如何在button_click上选择Listview中的下一个项目

本文介绍了如何在button_click上选择Listview中的下一个项目的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我有一点问题，

i有很多测试用list_click来选择listview中的下一个项目并且没有任何效果...

i have a little problem ,

i have many test to select next item in listview with test_click and nothing works ...

int next = Convert.ToInt32(ctrListviewHalter.FocusedItem.Index) + 1;
                    ctrListviewTest.Items[next].Selected = true;
                    ctrListviewTest.EnsureVisible(next);

出了什么问题

what goes wrong

推荐答案

int next = Convert.ToInt32(listView1.FocusedItem.Index) + 1;
//add this line
 this.listView1.Focus();
 this.listView1.Items[next].Selected = true;

查看参考：

不要忘记可能有 ArgumentOutOfRangeException 错误来自直接添加索引1。所以，尝试按照要求修改代码。

谢谢

Check the reference :
Select an Item in the Windows Forms ListView Control

Don't forget that there may be ArgumentOutOfRangeException error comes as you directly add the index by 1 . so, try to modify the code as per requirement .

thanks

int next_a, next_b;
private void ctrOneForwart_Click(object sender, EventArgs e)
{
  try
  {
    if (ctrListview1.Items.Count &gt; 0)
    {
        next_a = Convert.ToInt32(ctrListview1.FocusedItem.Index);
        if (next_a != -1)
        {
            next_a = -1;
        }
        next_a = Convert.ToInt32(ctrListview1.FocusedItem.Index);
        next_b = next_a - 1;
        ctrListview1.Items[next_b].Focused = true;
        ctrListview1.Items[next_b].Selected = true;
     }
  }
}
catch (Exception) { }
//replace Exception with ArgumentOutOfRangeException or NullReferenzExeption , it's better

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