C# · 12月 24, 2021

c# – 无法将带有[]的索引应用于类型为`object’的表达式

这是我的代码:ArrayList的ArrayList,它返回一个float: public ArrayList paredes=new ArrayList(); public void Start(){ paredes[0] = RetornaEmArrayList(279,275,90); paredes[1] = RetornaEmArrayList(62,0); paredes[2] = RetornaEmArrayList(62,62,90); paredes[3] = RetornaEmArrayList(217,-62,0); paredes[4] = RetornaEmArrayList(62,279,90); paredes[5] = RetornaEmArrayList(41,0); paredes[6] = RetornaEmArrayList(279,320,9); paredes[7] = RetornaEmArrayList(320,-279,0); for (int i = 0; i < paredes.Length; i++) { float a = (float)paredes[i][0]; float b = (float)paredes[i][1]; float c = (float)paredes[i][2]; float d = (float)paredes[i][3]; float e = (float)paredes[i][4]; }}ArrayList RetornaEmArrayList(float a,float b,float c,float d,float e){ ArrayList arrayList = new ArrayList(); arrayList.Add(a); arrayList.Add(b); arrayList.Add(c); arrayList.Add(d); arrayList.Add(e); return arrayList;}

它给了我以下错误:

error CS0021: Cannot apply indexing with [] to an expression of type
`object’

我已经做了铸造,出了什么问题?