在Microsoft Visual Studio 2012中使用單選按鈕-編碼錯誤

Question

出於某種原因，當我調試時第一個“ If”語句起作用，但是當我嘗試使用任何其他單選按鈕或使用相同的按鈕但嘗試使第二個“ If”語句為真時，我單擊了“計算獎勵積分”按鈕，但是不計算。 它僅計算第一個“ If”語句。 這是我的代碼。 如果我的行話達不到標准，我深表歉意。 我上這堂課是因為這是必需的。 我隨隨便便

公開課表格1

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    Const basic1 As Double = 0.03
    Const basic2 As Double = 0.05
    Const basic3 As Double = 0.08
    Const basic4 As Double = 0.1
    Const basic5 As Double = 0.15
    Dim totalLabel As Double
    Dim doubleReward As Double

    Double.TryParse(RewardDisplay.Text, doubleReward)
    Double.TryParse(TotalTextBox.Text, totalLabel)

    If basicRadioButton.Checked AndAlso totalLabel < 100 Then
        RewardDisplay.Text = totalLabel * basic1
    ElseIf basicRadioButton.Checked AndAlso totalLabel < 200 or >= 100 Then
        RewardDisplay.Text = totalLabel * basic2
    ElseIf basicRadioButton.Checked AndAlso totalLabel >= 200 Then
        RewardDisplay.Text = totalLabel * basic3
    ElseIf standardRadioButton.Checked AndAlso totalLabel < 199 Then
        RewardDisplay.Text = totalLabel * basic3
    ElseIf standardRadioButton.Checked AndAlso totalLabel >= 200 Then
        RewardDisplay.Text = totalLabel * basic4
    ElseIf premiumRadioButton.Checked AndAlso totalLabel < 299 Then
        RewardDisplay.Text = totalLabel * basic4
    ElseIf premiumRadioButton.Checked AndAlso totalLabel >= 300 Then
        RewardDisplay.Text = totalLabel * basic5
    End If
End Sub

Answer 1

您必須在調試模式下查看變量basicRadioButton.Checked和totalLabel的值，以了解該算法為何不符合您的期望。 簡化您的代碼，也許要做一些鏈接

If basicRadioButton.Checked then
     'the totalLabel conditions now
end if

if  standardRadioButton.Checked  then
     'the totalLabel conditions now
end if

if  premiumRadioButton.Checked  then
     'the totalLabel conditions now
end if

這將幫助您找到錯誤。