Question

我有一个名为str的数组列表，我想查看该数组列表中的元素，我应该如何使用消息框来显示它？

P.S。显示元素的第一个字段也很好

示例代码（我创建的用于从api检索数据的方法：

void downloader_OpenReadCompleted(object sender, OpenReadCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                Stream responseStream = e.Result;
                StreamReader responseReader = new StreamReader(responseStream);
                string response = responseReader.ReadToEnd();

                string[] split1 = Regex.Split(response, "},{");
                List<string> pri1 = new List<string>(split1);
                pri1.RemoveAt(0);
                string last = pri1[pri1.Count() - 1];
                pri1.Remove(last);

                str = pri1;
            }
        }

Answer 1

显示逗号分隔值：

var list = new List<string> { "tes1", "test2", "test3" };

var message = string.Join(",", list);
MessageBox.Show(message);

<强> [更新]

您可以在代码中进行一些增强：

private void button1_Click(object sender, RoutedEventArgs e)
{
    var response = "asdf},{asaaa},{shf";
    var split = Regex.Split(response, "},{");

    var elements = split
        .Skip(1)
        .Take(split.Length - 2)
        .ToList();

    var message = string.Join(",", elements);
    MessageBox.Show(message);
}

Answer 2

MessageBox.Show（String.Join（“”，str）但是你真的确定你想要这个吗？我的意思是在Silverlight ChildWindow中显示的ItemsControl中显示该列表会不会更有吸引力？

<ChildWindow>
 <ItemsControl ItemsSource="{Binding str}">
   <ItemsControl.ItemTemplate>
     <DataTemplate>
       <TextBlock Text="{Binding}"/>
     </DataTemplate>
   </ItemsControl.ItemTemplate>
</ItemsControl
</ChildWindow>

Answer 3

我通常做这样的事情：

    public void PrintList(IList<object> list)
    {
        string printString = "List Elements";

        foreach (object o in list)
        {
            // Add the fields you want to show here
            printString += "\n" + o.ToString();
        }

        MessageBox.Show(printString);
    }

对于您的实施，请将object替换为存储您从API中检索过的信息的类，并将要查看的字段添加到printString += ...行。

Answer 4

Linq为所需格式增加了灵活性：

var list = new List<string>{"one","two", "three"};

var consolidatedList = list.Aggregate((s1,s2) => String.Format("{0} {1}",s1,s2));
//consolidatedList = "one two three"

MessageBox.Show(consolidatedList)

使用消息框显示数组列表中的元素

4 个答案: