如何将interger值传递给列表 [英] How to pass interger value to a list

问题描述

嗨伙计，



我对列表有一些小问题。

Hi Folks,

I have small question regarding lists.

private void ComboBox_SelectedValueChanged(object sender, EventArgs e)
       {
           
               if (dataSourceNameComboBox.SelectedItem != null)
               {
                 
                   int dataval = Convert.ToInt32(datatypeComboBox.SelectedIndex);
                   Model.ContProduct.Id= dataval ;
                   Model.Contlist.ToList<>();

                  
               }
           
       }


----- Here I want to pass 'dataval' value to the  Model.Contlist.ToList<>(); list to filter the data-----

BLL:

 public List<ContlistViewModel> Contlist{ get; set; }

DAL:

public class ContlistViewModel
{
        public int Id { get; set; }
        public string Name{ get; set; }
        public string Description{ get; set; }
        
}

推荐答案

我不完全确定你的意思是传递'dataval'值到Model.Contlist.ToList<>（）;列表 - 但我猜这意味着我想用它作为索引





为什么要将整数值转换为整数？

所以试试：

I'm not entirely sure what you mean by "pass 'dataval' value to the Model.Contlist.ToList<>(); list" - but I'm guessing it means "I want to use this as an index"


Why are you converting an integer value to an integer?
So try:

private void ComboBox_SelectedValueChanged(object sender, EventArgs e)
       {
               if (dataSourceNameComboBox.SelectedItem != null)
               {
                   int dataval = Convert.ToInt32(datatypeComboBox.SelectedIndex);
                   Model.ContProduct.Id= dataval ;
                   ContListViewModel cvm = Model.Contlist[dataval];
                   ...                    
               }
       }

但说实话，我可能会直接使用ContlistViewModel项加载Comboxbox，而是使用SelectedItem属性，覆盖必要时在类中使用ToString。

But to be honest, I'd probably load the Comboxbox with the ContlistViewModel items directly, and use the SelectedItem property instead, overriding ToString in the class as necessary.

这篇关于如何将interger值传递给列表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！