How to Change Form background color in C#

Question

I am using following code in form_load event to change Form.BackgroundColor, but it is giving me an error.

Control does not support transparent background colors.

Here is what I am trying...

private void Form1_Load(object sender, EventArgs e)
{
  string sColor = "#ACE1AF";// Hex value of any color
  Int32 iColorInt = Convert.ToInt32(sColor.Substring(1), 16);
  Color curveColor = System.Drawing.Color.FromArgb(iColorInt);
  this.BackColor = curveColor;
 }

I found the same question (Why am I getting "Control does not support transparent background colors"?), but is not met my requirement due to in this Color class is using its default values.

I find same question http://stackoverflow.com/questions/9358500/winforms-making-a-control-transparent — isxaker, Feb 06 '15 at 08:23
I am not trying to make form transprent, I want to change only color from Hex value — Imran Ali Khan, Feb 06 '15 at 08:24
@isxaker please make it as answer, so i can Accept it. its worked for me — Imran Ali Khan, Feb 06 '15 at 08:31

score 2 · Answer 1 · answered Feb 06 '15 at 08:32

The problem is, you are trying to make the background transparent. The color you specify in ARGB is 100% transparent. Hence the error.

You should use:

void Form1_Load(object sender, EventArgs e)
{
    string sColor = "#FFACE1AF";// Hex value of any color
    Int32 iColorInt = Convert.ToInt32(sColor.Substring(1), 16);
    Color curveColor = System.Drawing.Color.FromArgb(iColorInt);
    this.BackColor = curveColor;
}

Setting the alpha channel to FF.

score 2 · Accepted Answer · edited Feb 06 '15 at 10:50

2

ColorTranslator.FromHtml("#00FEF2D4");

Edit : ColorTranslator.FromHtml Translates an HTML color representation to a GDI+ Color structure.

Parameters

htmlColor

Type: System.String

The string representation of the Html color to translate.

Return Value

Type: System.Drawing.Color

The Color structure that represents the translated HTML color or Empty if htmlColor is null.

edited Feb 06 '15 at 10:50

Imran Ali Khan

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answered Feb 06 '15 at 08:41

isxaker

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2

Please explain your code (even if it's really simple) or provide the reference to your function. Code-only answer is discouraged since it may confuse not only OP, but also future readers. – Andrew T. Feb 06 '15 at 08:58

How to Change Form background color in C#

2 Answers2