CODEWITHSUNDEEP
c#asp.net-mvcrazor
Ali Adlavaran
Ali Adlavaran

Reputation: 3735

How to customize WebViewPage executation output?

I am going to inject some elements in every view of our Asp.Net MVC application. so to do that (I found this: Custom WebViewPage inject code when razor template is rendering answer) I have subclassed the WebViewPage and I have overridden the ExecutePageHierarchy like below:

   public override void ExecutePageHierarchy()
    {
        base.ExecutePageHierarchy();
        string output = Output.ToString();
        if (MyHelper.InitializationRequired)
            output = MyHelper.GetPageHeader() + output + MyHelper.GetPageFooter();
        //--------------
        Response.Clear();
        Response.Write(output);
        Response.End();
    }

by this code we can wrap all of the output markup with some header and some footer elements such as scripts or additional tags which i want to do that.

BUT in this way we lost the Layout completely! because of clearing the response.

my main question is that, how to inject some HTML markups exactly before or exactly after WebViewPage's output by preserving the content of response which maybe there are some other views or the layout?

Upvotes: 0

Views: 496

Answers (2)

Ali Adlavaran
Ali Adlavaran

Reputation: 3735

Finally i found a trick to do it by this way:

 public override void ExecutePageHierarchy()
    {
        var tmp = OutputStack.Pop();
        var myWriter = new StringWriter();
        OutputStack.Push(myWriter);
        base.ExecutePageHierarchy();

        tmp.Write(
            string.Format("<div> Header of [{0}]</div> {1} <div> Footer of [{0}]</div>",
            VirtualPath,
            myWriter.ToString()));
    }

it works well generally and it wraps the output of view by header and footer. but in my scenario i should able to access to some flags which will assigned on executing view. so i must check them after view execution:

 public override void ExecutePageHierarchy()
    {
        var tmp = OutputStack.Pop();
        var myWriter = new StringWriter();
        OutputStack.Push(myWriter);
        base.ExecutePageHierarchy();
        if (MyHelper.InitializationRequired)
           tmp.Write(
            string.Format("<div> Header of [{0}]</div> {1} <div> Footer of [{0}]</div>",
            VirtualPath,
            myWriter.ToString()));
        else
           tmp.Write(myWriter.ToString());
    }

this approach works well for me. so i posted it, maybe help some one;)

Upvotes: 2

Laurent Lequenne
Laurent Lequenne

Reputation: 902

You should use the layout system of MVC ... It's full featured to have a master layout schema :=)

Upvotes: 1

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