vb.net - 创建表单时出错。有关详细信息，请参阅 Exception.InnerException。错误是 : Object reference not set to an instance of an object

Question

尝试调试表单时出现此错误，我看不到错误可能在哪里(也没有突出显示位置)，有人有什么建议吗？

An error occurred creating the form. See Exception.InnerException for details. The error is: Object reference not set to an instance of an object.

Dim dateCrap As String = "Date:"
Dim IPcrap As String = "Ip:"
Dim pcCrap As String = "Computer:"
Dim programCrap As String = "Program:"

Dim textz As String
Dim sep() As String = {vbNewLine & vbNewLine}
Dim sections() As String = Text.Split(sep, StringSplitOptions.None)

Dim NewArray() As String = TextBox1.Text.Split(vbNewLine)


Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    textz = TextBox1.Text
End Sub

Answer 1

错误在这里:

Dim textz As String = TextBox1.Text

和这里:

Dim NewArray() As String = TextBox1.Text.Split(vbNewLine)

可能在这里:

Dim sections() As String = Text.Split(sep, StringSplitOptions.None)

你不能像这样初始化一个成员，因为这段代码基本上是在构造函数中执行的， 之前 TextBox1 (或任何其他控件/属性)被初始化，因此它是 Nothing .

将所有引用控件的初始化放在 Form_Load 中事件 - 这就是它的目的。