Question

我的问题是在上面的线上＆＃34;返回temp;＆＃34;在我的CreateNewDepartment函数中，我得到一个奇怪的编译错误（Visual Studio中的红色下划线）。当我在＆＃34; Department ^ temp（deptId，var [0]，var [1]）;＆＃34;中鼠标悬停在编译错误文本（＆＃34; deptId，＆＃34;）上时弹出提示说：

a value type of "int" cannot be used to initialize an entity of type "Department ^"

这是我创建新对象的代码：

Department^ CreateNewDepartment(SQLRETURN retCode, SQLHANDLE hStmt)
{
    int deptId;
    String^ Name;
    String^ Location;

    System::String^ bufN;
    char buf[256];
    SQLINTEGER numBytes;

    for (int i = 1; i <= 3; i++)
    {
        retCode = SQLGetData(
            hStmt,
            i,           // COLUMN NUMBER of the data to get
            SQL_C_CHAR,  // DATA TYPE that you expect to receive
            buf,         // BUFFER to put the data that you expect to receive
            255,         // BUFFER size in bytes (-1 for null terminator)
            &numBytes    // SIZE in bytes of data returned
        );

        if (CHECK(retCode, "SqlGetData", false))
        {
            bufN = gcnew String((char *)buf);
            if (i == 1)
            {
                std::string s = msclr::interop::marshal_as<std::string>(bufN);
                deptId = std::stoi(s, nullptr, 0);
            }
            else if (i == 2)
            {
                Name = bufN;
            }
            else if (i == 3)
            {
                Location = bufN;
            }
        }
    }
    Department^ temp(deptId, Name, Location);
    return temp;
}

部门的定义如下：

ref class Department
{
private:
    int _deptId;
    String^ _deptName;
    String^ _deptLocation;

public:
    Department(int id, String^ deptName, String^ deptLocation);
    <...snip...>

}

cstr和set函数：

Department::Department(int id, String^ deptName, String^ deptLocation)
{
    setDeptId(id);
    setDeptName(deptName);
    setDeptLocation(deptLocation);
}

void Department::setDeptId(int id)
{
    _deptId = id;
}

void Department::setDeptName(String^ name)
{
    _deptName = name;
}

void Department::setDeptLocation(String^ location)
{
    _deptLocation = location;
}

很抱歉，如果这是一个简单的错误或愚蠢的问题，但我是CLI的新手。

Answer 1

Department^ temp(deptId, Name, Location);

显然应该是：

Department^ temp(gcnew Department(deptId, Name, Location));

虽然我不知道为什么。洛尔

C ++ / CLI错误：＆＃39;值类型为＆＃34; int＆＃34;不能用于初始化类型＆＃34;部门^＆＃34;＆＃39;

1 个答案: