How to get which checkbox have check true or false on razor page mvc ?

To recognize which checkbox have checked or not

public class AddUserAccessModel : PageModel
{
    [BindProperty]
    public UC.ADC.Core.Entities.SQL.UserAccess UserAccess { get; set; }

    public async Task OnPost(UC.ADC.Core.Entities.SQL.UserAccess useraccess)
    {
        var checkedModuleCodes = Request.Form["checks"] as string[];
        if (checkedModuleCodes != null)
        {
            foreach (var checkedModuleCode in checkedModuleCodes)
            {
                switch (checkedModuleCode)
                {
                    case "1":
                        UserAccess.MODULECODE = 1;
                        break;
                    case "2":
                        UserAccess.MODULECODE = 2;
                        break;
                    case "3":
                        UserAccess.MODULECODE = 3;
                        break;
                }
            }
        }
    }
}

This code will first get the value of the "checks" input field from the request. If the value is not null, it will then iterate through the values and set the corresponding value of the UserAccess.MODULECODE property. For example, if the user checks the "StockTake" and "ShelfLabelPrint" checkboxes, the UserAccess.MODULECODE property will be set to 1 and 2, respectively.

1. Check if you have declared and initialized the variables and objects correctly.

2. Ensure that you have included all the necessary libraries or packages that are required for your code to work.

3. Verify that the values you are passing to the objects are valid and not null.

4. Check for any typos or syntax errors in your code.

5. Debug your code to locate the exact line where the error is occurring.

6. If the error persists, try searching online for similar issues and possible solutions.

i get error can't set object reference to null

 

        Submit
        

            User ID
            

                
            
        
    
        Stock Take
    
        Shelf Label Print

    
        Transfer

        
     
        
    

public class AddUserAccessModel : PageModel
{
    [BindProperty]
    public UC.ADC.Core.Entities.SQL.UserAccess UserAccess { get; set; }
    
    public async Task OnPost()
    {
        bool stockTakeChecked = UserAccess.MODULECODE == 1;
        bool shelfLabelPrintChecked = UserAccess.MODULECODE == 2;
        bool transferChecked = UserAccess.MODULECODE == 3;
        
        // Do something with the checked checkboxes here
    }
}

@Html.AntiForgeryToken()

    Submit

    

        User ID
        

            
        
    
    
    Stock Take
    
    Shelf Label Print

    
    Transfer