使用c#中的属性初始化类 -

Question

我不太了解房产.代码行:method2(x.str1,x.str2,x.str3,x.str4); ---抛出一个"对象引用未设置为对象错误的实例".任何想法都赞赏.x.str1没有解决？

(我正在添加一些代码并为现有设置添加更多功能.我会使用方法和属性初始化类myProperty.)

使用otherC#

   class Test{

    private myProperty x;

    private string  str1, str2, str3, str4;

    private myProperty A
            {

                get { return x; }          

                set
                {

                    str1 = value.str1;
                    str2 = value.str2;
                    str3 = value.str3;
                    str4 = value.str4;

                }             
            }

    public void myMethod()
        {

               Test tst = new Test();
               myProperty x = new myProperty();
               //Assigning property varaibles:
                  x.str1 = "this";
                  x.str2 = "is";
                  x.str3 = "my";
                  x.str4 = "test";

               try
                {

                    tst.method2(x.str1, x.str2, x.str3, x.str4);
                }
                catch(Exception)
                {
                    throw;
                }
            }

    public void method2(string str1, string str2,string str3, string str4)
     {
     }

    }

    OtherC#.cs  contains the definition for myProerty class

    namespace temp
    {
    public class xyx {some code;}
    public interface abc {some code};
    public class myProperty {

            public string str1 { get; set; }

            public string str2 { get; set; }

            public string str3 { get; set; }

            public string str4 { get; set; }
    }
    }

Answer 1

myProperty x 调用时未设置为对象的实例

x.str1 = "this";

您必须首先初始化它(例如,在构造函数代码中).