通过输入出生日期转换失败来计算年龄 [英] Calculating age by entering date of birth conversion failure

问题描述

嗨
我已经完成以下代码来填写出生日期来计算我的年龄，我得到转换失败问题



我尝试过：

Hi I have done the below code to calculate my age by filling the date of birth,I get the conversion failure problem

What I have tried:

<pre> protected void Calendar1_SelectionChanged1(object sender, EventArgs e)
       {
            txtDob.Text = Calendar1.SelectedDate.ToString();
            Calendar1.Visible = false;
            int year = DateTime.Now.Year - Calendar1.SelectedDate.Year;
            int months = DateTime.Now.Month - Calendar1.SelectedDate.Month;

            string ageval = ((year - 1) + " years" + (-12 - months) + " months");

            if (months > 12)
            {
                year = year + 1;
            }
            int value = int.Parse(ageval);
            value = (ToString(txtAge.Text)) ;

Name varchar(50),Department varchar (50),Salary int
 DOJ datetime,DOB datetime,Age int,Country varchar(50),Stat varchar(50),Phone bigint,
 Email varchar(100),Pincode bigint)

推荐答案

嗯......这是一些奇怪的代码。

Um ... that's some odd code.

string ageval = ((year - 1) + " years" + (-12 - months) + " months");
...
int value = int.Parse(ageval);
value = (ToString(txtAge.Text)) ;

所以你加载一个字符串故意使用非整数值，然后尝试将其转换为整数，然后尝试使用某个随机用户输入的字符串ified版本进行覆盖。当它失败时你会感到惊讶吗？它甚至都不会编译，除非你的ToString方法命名非常非常糟糕！



看看这个：与年龄一起工作：它与TimeSpan不同！ [ ^ ] - 它为您完成所有legwork。

So you load a string with a non-integer value deliberately, then try to convert that to an integer, which you then try to overwrite with a string-ified version of some random user input. And you are surprised when it fails? It won't even compile, unless your ToString method is very, very badly named!

Have a look at this: Working with Age: it's not the same as a TimeSpan![^] - it does all the "legwork" for you.

protected void Calendar1_SelectionChanged(object sender, EventArgs e)
        {
            int year =Convert.ToInt32(DateTime.Now.Year);
            int month = Convert.ToInt32(DateTime.Now.Month);
            int day = Convert.ToInt32(DateTime.Now.Day);

            int dobYear =  Calendar1.SelectedDate.Year;
            int dobMonth = Calendar1.SelectedDate.Month;
            int dobDate = Calendar1.SelectedDate.Day;

            int ageDay = 0;
            int ageMonth = 0;
            int ageYear = 0;

            if (day >=  dobDate)
            {
                ageDay = day - dobDate;
            }
            else if(day< dobDate)
            {
                // If current Month= Jan, March, May, July, August, Oct, Dec i.e. of 31 days
                if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 || month == 12)
                {
                    day = day + 31;
                }
                //  if current Month is of 30 days.
                else if (month == 4 || month == 6 || month == 9 || month == 11) 
                {
                    day = day + 30;
                }
                // If Month is February
                else if (month == 2)
                {
                    if(year % 4==0) // if Year is Leap year then Feb will be of 29 days.
                    {
                        day = day + 29;
                    }
                    else
                    {
                        day = day + 28;
                    }
                }
                ageDay = day - dobDate;
                month = month - 1;
            }

            if (month >= dobMonth)
            {
                ageMonth = dobMonth - month;
            }
            else if (month < dobMonth)
            {
                month = month + 12;
                year = year - 1;
                ageMonth = month - dobMonth;               
            }

            ageYear = year - dobYear;
            string sAge = String.Format("{0} Year/s {1} Month/s {2} Day/s", ageYear, ageMonth, ageDay);
            TextBox1.Text = sAge;
       

        }

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