一分钟结贴

Question

int i = Application["currentuser"] + 1;

Answer 1

我用Application["currentuser"]+=1;编译通不过，有没有类似atoi的函数？

Answer 2

难道非要写成
Application["currentuser"]=Convert.ToInt32(Application["currentuser"])-1;吗？

Answer 3

Application.Lock();
Application["currentuser"] = (int)Application["currentuser"] + 1;
Application.Unlock();

Answer 4

Application["currentuser"] 是object
Convert.ToInt32(Application["currentuser"])-1 //转为int32 拆包
Application["currentuser"]= ...    //装包Application["currentuser"]+=1;  object 与  int 类型不相配,

Answer 5

 int i = Application["currentuser"].GetInt32(0);
 i++;