在 VB.NET 中将字符串生成器转换为字符串数组
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Converting String Builder to Strings Array in VB.NET
提问by user3002885
I have a RadComoboBox with check boxes and I want to loop through the check boxes with String Builder. After getting the values in that format: {1,2,3,4} I want to convert it to stringArray in that format (1,2,3,4) Can anyone please show me how I can do this?
我有一个带有复选框的 RadComoboBox，我想使用 String Builder 遍历复选框。获取该格式的值后：{1,2,3,4} 我想将其转换为该格式的 stringArray (1,2,3,4) 谁能告诉我如何做到这一点？
This is my code:
这是我的代码：
Dim sbPeopleTypes As New StringBuilder()
Dim colGroups As IList(Of RadComboBoxItem) = rcbFilterPersonType.CheckedItems
For Each item As RadComboBoxItem In colGroups
sbPeopleTypes.Append(item.Value + ",")
Next
aspx code:
aspx代码：
<telerik:RadComboBox runat="server"
CheckBoxes="true"
ID="rcbFilterPersonType"
EmptyMessage="Select Person Type" Enabled="True">
</telerik:RadComboBox>
回答by Steven Doggart
You can get the array by using the string's Splitmethod, like this:
您可以使用字符串的Split方法获取数组，如下所示：
Dim myArray() As String = sbPeopleTypes.ToString.Split(","c)
However, unless you need to use the StringBuilder, for some other reason, it would be better to use a list, like this:
但是，除非StringBuilder出于其他原因需要使用 ，否则最好使用列表，如下所示：
Dim peopleTypes As New List(Of String)()
For Each item As RadComboBoxItem In colGroups
peopleTypes.Add(item.Value)
Next
Then, if you really need it as an array, you can convert it like this:
然后，如果你真的需要它作为一个数组，你可以像这样转换它：
Dim myArray() As String = peopleTypes.ToArray()
Even if you did need it formatted as a comma delimited string, you could still build that from the list easily, without a StringBuilder, like this:
即使您确实需要将其格式化为逗号分隔的字符串，您仍然可以轻松地从列表中构建它，而无需StringBuilder，如下所示：
Dim csv As String = String.Join(",", peopleTypes)
Alternatively, since the RadComboBox.CheckedItemsproperty is an IList(Of RadComboBoxItem), you could use the SelectLINQ extension method to get the values as a list or array without the Forloop, like this:
或者，由于RadComboBox.CheckedItems属性是IList(Of RadComboBoxItem)，您可以使用SelectLINQ 扩展方法将值作为列表或数组获取For，而不需要循环，如下所示：
Dim myArray() as String = rcbFilterPersonType.CheckedItems.Select(Function(x) x.Value).ToArray()
