h"

using namespace System::Collections::Generic;

ref class Element
{
public:
    Element();

    //properties
    System::String^ ON;                     //order nummer
    System::String^ MO;                     //order merk
    System::String^ SN;                     //element nummer
    System::String^ RS;                     //element afwerking
    System::String^ OW;                     //wapeningspatroon
    System::String^ CN;                     //element calculation number
    int el_length;                          //element lengte
    int el_width;                           //element hoogte
    int el_beginX;                          //element beginpunt
    int el_concrete_height;                 //element hoogte beton
    int el_iso_height;                      //element isolatie hoogte
    System::String^ el_weight;              //element gewicht
    List<LinePiece^>^ listLinePieces;       //lijst met contouren       
};

和我的第二堂课：LinePiece.h

#pragma once

ref class LinePiece
{
private :
    System::String^ Type;
    int ElementNr;
    int Status;
    int X, Y, X2, Y2;
    int Diameter;
    System::String^ Text;
public:
    LinePiece();

    //Constructor CO
    LinePiece(System::String^ a_type, int a_ElementNr, int a_Status, int a_x, int a_y)
    {
        Type = a_type;
        ElementNr = a_ElementNr;
        Status = a_Status;
        X = a_x;
        Y = a_y;
    }       
    //Constructor LN met tekst
    LinePiece(System::String^ a_type, int a_ElementNr, int a_Status, int a_x, int a_y, int a_x2, int a_y2, System::String^ a_text)
    {
        Type = a_type;
        ElementNr = a_ElementNr;
        Status = a_Status;
        X = a_x;
        Y = a_y;
        X2 = a_x2;
        Y2 = a_y2;
        Text = a_text;
    }

和我的上一个文件我有ReadPlotFile.h，我填写了我的列表。

List<Element^>^ ReadPlotFile::GetElementInfo(List<String^>^ a_FileBuffer)
{
    List<Element^>^ ElementList = gcnew List<Element^>;
    List<LinePiece^>^ LinePieceList = gcnew List<LinePiece^>; 

    Type = "LN";
    EleNr = System::Convert::ToInt32(ElementNumber);
    Status = 0;
    Line = "BO    55041        0    61920        0"; // a line out of a file

    X1 = System::Convert::ToInt32(Line->Substring(3, 9));
    Y1 = System::Convert::ToInt32(Line->Substring(12, 9));
    X2 = System::Convert::ToInt32(Line->Substring(21, 9));
    Y2 = System::Convert::ToInt32(Line->Substring(30, 9));  

    LinePiece lpObject(Type, EleNr, Status, X1, Y1, X2, Y2);
    LinePieceList->Add(lpObject); // ERROR HERE 
}

我知道错误是抱怨在我的列表中添加LinePiece对象（因为我的列表是LinePiece^）。错误：C2664'void System :: Collections :: GenericList :: Add（LinePiece ^）'：无法将参数1从'LinePiece转换为Linepiece ^'

但是当我删除列表中的^时。（比如：List<LinePiece>^ LinePieceList<LinePiece>;它给出了以下错误：“LinePiece”不是有效的通用参数。

如何解决此问题并将LinePiece对象添加到列表中？

将对象添加到对象列表C ++ / CLI

0 个答案: