Defining color as static variable

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Hello. I would like to make a button which can change color of all background grids in my app.

I just know that this function changes color of actual grid:

LayoutRoot.Background = new SolidColorBrush(Colors.Blue);

Now, how to store this color value as a static value? I mean, after click, color value will be stored.

How to retrieve this value while every new page loads?

How can I store this value in isolated storage?

I know I should make a class with a static variable.
I am newbie in programming, so can someone tell me how to program page, where button will be placed and class.vb page?
Maybe it sounds weird, but I understand everything better basing on examples.

Posted 15-Dec-12 7:00am

Dawid Lis

Updated 15-Dec-12 7:01am

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StackQ 15-Dec-12 13:40pm

provide code,and comment at place where u want solution.

Dawid Lis 15-Dec-12 13:47pm

This is the page where button should be placed

Imports System.Windows.Media
Partial Public Class Settings
Inherits PhoneApplicationPage

Public Sub New()
InitializeComponent()
End Sub

Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
LayoutRoot.Background = New SolidColorBrush(Colors.Red)
End Sub
End Class

About the class; actually it's empty, because I'm not sure what I should place there;

Public Class Kolor

End Class

StackQ 15-Dec-12 13:54pm

r u want to store colour name or it's value?Why?Bcoz u r giving manually:-Colors.Red
Then u can do it like:-

Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
LayoutRoot.Background = New SolidColorBrush(Colors.Red)
Dim Color as String="Red" //actually what u want i m not getting
End Sub

Elaborate more,and why u want to use class?

Dawid Lis 15-Dec-12 14:00pm

Ok, I'll try to explain it.
I got such a help from microsoft forum (about class).
It's kind of a theme changer. There will be a few buttons, each can change color of all grids in all pages to this one color he applied. ex. user clicks button white, it changes all backgrounds colors in all pages for white. etc
I need to store somewhere this color variable, when user restarts app, variable restores and all grids change automatically.
I was thinking about loading page and everytime the page loads, the grid reads color from "somewhere" and applies it to its grid.

If you have any better idea, please share :)

StackQ 15-Dec-12 14:26pm

check again

Dawid Lis 15-Dec-12 14:30pm

1. I can't make function. I'm using visual studio express 2010 for Windows phone and there is no option to create function. Just class,module,code file,text file and xml file.

2. Did you create this button to change colors randomly?

StackQ 15-Dec-12 14:31pm

k

Dawid Lis 15-Dec-12 15:11pm

ahhh sorry,my fault. I pasted the first code inside class and it is ok. Just it gives me an error ;Argument not specified for parameter 'b' of 'Public Shared Function FromArgb(a As Byte, r As Byte, g As Byte, b As Byte) As System.Windows.Media.Color'.

And I'm still wondering, why you specifed color as random... Can you make a code for button ,which changes variable color to another?

Please, program these two buttons. One to change color of grids to blue, and the second to change the colors of grids to red.

Imports System.Windows.Media
Partial Public Class Settings
Inherits PhoneApplicationPage

Public Sub New()
InitializeComponent()
End Sub

Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click

End Sub

Private Sub Button2_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button2.Click

End Sub
End Class

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StackQ · Answer 1 · 2012-12-15T08:25:00

1st:-Make a function to generate random color

VB

Private Function CreateRandomColor() As Color
    Dim randonGen As New Random()
    Dim randomColor As Color = Color.FromArgb(randonGen.[Next](255), randonGen.[Next](255), randonGen.[Next](255))

    Return randomColor
End Function

Imports System.Windows.Media
Partial Public Class Settings
    Inherits PhoneApplicationPage

    Public Sub New()
        InitializeComponent()
    End Sub

    Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
Dim color As Color 
color= CreateRandomColor()
 While (color != White or Red or Blue or Green) 'Specify color names u want 
        LayoutRoot.Background = New SolidColorBrush(color)
color = CreateRandomColor()
End While
    End Sub
End Class

Defining color as static variable

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