C＃数组作为类属性 [英] C# Arrays as Class Properties

问题描述

我搜索了很多，但找不到任何解决方案。我可能使用错误的关键字。我有一个类，它基本上是一个扩展版本的ListView控件。

I searched a lot but couldn't find any solution. I am probably using the wrong keywords. I have a class which is basically an extended version of ListView control.

我为我的自定义ListView定义了一些自定义属性，如FileName，OrderType等， 。

I defined some custom attributes for my customized ListView, such as FileName, OrderType etc, and they work fine.

我也想传递一个数组给我的类，包括ColumnNames来填充类中的数据。

I also want to pass an array to my class which includes ColumnNames to populate the data within class.

MyListView 类

public class ColumnNames : Attribute
{
    public string[] Values { get; set; }

    public ColumnNames(params string[] values)
    {
        this.Values = values;
    }
}

[ColumnNames("a1","a2","a3","a4","a5","a6","a7","a8","a9")]

public MyListView() {

     for (int i = 0; i < 7; i++)
            this.Columns.Add(this.ColumnNames[i]);

    }

在 Form1 Class

MyListView lstv = new MyListView();

lstv.ColumnNames[0] = "hede1";
lstv.ColumnNames[1] = "hede2";
lstv.ColumnNames[2] = "hede3";

编辑：我根本无法实现我想要的。

EDIT : I simply couldn't achieve what I wanted. Could you show me a working example of this?

我使用此列表视图来显示从数据库中获取的信息。 （我使用ListView而不是DataGrid）我想传递的列名称，这个类将被用于SQL查询SELECT xxxxx，yyyyy，zzzz FROM table;和列名this.columns.add（xxxxx）; this.columns.add（yyyyy）; this.columns.add（zzzzz）;

I use this listview to display information taken from a database. (I use ListView instead of DataGrid) I want to pass the column names to this class which will be used both for SQL query "SELECT xxxxx, yyyyy, zzzz FROM table;" and column names this.columns.add("xxxxx"); this.columns.add("yyyyy"); this.columns.add("zzzzz");

推荐答案

如果要坚持使用属性，像这样：

If you want to stick to the attribute, you can access its data like this:

var attributes = this.GetType().GetCustomAttributes(typeof(ColumnNames), false);
foreach (var attr in attributes)
{
    var a = attr as ColumnNames;
    foreach (var column in a.Values)
    {
        this.Columns.Add(column);
    }
}

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