Book : Expression Blend 4 with Silverlight

Foundation Expression
Blend 4 with Silverlight

By Victor Gaudioso

http://friendsofed.com/book.html?isbn=143022973X

http://www.amazon.com/Foundation-Expression-Blend-4-Silverlight/dp/143022973X

Book : ASP.NET MVC Framework Unleashed

ASP.NET MVC Framework Unleashed By Stephen Walther

http://www.informit.com/store/product.aspx?isbn=0672329980

http://stephenwalther.com/blog/category/11.aspx

Book : WPF Good book

WPF 4 Unleashed

http://www.informit.com/store/product.aspx?isbn=0672336553

What happens when user click .NET assembly (EXE)?

When you double click on a .net .exe assembly

Windows' PE (Portable Executable) loader kicks in

If you're on a Windows >= Windows XP it will detect that the executable is a managed executable and will forward it to .net by calling _CoreExeMain in mscoree.dll (_CoreDllMain if you double clicked on a managed .dll). It can use the assembly configuration file to know which runtime to use.

If you're on Windows < Windows XP, the .exe file contains a small native piece of code that will jump to mscoree.dll's _CoreExeMain or _CoreDllMain.

Then mscoree.dll initializes the .net runtime, depending on the global configuration, the assembly configuration file, and what not.

Then if it's a .exe, it will JIT compile its entry point method, and start executing it.

Reference :
http://stackoverflow.com/questions/2788270/what-happens-when-user-click-net-assembly-exe

http://maneshjoseph.blogspot.com/2010/10/what-happens-when-you-click-on-net-exe.html

Get the Image from a Image URL using C#.Net

Following is code to Get the Image from a Image URL using C#.Net

private Image ImageFromURL(string Url)
        {
            byte[] imageData = DownloadData(Url);
            ImageDetail imgDetail = new ImageDetail();
            Image img = null;

            try
            {
                MemoryStream stream = new MemoryStream(imageData);
                img = Image.FromStream(stream);
                
               
                stream.Close();
            }
            catch (Exception)
            {
            }

            return img;
        }

private byte[] DownloadData(string Url)
        {
            string empty = string.Empty;
            return DownloadData(Url, out empty);
        }

        private byte[] DownloadData(string Url, out string responseUrl)
        {
            byte[] downloadedData = new byte[0];
            try
            {
                //Get a data stream from the url
                WebRequest req = WebRequest.Create(Url);
                WebResponse response = req.GetResponse();
                Stream stream = response.GetResponseStream();

                responseUrl = response.ResponseUri.ToString();

                //Download in chuncks
                byte[] buffer = new byte[1024];

                //Get Total Size
                int dataLength = (int)response.ContentLength;

                //Download to memory
                //Note: adjust the streams here to download directly to the hard drive
                MemoryStream memStream = new MemoryStream();
                while (true)
                {
                    //Try to read the data
                    int bytesRead = stream.Read(buffer, 0, buffer.Length);

                    if (bytesRead == 0)
                    {
                        break;
                    }
                    else
                    {
                        //Write the downloaded data
                        memStream.Write(buffer, 0, bytesRead);
                    }
                }

                //Convert the downloaded stream to a byte array
                downloadedData = memStream.ToArray();

                //Clean up
                stream.Close();
                memStream.Close();
            }
            catch (Exception)
            {
                responseUrl = string.Empty;
                return new byte[0];
            }

            return downloadedData;
        }

Save Image to Disk using C#.Net

After lot of search I found the code that saves Image class to harddisk.

public void SaveImage(Image imgToSave, string FileName)
        {
            //Create empty bitmap image of original size

            Bitmap tempBmp = new Bitmap(imgToSave.Width, imgToSave.Height);

            Graphics g = Graphics.FromImage(tempBmp);
            //draw the original image on tempBmp

            g.DrawImage(imgToSave, 0, 0, imgToSave.Width, imgToSave.Height);


            //dispose originalImage and Graphics so the file is now free

            g.Dispose();

            imgToSave.Dispose();

            //Save the image file to original location

            tempBmp.Save(FileName, System.Drawing.Imaging.ImageFormat.Jpeg);

            
        }

Code For Fetch Images from a URL using C#.net

public List FetchImages(string Url)
        {
            List imageList = new List();

            //Append http:// if necessary
            if (!Url.StartsWith("http://") && !Url.StartsWith("https://"))
                Url = "http://" + Url;

            string responseUrl = string.Empty;
            string htmlData = ASCIIEncoding.ASCII.GetString(DownloadData(Url, out responseUrl));

            if (responseUrl != string.Empty)
                Url = responseUrl;

            if (htmlData != string.Empty)
            {
                string imageHtmlCode = "'); //make sure data will be inside img tag
                    int start = htmlData.IndexOf(imageSrcCode) + imageSrcCode.Length;
                    int end = htmlData.IndexOf('"', start + 1);

                    //Extract the line
                    if (end > start && start < brackedEnd)
                    {
                        string loc = htmlData.Substring(start, end - start);

                        //Store line
                        imageList.Add(loc);
                    }

                    //Move index to next image location
                    if (imageHtmlCode.Length < htmlData.Length)
                        index = htmlData.IndexOf(imageHtmlCode, imageHtmlCode.Length);
                    else
                        index = -1;
                }

                //Format the image URLs
                for (int i = 0; i < imageList.Count; i++)
                {
                    string img = imageList[i];

                    string baseUrl = GetBaseURL(Url);

                    if ((!img.StartsWith("http://") && !img.StartsWith("https://"))
                        && baseUrl != string.Empty)
                        img = baseUrl + "/" + img.TrimStart('/');

                    imageList[i] = img;
                }
            }

            return imageList;
        }

   
        private byte[] DownloadData(string Url)
        {
            string empty = string.Empty;
            return DownloadData(Url, out empty);
        }

        private byte[] DownloadData(string Url, out string responseUrl)
        {
            byte[] downloadedData = new byte[0];
            try
            {
                //Get a data stream from the url
                WebRequest req = WebRequest.Create(Url);
                WebResponse response = req.GetResponse();
                Stream stream = response.GetResponseStream();

                responseUrl = response.ResponseUri.ToString();

                //Download in chuncks
                byte[] buffer = new byte[1024];

                //Get Total Size
                int dataLength = (int)response.ContentLength;

                //Download to memory
                //Note: adjust the streams here to download directly to the hard drive
                MemoryStream memStream = new MemoryStream();
                while (true)
                {
                    //Try to read the data
                    int bytesRead = stream.Read(buffer, 0, buffer.Length);

                    if (bytesRead == 0)
                    {
                        break;
                    }
                    else
                    {
                        //Write the downloaded data
                        memStream.Write(buffer, 0, bytesRead);
                    }
                }

                //Convert the downloaded stream to a byte array
                downloadedData = memStream.ToArray();

                //Clean up
                stream.Close();
                memStream.Close();
            }
            catch (Exception)
            {
                responseUrl = string.Empty;
                return new byte[0];
            }

            return downloadedData;
        }

Code for Image to Byte Array and Byte Array to Image Converter using C#

Convert Image to byte[] array

public byte[] imageToByteArray(System.Drawing.Image imageIn)
{
MemoryStream ms = new MemoryStream();
imageIn.Save(ms,System.Drawing.Imaging.ImageFormat.Gif);
return  ms.ToArray();
}

Convert byte[] array to Image

public Image byteArrayToImage(byte[] byteArrayIn)
{
MemoryStream ms = new MemoryStream(byteArrayIn);
Image returnImage = Image.FromStream(ms);
return returnImage;
}

Get File Name from URL (C#/.NET)

string FileName = URL.Substring(URL.LastIndexOf("/") + 1,
(URL.Length - URL.LastIndexOf("/") - 1));

Or:

string fileName = Path.GetFileName(url);

Ref:

http://www.thejackol.com/2007/04/10/get-file-name-from-url-cnet/