发表新帖
发表新帖

How to display row numbers in a ListView?

前端 未结
关注
10 889
盖世英雄少女心
盖世英雄少女心 2020-11-27 04:33

The obvious solution would be to have a row number property on a ModelView element, but the drawback is that you have to re-generate those when you add records or change sor

10条回答
  • 难免孤独
    难免孤独 (楼主)
    2020-11-27 05:34

    This will work like a charm, I don't know about performance, Still we can give it a try

    Create a Multi Value Converter

    public class NumberingConvertor : IMultiValueConverter
 {
  public object Convert(object[] values, Type targetType, object parameter, System.Globalization.CultureInfo culture)
  {
   if (values != null && values.Any() && values[0] != null && values[1] != null)
   {
    //return (char)(((List)values[1]).IndexOf(values[0]) + 97);
    return ((List)values[1]).IndexOf(values[0]) + 1;
   }
   return "0";
  }

  public object[] ConvertBack(object value, Type[] targetTypes, object parameter, System.Globalization.CultureInfo culture)
  {
   return null;
  }
 }
}



    and 
your Xaml like this    
    


    
        
            
                
            
        
        
            
                
                    
                    
                
            
        
    

    


    Idea is to send Object and list both to the converter and let converter decide the number. You can modify converter to display ordered list.
    
    
    
             
    
                                                        
    
            
            
    
              
                
                0
              
                   
                
               讨论(0)
              
                                                  
              
              
    
                          
             
       
          
              
    
                                       
    

    

                
    
                         
          
                              			
        
        
        
    
          
    
            
            
    
              
              
    
            
    


                                 
              
    
            
    
                          
    

        
         
    
                
                
    
                  
                
    
                
    
                   看不清?
                
    
              
    
                                  
    
                    
   
                 
             
              
    提交回复
    
            
    
          
    
        
    
      
       
      
    
    
    
          
 
     
 
    
        
    热议问题