C#

    form.AutoSizeMode = AutoSizeMode.GrowAndShrink;
    form.AutoSize = true;
    form.Padding = new Padding(0, 0, 20, 20);
    form.FormBorderStyle = FormBorderStyle.FixedDialog;
    form.StartPosition = FormStartPosition.CenterScreen;
    form.MinimizeBox = false;
    form.MaximizeBox = false;
    form.AcceptButton = buttonOk;
    form.CancelButton = buttonCancel;
    form.Text = title;

    //Generate labels and text boxes
    for (int i = 1; i <= TxtCnt; i++)
    {
        //Create a new label and text box
        Label labelInput = new Label();
        TextBox textBoxNewInput = new TextBox();

        //Initialize label's property
       // labelInput.Text = "Input " + i;
        labelInput.Text = prompt[i-1];
        labelInput.Location = new Point(0,  (i * 30));
        labelInput.AutoSize = true;

        System.Drawing.SizeF sizeF = new System.Drawing.SizeF();
        System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(new System.Drawing.Bitmap(1, 1));
        sizeF = graphics.MeasureString(labelInput.Text, new System.Drawing.Font("Arial,Verdana,Helvetica,sans-serif", 10, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point));
        int maxTextWidthinPixel = Convert.ToInt32(sizeF.Width);

        //Initialize textBoxes Property
        textBoxNewInput.Location = new Point(maxTextWidthinPixel - 20, labelInput.Top - 3);
        textBoxNewInput.Width = 372;
        //Add the newly created text box to the list of input text boxes
        inputTextBoxes.Add(textBoxNewInput);

        //Add the labels and text box to the form
        form.Controls.Add(labelInput);
        form.Controls.Add(textBoxNewInput);
    }
    buttonOk.Text = "OK";
    buttonCancel.Text = "Cancel";
    buttonOk.Location = new Point(form.Width / 2 - buttonOk.Width / 2, inputTextBoxes[inputTextBoxes.Count - 1].Bottom + 20);
    buttonCancel.Location = new Point((form.Width / 2 + buttonOk.Width / 2)+10, inputTextBoxes[inputTextBoxes.Count - 1].Bottom + 20);
    form.Controls.Add(buttonOk);
    form.Controls.Add(buttonCancel);
    buttonOk.DialogResult = DialogResult.OK;
    buttonCancel.DialogResult = DialogResult.Cancel;
    buttonOk.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
    buttonCancel.Anchor = AnchorStyles.Bottom | AnchorStyles.Right;
    buttonOk.Click += new EventHandler(buttonOk_Click);

    form.ClientSize = new Size(396, 135);

    //for (int i = 1; i <= inputTextBoxes.Count; i++)
    //    inputTexts[i] = inputTextBoxes[i].Text;

    DialogResult dialogResult = form.ShowDialog();
    //value = textBox.Text;
    return inputTexts;

}

TimelineStart = new DateTime(2015, 08, 11, 10, 00, 00);
TimelineEnd   = new DateTime(2015, 08, 14, 20, 00, 00);

TotalHours = (TimelineEnd - TimelineStart).TotalHours; // Returns 82???

Day 1 = 10 Hours
Day 2 = 24 Hours
Day 3 = 24 Hours
Day 4 = 20 Hours
TOTAL   78 Hours