c# - Unity3D C# - 变量范围

Question

我正在将我的 Unity3D 游戏从 JS 转换为 C#，我遇到了这个函数的一些问题:

void ReorientationNaming(GameObject g)
    {
        ///find the cube and its bounds
        GameObject tobename = g;
        Bounds cubebound = tobename.renderer.bounds;
        string namex;
        string namey;
        string namez;

        GameObject[] allAxisList = GameObject.FindGameObjectsWithTag("AxisPlain");
        foreach(GameObject allAxis in allAxisList) 
        {
            Bounds axisbound = allAxis.renderer.bounds;
            if (cubebound.Intersects(axisbound))
            {
                if (allAxis.name.Contains("x")) 
                {
                    namex = allAxis.name;
                    namex = namex.Substring(1,1);
                    //print("namex" + namex);
                }
                if (allAxis.name.Contains("y")) 
                {
                    namey = allAxis.name;
                    namey = namey.Substring(1,1);
                }
                if (allAxis.name.Contains("z")) 
                {
                    namez = allAxis.name;
                    namez = namez.Substring(1,1);
                }
            }
            tobename.name = namex+namey+namez;//<-- this line is the problem!
        }
    }

最后一行给我错误:

Assets/Cumetry/MainGameLogic.cs(136,41): error CS0165: Use of unassigned local variable `namex'
Assets/Cumetry/MainGameLogic.cs(136,41): error CS0165: Use of unassigned local variable `namey'
Assets/Cumetry/MainGameLogic.cs(136,41): error CS0165: Use of unassigned local variable `namez'

我相信这是我声明字符串的方式。知道我该如何解决这个问题吗？

Answer 1

改变

    string namex;
    string namey;
    string namez;

到

    string namex = string.Empty;
    string namey = string.Empty;
    string namez = string.Empty;