Hi friends, after a long time...again today I'm back to you guys with a simple code snippet, which I have written for a website. But I just thought to share this with you guys... I know its simple but a very useful code snippet when you want to retrieve an image from any HTML content.

So lets begin,

using System.Text;

///This is the main part of this snippet.
///At first I have setup a string called bodyX which will get the input text(HTML source) and it will change its case to simple for easier use and to avoid case problems.
///int getPositionY is used to find the starting position of the first 'src=' from the HTML content. We very well know that mainly in HTML codes, src is use to mention the path of Image.
///int getPosition is used to find the starting position of the extension of image.
///now we can easily get the starting position and ending position of the first image tag in html. And by removing characters and applying a simple formula we can extract the image from the content.
///Anyways dont worry about the code snippet. juz copy paste it and have a look on the code written under the Button click event. And also it would be useful if you review the codes I;v written in getHTMLImage function.

        protected virtual String getHTMLImage(string Body) {


            String bodyX = Body.ToLower();
           
            int getPosition = -1;
            int getPositionY = -1;
            String Extension = "";


            getPositionY = bodyX.IndexOf("src=");

            //-----------------------------------------------------

            //1st phaze
            String ImagePath = bodyX.Remove(0, getPositionY + 5);

            //2nd phaze
            if (getPosition == -1)
            {
                getPosition = ImagePath.IndexOf(".jpg" + '"');
                Extension = ".jpg";
            }

            if (getPosition == -1)
            {

                getPosition = ImagePath.IndexOf(".png" + '"');
                Extension = ".png";
            }

            if (getPosition == -1)
            {

                getPosition = ImagePath.IndexOf(".jpeg" + '"');
                Extension = ".jpeg";
            }
           
            if (getPosition == -1)
            {

                getPosition = ImagePath.IndexOf(".gif" + '"');
                Extension = ".gif";
            }
          
            if (getPosition == -1)
            {

                getPosition = ImagePath.IndexOf(".bmp" + '"');
                Extension = ".bmp";
            }

            try
            {
                ImagePath = ImagePath.Remove(getPosition, ImagePath.Length - getPosition);
          
            }
            catch {
                ImagePath = "no Image in the HTML Code";
                Extension = "";
            }

            return ImagePath + Extension;
        }


        private void button1_Click(object sender, EventArgs e)
        {

            label2.Text = getHTMLImage(lblhtml.text);

        }


If youre' having any problem in coding, you can download the sample project I have written in C# (.net 2008-SP1)
I hope you'll like this code snippet and I know It can be written much more flexible without writing all those extensions. But to save time and energy I did it in such a way that I can achieve my goal easily...hehe