Question

在下面的代码中，我希望字符串值以逗号分隔，但它会产生类似testtest1test2的结果。但是我想显示像test，test1，test2.Pls帮助我。

    string Save=string.Empty;
    for (int i = 0; i < files.Count; i++)
    {
//i=0 test ,i=1 test1....
         Save += nFIleUpload.OrgFileName;// display  value like testtest1test2..
    }
    string s = string.Join(",", Save);

Answer 1

更改此代码

string Save=string.Empty;
for (int i = 0; i < files.Count; i++)
{
     Save += nFIleUpload.OrgFileName;// display  value like testtest1test2..
}
string s = string.Join(",", Save);

以下

var Save = new List<string>();
for (int i = 0; i < files.Count; i++)
{
     Save.Add(nFIleUpload.OrgFileName);// display  value like testtest1test2..
}
var s = string.Join(",", Save);

Answer 2

为了摆脱MethodMan的答案，当你厌倦了为每次迭代看到为Save添加相同的值时，请确保使用该索引。

var Save = new List<string>();
for (int i = 0; i < files.Count; i++)
{
    Save.Add(nFIleUpload[i].OrgFileName);// display  value like testtest1test2..
}
var s = string.Join(",", Save);

如果nFIleUpload实际上是保存字符串的变量..是文件变量吗？谁看着守望者？这些是要问的问题..

Answer 3

尝试使用数组，示例：

string[] save = new string[files.Count];
for (var i = 0; i < files.Count; i++)
   save[i] = nFIleUpload.OrgFileName;

// join all values
string s = string.Join(",", save);

或者使用stringBulder更好地连接字符串，例如：

// define the stringBuilder
StringBuilder text = new StringBuilder();

// define the loop to concat all values separated by ',' comma
for (var i = 0; i < files.Count; i++)
    text.AppendFormat("{0},", nFIleUpload.OrgFileName);

// get the output
string s = text.ToString();

// remove the last comma if necessary
if (s.EndsWith(","))
    s = s.Remove(s.Length - 1);

以字符串形式分隔逗号

3 个答案: