将字符串数组合并为逗号分隔的字符串（foreach）

Posted 2021-02-27

This can be useful for string preparations.

string str = "";
 
// loop though an array and create a string
// delimited with commas
foreach (string s in fieldNames)
{
    str += s;
 
    // if this not the last item in the array
    // append a comma to end of the string.
    if (s != fieldNames[fieldNames.Length - 1])
    {
        str += ", ";
    }
}