“use of unassigned local variable”错误意味着在C#等编程语言中,尝试使用一个尚未被赋值的局部变量。编译器检测到该变量在被使用前可能未被初始化,因此抛出一个错误以防止潜在的运行时异常。 2. 常见情形 变量声明后直接使用:在声明局部变量后,没有为其赋值就尝试使用它。 条件分支未全面覆盖:在条件语句(如if)...
你的if else写的有问题。你这样写相当于省略else if 后面的else，认为它是空的，那么就有可能出现一种情况number1>max和number1<max都没符合，即两者相等，走到那个空的else里面了，此时number1或number2没有被赋值。编译器会报错的。解决方法一个是定义的时候就初始化一下，或者去掉else if的那个if...
报Use of unassigned local variable 'writer'错误 一般报这个错误是由于未初始化, 把这个writer给初始化了就可以了。
.TryGetValue("k", out var value) == true) { var v = value; } } } Expected Behavior: No error. Actual Behavior: Error CS0165 Use of unassigned local variable 'value'CyrusNajmabadi transferred this issue from dotnet/roslyn Jul 9, 2020 Member CyrusNajmabadi commented Jul 9, 2020 ...
v.Property= o; // <-- error CS0165: Use of Unassigned local variable 'o' and MyObject o; bool b; if (objects != null) b = objects.TryGetValue(objectName, out o); else b = false; if (b) v.Property = o; // <-- error CS0165: Use of Unassigned local variable 'o' In eit...
} static void Output(string a) { Console.WriteLine("You wrote: {0}", a); } static void Main(string[] args) { string a; Input(ref a); Output(a); } } } When I compile this code, I get the error that I mentioned in the title of this problem. ...
Re: Use of unassigned local variable? Laura T. <LT@NOWHERE.COM wrote: <snip> a3 is still unassigned to the compiler. IMHO both ret and a3 are assigned definetly (it has catch all), and in any case, as they both have the same flow, I'd at least expect that it would complain on...
Re: unassigned use of local variable q Nevermind... need more coffee Eric Sabine wrote:[color=blue] > I just need to understand this bit. In some code, I had the > following give me an error at build time > > XmlDocument xmlDoc; ...
What does “Use of unassigned local variable” mean? The compiler isn't smart enough to know that at least one of yourifblocks will be executed. Therefore, it doesn't see that variables likeannualRatewill be assigned no matter what. Here's how you can make the compiler understand: ...