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How to get the id of the toggled switch item in the listview using xamarin forms

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0

I have a listview and all the listview item contain a switch at the right end like below picture.

Listview Image

When I select an item the switch fires the Toggled event. My codes are adding below:

Xaml:

 <Switch IsToggled="false" Margin="210,2,2,2" Toggled="Switch_Toggled" />

Xaml.cs:

 private void Switch_Toggled(object sender, ToggledEventArgs e)
 
 // I need the retail_modified_item_id of the selected item, how I can access that

 
private void accept(object sender, EventArgs args)
 
 // fetch all selected items and display success 
 DisplayAlert("Success", "Request Accepted and Updated", "OK");
 

Model class:

namespace XamNative.Models


public class Human

 public string name get; set; 
 public int retail_modified_item_id get; set; 
 public double old_price get; set; 
 public double new_price get; set; 

I need the retail_modified_item_id of all the selected item[item1,item2],when i click accept button ?

listview xamarin.forms uiswitch

share|improve this question

edited Mar 27 at 12:51

Anu Priya

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you tried casting the sender as Switch and then accessing it's BindingContext. ListView automatically sets the BindingContext to the item so you should be able to access it like that. That being said I'm more of a fan of using Commands and CommandParameters though in the ListView case you need to do a little work around to get it right. Something to point you in the direction: stackoverflow.com/a/53671688/10608418
  
  – Knoop
  Mar 27 at 11:12
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Binding . is for binding the element from .cs file right ?now i want get toggled item id ..
  
  – Anu Priya
  Mar 27 at 11:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes it binds the item from the ItemsSource, so if that item has an Id property you should be able to access that.
  
  – Knoop
  Mar 27 at 12:17
  

  
  
  
  

add a comment | 

0

I have a listview and all the listview item contain a switch at the right end like below picture.

Listview Image

When I select an item the switch fires the Toggled event. My codes are adding below:

Xaml:

 <Switch IsToggled="false" Margin="210,2,2,2" Toggled="Switch_Toggled" />

Xaml.cs:

 private void Switch_Toggled(object sender, ToggledEventArgs e)
 
 // I need the retail_modified_item_id of the selected item, how I can access that

 
private void accept(object sender, EventArgs args)
 
 // fetch all selected items and display success 
 DisplayAlert("Success", "Request Accepted and Updated", "OK");
 

Model class:

namespace XamNative.Models


public class Human

 public string name get; set; 
 public int retail_modified_item_id get; set; 
 public double old_price get; set; 
 public double new_price get; set; 

I need the retail_modified_item_id of all the selected item[item1,item2],when i click accept button ?

listview xamarin.forms uiswitch

share|improve this question

edited Mar 27 at 12:51

Anu Priya

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Have you tried casting the sender as Switch and then accessing it's BindingContext. ListView automatically sets the BindingContext to the item so you should be able to access it like that. That being said I'm more of a fan of using Commands and CommandParameters though in the ListView case you need to do a little work around to get it right. Something to point you in the direction: stackoverflow.com/a/53671688/10608418
  
  – Knoop
  Mar 27 at 11:12
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Binding . is for binding the element from .cs file right ?now i want get toggled item id ..
  
  – Anu Priya
  Mar 27 at 11:24
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Yes it binds the item from the ItemsSource, so if that item has an Id property you should be able to access that.
  
  – Knoop
  Mar 27 at 12:17
  

  
  
  
  

add a comment | 

I have a listview and all the listview item contain a switch at the right end like below picture.

Listview Image

When I select an item the switch fires the Toggled event. My codes are adding below:

Xaml:

 <Switch IsToggled="false" Margin="210,2,2,2" Toggled="Switch_Toggled" />

Xaml.cs:

 private void Switch_Toggled(object sender, ToggledEventArgs e)
 
 // I need the retail_modified_item_id of the selected item, how I can access that

 
private void accept(object sender, EventArgs args)
 
 // fetch all selected items and display success 
 DisplayAlert("Success", "Request Accepted and Updated", "OK");
 

Model class:

namespace XamNative.Models


public class Human

 public string name get; set; 
 public int retail_modified_item_id get; set; 
 public double old_price get; set; 
 public double new_price get; set; 

I need the retail_modified_item_id of all the selected item[item1,item2],when i click accept button ?

listview xamarin.forms uiswitch

share|improve this question

edited Mar 27 at 12:51

Anu Priya

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

 <Switch IsToggled="false" Margin="210,2,2,2" Toggled="Switch_Toggled" />

 private void Switch_Toggled(object sender, ToggledEventArgs e)
 
 // I need the retail_modified_item_id of the selected item, how I can access that

 
private void accept(object sender, EventArgs args)
 
 // fetch all selected items and display success 
 DisplayAlert("Success", "Request Accepted and Updated", "OK");
 

namespace XamNative.Models


public class Human

 public string name get; set; 
 public int retail_modified_item_id get; set; 
 public double old_price get; set; 
 public double new_price get; set; 

share|improve this question

edited Mar 27 at 12:51

Anu Priya

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

share|improve this question

edited Mar 27 at 12:51

Anu Priya

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

asked Mar 27 at 10:31

Anu PriyaAnu Priya

655 bronze badges

1 Answer
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0

get the BindingContext of the switch, and from that get the ID you need

// list to hold all selected values
List<string> selected = new List<string>();

private void Switch_Toggled(object sender, ToggledEventArgs e)

 // I need the retail_modified_item_id of the selected item, how I can access that

 var switch = (Switch)sender;
 var human = (Human)switch.BindingContext;
 var id = human.retail_modified_item_id;

 // add/remove id from selected based on IsToggled
 if (switch.IsToggled) 
 if (!selected.Contains(id)) selected.Add(id);
 else 
 if (selected.Contains(id)) selected.Remove(id);
 

share|improve this answer

edited Mar 27 at 14:35

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Is this id have entire selected value? how to print this ?
  
