我正在尝试使用子项目工作的Listview的最简单的可能示例。但是这段代码:
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(“Ciao,Baby!”)。它显示:
Kannst du mich sehen?
---------------------
uno dos twa quad
...但我希望它是:
Kannst du mich sehen?
---------------------
uno Ciao, Baby!
dos Ciao, Baby!
twa Ciao, Baby!
quad Ciao, Baby!
更奇怪(在我看来),我明白了:
Default
-------
uno dos twa quad uno dos twa quad
FIRST
-----
uno dos twa quad
...使用此代码:
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];
}
}
}
如果你问我,ListView的View属性会有点奇闻趣事:
默认的“ LargeIcon ”设置最初显示(并且SmallIcon具有相同的效果)。 “详细信息”仅为我提供了群组标题(没有项目) “列表”为我提供了项目(一行一行,我想要),但没有组/标题 “ Tile ”给了我:
Kannst du mich sehen?
---------------------
uno dos
twa quad
...使用button1的代码并且:
Default
---------------------
uno dos
twa quad
uno dos
twa quad
FIRST
---------------------
uno dos
twa quad
...使用button2的代码
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?
~~~ 侧面(或底部)问题:由于我住在StackOverflow上,是否有可能成为双重公民,并且这样做是否有任何税收优惠?
答案 0 :(得分:3)
您需要为SubItem
添加另一列。您subitem
未显示的原因是因为没有列。试试这个。
listView1.Columns.Add("Column 1"); // you can change the column name
listView1.Columns.Add("Column 2");
string[] strArr = new string[4] { "uno", "dos", "twa", "quad" };
foreach (string x in strArr)
{
ListViewItem lvi = listView1.Items.Add(x);
lvi.SubItems.Add("Ciao, Baby!");
}
答案 1 :(得分:3)
这对我有用:
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);
}
}
事实证明,您必须将项目添加到组中,而不是在项目上设置组属性,如其他问题所示。非常非常奇怪。
结果是:
在.Net 4,WinForms,VS2010中测试
答案 2 :(得分:2)
添加子项后尝试添加项目:
ListViewItem lvi = new ListViewItem(strArr[i]);
lvi.SubItems.Add("Ciao, Baby!");
listView1.Items.Add(lvi);
listView1.Items[i].Group = listView1.Groups[0];
希望这有帮助!