CODEWITHSUNDEEP
c#asp.nethtml
Hithere Paperbag
Hithere Paperbag

Reputation: 2828

Convert Drawing.Color into HTML color value

I asked a question about this already, but I wrong-phrased it.

I have a method GetRandColor() on the server that returns a System.Drawing.Color object.

What I want is to be able to set html attributes using this when the page loads. So as an example, 

<html>
<body bgcolor="#GetRandColor()">
<h1>Hello world!</h1>

</body>
</html>

Upvotes: 9

Views: 19097

Answers (5)

Vishal Suthar
Vishal Suthar

Reputation: 17194

You can do that with the help of inline expression: Inline expressions in the .NET Framework

Displaying expression (<%= ... %>)

bgcolor="<%= System.Drawing.ColorTranslator.ToHtml(GetRandColor()) %>"

Upvotes: 2

Srinivas
Srinivas

Reputation: 1063

You can use ColorTranslator to convert Drawing.Color to HTML color value. For example,

System.Drawing.Color c = System.Drawing.ColorTranslator.FromHtml("#F5F7F8"); 

String strHtmlColor = System.Drawing.ColorTranslator.ToHtml(c);

This link will help you too : msdn.microsoft.com/en-us/library/system.drawing.colortranslator.fromhtml.aspx

Upvotes: 1

Icarus
Icarus

Reputation: 63970

You can't return a System.Drawing.Color object from your function because browsers only understand text. So instead, you should return the string representation of the color, be in RGB, HEX format or what have you.

Your method then should look like this:

 protected string GetRandColor()
 {
     return ColorTranslator.ToHtml(Color.Red);
 }

And you can set the background of your form as so:

<body style="background-color:<%=GetRandColor()%>;">

Upvotes: 23

JLRishe
JLRishe

Reputation: 101778

If GetRandColor() is in a static class, this should work:

<body bgcolor="<%= System.Drawing.ColorTranslator.ToHtml(ClassName.GetRandColor()) %>">

You may need to add the class' namespacess before the class name.

Upvotes: 2

ryudice
ryudice

Reputation: 37466

public string GetRandHtmlColor(){

    System.Drawing.Color c = GetRandColor();
    return System.Drawing.ColorTranslator.ToHtml(c);
}

Upvotes: 0

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