将数组的每个字段分配给变量，foreach 循环

Question

I have a string array, and a for each loop. I want to loop through the array and do something to each field and then output the result of each field to a new variable.

EDIT: Each field of the array gets a value from a hidden field that represents a time in mins. In the foreach loop, it was my intention to convert each of the fields from mins to HH:mm format. Then I need to pass the new format into a new variable.

Array:

string[] field = new string[8];
        field[0] = field_0_0.Value;
        field[1] = field_0_1.Value;
        field[2] = field_0_2.Value;
        field[3] = field_0_3.Value;
        field[4] = field_1_0.Value;
        field[5] = field_1_1.Value;
        field[6] = field_1_2.Value;
        field[7] = field_1_3.Value;

Foreach Loop:

foreach (string newfields in field)
{
    //Do something to each field  
}

The part I am looking for assistance with is assigning each result to a new variable. Can anybody point me in the right direction, or even suggest a different/better way to do this.

Thanks in advance.

Answer 1

Just use an ordinary for loop.

for(int i=0;i<field.Length;i++) {
    string curValue = field[i];

    // do something with curValue, change it in some way

     field[i] = curValue; //update
}

If this is not what you're asking for, please clarify.

Answer 2

You can change the object your are enumerating, but not with a foreach. You will need to use for loop. Modified sample thanks to comments

List<string> mylist = new List<string>();
    mylist.Add("item1");
    mylist.Add("item2");

    for (int i = 0; i < mylist.Count; i++)
    {
        mylist[i] = mylist[i].Replace("i", "o");
    }

Answer 3

Use for instead foreach , the foreach don't let you change your values.

Use a for like this one:

for(int i = 0; i < field.Length; i++)
   //Do something to each field 
   field[i] = "text"+i;

Answer 4

1. Create variable counter and set it to zero.
2. long i = 0;
3. Create the for each loop.

foreach(string field in fields){
    // Use i counter to initialize the array index
    fields[i]="New Field String.";
    // Increment the counter i by 1
    i++;
}

4. This will assign a value to each of the fields array values