radiobutton-函數不會在所有代碼路徑上都返回值。當使用結果時，可能會在運行時發生 null 引用異常

函數不會在所有代碼路徑上都返回值。當使用結果時，可能會在運行時發生 null 引用異常

函數代碼為：

 Function result_ss() As String
        If RadioButton_ss1.Checked = True Then result_ss = "1"
        If RadioButton_ss2.Checked = True Then result_ss = "2"
    End Function

求大神幫忙

最佳回答：

 Function result_ss() As String
        If RadioButton_ss1.Checked = True Then result_ss = "1"
        If RadioButton_ss2.Checked = True Then result_ss = "2"
    End Function
        改
        Function result_ss() As String
            result_ss = "";
        If RadioButton_ss1.Checked = True Then result_ss = "1"
        If RadioButton_ss2.Checked = True Then result_ss = "2"
    End Function