  – Anu Priya
  Mar 27 at 12:29
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  id will have the id. human will be the entire selected object. I'm not sure what you mean by "print"? You can use a DisplayAlert to display a message to the user, or Console.Writeline to output it to the console.
  
  – Jason
  Mar 27 at 12:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i want all selected value but this id only returns what i selected at that time.i have to send all selected value to accept( )function
  
  – Anu Priya
  Mar 27 at 12:47
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, then you should have asked that in your original question. It's trivial to create an array or other data structure to maintain the list of all selected elements. Or you could use databinding to track them in your model.
  
  – Jason
  Mar 27 at 12:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i added.i fetch the data from api so id is binding with API.. do you mean instead of id i have to create an array .. right ?but how get array length and get all values ?
  
  – Anu Priya
  Mar 27 at 12:56
  
  

  
  
  
  

 | 
show 1 more comment

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0

get the BindingContext of the switch, and from that get the ID you need

// list to hold all selected values
List<string> selected = new List<string>();

private void Switch_Toggled(object sender, ToggledEventArgs e)

 // I need the retail_modified_item_id of the selected item, how I can access that

 var switch = (Switch)sender;
 var human = (Human)switch.BindingContext;
 var id = human.retail_modified_item_id;

 // add/remove id from selected based on IsToggled
 if (switch.IsToggled) 
 if (!selected.Contains(id)) selected.Add(id);
 else 
 if (selected.Contains(id)) selected.Remove(id);
 

share|improve this answer

edited Mar 27 at 14:35

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Is this id have entire selected value? how to print this ?
  
  – Anu Priya
  Mar 27 at 12:29
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  id will have the id. human will be the entire selected object. I'm not sure what you mean by "print"? You can use a DisplayAlert to display a message to the user, or Console.Writeline to output it to the console.
  
  – Jason
  Mar 27 at 12:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i want all selected value but this id only returns what i selected at that time.i have to send all selected value to accept( )function
  
  – Anu Priya
  Mar 27 at 12:47
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, then you should have asked that in your original question. It's trivial to create an array or other data structure to maintain the list of all selected elements. Or you could use databinding to track them in your model.
  
  – Jason
  Mar 27 at 12:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i added.i fetch the data from api so id is binding with API.. do you mean instead of id i have to create an array .. right ?but how get array length and get all values ?
  
  – Anu Priya
  Mar 27 at 12:56
  
  

  
  
  
  

 | 
show 1 more comment

0

get the BindingContext of the switch, and from that get the ID you need

// list to hold all selected values
List<string> selected = new List<string>();

private void Switch_Toggled(object sender, ToggledEventArgs e)

 // I need the retail_modified_item_id of the selected item, how I can access that

 var switch = (Switch)sender;
 var human = (Human)switch.BindingContext;
 var id = human.retail_modified_item_id;

 // add/remove id from selected based on IsToggled
 if (switch.IsToggled) 
 if (!selected.Contains(id)) selected.Add(id);
 else 
 if (selected.Contains(id)) selected.Remove(id);
 

share|improve this answer

edited Mar 27 at 14:35

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Is this id have entire selected value? how to print this ?
  
  – Anu Priya
  Mar 27 at 12:29
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  id will have the id. human will be the entire selected object. I'm not sure what you mean by "print"? You can use a DisplayAlert to display a message to the user, or Console.Writeline to output it to the console.
  
  – Jason
  Mar 27 at 12:34
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i want all selected value but this id only returns what i selected at that time.i have to send all selected value to accept( )function
  
  – Anu Priya
  Mar 27 at 12:47
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Well, then you should have asked that in your original question. It's trivial to create an array or other data structure to maintain the list of all selected elements. Or you could use databinding to track them in your model.
  
  – Jason
  Mar 27 at 12:54
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  i added.i fetch the data from api so id is binding with API.. do you mean instead of id i have to create an array .. right ?but how get array length and get all values ?
  
  – Anu Priya
  Mar 27 at 12:56
  
  

  
  
  
  

 | 
show 1 more comment

get the BindingContext of the switch, and from that get the ID you need

// list to hold all selected values
List<string> selected = new List<string>();

private void Switch_Toggled(object sender, ToggledEventArgs e)

 // I need the retail_modified_item_id of the selected item, how I can access that

 var switch = (Switch)sender;
 var human = (Human)switch.BindingContext;
 var id = human.retail_modified_item_id;

 // add/remove id from selected based on IsToggled
 if (switch.IsToggled) 
 if (!selected.Contains(id)) selected.Add(id);
 else 
 if (selected.Contains(id)) selected.Remove(id);
 

share|improve this answer

edited Mar 27 at 14:35

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges

// list to hold all selected values
List<string> selected = new List<string>();

private void Switch_Toggled(object sender, ToggledEventArgs e)

 // I need the retail_modified_item_id of the selected item, how I can access that

 var switch = (Switch)sender;
 var human = (Human)switch.BindingContext;
 var id = human.retail_modified_item_id;

 // add/remove id from selected based on IsToggled
 if (switch.IsToggled) 
 if (!selected.Contains(id)) selected.Add(id);
 else 
 if (selected.Contains(id)) selected.Remove(id);
 

share|improve this answer

edited Mar 27 at 14:35

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges

answered Mar 27 at 11:37

JasonJason

55.9k1313 gold badges9898 silver badges122122 bronze badges