//Handles update recipe
public void Update_Recipe(object sender, EventArgs e)
{
RecipeInfo Update = new RecipeInfo();
Update.ID = (int)Util.Val(Request.QueryString["id"]);
Update.RecipeName = Request.Form["Name"];
Update.Author = Request.Form["Author"];
Update.CatID = int.Parse(Request.Form["CategoryID"]);
Update.Ingredients = Request.Form["Ingredients"];
Update.Instructions = Request.Form["Instructions"];
Update.Hits = int.Parse(Request.Form["Hits"]);
#region Upload New Photo/Update Photo
if (RecipeImageFileUpload.HasFile) //Check if there is a file
{
//Constant variables
string Directory = GetRecipeImage.ImagePath; //Directory to store recipe images
int maxFileSize = 30000; // Maximum file size limit
int FileSize = RecipeImageFileUpload.PostedFile.ContentLength; //Get th file lenght
string contentType = RecipeImageFileUpload.PostedFile.ContentType; // Get the file type
string FileExist = Directory + RecipeImageFileUpload.PostedFile.FileName; // Get the filename from the directory and compare
string FileName = Path.GetFileNameWithoutExtension(RecipeImageFileUpload.PostedFile.FileName); //Get the posted filename
string FileExtention = Path.GetExtension(RecipeImageFileUpload.PostedFile.FileName); //Get the posted file extension
string FilePath;
string FileNameWithExtension;
//File type validation
if (!contentType.Equals("image/gif") &&
!contentType.Equals("image/jpeg") &&
!contentType.Equals("image/jpg") &&
!contentType.Equals("image/png"))
{
lbvalenght.Text = "File format is invalid. Only gif, jpg, jpeg or png files are allowed.";
lbvalenght.Visible = true;
return;
}
// File size validation
else if (FileSize > maxFileSize)
{
lbvalenght.Text = "File size exceed the maximun allowed 30000 bytes";
lbvalenght.Visible = true;
return;
}
else
{
//Check wether the image name already exist.
//We don't want images stored in the directory if they are not being use.
if (File.Exists(Server.MapPath(FileExist)))
{
//Create a random alpha numeric to make sure the updated image name is unique.
Random rand = new Random((int)DateTime.Now.Ticks);
int randnum = rand.Next(1, 10);
int CharCode = rand.Next(Convert.ToInt32('a'), Convert.ToInt32('z'));
char RandomChar = Convert.ToChar(CharCode);
//Get directory, the file name and the extension.
FilePath = string.Concat(Directory, FileName + randnum + RandomChar, "", FileExtention);
//Joined the filename and extension to insert into the database.
FileNameWithExtension = FileName + randnum + RandomChar + FileExtention;
//Initialize Add recipe object property to get the full image name
Update.RecipeImage = FileNameWithExtension;
try
{
//Delete old image
File.Delete(Server.MapPath(Directory + FileName + FileExtention));
//Save the recipe image to the specified directory
//Make sure the "RecipeImage" folder has write permission to upload image
RecipeImageFileUpload.SaveAs(Server.MapPath(FilePath));
}
catch (Exception ex)
{
JSLiteral.Text = "Error: " + ex.Message;
return;
}
}
else
{
//Get directory, the file name and the extension.
FilePath = string.Concat(Directory, FileName, "", FileExtention);
//Joined the filename and extension to insert into the database.
FileNameWithExtension = FileName + FileExtention;
//Initialize Add recipe object property to get the full image name
Update.RecipeImage = FileNameWithExtension;
try
{
//Save the recipe image to the specified directory
//Make sure the "RecipeImage" folder has write permission to upload image
RecipeImageFileUpload.SaveAs(Server.MapPath(FilePath));
}
catch (Exception ex)
{
JSLiteral.Text = "Error: " + ex.Message;
return;
}
}
}
}
else
{ //This section is executed if the input file is empty.
//Then it check if an image filename exist in the database.
//If it exist, just update it with the same value, else update it with an empty string.
IDataReader dr = myBL.GetRecipeImageFileNameForUpdate(Update.ID);
dr.Read();
if (dr["RecipeImage"] != DBNull.Value)
{
Update.RecipeImage = (string)dr["RecipeImage"];
}
else
{
Update.RecipeImage = string.Empty;
}
dr.Close();
}
#endregion
//Notify user if error occured.
if (Update.Update() != 0)
{
JSLiteral.Text = Util.JSProcessingErrorAlert;
return;
}
string strURLRedirect;
strURLRedirect = "confirmdel.aspx?catname=" + Update.RecipeName + "&mode=update";
//Release allocated memory
Update = null;
Util = null;
Response.Redirect(strURLRedirect);
}
