Question related to age calculation

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sir i am using three dropdownlist and and one text box in three dropdownlist i am showing date month year
i want to calculate age using all dropdownlist and display total age in the text box

Posted 12-May-16 21:20pm

Member 12513529

Updated 12-May-16 23:37pm

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CPallini · Answer 1 · 2016-05-12T21:30:00

Solution 1

Create a DateTime object based on the DropDownList entries, say dtALongTimeAgo
Get the TimeSpan object, say tsElapsed, as the difference between DateTime.Today and dtALongTimeAgo
Fell free to use the tsElapsed properties in order to retrieve all the info you need.

Posted 12-May-16 21:30pm

CPallini

Karthik_Mahalingam · Answer 2 · 2016-05-12T21:51:00

try this, customize it based on your need.

ASP.NET

Day:<asp:DropDownList runat="server" ID="ddlD">
      </asp:DropDownList>
      Month:<asp:DropDownList runat="server" ID="ddlM">
      </asp:DropDownList>
      Year:<asp:DropDownList runat="server" ID="ddlY">
      </asp:DropDownList>


      <asp:Label runat="server" ID="lblAge"></asp:Label>
      <asp:Button ID="btnCalculate" runat="server" Text="Calculate" OnClick="btnCalculate_Click" />

CS

C#

protected void Page_Load(object sender, EventArgs e)
        {
             

            if (!IsPostBack)
            { 
                for (int i = 1; i <= 31; i++)
                    ddlD.Items.Add(i.ToString());

                for (int i = 1; i <= 12; i++)
                    ddlM.Items.Add(i.ToString());

                for (int i = 1; i <= 75; i++)
                    ddlY.Items.Add((DateTime.Now.Year - i).ToString());
                 
            }
        }
       

        protected void btnCalculate_Click(object sender, EventArgs e)
        {
            int day,month,year ;
            int.TryParse(ddlD.Text, out day);
            int.TryParse(ddlM.Text, out month);
            int.TryParse(ddlY.Text, out year);

            DateTime target = new DateTime(year, month, day);
            DateTime now = DateTime.Now;
            Age age = new Age(target, now);
            lblAge.Text = string.Format(" {0} years, {1} months, and {2} days", age.Years, age.Months, age.Days);
            
        }

used this[^]code for calculating the age, just add it in your code