ListView的错误C＃ [英] listview error c#

问题描述

我有一个ListView。我想从它的第一个元素，然后调用一个方法。问题是，虽然我已经在我不知道为什么下面的代码不工作时，我要选择的元素列表视图的元素。需要帮助。 THX

  listview.Items [0] .Selected = TRUE; 
 listview.Select（）; 
 INT C = listview.SelectedItems.Count; 
 MessageBox.Show（C +：与：+ listview.Items [0]的ToString（））; .//here的C = 0，它应该是1 :( 
 // Thread.sleep代码（3000）; 
法（）; 
  

我有：

  ListViewItem的IT =新的ListViewItem（一）; 
 it.SubItems.Add（S）; 
 it.SubItems.Add（v）; 
 it.Tag =调用; 
列表视图。 Items.Add（它）; 
  

解决方案

的

  System.Windows.Forms.ListViewItem listViewItem4 =新System.Windows.Forms.ListViewItem（fdasf）; 
系统。 Windows.Forms.ListViewItem listViewItem5 =新System.Windows.Forms.ListViewItem（sdfsadf）; 
 System.Windows.Forms.ListViewItem listViewItem6 =新System.Windows.Forms.ListViewItem（gdsgdfg）; 
  

和

  this.listView1.Items.AddRange（新System.Windows.Forms.ListViewItem [] {
 listViewItem4，
 listViewItem5，
 listViewItem6}）; 
 this.listView1.Location =新System.Drawing.Point（84，88）; 
 this.listView1.Name =ListView1的; 
 this.listView1.Size =新System.Drawing.Size（121，97）; 
 this.listView1.TabIndex = 0; 
 this.listView1.UseCompatibleStateImageBehavior = FALSE; 
 this.listView1.View = System.Windows.Forms.Vi​​ew.List; 
  

这个工程，c为1

  listView1.Items [0] .Selected = TRUE; 
 listView1.Select（）; 
 INT C = listView1.SelectedItems.Count; 
 MessageBox.Show（C +：与：+ listView1.Items [0]的ToString（））; 
 // Thread.sleep代码（3000）; 
法（）; 
  

这个问题可能是在其他地方。

I have a ListView. I want to select the first element from it and then invoke a method. The thing is that though i have the element in the listview I dont know why the following code is not working when i want to select the element. need help. thx

listview.Items[0].Selected = true;
listview.Select();
int c =listview.SelectedItems.Count;
MessageBox.Show(c + ": and : " + listview.Items[0].ToString()); .//here the c=0 and it should be 1:(
//  Thread.Sleep(3000);
method();  

I have:

ListViewItem it = new ListViewItem("a");
it.SubItems.Add("s");
it.SubItems.Add(""v");
it.Tag = call;
listview.Items.Add(it);

解决方案

for

System.Windows.Forms.ListViewItem listViewItem4 = new System.Windows.Forms.ListViewItem("fdasf");
System.Windows.Forms.ListViewItem listViewItem5 = new System.Windows.Forms.ListViewItem("sdfsadf");
System.Windows.Forms.ListViewItem listViewItem6 = new System.Windows.Forms.ListViewItem("gdsgdfg");

and

this.listView1.Items.AddRange(new System.Windows.Forms.ListViewItem[] {
    listViewItem4,
    listViewItem5,
    listViewItem6});
this.listView1.Location = new System.Drawing.Point(84, 88);
this.listView1.Name = "listView1";
this.listView1.Size = new System.Drawing.Size(121, 97);
this.listView1.TabIndex = 0;
this.listView1.UseCompatibleStateImageBehavior = false;
this.listView1.View = System.Windows.Forms.View.List;

this works and c is 1

listView1.Items[0].Selected = true;
listView1.Select();
int c =listView1.SelectedItems.Count;
MessageBox.Show(c + ": and : " + listView1.Items[0].ToString());
//  Thread.Sleep(3000);
method();  

The problem is probably somewhere else.

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