CODEWITHSUNDEEP
c#htmlimagewebkithtmltextwriter
F.Sedaghat
F.Sedaghat

Reputation: 21

HTML img tag does not render source image in WebKit.NET browser in C#

I'm trying to set my WebKitBrowser DocumentText to an HTML string containing a local SVG file path as image source. Actually I want to show the SVG file in a web browser. Here is my code:

        string SVGPath = "file:///D:/MySVGFiles 1/SVGSample01.svg";

        StringWriter stringWriter = new StringWriter();

        using (HtmlTextWriter writer = new HtmlTextWriter(stringWriter))
        {
            writer.AddAttribute(HtmlTextWriterAttribute.Src, SVGPath);
            writer.AddAttribute(HtmlTextWriterAttribute.Width, "50%");
            writer.AddAttribute(HtmlTextWriterAttribute.Height, "50%");

            writer.RenderBeginTag(HtmlTextWriterTag.Img); 
            writer.RenderEndTag(); 

        }

        string content = stringWriter.ToString();

        this.webKitBrowser1.DocumentText = content;

When I run the code, the browser only shows the image canvas, and does not render the SVG file. I have tried this with a JPG image too, and got the same result.

Could anyone please tell what is wrong with this code??

Upvotes: 1

Views: 1169

Answers (1)

F.Sedaghat
F.Sedaghat

Reputation: 21

I finally found out what is wrong. DocumentText property of WebKitBrowser is a string, and in its set method, HTML text is passed to loadHTMLString method.

webView.mainFrame().loadHTMLString(value, null);

DocumentText property is used when no URL is specified. But here I wanted to load an image from a specified address. So in case of using tags like setting DocumentText property would not be valid. I had to call loadHTMLString, and when an image is gonna be added to HTML string using its address, URL must be the directory of the image file. According to what I have found in https://groups.google.com/forum/#!topic/uni_webview/idiRRNIRnCU, I changed the code and problem is solved! Here is the code that works:

 string fileName = "SVGSample01.svg";
 string URL = "file:///D:/MySVGFiles 1/";

 StringWriter stringWriter = new StringWriter();

    using (HtmlTextWriter writer = new HtmlTextWriter(stringWriter))
    {
        writer.AddAttribute(HtmlTextWriterAttribute.Src, fileName);
        writer.AddAttribute(HtmlTextWriterAttribute.Width, "50%");
        writer.AddAttribute(HtmlTextWriterAttribute.Height, "50%");

        writer.RenderBeginTag(HtmlTextWriterTag.Img); 
        writer.RenderEndTag(); 

    }

    string content = stringWriter.ToString();

 (this.webKitBrowser1.GetWebView() as IWebView).mainFrame().loadHTMLString(content,URL);

Just make sure the URL string contains "file:///" and the last "/".

Upvotes: 1

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