Visual Basic 中的两个“预期表达式”错误

Question

我使用的是 Visual Basic 2008。我去发布我的项目时，遇到了两个“预期表达式”错误。我对 Visual Basic 很陌生 - 我昨晚刚开始。代码：

Public Class Form1

Private Sub WebBrowser1_DocumentCompleted(ByVal sender As System.Object, ByVal e As System.Windows.Forms.WebBrowserDocumentCompletedEventArgs)
    WebBrowser1.Navigate("www.zudostudios.com")
End Sub

Private Sub GoBtn1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
    WebBrowser1.Navigate(addressTxt.Text)
End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

End Sub

Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addressTxt.TextChanged

End Sub

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addressTxt.TextChanged
End Sub

Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

End Sub

Private Sub Button3_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
    WebBrowser1.Navigate("www.zudostudios.com")
End Sub

Private Sub Label1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)      Handles Label1.Click

End Sub
End Class

Answer 1

这是复制粘贴错误。

您已经实现了以下代码。

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles addressTxt.TextChanged
End Sub

但是当调用 TextBox1_TextChanged 方法时，Handles addressTxt.TextChanged 是没用的。

正确的代码应该是：

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
    TextBox1_TextChanged(sender, e)
End Sub