Mixing
How to calculate age from DatePicker?
-1
I am trying to validate that the user is old enough to use my app (> 15). In my app, the user has to set his/her date of birth during the sign up. From that I want to calculate the age in order to check whether the user is old enough.
The XAML code:
<Label Text="Date Of Birth"/>
<DatePicker BackgroundColor="White" Date="{Binding DateSelected}"/>
<Label TextColor="Red" Text="You have to be at least 15 years old" IsVisible="{Binding TooYoung}"/>
I am binding the Date and IsVisible as I am using the pattern MVVM. So, if the user is not old enough the second label should be shown.
c# xamarin xamarin.forms
asked Jan 2 at 2:05
BabBab
14810
add a comment |
-1
I am trying to validate that the user is old enough to use my app (> 15). In my app, the user has to set his/her date of birth during the sign up. From that I want to calculate the age in order to check whether the user is old enough.
The XAML code:
<Label Text="Date Of Birth"/>
<DatePicker BackgroundColor="White" Date="{Binding DateSelected}"/>
<Label TextColor="Red" Text="You have to be at least 15 years old" IsVisible="{Binding TooYoung}"/>
I am binding the Date and IsVisible as I am using the pattern MVVM. So, if the user is not old enough the second label should be shown.
c# xamarin xamarin.forms
asked Jan 2 at 2:05
BabBab
14810
add a comment |
-1
-1
-1
I am trying to validate that the user is old enough to use my app (> 15). In my app, the user has to set his/her date of birth during the sign up. From that I want to calculate the age in order to check whether the user is old enough.
The XAML code:
<Label Text="Date Of Birth"/>
<DatePicker BackgroundColor="White" Date="{Binding DateSelected}"/>
<Label TextColor="Red" Text="You have to be at least 15 years old" IsVisible="{Binding TooYoung}"/>
I am binding the Date and IsVisible as I am using the pattern MVVM. So, if the user is not old enough the second label should be shown.
c# xamarin xamarin.forms
asked Jan 2 at 2:05
BabBab
14810
I am trying to validate that the user is old enough to use my app (> 15). In my app, the user has to set his/her date of birth during the sign up. From that I want to calculate the age in order to check whether the user is old enough.
The XAML code:
<Label Text="Date Of Birth"/>
<DatePicker BackgroundColor="White" Date="{Binding DateSelected}"/>
<Label TextColor="Red" Text="You have to be at least 15 years old" IsVisible="{Binding TooYoung}"/>
I am binding the Date and IsVisible as I am using the pattern MVVM. So, if the user is not old enough the second label should be shown.
c# xamarin xamarin.forms
c# xamarin xamarin.forms
asked Jan 2 at 2:05
BabBab
14810
asked Jan 2 at 2:05
BabBab
14810
asked Jan 2 at 2:05
BabBab
14810
asked Jan 2 at 2:05
BabBab
14810
asked Jan 2 at 2:05
BabBab
14810
14810
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
0
var difference = DateSelected.subtract(DateTime.Today);
if (difference.TotalDays <= 5475){
//Trigger error event
}
Hope this helps.
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
1
Don't you meandifference.TotalDays <= 5475?
– Bab
Jan 2 at 2:28
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
add a comment |
1
You can try bellow code:
public bool TooYoung { get; set; }
private DateTime _DateSelected;
public DateTime DateSelected
{
get { return _DateSelected; }
set
{
if (_DateSelected.Equals(value))
{
return;
}
_DateSelected = value;
// check someone is too young or not
var age = CalculateAge(_DateSelected);
TooYoung = age <= 15;
}
}
private int CalculateAge(DateTime birthDay)
{
int years = DateTime.Now.Year - birthDay.Year;
if ((birthDay.Month > DateTime.Now.Month) || (birthDay.Month == DateTime.Now.Month && birthDay.Day > DateTime.Now.Day))
years--;
return years;
}
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
0
var difference = DateSelected.subtract(DateTime.Today);
if (difference.TotalDays <= 5475){
//Trigger error event
}
Hope this helps.
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
1
Don't you meandifference.TotalDays <= 5475?
