从列表视图中选择指数 [英] Select index from listview

问题描述

我有一些问题让选定行的索引列表视图。我不知道为什么这个代码不工作？我得到的SelectedIndex下方的红线

 私人无效lvRegAnimals_SelectedIndexChanged（对象发件人，EventArgs五）
 {
 INT指数= lvRegAnimals.SelectedIndex; 
串specialData = motelManager.GetInfoFromList（指数）; 
 UppdateSpecialData（specialData）; 
} 
  

帮助是preciated。 ！谢谢

编辑：

由于一些奇怪的原因，我得到两个消息时，我点击线路之一在ListView！？首先，我得对上号，然后最后单击的行数。可能是什么问题？

 私人无效lvRegAnimals_SelectedIndexChanged（对象发件人，EventArgs五）
 {
 INT指数= lvRegAnimals.FocusedItem.Index; 
 MessageBox.Show（Convert.ToString（指数））; 
} 
  

当我说像这样的检查它的工作现在：

 如果（lvRegAnimals.SelectedIndices.Count大于0）
  

解决方案

由于的 ListView控件不包含任何的SelectedIndex ，而不是存在的一个属性将selectedIndices

  VAR指数= lvRegAnimals.SelectedIndices; 
 //指数[0]，你可以用它来访问一个选择的索引
  

< A HREF =htt​​p://msdn.microsoft.com/en-us/library/system.windows.forms.listview.selectedindices.aspx> ListView.SelectedIndices

当MultiSelect属性设置为true，则该属性返回包含在
ListView中选定的所有项目的索引的
集合。对于单选择ListView控件，该属性返回包含只包含ListView中所选项目的
的索引单个元素的
集合。

I'm having some problem to get the index of the selected row in a listview. I wonder why this code isn't working? I get a red line below the SelectedIndex

    private void lvRegAnimals_SelectedIndexChanged(object sender, EventArgs e)
    {
        int index = lvRegAnimals.SelectedIndex;
        string specialData = motelManager.GetInfoFromList(index);
        UppdateSpecialData(specialData);
    }

Help is preciated. Thanks!

EDIT:

For some strange reason I get two messages when I click on one of the lines in the listView!? First I get the previous number and then the number for the last clicked line. What could be wrong?

 private void lvRegAnimals_SelectedIndexChanged(object sender, EventArgs e)
    {
        int index = lvRegAnimals.FocusedItem.Index;
        MessageBox.Show(Convert.ToString(index));
    }

It's working now when I added a check like this:

if(lvRegAnimals.SelectedIndices.Count > 0)

解决方案

Because ListView doesn't contain any SelectedIndex, instead there is a property of SelectedIndices.

var indices = lvRegAnimals.SelectedIndices;
//indices[0] you can use that to access the first selected index

ListView.SelectedIndices

When the MultiSelect property is set to true, this property returns a collection containing the indexes of all items that are selected in the ListView. For a single-selection ListView, this property returns a collection containing a single element containing the index of the only selected item in the ListView.

这篇关于从列表视图中选择指数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！