无法在循环中打印数组元素，错误无法从 'string' 转换为 'string[]'

Question

我试图将我的数组中的每一行字符串打印到一个单独的文本文件中，但我似乎无法在我的数据源中包含带有索引的数组，我一直在 WriteAllLines()方法，错误：

Error CS1503 Argument 2: cannot convert from 'string' to 'string[]'

因为 T_tag[l].

有人可以帮我理解这个错误吗？

string[] Colmn_No = ColmnN.ToArray();

int ArrayLength = Colmn_No.Length;    

string[] Cleantag = new string[ArrayLength];
string[] CleanCage = new string[ArrayLength];
for (int i = 0; i <= ArrayLength - 1; i++)
{
    Cleantag[i] = Colmn_SmpNm[i].Trim().ToUpper();   
    CleanCage[i] = Colmn_Cage[i].Trim().ToUpper();  
}


string[] T_tag = new string[ArrayLength];
string[] A_tag = new string[ArrayLength];
for (int k = 0, l=0, m=0; k <= ArrayLength - 1; k++)
{
    if (Cleantag[k].StartsWith("T"))    
    {  
        T_tag[l] = "<T>"+ Cleantag[k]+"</T><C>C</C><V>"+ CleanCage[k]+"</V>";

        System.IO.File.WriteAllLines((RRfolder + "//" + Cleantag[k] + ".txt"), T_tag[l]);
        l++;
    }

Answer 1

//System.IO.File.WriteAllLines((RRfolder + "//" + Cleantag[k] + ".txt"), T_tag[l]);

1) 写入 1 行

System.IO.File.WriteAllText((RRfolder + "//" + Cleantag[k] + ".txt"), T_tag[l]);

2) 或者，写入所有行（在 for 循环之外执行）

System.IO.File.WriteAllLines((RRfolder + "//" + Cleantag[k] + ".txt"), T_tag);

无法在循环中打印数组元素，错误无法从 'string' 转换为 'string[]'

Cannot print array elements in loop, error cannot convert from 'string' to 'string[]'

c#

printing

arrays

string

elements