– Bab
Jan 2 at 2:28
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
add a comment |
0
var difference = DateSelected.subtract(DateTime.Today);
if (difference.TotalDays <= 5475){
//Trigger error event
}
Hope this helps.
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
1
Don't you meandifference.TotalDays <= 5475?
– Bab
Jan 2 at 2:28
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
add a comment |
0
0
0
var difference = DateSelected.subtract(DateTime.Today);
if (difference.TotalDays <= 5475){
//Trigger error event
}
Hope this helps.
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
var difference = DateSelected.subtract(DateTime.Today);
if (difference.TotalDays <= 5475){
//Trigger error event
}
Hope this helps.
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
edited Jan 3 at 10:17
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
answered Jan 2 at 2:09
jamesfdearbornjamesfdearborn
579113
579113
1
Don't you meandifference.TotalDays <= 5475?
– Bab
Jan 2 at 2:28
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
add a comment |
1
Don't you meandifference.TotalDays <= 5475?
– Bab
Jan 2 at 2:28
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
1
1
Don't you mean
difference.TotalDays <= 5475 ?– Bab
Jan 2 at 2:28
Don't you mean
difference.TotalDays <= 5475 ?– Bab
Jan 2 at 2:28
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
Yes. Thanks for pointing this out.
– jamesfdearborn
Jan 3 at 10:16
add a comment |
1
You can try bellow code:
public bool TooYoung { get; set; }
private DateTime _DateSelected;
public DateTime DateSelected
{
get { return _DateSelected; }
set
{
if (_DateSelected.Equals(value))
{
return;
}
_DateSelected = value;
// check someone is too young or not
var age = CalculateAge(_DateSelected);
TooYoung = age <= 15;
}
}
private int CalculateAge(DateTime birthDay)
{
int years = DateTime.Now.Year - birthDay.Year;
if ((birthDay.Month > DateTime.Now.Month) || (birthDay.Month == DateTime.Now.Month && birthDay.Day > DateTime.Now.Day))
years--;
return years;
}
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
add a comment |
1
You can try bellow code:
public bool TooYoung { get; set; }
private DateTime _DateSelected;
public DateTime DateSelected
{
get { return _DateSelected; }
set
{
if (_DateSelected.Equals(value))
{
return;
}
_DateSelected = value;
// check someone is too young or not
var age = CalculateAge(_DateSelected);
TooYoung = age <= 15;
}
}
private int CalculateAge(DateTime birthDay)
{
int years = DateTime.Now.Year - birthDay.Year;
if ((birthDay.Month > DateTime.Now.Month) || (birthDay.Month == DateTime.Now.Month && birthDay.Day > DateTime.Now.Day))
years--;
return years;
}
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
add a comment |
1
1
1
You can try bellow code:
public bool TooYoung { get; set; }
private DateTime _DateSelected;
public DateTime DateSelected
{
get { return _DateSelected; }
set
{
if (_DateSelected.Equals(value))
{
return;
}
_DateSelected = value;
// check someone is too young or not
var age = CalculateAge(_DateSelected);
TooYoung = age <= 15;
}
}
private int CalculateAge(DateTime birthDay)
{
int years = DateTime.Now.Year - birthDay.Year;
if ((birthDay.Month > DateTime.Now.Month) || (birthDay.Month == DateTime.Now.Month && birthDay.Day > DateTime.Now.Day))
years--;
return years;
}
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
You can try bellow code:
public bool TooYoung { get; set; }
private DateTime _DateSelected;
public DateTime DateSelected
{
get { return _DateSelected; }
set
{
if (_DateSelected.Equals(value))
{
return;
}
_DateSelected = value;
// check someone is too young or not
var age = CalculateAge(_DateSelected);
TooYoung = age <= 15;
}
}
private int CalculateAge(DateTime birthDay)
{
int years = DateTime.Now.Year - birthDay.Year;
if ((birthDay.Month > DateTime.Now.Month) || (birthDay.Month == DateTime.Now.Month && birthDay.Day > DateTime.Now.Day))
years--;
return years;
}
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
answered Jan 2 at 3:46
Nhan PhanNhan Phan
9101623
9101623
add a comment |
add a comment |
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