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MVC3 assign variable on every page from single peice of code

Hi experts.

I'm new to MVC3 coming from an asp.net background.

I have a multi page size using razor views and a master layout page.

On the master page is a div that contains a banner image and what i wish to do is change that image depending on what page i go to.

So, what trying to find out is how to run code from the master page to populate a variable on the master page? In asp.net i would normally put query in the master page's .cs file and either push the variable to the front page or pull the variable from the code.

I realise that i could create a public void and call this from the each pages action result, but I'm sure there must be a way to put the code in once and have it called automatically by each page.

Regards
Steve

radcaesar

http://forums.asp.net/t/1207291.aspx

ASKER CERTIFIED SOLUTION

Sammy

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Vipul Patel

Option:1
<img src="@ViewData["masterImage"]" title="src="@ViewData["masterImage"]"" />
Manipulate ViewData in the basecontroller suggested by sammy1971

Option:2
Create HTML helper class

public static MvcHtmlString MasterImage(this HtmlHelper html)
{
/*
Action and Controller name can be found in the html object.
Based on different action return image path and use it below.
Switch(action)
{
case "action1": imagepath = "\image1.jpg"; break
case "action2": imagepath = "\image2.gif"; break

}
*/

var imgBuilder = new TagBuilder("img");
imgBuilder.MergeAttribute("src", url.Content(imagePath));
imgBuilder.MergeAttribute("alt", alt);
string imgHtml = imgBuilder.ToString(TagRenderMode.SelfClosing);

return MvcHtmlString.Create(imgHtml );
}

use in master page
@Html.MasterImage()

fusioninternet

ASKER

Yes basecontroller was the way to go and got it to work as i wnated once I managed to find out where to create a base controller and how to reference it