以编程方式检查ListView中的复选框(Programmatically check a checkbox in ListView)

以编程方式检查ListView中的复选框(Programmatically check a checkbox in ListView)

我试图以编程方式检查一个ListView的复选框（使用VB和.NET 4）。

ListView lvVorschlag已经在设计器中创建，还有三个元素。 然后我执行以下操作：

Dim lviOptimal As New ListViewItem("Optimal") lviOptimal.SubItems.Add(...) 'several SubItems are added lvVorschlag.Items.Add(lviOptimal) lvVorschlag.Items(0).Selected = True

所有SubItems都已正确添加，行lvVorschlag.Items(0).Selected = True不会给我一个错误。 但没有检查。 任何想法为什么？

注意：我也试过使用lvVorschlag.Items("Optimal").Selected = True但它给了我一个错误，说这个对象是Nothing 。 太糟糕了，用名字来指代会更容易。

I am trying to programmatically check a checkbox of a ListView (using VB & .NET 4).

The ListView lvVorschlag has been created in the designer, along with three elements. I then do the following:

Dim lviOptimal As New ListViewItem("Optimal") lviOptimal.SubItems.Add(...) 'several SubItems are added lvVorschlag.Items.Add(lviOptimal) lvVorschlag.Items(0).Selected = True

All the SubItems are correctly added and the line lvVorschlag.Items(0).Selected = True does not give me an error. But nothing is checked. Any idea why?

Note: I also tried with lvVorschlag.Items("Optimal").Selected = True but it gives me an error saying that this object is Nothing. Too bad, referring by name would have been easier.

最满意答案

您应该使用Checked属性来检查您想要的项目：

lvVorschlag.Items(0).Checked = True

You should use the Checked property to check the item(s) you'd like:

lvVorschlag.Items(0).Checked = True