Radio buttons not binding correctly

Question

Hello there I've encountered a strange problem in my application that involves the binding of radio buttons.  I thought maybe the problem was unique to my application so I created a dumbed down version of the problem and I get the same result.

I create a custom data set with 3 columns called (one, two three).

I create an instance of this data set on my form.

I create 3 radio buttons and bind the checked property to their respective columns.

When I run the program the radioButton1 is checked.  I then click radioButton 2 setting RB2 to true and RB1 to false.

 

However if I look at the data set I see that Column 1 is true and so is Column 2 when I would expect column 1 to be false if binding was working correctly.

Am I incorrect in assuming this?

Answer 1

Is this a Windows Forms, Web Forms, WPF or silverlight question?

You probably want to post to the class library forums to get more interest.

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Answer 2

This is a Windows Forms question.  I will take your advice on posting in a more correct forum thank you.

Answer 3

The Windows Forms forums are at http://social.msdn.microsoft.com/Forums/is/category/windowsforms

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Answer 4

Hello there I've encountered a strange problem in my application that involves the binding of radio buttons.  I thought maybe the problem was unique to my application so I created a dumbed down version of the problem and I get the same result.

I create a custom data set with 3 columns called (one, two three).

I create an instance of this data set on my form.

I create 3 radio buttons and bind the checked property to their respective columns.

When I run the program the radioButton1 is checked.  I then click radioButton 2 setting RB2 to true and RB1 to false.

 

However if I look at the data set I see that Column 1 is true and so is Column 2 when I would expect column 1 to be false if binding was working correctly.

Am I incorrect in assuming this?

Answer 5

Hi CommanderKeen,

Any code do you use to set the bindings? Below is my code to test the bindings on the RadioButtons:

    DataSource data = new DataSource();
    public Form1()
    {
      InitializeComponent();
      radioButton1.DataBindings.Add(new Binding("Checked", data, "Value1", false, DataSourceUpdateMode.OnPropertyChanged));
      radioButton2.DataBindings.Add(new Binding("Checked", data, "Value2", false, DataSourceUpdateMode.OnPropertyChanged));
      radioButton3.DataBindings.Add(new Binding("Checked", data, "Value3", false, DataSourceUpdateMode.OnPropertyChanged));
    }

....

 public class DataSource
  {
    public bool Value1 { get; set; }
    public bool Value2 { get; set; }
    public bool Value3 { get; set; }
  }

Sincerely,

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Answer 6

The code I use is like this:

 

 private PASport.Proxy.StrongTypesNS.pdcReceiptDataSet pdcReceipt = new PASport.Proxy.StrongTypesNS.pdcReceiptDataSet );
  public Form1()
  {
   InitializeComponent();
   this.rbtCheque.DataBindings.Add(new System.Windows.Forms.Binding("Checked", this.pdcReceipt, "ttcReceipt.Cheque", true, System.Windows.Forms.DataSourceUpdateMode.OnPropertyChanged, "false"));
this.rbtNoPayment.DataBindings.Add(new System.Windows.Forms.Binding("Checked", this.pdcReceipt, "ttcReceipt.EFT", true));
}

 

Where pdcReceipt is a custom DataSet

 

I will try your code to see if there is a difference. Thank you.

Answer 7

CommanderKeen, Bob_Bao PerkinElmer (MVP)  you are both right.

I fix your code (apply "false" as last parameter:

    DataSource data = new DataSource();
    public Form1()
    {
      InitializeComponent();
      radioButton1.DataBindings.Add(new Binding("Checked", data, "Value1", false, DataSourceUpdateMode.OnPropertyChanged, false));
      radioButton2.DataBindings.Add(new Binding("Checked", data, "Value2", false, DataSourceUpdateMode.OnPropertyChanged, false));
      radioButton3.DataBindings.Add(new Binding("Checked", data, "Value3", false, DataSourceUpdateMode.OnPropertyChanged, false));
    }

Answer 8

Without setting it in another way is the radio button a toggle button. 

Only one in a container can be on. All others are always off. 

You describe in fact a checkbox, where every checkbox can have its value. 

If you want to use radiobuttons in a checkbox way then set the property autocheck property to false.

http://msdn.microsoft.com/en-us/library/system.windows.forms.radiobutton.autocheck(v=vs.110).aspx

(Be aware that using a button as checkbox can confuse end users).

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