对 ListView 中的每一行进行编号 (C#)

Question

修订：我有一个 Windows 窗体应用程序并添加了一个 ListView。我可以将项目添加到我的列表视图中，但我想对具有项目的每一行进行编号。我希望这些数字出现在第 2 列中。

        if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
        {
            int initialID = 2;

            //Change button text.
            button4.Text = ("Clear/Add Fonts");

            //For each string in the open file dialog array.
            foreach (string fontFileName in ofd.SafeFileNames)
            {
                //Add a line in the list view for each selected file. Don't allow for the same file to appear twice.
                if (listView1.FindItemWithText(fontFileName) == null)
                {
                    for (int i = 0; i < initialID; i++)
                        listView1.Items.Add(fontFileName).SubItems.Add((i).ToString());
                }
            }
        }

抱歉，修改后的变化有些戏剧性。我现在有数字出现在字体 ID 下，但现在我似乎无法让它增加。我想我已经很接近了。

答案： 以下是我如何实施 Cyral 的建议：

if (ofd.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                int initialID = 1;
                int count = initialID;

                //Change button text.
                button4.Text = ("Clear/Add Fonts");

                //For each string in the open file dialog array.
                foreach (string fontFileName in ofd.SafeFileNames)
                {
                    //Add a line in the list view for each selected file. Don't allow for the same file to appear twice.
                    if (listView1.FindItemWithText(fontFileName) == null)
                    {
                            listView1.Items.Add(fontFileName).SubItems.Add(count++.ToString());
                    }
                }
            }
            else

Answer 1

老问题：

您需要在刚刚添加的ListViewItem 上设置SubItems。

lvi.Text = fontFileName;
lvi.SubItems.Add(initialID.ToString());
listView1.Items.Add(lvi);

新问题：

您的计数器循环将不起作用，因为它每次都会重置，并且因为您的 InitialID 为 1，i 将始终为 0。

我建议使用以下方法：

int initialID = 1; //Make a constant and put it somewhere
int count = initialID; //Will count how many items are added (Could also be done with a for loop with a condition)
foreach (string fontFileName in ofd.SafeFileNames)
{
    //Add a line in the list view for each selected file. Don't allow for the same file to appear twice.
    if (listView1.FindItemWithText(fontFileName) == null)
    {
        ListViewItem lvi = new ListViewItem(fontFileName);
        lvi.SubItems.Add(i.ToString());
        listView1.Items.Add(lvi);
        count++;
    }
}