c# - 使用 ListView.Item.RemoveAt() 时不会删除指定的项目

Question

我尝试使用 RemoveAt() 方法从 ListView 中删除特定项目。但是当我第一次删除它时，一些项目会保留下来。

例如:见下图

代码:

private void button1_Click(object sender, EventArgs e)
    {
        for (int i = 0; i < listView1.Items.Count; i++) 
        {
            if (listView1.Items[i].SubItems[0].Text == "A1") 
            {
                listView1.Items.RemoveAt(i);
            }
        }
    }

    private void Form1_Load(object sender, EventArgs e)
    {
        for(int i = 0; i<3; i++)
        {
            ListViewItem lvi = new ListViewItem("A1");
            lvi.SubItems.AddRange(new string[] {"desc" + i.ToString(), i.ToString()});
            listView1.Items.Add(lvi);
        }

        for (int i = 0; i < 2; i++)
        {
            ListViewItem lvi = new ListViewItem("A2");
            lvi.SubItems.AddRange(new string[] { "desc" + i.ToString(), i.ToString() });
            listView1.Items.Add(lvi);
        }
    }

Answer 1

参见 MSDN在备注部分。

When you remove an item from the collection, the indexes change for subsequent items in the collection. All information about the removed item is deleted. You can use this method to remove a specific item from the collection by specifying the index of the item to remove from the collection. To specify the item to remove instead of the index to the item, use the Remove method. To remove all items from the collection, use the Clear method.

编辑:参见 Moot 的回答。上面的链接/引用也适用于他/她的回答。

编辑 2:

如果找到匹配项，只需将计数器倒上一个即可。

    for (int i = 0; i < listView1.Items.Count; i++)
    {
        if (listView1.Items[i].SubItems[0].Text == "A1")
        {
            listView1.Items.RemoveAt(i);
            i--; // Back counter up one
        }
    }