将字符数组装入数据表

我已经搜索了几个小时的方法来加载我的字符数组直接到一个动态表，然后到一个数据网格视图。

尝试了几种方法，但总有一些事情没有按计划进行。

通缉:数组按行写入表中，从一个单元格跳到另一个单元格。

private void btn_okay(object sender, EventArgs e)
{
    //reading the strings from the two text boxes 
    Char[] ArrayUp = rtb_up.Text.ToCharArray();
    Char[] ArrayDown = rtb_down.Text.ToCharArray();
    Char[] ArrayEnd = new Char [ArrayUp.Length * ArrayDown.Length];
    //comparison of the two char arrays and filling the new char array
    Int32 I = 0;
    for (Int32 C = 0; C < ArrayDown.Length; C++)
    {
       for (Int32 D = 0; D < ArrayUp.Length; D++)
        {
            if (ArrayDown[C] == ArrayUp[D])
            {
                ArrayEnd[I] = '+' ;
                I ++;
            }
            else
            {
                ArrayEnd[I] = '-'  ;
                I ++;
            }
        }
    }
    //creation of data table
    DataTable Table = new DataTable();
    for (Int32 E = 0; E < ArrayUp.Length; E++)
        Table.Columns.Add("", typeof(Char));
    for (Int32 R = 0; R < ArrayDown.Length; R++)
        Table.LoadDataRow(ArrayEnd[R], LoadOption.OverwriteChanges()); 
    //OverwriteChanges won't work
    dgv_main.AutoGenerateColumns = true;
    dgv_main.DataSource = Table;
}

string arrayUp = "ABBAAAABABAAAB"; // Example value for rtb_up.Text
string arrayDown = "ABABAAABAB"; // Example value for rtb_down.Text
DataTable dataTable = new DataTable();
// Add variable number of columns, depending on the length of arrayUp
for (int i = 0; i < arrayUp.Length; i++)
    dataTable.Columns.Add("");
// Iterate through the "rows" first
for (int i = 0; i < arrayDown.Length; i++)
{
    DataRow dataRow = dataTable.NewRow();
    // Then iterate through the "columns"
    for (int j = 0; j < arrayUp.Length; j++)
    {
        if (arrayDown[i] == arrayUp[j])
            dataRow[j] = "+";
        else
            dataRow[j] = "-";
    }
    dataTable.Rows.Add(dataRow);
}
dgv_main.AutoGenerateColumns = true;
dgv_main.DataSource = dataTable;