Select Tag Helper in ASP.NET Core MVC

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再見小時候 2020-11-22 04:35

I need some help with the select tag helper in ASP.NET Core.

I have a list of employees that I\'m trying to bind to a select tag helper. My employees are in a


      
      
        
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                   自闭症患者
                                             
                
                
                (楼主)
            
              
              
                2020-11-22 05:28
              

            
            
                        
I created an Interface and a  tag helper for this. So I didn't have to convert the IEnumerable items into IEnumerable every time I have to populate the 
    
    



And to make it work with the tag helper you have to implement that interface in your class:

public class Employee : IIntegerListItem
{
   public int Id { get; set; }
   public string FullName { get; set; }

   public int Value { return Id; }
   public string Text{ return FullName ; }
}




These are the needed codes:

The interface:

public interface IIntegerListItem
{
    int Value { get; }
    string Text { get; }
}


The  tag helper:

[HtmlTargetElement("options", Attributes = "asp-items")]
public class OptionsTagHelper : TagHelper
{
    public OptionsTagHelper(IHtmlGenerator generator)
    {
        Generator = generator;
    }

    [HtmlAttributeNotBound]
    public IHtmlGenerator Generator { get; set; }

    [HtmlAttributeName("asp-items")]
    public object Items { get; set; }

    public override void Process(TagHelperContext context, TagHelperOutput output)
    {
        output.SuppressOutput();
        // Is this  element a child of a 
                        
    

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