Color will have appropriate R G B values. For example, if you accept user input and the user types the word "white", you can convert this into a real color and use it in your program or obtain its ARGB value using the Color.FromName method. You may have to convert from a string to a color type. You can use many known colors using the named properties of the Color type. By adding a reference to the System.Drawing to use the color class. Let's take a look at a practical example. Now drag and drop two DropDownList controls from the Toolbox to the page one is for the foreground color and the second one is used to change the background color. NET and make a new ASP.NET web site using Visual Studio 2010. We drag and drop two DropDownList controls onto the form one is for the foreground color and the second one is used to change the background color and also drag and drop a Label control for showing the changing color effect. Here, we use the color class to change the color of text using a DropDownList. There are many ways in which a user can change the color of text using a DropDownList. The above example tells the Graphics object to draw a rectangle at coordinates x=20, y=30 of height and width equal to 100.Today, I have provided an article showing you how to change the color of text using a DropDownList in ASP. The next step is to use the brush to draw a shape: Private Sub Form1_Paint(ByVal sender As Object, ByVal e As )Į.Graphics.FillRectangle(blueBrush, 20, 30, 100, 100)
In the above code we have created a new SolidBrush drawing object using color blue and assigned it to variable blueBrush. The next task is to create a paintbrush with which to paint: Private Sub Form1_Paint(ByVal sender As Object, ByVal e As )ĭim blueBrush As New Drawing.SolidBrush(Color.Blue) Once selected, Visual Studio will display the Paint event subroutine. From the pull-down list, select the Paint event as shown below (if you are using Visual Studio 2008 the events are accessed by clicking on the lightning bolt above the properties list): Begin by double clicking on the new Form in the Visual Studio project to access the event procedure code for the form control.
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