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reset button background color - c#

Posted on 2014-07-29
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Last Modified: 2014-07-29
I have used the following to reset button color:

Note that btn12 has no settings (its blank and gets its style from a css file). So instead of: btn.BackColor = ""; or btn.BackColor = null; I have used btn.BackColor = btn12.BackColor;

At line 14 (var c = btn12.BackColor;) no settings for btn12 reads c="{Name=0, ARGB(0,0,0,0)}", and
At line 15 (c = btn.BackColor;) the settings for the current btn reads c="{Name=Orange, ARGB(255,255,165,0)}",

Question: Can I then replace line 5 (btn.BackColor = btn12.BackColor;) with:

btn.BackColor = "{Name=0, ARGB(0,0,0,0)}";

Because neither of btn.BackColor = ""; or btn.BackColor = null; work.

Thank you.
 int i;
       for (i = 1; i < 11; i++)
        {
            Button btn = (Button)this.FindControl("btn" + i.ToString());
           btn.BackColor = btn12.BackColor;
        }


        if (Session["pressedButton"] != null)
        {
            string strButton = Session["pressedButton"].ToString();
            Button btn = (Button)this.FindControl(strButton);
            btn.BackColor = Color.Orange;
            var c = btn12.BackColor;
            c = btn.BackColor;
        }

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Question by:Mike Eghtebas
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7 Comments
 
LVL 21

Expert Comment

by:Randy Poole
ID: 40227274
You would use something of this sort, or System.Drawing.Color.Orange if you want to reference by name.
btn .BackColor = System.Drawing.Color.FromArgb(0, 0, 0, 0);

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Author Comment

by:Mike Eghtebas
ID: 40227327
Hi Randy,

This gives black background to the buttons. It doesn't clear its backcolor property. I understand your logic but there has to be something else.

{Name=0, ARGB(0,0,0,0)}   <-- name argument is not set to zero in your code and I don't know how this part is done.

Mike
0
 
LVL 21

Expert Comment

by:Randy Poole
ID: 40227346
that will give A black, rgb 000 is black if your trying to clear it, (make it transparent)
btn.BackColor = System.Drawing.Color.Transparent;

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LVL 34

Author Comment

by:Mike Eghtebas
ID: 40227365
btn.BackColor = System.Drawing.Color.Transparent;

makes it transparent. It is not the same as nothing set.

Therefore, transparent setting doesn't allow css setting work. It just makes the buttons transparent.

Mike
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Accepted Solution

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Randy Poole earned 500 total points
ID: 40227409
Hmm.
You can also try one of these:
btn.BackColor = System.Drawing.Color.FromName("0");

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or
btn.BackColor = System.Drawing.Color.Empty;

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or
btn.BackColor = System.Drawing.Color.FromName(null);

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LVL 34

Author Comment

by:Mike Eghtebas
ID: 40227460
First two work okay:

btn.BackColor = System.Drawing.Color.FromName("0");
btn.BackColor = System.Drawing.Color.Empty;


but not the last:
btn.BackColor = System.Drawing.Color.FromName(null);

Thanks,

Mike
0
 
LVL 21

Expert Comment

by:Randy Poole
ID: 40227583
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