如何子项目添加到ListView？ [英] How to add subitems to a ListView?

问题描述

我试图让与子项目的工作ListView的最简单可行的例子。但是，这code：

I'm trying to get the simplest possible example of a Listview with subitems working. But this code:

private void button1_Click(object sender, EventArgs e) {
    listView1.Groups.Add(new ListViewGroup("Kannst du mich sehen?", HorizontalAlignment.Left));
    string[] strArr = new string[4] { "uno", "dos", "twa", "quad" };
    for (int i = 0; i < strArr.Length; i++)
    {
        ListViewItem lvi = new ListViewItem(strArr[i]);
        listView1.Items.Add(lvi);
        lvi.SubItems.Add("Ciao, Baby!");
        listView1.Items[i].Group = listView1.Groups[0];
    }
}

...不显示子项（即Ciao的，宝贝！S）。它显示：

...does not display the subitems (the "Ciao, Baby!"s). It shows:

Kannst du mich sehen?
---------------------
uno   dos   twa   quad

...但我希望它是：

...but I want it to be:

Kannst du mich sehen?
---------------------
uno Ciao, Baby!
dos Ciao, Baby!
twa Ciao, Baby!
quad    Ciao, Baby!

更奇怪的（在我看来），我得到这样的：

Even stranger (it seems to me), I get this:

Default
-------
uno dos twa quad    uno dos twa quad

FIRST
-----
uno dos twa quad

...这个code：

...with this code:

private void button2_Click(object sender, EventArgs e) {
    string[] strArrGroups = new string[3] { "FIRST", "SECOND", "THIRD" };
    string[] strArrItems = new string[4] { "uno", "dos", "twa", "quad" };
    for (int i = 0; i < strArrGroups.Length; i++)
    {
        listView1.Groups.Add(new ListViewGroup(strArrGroups[i], HorizontalAlignment.Left));
        for (int j = 0; j < strArrItems.Length; j++) {
            ListViewItem lvi = new ListViewItem(strArrItems[j]);
            listView1.Items.Add(lvi);
            lvi.SubItems.Add("Hasta la Vista, Mon Cherri!");
            listView1.Items[j].Group = listView1.Groups[i];
        }
    }
}

更新

ListView控件的视图属性的行为有点奇闻趣事，如果你问我：

UPDATE

The ListView's View property acts a little gonzo, if you ask me:

默认的 LargeIcon 的最初显示（和SmallIcon具有相同效果）设置的行为。
详细信息的给我的组头只（没有项目）
列表的给我的项目（​​一个上线，因为我想），但没有组/头
瓷砖的给我：

The default "LargeIcon" setting acts as originally shown (and SmallIcon has the same effect). "Detail" gives me the Group header only (no items) "List" gives me the items (one on a line, as I want), but no group/header "Tile" gives me:

Kannst du mich sehen?
---------------------
uno     dos
twa     quad

...按钮1用的code和：

...with button1's code and:

Default
---------------------
uno     dos
twa     quad
uno     dos
twa     quad

FIRST
---------------------
uno     dos
twa     quad

...用按钮2的code

...with button2's code

或者：

1) I'm stupid
2) ListView is very counterintuitive
-or
3) Nobody ever wants to use the ListView the way I'm trying to use it...if that's the case, should I be using a different control instead?

~~~
侧（或底部）的问题：因为我住在计算器上，是有可能成为双重国籍，以及是否有这样做的任何税收优惠。

~~~ Side (or bottom) question: Since I live on StackOverflow, is it possible to become a dual citizen, and are there any tax benefits in doing so?

推荐答案

这对我的作品：

listView1.Columns.Add("Col1");
listView1.Columns.Add("Col2");

string[] strArrGroups = new string[3] { "FIRST", "SECOND", "THIRD" };
string[] strArrItems = new string[4] { "uno", "dos", "twa", "quad" };
for (int i = 0; i < strArrGroups.Length; i++)
{
    int groupIndex = listView1.Groups.Add(new ListViewGroup(strArrGroups[i], HorizontalAlignment.Left));
    for (int j = 0; j < strArrItems.Length; j++)
    {
        ListViewItem lvi = new ListViewItem(strArrItems[j]);
        lvi.SubItems.Add("Hasta la Vista, Mon Cherri!");
        listView1.Items.Add(lvi);
        listView1.Groups[i].Items.Add(lvi);
    }
} 

原来，你必须给项目添加到组，而不是设置组属性的项目，如在其他问题。非常，非常奇怪。

It turns out that you have to add the items to the groups, and not set the group property on the item, as shown in other questions. Very, very strange.

的结果是：

在测试.NET 4中，的WinForms，VS2010

Tested in .Net 4, WinForms, VS2010

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