I need to write a routine which uploads a largish (2-4 meg) jpg photo and shrink it down to a small size. Adobe image ready does what I need but I need to develop it in my web application. Basically I need to reduce the image file size so it is web friendly.
View 9 Replieshow to read image in cell of the excel sheet. This sheet contain .jpeg formated images. I want as they are means in jpeg format. i am using asp.net and c# for this.
View 1 RepliesI need to be able to export PDF's that I am creating to JPEG, so that users can have a screenshot/thumbnail of the end product, which is faster than opening the whole PDF.
I am running this on an ASP.NET website running in Medium Trust in the Rackspace Mosso Cloud.
I have yet to find a library that will either work in Medium trust, or in the case of ABC PDF, which works great locally, wont load in Mosso. Maybe Mosso has a custom trust level?
I know that iTextSharp works on Mosso, but I haven't been able to figure how to "screenshot" a single page of a PDF, or export a page to JPEG.
<form id="form1" runat="server"> <div id="dvforimage"> <asp:TextBox ID="Txtimage" runat="server"></asp:TextBox> <b>This is text</b> <img id="imgforconvert" src="images.jpg" alt="img1" /> </div> <asp:Button ID="btnforimage" runat="server" Height="28px" Width="72px" Text="ok" onclick="btnforimage_Click" /> </form>
I want to convert all data present in div to jpeg.I mean image,text or whatever i write inside div tag.You have given me previous cod e which only convert text to image.
how can i set Title for a page with Response.ContentType = "image/jpeg" ?
View 2 Repliesi'm developing a site using VS2010 and with my windows vista busniness OS. i used the default VS2010 wizard for new web application to create it. included a folder in the root directory and created new aspx pages to derive from the master page in the root directory of my site. everything shows on the new pages except the jpeg image logo in the master page. But other aspx pages i created in the root directory shows every thing fine.
View 1 RepliesI want to overlap a "png" image over an "jpeg" image. But it is not overlaping can any body tell me how to do it Here's the code i'm using
[code]....
The urls on my site can become very long, and its my understanding that urls are transmisted with the http requests. So the idea came to compress the string in the url.From my searching on the internet, i found suggestions on using short urls and then link that one to the long url. Id prefere to not use this soltuion because1) I would have to do a extra database check to convert between long and short url.
That leaves in my head 2 options1) Hashing, i dont think this is a option. If you want a safe hashing algorithim, its going to be long.2) Compressing the url string, basicly having the server depress the string when when it gets the url parameters.3) Changing the url so its not descriptive, this is bad because it would make development harder for me ( This is a 1 man project ).Considering the vast amount posible amount of OS / browsers out there, i figured id as if anyone else has tried this or have some clever suggestions.If it mathers the url parameters can reach 100+ chars.Example: mysite.com/Reports/Ability.aspx?PlayerID=7737&GuildID=132&AbilityID=1140&EventID=1609&EncounterID=-1&ServerID=17&IsPlayer=True
EDIT:Let me clarify atm this is NOT breaking the site. Its more about me learning to find a good solution ( Im well aware this is micro optimisation, my site is very fast atm ) and making my site even faster ( To challage myself, and become a better coder ).There is also a cosmetic issue, i personaly think that a URL longer then the address bar looks bad.
i m using photo gallery in a website but pics takes much time to be view than any other sites like facebook or orkut. hw can i overcome this problem. i m resizing the image on file upload btn. you can check the url www.sanskarbhartipublicschool.com/photogallery
View 1 RepliesHow I Can Underestand That My WebSite Uses Gzip Compressing?[URL]
View 1 RepliesI agree that the best way to shorten the ViewState is to disable it on the ASP.Net controls that don't need it. Keeping it small from the beginning is a great habit.I have also heard that it is already compressed (although can be true... there are ways of compressing it even more, has described in this Stack Overflow question).
My question here is not if it should be compressed... is: when should ViewState be compressed?If we have a ViewState of 410 characters it will weight 410 bytes in a page, while a ViewState of 13.843 characters equals 13.5 KB.13.5KB is a considerable weight already. And if I compress a CSS file that height 10KB, I think it is also worthy compressing a ViewState of 13.5KB, even if that means a little extra "thinking" on the server.But is 410 bytes of ViewState worth the extra processing on the server?
In the past, with pages with large viewstate I have overridden the PageStatePersister class so when the state is saved I compress it. On Load I decompress it. I have haven't really thought about it, but could IIS handle something like this better? The reason I did this was to keep my pages slimmer because I have a lot of custom controls on the page and the viewstate was huge. This is where I got my original code from:[URL]
View 1 RepliesHow can we add any wait image or progress bar when we upload a big size file to upload and it take several minutes to upload a file.
I want to show any Image or progress bar.
i want to display image in my datagrid.....so i added a field named img and set its datatype to nvarcharmy database content is like this:i did this code:
Code:
Dim obj As New DataAccess
Dim dt As New DataTable
dt = obj.getDataTable("Select * from Table1")
Dim dr As DataRow
For Each dr In dt.Rows
dr("img") = MapPath("~img") & dr("img")
[code]...
i did this code to embed an image in an email:
Code:
If FileUpload1.HasFile Then
Dim emailMessage As System.Net.Mail.MailMessage = New System.Net.Mail.MailMessage
emailMessage.From = New System.Net.Mail.MailAddress(System.Configuration.ConfigurationSettings.AppSettings("txt"))
emailMessage.To.Add(txtTo.Text.Trim())
emailMessage.Subject = txtSubject.Text.Trim()
Dim plainTextView As System.Net.Mail.AlternateView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(txtBody.Text.Trim(), Nothing, "text/plain")
Dim htmlView As System.Net.Mail.AlternateView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(txtBody.Text.Trim() + "<img src=cid:HDIImage>", Nothing, "text/html")
Dim imageResource As New System.Net.Mail.LinkedResource(FileUpload1.PostedFile.FileName)
imageResource.ContentId = "HDIImage"
htmlView.LinkedResources.Add(imageResource)
emailMessage.AlternateViews.Add(plainTextView)
emailMessage.AlternateViews.Add(htmlView)
Dim smtpClient As System.Net.Mail.SmtpClient = New System.Net.Mail.SmtpClient
Try
smtpClient.Send(emailMessage)
Catch smtpexc As System.Net.Mail.SmtpException
Catch ex As Exception
End Try
End If
i am getting the runtime error:
Could not find the file how to solve this?
