Button background colour

I need to change the background colour of a button using C# code (Visual Studio 2008).

I saw some people recommending the inclusion of a directive: using System.Windows.Media; – I tried it and it triggered this error: Windows does not exist in namespace System. I tried several combinations like:

 btn.BackColor = Color.Red;
 btn.Background = Brushes.Green;

And neither is working. Is a special directive needed for using colour? What code do you suggest. Thanks a lot.

Answers:

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Method 1

This should change your button background color to Red

yourButtonName.BackColor = Color.Red;

You need to include System.Drawing namespace as Color class belongs to that. Like this

using System.Drawing;

And ofcourse you need to add the reference to System.Drawing DLL in your project to use this namespace and Color class.

Method 2

Button1.BackColor = System.Drawing.Color.Red;

Method 3

using System.Drawing;

allows you to use

Color.Red;

Method 4

try this

button.BackColor = Color.Red

Method 5

Although that property is technically available to all WebControls, it may be ignored for buttons (I haven’t confirmed). This, of course, is assuming your project is ASP.NET. Having said that, if it DOES happen to work for you, I highly advise that you test this in other browsers as it may be MS specific.

From MSDN:

This property will render for only certain controls. For example,
Table, Panel, DataGrid, Calendar, and ValidationSummary will render
this property. It will also work for CheckBoxList, RadioButtonList and
DataList if their RepeatLayout property is RepeatLayout.Table, not
RepeatLayout.Flow.

Source: WebControl.BackColor Property

However, a more flexible and widely practiced method of achieving this is to use CSS.

Method 6

On PageLoad try this,

Button1.Style.Add("background-color", "green");

Use a method to write a condition when you want to change the color of the button. if condition is true use above code to change the color of the button as you prefer.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0