Radio Buttons - How Do I Make Them Stay Checked When On Another Form?

There are many ways to do it.

1. Create an independant class outside of both forms in your project.

2. In this class, create your own schema of writing values and reading values from the class.

On the form_Closed event of one form, it will write to this class...and the FormLoad event of the next form will read the value from the class.

Note: These settings will only be available at runtime unless you find a clever way to set My.Setting.

Does this make sense?

Adamus

AdamusTurner at 2007-10-3 >

hi mate,

thanks for the quick reply,

i will try your suggestions and let you know how i get on

many thanks

luke

karate_kid007 at 2007-10-3 >

bdbodger wrote:

another way is with property binding to a setting in my.settings . You can either create the setting first on the settings tab of your project properties page or do it this way . Choose your radiobutton and then in the property grid drop down the application settings at the top . Click in the space beside property binding . In the small property grid that opens up scroll to the checked property and click in the space beside it . Drop the dropdown box down and you will see a small box with new at the bottom . If you premake settings they should be on the list if they are the right type if not press the new link and create a new setting . Leave the scope as user and give your setting a name and possibly a default value but that is not needed . Save that and then the checked property of your radiobutton will be bound to that setting . In your project settings make sure you have save settings on exit checked . Just to be sure create a sub for the check changed event of the radiobutton(s) and put my.settings.save in it to save the settings right away . You need a separete setting for each radiobutton . As long as you make sure the setting was saved you can read it's value even if the other form is closed by reading it from my.settings . I mean if the setting name was RB1 then you can see if my.settings.RB1 is true or false . For some items like a radio button just below property binding in the property grid in application setting there is some common properties already there waiting to se be set . For a radio button the checked property and the text property are there . That is quicker then clicking on the property binding and useing the small grid to scroll to those properties .

hi mate, this does the trick brilliantly, thank you for your time and advice.

the only other thing is that when i go to check the radio button to change its status i have to click it twice for it to change its check state, the first time i click it sets all radiobuttons to unchecked and then when i click again it it checks the one selected any ideas as to how i can make it change first time. thanks

karate_kid007 at 2007-10-3 >

I'm afraid this solution doesn't work at all for me. Not only is there the problem with having to click twice to change a button but the settings are not reloaded correctly when the form reloads.

I found it much simpler to use a single String Setting called "Button" and add the following code:

Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged, RadioButton2.CheckedChanged, RadioButton3.CheckedChanged, RadioButton4.CheckedChanged

Dim RB As RadioButton = CType(sender, RadioButton)

If RB.Checked Then

My.Settings.Button = RB.Name

End If

End Sub

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

CType(Controls(My.Settings.Button), RadioButton).Checked = True

End Sub

Dave299 at 2007-10-3 >

You don't say where you get the error but I presume it is on this line:

CType(Controls(My.Settings.Button), RadioButton).Checked = True

If so it will be because you didn't set a default value when you created the setting. Put in a default value of RadioButton1 (or 2,3, or 4) and you should find it works ok.

If you want other code in the CheckedChanged event handlers then you have three options

1. Add the code above to all the handlers.

2. Put the code in a separate sub and call it from all the handlers

3. Use AddHandler to add the sub you made in 2 to all the radiobuttons

The setting is "standalone" - you don't need to bind it to the radiobuttons as you did in the other solution.

Dave299 at 2007-10-3 >

hi dave229,

why are the easy things so difficult? i've been trying for ages to get the checkbox to work but can i, no...

all i want it to do is on the settings form which all the radiobuttons are located to have a checkbox which will either make the radiobuttons enabled or disabled, i've managed to make the turn on and off using the checkbox checkchanged event, and ive set up another setting called music_status, its a boolean and the value is set to true,

i have it so when it is unchecked the value of music_status is false and there for disables the radiobuttons, i've made sure i save the settings of the form close event but when i load it again the radiobuttons are not disabled

bascally its not saving the setting music_status

any ideas.

cheers

karate_kid007 at 2007-10-3 >

dave 299,

thanks once again, the code worked perfectly, i really appreciate the time you have spent helping me through out this project,

cheers

luke

karate_kid007 at 2007-10-3 >