/// <summary>
/// 新增一個位數
/// </summary>
/// <param name="number">一個位數</param>
/// <returns>數字更新</returns>
public FrameUpdate AddNumber(char number)
{
//小數點case
if (number.Equals('.'))
{
//若這時沒有值→視為已經輸入零
if (NumberField == null)
{
NumberField = new NumberField();
NumberField.AddDigit(number);
return(new FrameUpdate("0.", new ExpUpdate(removeLength: 0, updateString: "0.")));
}
//若有值→判斷是否已為小數
if (NumberField.IsNumeric)
{
//已經是小數→不回傳值
return(new FrameUpdate(NumberField.Number.ToString() + ".", new ExpUpdate(removeLength: 0, updateString: string.Empty)));
}
else
{
//不是小數→更新小數點
NumberField.AddDigit(number);
return(new FrameUpdate(NumberField.Number.ToString() + ".", new ExpUpdate(removeLength: 0, updateString: ".")));
}
}
//防呆
if (!char.IsNumber(number))
{
throw new Exception("NewControll.Add該輸入數字");
}
//正常的數字case
if (NumberField == null)
{
NumberField = new NumberField(number);
}
else
{
NumberField.AddDigit(number);
}
return(new FrameUpdate(NumberField.Number.ToString(), new ExpUpdate(removeLength: 0, updateString: number.ToString())));
}