Question

hi im formulating my question now better.

in the foreach command i get for temp(save variable) values in an array. The values that i save in temp are from the datagridview cells.

in the next step, in the for command, i want to compare 2 strings, the string and the next string, if the fist string is bigger than the second, i want to change their positions. But there is the problem, they dont change positions they even get an empty value, and i cant understand why they get an empty value.

Im thinking that they get an empty value because of the foreach command, the index [i] just stays the same, but if i would put in i = i+1, the command would be out of bound.

Thank you

senc. NIko

foreach (DataGridViewRow row in dataGridView1.Rows)     
{
    if (row.Cells[i].Value == null)
    {
        //MessageBox.Show("This row is empty");
        break;
    }
    if (row.Cells[i].Value != null)
    {
        temp = row.Cells[i].Value.ToString();
        UnsortArray[i] = temp;
        i = i + 1;

    }
}

for (int a = 0; a < MaxZeilen; a++)
{
    if (i < MaxZeilen)
    {
        *if (String.Compare(UnsortArray[a], UnsortArray[a + 1]) > 0) 
        {
            UnsortArray[a] = temp;
            UnsortArray[a + 1] = temp2;
            temp = UnsortArray[a + 1];
            temp2 = UnsortArray[a];
        }*
    }
}

for (int i = 0; i < MaxZeilen; i++)
{
    UnsortArray[i] = SortArray[i];
    MessageBox.Show(UnsortArray[i]);
}

Answer 1

You’re backwards, assigning the array to your temp variables before assigning the temp variables:

UnsortArray[a] = temp;
UnsortArray[a + 1] = temp2;
temp = UnsortArray[a + 1];
temp2 = UnsortArray[a];

Try:

temp = UnsortArray[a + 1];
temp2 = UnsortArray[a];
UnsortArray[a] = temp;
UnsortArray[a + 1] = temp2;

And you’ve done it again here UnsortArray[i] = SortArray[i];. I think you mean SortArray[i] = UnsortArray[i];