识别使用枚举作为值检查哪个单选按钮

Question

I'm struggling with WinForms. I have a GroupBox which wraps three RadioButton s. I added them using the design view and inside the constructor I tag every button to corresponding enum value like

public MyApp()
{
   radioBtnBasic.Tag = UserChoiceEnum.Basic;
   radioBtnLite.Tag = UserChoiceEnum.Lite;
   radioBtnStandard.Tag = UserChoiceEnum.Standard;
}

Inside my class I have property property of type Dictionary which uses this enum as a key, so I want when the user clicks on winform button to recognize which radio button is checked and to assign to that dictionary.

I've found how to fetch checked option

var choice = grpBox1.Controls.OfType<RadioButton>().FirstOrDefault(x => x.Checked);

Do I need to use switch statement to recognize which Enum is checked or is there some better way?

Answer 1

You get the UserChoiceEnum by:

RadioButton choice = grpBox1.Controls.OfType<RadioButton>().FirstOrDefault(x => x.Checked);
UserChoiceEnum userChoice = (UserChoiceEnum)choice.Tag;

Answer 2

If you set Tag you can simply get it back whenever you need. Note that you need to cast it to original type. Something like:

var choiceAsEnum = (UserChoiceEnum)choice.Tag;

Answer 3

created enum :

public enum SearchType
{
    ReferenceData = 0,
    Trade = 1,
}

Then use SelectedIndexChanged event of radioGroup control.

private void RadioTypes_SelectedIndexChanged(object sender, EventArgs e)
{
      if (this.RadioTypes.SelectedIndex < 0) return;
      SearchType n = (SearchType)this.RadioTypes.SelectedIndex;

      switch (n)
      {
           case SearchType.ReferenceData:
           break;

           case SearchType.Trade:
           break;
      }
}