Question

初始化数组的位置发生错误。

我如何使用该阵列？

它必须是一个二维数组的字符......

谢谢....

<StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Ansi, Pack:=1)> _
Public Structure ST_TEST
    <MarshalAs(UnmanagedType.ByValArray, SizeConst:=360)>
    Public 2D_CHAR_ARR()() As Char  '//Array In Struct can not be fixed row&col
End Structure

''''''''''''''''''''''''''''''''''''''''

Dim stTest As ST_TEST
ReDim stTest.2D_CHAR_ARR(60)(60)   ' //throws System.NullReferenceException

Answer 1

出现空引用，因为您定义的数组不是方形数组而是数组数组。要ReDim，你需要写一些类似

的内容

ReDim MyArray(60)

For i As Integer = 0 To 60
    ReDim MyArray(i)(60)
Next i

如果你想要一个正方形数组，你应该声明它

Public MyArray(60, 60)

Answer 2

多维数组

Dim matrix = New Integer(4, 4) {{1, 2}, {3, 4}, {5, 6}, {7, 8}}

锯齿状阵列

Dim sales()() As Double = New Double(11)() {}

来自Arrays in Visual Basic

VB]如何初始化struct

2 个答案: