public string AddDay(string fromTextBox) { var baseDate = DateTime.Parse(fromTextBox); return baseDate.AddDays(1).ToString(CultureInfo.InvariantCulture); }
ValueChanged
DateTimePicker
private void dateTimePicker1_ValueChanged(object sender, EventArgs e) { DateTime date = dateTimePicker1.Value; textbox1.Text = date.AddDays(1).ToShortDateString(); textbox2.Text = date.AddDays(2).ToShortDateString(); textbox3.Text = date.AddDays(3).ToShortDateString(); textbox4.Text = date.AddDays(4).ToShortDateString(); }
var
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