I'm using lightbox [URL] .... to display a 6 images in a ASP.NET repeater looks great and almost does every thing i need.
I have set the .vb to make imagename.visible=false if the imageUrl=""... again works like a charm and I only see images that have a value in the database.
The problem i have is in order to list how many images in each set Lightbox uses an attribute in the HTML Hyperlink tag called 'data-lightbox'.
Code:
' href="<%# "../uploads/" & DataBinder.Eval(Container.DataItem, "image5") %>">
' width="45px" runat="server"/>
The problem is that when 3/6 images are uploaded and populated in the database lightbox still says there are 6 in the set even though only 3 are visible.
What i would like to do is in the .vb code when i check to see if the database field for the image is blank is set the data-lightbox value accordingly so visible images get a data-lightbox value only and are therefore added to the set.
Tried a .net Hyperlink too but same issue...
Code:
' href='<%# "../uploads/" & DataBinder.Eval(Container.DataItem, "image") %>'>
' Visible='<%# IIf(Eval("Image") Is DbNull.Value, "False","True") %>' width="280px" runat="server"/>
How can i change a custom attribute in a HTML form from the VB.net code behind?
I need to show an image and then 4 pointer small images. The user then has the facility to grab each of the pointer images and drop them on the large image.
Is this possible and if so how do I go about getting started or is there and third party controls out there that will do the job.
I want to create an Image to show the used space of each user. I explain it in details. Each user can login and can upload its document on the web. I want to calculate that space and want to show the space used i form of Image like attached. I have calculated the space for logged in user but unable to create Image on basis of this calculated space.
View 5 RepliesI have a website wrote in asp.net which is dynamic which gets its data from an access database. I want to put some sort of image control on my site and load it with images in code behind. I then want the control to scroll horizontally. I don't have a clue where to start.
View 6 RepliesI have a div container with an image to the left and a smaller image to the right. My problem is the small image to the right is at the top and I want it to be at the bottom.
OOOOOO OOOO
OOOOOO OOOO
OOOOOO
OOOOOO
OOOOOO
I want :-
OOOOOO
OOOOOO
OOOOOO
OOOOOO OOOO
OOOOOO OOOO
I float my small image right.
Me with C# asp.net 2.0 In my application I have 2 web pages and 1 folder, the folder may contain a jpeg or bmp or pdf file. when I click a button in the the first web page how can I open the 2nd web page and show the file in the folder.
View 2 RepliesSo on my site, a user has the ability to create an avatar. It's created by the user selecting from several images; there is a base "skin" image, and png's that overlap that image that depict hair, eyes, mouth, etc.
I cannot save the user's avatar to the project's files, so the user's avatar data is stored in the database, and the png's are overlapped on the fly and displayed to the user.
However, I'd like to have the ability for the user to download their avatar as a jpeg by going to a page.
I have this little example set up that is working correctly:
protected void Page_Load(object sender, EventArgs e)
{
//User has skin1.png, eyes3.png, and mouth8.png
Bitmap bit = new Bitmap(System.Drawing.Image.FromFile(Server.MapPath("/images/skin1.png")), 80, 106);
Response.ContentType = "image/jpeg";
bit.Save(Response.OutputStream, ImageFormat.Jpeg);
}
But, as you can see, I only have this working for a single image. I'd like to create a bitmap from the multiple png's and output a jpeg.
i want to upload files that are only jpeg, jpg etc. But i couldn't filter the files in the opening window. I want to change the text "all files" to jpeg etc. in the asp.net. (C#)
View 3 Repliesi have images, i need a code that convert the images in to editable word.for example .gif image .can nay one give me sample code.
View 11 RepliesHave following sub that displays message. It works fine except for that when message is displayed then it hides any image controls. After click on OK then image controls are being shown again.
Public Sub UserMsgBox1(ByVal Message1 As String, ByVal Message2 As String, ByVal Message3 As String)
Dim sb As New StringBuilder()
Dim oFormObject As New System.Web.UI.Control
Message = Message1.Replace("'", "'") & Message2.Replace("'", "'") & Message3.Replace("'", "'")
Message = Message1.Replace(Chr(34), "" & Chr(34)) & Message2.Replace(Chr(34), "" & Chr(34)) & Message3.Replace(Chr(34), "" & Chr(34))
Message = Message1.Replace(vbCrLf, "
") & Message2.Replace(vbCrLf, "
") & Message3.Replace(vbCrLf, "
")
Message = "<script type=text/javascript>alert(""" & Message1 & "
" & "
" & Message2 & "
" & "
" & Message3 & """)</script>"
sb = New StringBuilder()
sb.Append(Message)
For Each oFormObject In Me.Controls
oFormObject.Controls.AddAt(oFormObject.Controls.Count, New LiteralControl(sb.ToString()))
Next
End Sub
Mater page:
<%@ Master Language="VB" CodeFile="MasterPage.master.vb" Inherits="MasterPage" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" [URL]>
<html xmlns=[URL]>
<head id="Head1" runat="server">
<title>Job Reporting - Certified Jobs Inquiry</title>..............................