Resizing image on the fly!

public partial class Thumbnail : System.Web.UI.Page
{
 const string Q_IMG = "img";
 const string Q_WIDTH = "w";
 const string Q_HEIGHT = "h";

 const int DEFAULT_WIDTH = 120;
 const int DEFAULT_HEIGHT = 118;

 int Thumbnail_Width
 {
     get
     {
         if (Request.QueryString[Q_WIDTH] != null)
         return Convert.ToInt32(Request.QueryString[Q_WIDTH]);
         else
         return DEFAULT_WIDTH;
     }
 }

 int Thumbnail_Height
 {
     get
     {
         if (Request.QueryString[Q_HEIGHT] != null)
         return Convert.ToInt32(Request.QueryString[Q_HEIGHT]);
         else
         return DEFAULT_HEIGHT;
     }
 }

 ///
 /// just a dummy delegate for the required GetThumbnailImageAbort delegate
 ///
 ///
 public bool ImgAbort_Callback()
 {
     return false;
 }


 protected void Page_Load(object sender, EventArgs e)
 {
     if (!IsPostBack)
     {
         if (Request.QueryString[Q_IMG] != null)
         {
             try
             {
                 using (System.Drawing.Image img = System.Drawing.Image.FromFile(Server.MapPath(Request.QueryString[Q_IMG])))
                 {
                     using (System.Drawing.Image thumb = img.GetThumbnailImage(
                     this.Thumbnail_Width,
                     this.Thumbnail_Height,
                     new System.Drawing.Image.GetThumbnailImageAbort(ImgAbort_Callback),
                     IntPtr.Zero))
                     {
                         Response.ContentType = "image/jpeg";
                         thumb.Save(Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
                     }
                 }
             }
             catch { }
         }
     }
 }
}

Resizing image on the fly!

Globalization and Localization in ASP.Net 2.0

I would really love to write about this topic that my drool flooded my laptop and broke it. I just implemented this on my new project and its working perfectly compared to the one our company is currently using. So without further ado, i would like to present...............the link, everything you need to know is already in there.

Globalization and Localization in ASP.Net 2.0

Simple Delegate and Event Implementation Sample

class definition:

public class DelegateAndEvent
{
 //it is a good practice to name your delegates with "EventHandler"
 public delegate void ErrorEventHandler(DelegateAndEvent sender, ErrorEventArgs args);

 //declare event
 public event ErrorEventHandler ErrorRaised;

 //a better way of returning values is to create a class which inherits the EventArgs class and add the
 //desired property(ies)
 public class ErrorEventArgs : EventArgs
 {
     private string _errmsg;
     public string ErrorMessage
     {
         get { return _errmsg; }
         set { _errmsg = value; }
     }

     public ErrorEventArgs() { }
     public ErrorEventArgs(string error)
     {
         _errmsg = error;
     }
 }

 /// Method to allow raising of error (can either be public or private)
 public void RaiseError(string error)
 {
     if (!string.IsNullOrEmpty(error))
     {
         //check is event is not null (event has a subscriber)
         if (ErrorRaised != null)
         {
             ErrorRaised(this, new ErrorEventArgs(error));
         }
     }

 }
}


code behind:


public partial class _Default : System.Web.UI.Page
{
 DelegateAndEvent dne = new DelegateAndEvent();

 protected override void OnInit(EventArgs e)
 {
     base.OnInit(e);
     dne.ErrorRaised += new DelegateAndEvent.ErrorEventHandler(dne_ErrorRaised);
 }

 protected void Page_Load(object sender, EventArgs e)
 {
 }

 protected void btnEvent_Click(object sender, EventArgs e)
 {
     dne.RaiseError("Error was forced to be raised!");

 }

 void dne_ErrorRaised(DelegateAndEvent sender, DelegateAndEvent.ErrorEventArgs args)
 {
     lblError.Text = args.ErrorMessage;
 }
}

Simple Delegate and Event Implementation Sample