在赋值前被使用.可能会在运行时导致空引用异常

[AddForce]

Dim array1() As String

For i = 0 To lstOne.Items.Count - 1
array1(i) = lstOne.Items(i).ToString
Next

变量"array1"在赋值前被使用.可能会在运行时导致空引用异常


要怎么解决呢?

[tjficcbw]

        Dim array1() As String
        Dim i As Integer = 0
        ReDim array1(lstOne.Items.Count)

        For i = 0 To lstOne.Items.Count - 1
            array1(i) = lstOne.Items(i).ToString
        Next

[MyLadyViola]

Dim array1 As new arraylist
Dim i As Integer = 0


For i = 0 To lstOne.Items.Count - 1
array1(i) = lstOne.Items(i).ToString
Next

[lee13688]

Try...Catch...Finally 控制结构是结构化异常处理的基本结构。它测试代码片段，筛选该代码执行过程中产生的异常，并根据产生的异常类型做出不同的响应。

[qinboody]

[Quote=引用 2 楼 MyLadyViola 的回复:]
Dim array1 As new arraylist
Dim i As Integer = 0


For i = 0 To lstOne.Items.Count - 1
array1(i) = lstOne.Items(i).ToString
Next
[/Quote]

[bwch_xm]

一楼的是正解 支持

[zijiaobingbu]

一楼的正确

[veeje]

一楼的是正解 支持