C#

public static double?[] slopeImpl(double?[] vals, int offset)
{
    double y = 0;

    int iterableLength = vals.Length;

    int numValues = vals.Length;
    double invNumValues = 1.0 / (vals.Length - offset);
    double x = (double)(((numValues * (numValues - 1)) >> 1) - ((offset * (offset - 1)) >> 1));

    for (int i = offset; i < iterableLength; i++) {

        y += (vals[i].GetType() == typeof(System.DBNull)) ? 0.0 : (double)vals[i];
    }

    y = y * invNumValues;

    double v1 = 0.0;
    double v2 = 0.0;
    double v2HalfResult = 0.0;

    for (int i = offset; i < iterableLength; i++) {
        v2HalfResult = (i - x);
        v1 += (v2HalfResult) * ((double)vals[i] - y);
        v2 += (v2HalfResult) * (v2HalfResult);
    }

    double slope = v1 / v2;
    double intercept = y - slope * x;

    double?[] result = new double?[2];
    result[0] = slope;
    result[1] = intercept;
    return result;
}

private void getUserInfo(string UserId)
{
    var task = facebookClient.GetTaskAsync(UserId);
    Action<object> action = userInfoRequestCallback;
    task.ContinueWith(action);
}

private void userInfoRequestCallback(object data)
{
    Task<object> task = data as Task<object>;
    IDictionary<string, object> results = task.Result as IDictionary<string, object>;

    FacebookUser = new FacebookUserModel
    {
        UserId = (string)results["id"],
        UserName = (string)results["name"],
        FirstName = (string)results["first_name"],
        LastName = (string)results["last_name"],
        Link = (string)results["link"],
        Gender = (string)results["gender"],
        Locale = (string)results["locale"],
    };
}

FacebookUserModel user = getUserInfo("someid");

SN = Microsoft.VisualBasic.Interaction.InputBox("Enter Serial Number", "", "", 200, 150);

using Microsoft.VisualBasic;

…
                                // Populate dataGridView with all available options for the given field (stored in oCodeList)
dgvMultiCodes.AutoGenerateColumns = false;
            dgvMultiCodes.DataSource = oCodeList.Table;

            string SQLState = ChcekedSQLStatement();        // Build SQL statement for options that are already checked

            SortedList<int, string> slCodeList = new SortedList<int, string>();
            int codeCD = 0;
            string desc = "";
            oCodeList.GoTop();
            // Save options DataTable values and keys in a SortedList
            while (!oCodeList.EoF)
            {
                codeCD = oCodeList.GetInteger("CD");
                desc = oCodeList.GetString("DEF");
                slCodeList.Add(codeCD, desc);
                oCodeList.Skip();
            }


            bool bChecked = false;
            // Select/check already selected checkboxes in the dataGridView
            ##DataReader checkedList = new ##DataReader(SQLState, currentUser.oConnection);
            while (checkedList.Read())
            {
                bChecked = slCodeList.ContainsKey(checkedList.GetInteger("KEYCODE"));

                if (bChecked)
                {
                    foreach (DataGridViewRow row in dgvMultiCodes.Rows)
                    {
                        if (row.Cells[dgvCodeCol.Index].Value.ToString() == checkedList.GetString("KEYCODE"))
                        {
                            row.Cells[dgvCheckCol.Index].Value = true;  // DOESN’T CHECK CHECKBOX IN DATAGRIDVIEW
                            break;
                        }
  }
                }

                bChecked = false;
            }
            …