vb.net 显示数组/列表的内容
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Display content of the array/list
提问by Lucas
I'm looking for a way to display (in the MsgBoxor other read-able place) the array/list content, the listcontains only strings:
我正在寻找一种方法来显示（在MsgBox或其他可读的地方）数组/列表内容，list只包含字符串：
Dim list As New List(Of String)
Dim list As New List(Of String)
I would like to display the content of it in the MsgBoxfor now. I can convert the listto the arrayif there would be a need. Is there a way to do this?
我想暂时显示它的内容MsgBox。我可以转换list到array是否会有需要。有没有办法做到这一点？
回答by SysDragon
You can declare a variable and loop the array putting every element inside:
您可以声明一个变量并循环数组，将每个元素放入其中：
Dim sResult As String = ""
For Each elem As String In list
sResult &= elem & " "
Next
Or you can use String.Join()to directly merge all the elements of the array (you will need to convert the Listto a normal array if using .NET framework before 4.0):
或者您可以使用String.Join()直接合并数组的所有元素（List如果使用 4.0 之前的 .NET 框架，则需要将其转换为普通数组）：
Dim sResult As String = String.Join(", ", list.ToArray())
回答by Steve
How many elements are in that List? If they are few then a MessageBox could do
该列表中有多少个元素？如果它们很少，那么 MessageBox 可以做
Dim message = string.Join(Environment.NewLine, list.ToArray())
MessageBox.Show(message)
If there are many, then you need some kind of interface to display everything.
In this case you need at least a WinForm application with your user defined Form that contains a TextBox with its multiline property set to true.
如果有很多，那么您需要某种界面来显示所有内容。
在这种情况下，您至少需要一个 WinForm 应用程序，其中包含一个多行属性设置为 true 的 TextBox 的用户定义表单。
Dim message = string.Join(Environment.NewLine, list.ToArray())
textBox1.Text = message
Here a reference to MSDN docs on List(Of T)
