VB] 如何初始化结构中的第二个数组

Question

初始化数组的地方出错

如何使用该数组？

必须是字符的二维数组...

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

出现空引用是因为您定义的数组不是方形数组，而是数组的数组。要 ReDim 你需要写类似

的东西

ReDim MyArray(60)

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

如果方阵是你想要的，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}}

锯齿状数组

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

来自Arrays in Visual Basic

VB] 如何初始化结构中的第二个数组

VB] How to initialize 2nd array in struct

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