The first step crafting an View Model that fits represents the UI you are trying to achieve.
public class Country
{
public int Id { get; set; }
public string Name { get; set; }
public List<State> States { get; set; }
}
public class State
{
public int Id { get; set; }
public string Name { get; set; }
}
Fill the view model and display the view model.
foreach(Country country in countries)
{
//Write Country
Console.WriteLine(country.Name);
foreach(State state in country.States)
{
//Write state
Console.WriteLine($" {state.Name}");
}
}
These concepts are covered in EF Core fundamentals.
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Nested Forloop in asp.net core
Oct 04, 2019 03:27 PM|Prathamesh Shende|LINK
Hi,
i have two table
Country and State which is also connected to each other using FK PK.
I want to represent the data in this form
United States
California
NewYork
India
Delhi
Panjab
I think structure will be like this
Foreach (Country)
{
Foreach(State)
}
How can i code this ? I tried but its not work by me. please tell me how can i implement this.
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Re: Nested Forloop in asp.net core
Oct 04, 2019 04:30 PM|mgebhard|LINK
The first step crafting an View Model that fits represents the UI you are trying to achieve.
public class Country { public int Id { get; set; } public string Name { get; set; } public List<State> States { get; set; } } public class State { public int Id { get; set; } public string Name { get; set; } }Fill the view model and display the view model.
foreach(Country country in countries) { //Write Country Console.WriteLine(country.Name); foreach(State state in country.States) { //Write state Console.WriteLine($" {state.Name}"); } }These concepts are covered in EF Core fundamentals.
Member
75 Points
161 Posts
Re: Nested Forloop in asp.net core
Oct 04, 2019 06:07 PM|Prathamesh Shende|LINK
its not working sir. I think i made mistake while putting code.
can you please tell me where do i place this ? What is 'countries' ? I got this Country is coming from ViewModel
Please help me, I am new on .net core
Thank You
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Re: Nested Forloop in asp.net core
Oct 07, 2019 05:07 AM|Nan Yu|LINK
Hi Prathamesh shende ,
I would suggest you first read how to enable relationship in EF Core :
Configuring One To Many Relationships in Entity Framework Core
So that you can read with navigation property easily :
https://www.entityframeworktutorial.net/efcore/one-to-many-conventions-entity-framework-core.aspx
https://www.learnentityframeworkcore.com/conventions/one-to-many-relationship
Best Regards,
Nan Yu