遍历数据表并将值分配给不同的变量

Question

I have a datatable containing a list of 6 values. I want to iterate over this table and assign every new row value to a different variable. The table is filled by a class named DataTasks.

This is how I do it at the moment, but I am sure there must be a better, more concise way?

DataTable dt = new DataTable();
dt = DataTasks.CreateDataTableFromSQL(strSQL);
// Loop counter
int i = 0;

foreach (DataRow row in dt.Rows)
{
    // Assign ranges - this is where I hope to have better code!!
    switch(i)
    {
        case 0:
            SomeClass.Range1 = (int)row["Range"];
            break;
        case 1:
            SomeClass.Range2 = (int)row["Range"];
            break;
        case 2:
            SomeClass.Range3 = (int)row["Range"];
            break;
        case 3:
            SomeClass.Range4 = (int)row["Range"];
            break;
        case 4:
            SomeClass.Range5 = (int)row["Range"];
            break;
        case 5:
            SomeClass.Range6 = (int)row["Range"];
            break;
        default:
            break;
    }

    // Increment counter
    i++;
}

Answer 1

Well, by the looks of it you're simply assigning the value of 'Range' depending on what row number it is. So why not just do that with out a for loop and do it using indexes. This assumes the number of rows in your datatable is always 6 of course.

Something like this should work:

SomeClass.Range1 = (int)dt.Rows[0]["Range"]; //Gets value in 'Range' column in first row.
SomeClass.Range2 = (int)dt.Rows[1]["Range"]; //Gets value in 'Range' column in second row.
//Add more here.

Answer 2

You could try storing all of the ranges in an array

DataTable dt = new DataTable();
dt = DataTasks.CreateDataTableFromSQL(strSQL);
// Loop counter
int i = 0;

int[] ranges = new int[6];

//assuming you have 6 rows
foreach (DataRow row in dt.Rows)
{
  ranges[i] = (int)row["Range"];    

  i++;
}