我正在尝试使用子项目工作的Listview获得最简单的示例.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!”).表明:
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!
更奇怪的是(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","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]; } } }
UPDATE
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).
“细节”只给我组头标题(没有项目)
“列表”给了我项目(一行一行,我想要),但没有组/标题
“瓷砖”给了我:
Kannst du mich sehen? --------------------- uno dos twa quad
…使用button1的代码和:
Default --------------------- uno dos twa quad uno dos twa quad FIRST --------------------- uno dos twa quad
…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:由于我居住在StackOverflow上,是否有可能成为双重公民,这样做是否有任何税收优惠?
解决方法
这对我有用:
listView1.Columns.Add("Col1"); listView1.Columns.Add("Col2"); string[] strArrGroups = new string[3] { "FIRST","THIRD" }; string[] strArrItems = new string[4] { "uno","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中测试过