VB.NET初学遇到代码抛表达式预期错误，原因何在？

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我是开发新手，在尝试编译下面的代码时，收到了错误Expression Expected。我究竟犯了什么错误？

csharpPublic Class Form1 Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCom

错误提示可能是由于代码中的 `btnCom` 后面缺少了 `_Click` 方法。正确的代码应该是：

csharpPublic Class Form1 Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click

我是开发新手,在尝试编译下面的代码时收到错误“Expression Expected”.我究竟做错了什么？

Public Class Form1 Private Sub btnCompute_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCompute.Click Dim Occupation As String = CStr(txtOccupation.Text) Dim Bill As Double = CDbl(txtBill.Text) Dim Tip As Double = CDbl(txtTip.Text) lstOutput.Text = Bill * (1 + if (Tip<1,Tip,Tip/100)) End Sub End Class 我猜测最后一行正在抛出异常

lstOutput.Text = Bill * (1 + if (Tip<1,Tip,Tip/100))

你在if … then语句中使用了“if”,但我打赌你的意思是iif,这是一个函数

lstOutput.Text = Bill * (1 + IIf (Tip<1,Tip,Tip/100))

只需添加一个额外的“我”,你应该没事

Article explaining the difference between “IF” and “IIF()”