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Web Q&A: Accessible Images, Image Format Converter, and More

Posted By:      Posted Date: August 21, 2010    Points: 0   Category :ASP.Net

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Program for Format Conversion of An Image

.NET provides extensive support for image conversion. Any image can be processed from one format to another. Most common formats to which .NET have support for are .BMP, .EMF, .GIF, .ICO, .JPG, .PNG, .TIF and .WMF.

Get pixel format, raw format, property id list and property items image in VB.net - C#.net.

n this simple article you will learn that how we can get pixel format, raw format, property id list and property items image in VB and C#.net.

Get Pixel Format:

Image consists of pixels to get the format of the pixel we have a property named pixel format. This property returns an enumeration of pixel format. This enumeration tells the pixel format.

To demonstrate make a window application. Drag one button and a picture box on form.

Now write the following code on Button click event:

image.save not saving images


I have a piece of code that writes string into an image and save it. It works on one of my site and but not the other. The image.save is not working. If this is a permission problem, which account should I change? I use win server 2003 and IIS 6, and have given ASPNET, NETWORK SERVICE, and anonymous user write access.

Need to upload images with data, but image url's are in separate db table

Hello, I'm making a simple homes classifieds section and when a home ad is created, a HomeID is automatically created for it in the db.  I need the images to upload and enter the associated HomeID with each image automatically.  What I tried isn't working, because it looks like it's looking for the HomeID in the codebehind before it gets entered into the db.ASPX CODE<asp:SqlDataSource ID="SqlDataSource1" runat="server"         ConnectionString="<%$ ConnectionStrings:ConnectionString %>"         InsertCommand="INSERT INTO [Homes] ([UserName], [Street], [Details], [Contact], [Phone], , [Thumb], [Price], [Approved], [Posted]) VALUES (@UserName, @Street, @Details, @Contact, @Phone, @Email, @Thumb, @Price, @Approved, @Posted)"         SelectCommand="SELECT [HomeID], [UserName], [Street], [Details], [Contact], [Phone], , [Thumb], [Price], [Approved], [Posted] FROM [Homes]" >        <InsertParameters>            <asp:Parameter Name="UserName" Type="String" />            <asp:Parameter Name="Street" Type="Str

Datareader: Set multiple random images into appropriate image field

Hi, first of all, sorry if my title isn confusing as i dont really sure the specify description regarding what i wan to do.   Now what i trying to do is, I getting 5 random images from the database, this is the code for me to get random 5 records from database: Dim command As New SqlCommand("SELECT TOP 5 Description,Image,ImageID FROM Properties ORDER BY ImageID", con)  and with the help of image handler to display it to 5 Images components i put in the page, lets say name it "Image1" to "Image5". Now the question is, how do i assign the 5 diff imageID into the 5 image components? Lets say i wan my Image1's imageID is 1, and Image2's imageID is 2. What im doing now is assigning all the same imageID to all 5 images. Below is how i assign the imageIDDim reader As SqlDataReader reader = command.ExecuteReader If reader.HasRows = True Then While reader.Read Image1.ImageUrl = "GetThumbnail.aspx?ImageID=" & reader("ImageID") & " " Image2.ImageUrl = "GetThumbnail.aspx?ImageID=" & reader("ImageID") & " " Image3.ImageUrl = "GetThumbnail.aspx?ImageID=" & reader("ImageID") & " " Image4.ImageUrl = "GetThumbnail.aspx

Displaying Image stored in rtf format in access database displaying it on crystal report

Hello, I'm working on a C# project combined with "Crystal Reports 10". When a user inserts something in a "TextField" in my C#-Program, it's saved  as RTF-code (Bolt,Pictures,Underlined,....) to a database.. So if they  reopen it in my "C#"-program they're able to see what they've entered  including their pictures .... But when I created a "Crystal Report"-file and combined it with the same  database used in my "C#"-program, it only show the formatted text and not  the pictures or images... Is there a way to show the "Picture" or "Image" they've inserted in RTF-code  ??? When I copy the code from the database in a simple Text-File and rename  it too "Test.rtf", it wil open correctly in word (with picture and  everything else)... So I hope there is a way to get the picture, Cz it's rather important  they've got a picture of the product they wanna print ...

How to convert raster Image to Vector image format

I want to covert raster image to vector image format in  C#is it possible ??Thanks

Posting multiple images to one Image tool

I want to create a if statement which i select an area on a imagemap then the corresponding label discription will appear and corresponding image. The code if what i have so far    Protected Sub ImageMap1_Click(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.ImageMapEventArgs) Handles ImageMap1.Click        If e.PostBackValue = "ME" Then            Image1.ImageUrl = "F:\WebSite1\images\one.jpg" & label1.text="Me" <------- How do you join a label and image selection in one if statement i keep getting errors on this and image doesnt load also        ElseIf e.PostBackValue = "Car" Then            Label1.Text = "CAR" & Image1.ImageUrl = "F:\WebSite1\images\two.jpg"        ElseIf e.PostBackValue = "Mysister" Then            Label1.Text = "My sister" &Image1.ImageUrl = "F:\WebSite1\images\two.jpg"        Else            Label1.Text = ""        End If 

WPF Listbox with images - default image by default before icon download


I have a wpf ListBox, and each item has an image that the list needs to download from a server - the list definition looks like so:

<ListBox x:Name="List" BorderThickness="0" AlternationCount="2" ItemContainerStyle="{StaticResource alternatingWithBinding}" 
   HorizontalContentAlignment="Stretch" ScrollViewer.HorizontalScrollBarVisibility

'No information was found about this pixel format error' on image binding

I've read all the posts I could find on this error but I'm still stumped.

I have a user control with a dependency property named Image.

In the user control I have a stack panel that contains an image and I set the binding in the xaml

<Image HorizontalAlignment="Center" Margin="3,0,0,0" Width="85" Height="75" Source="{Binding ElementName=UserControl, Path=Image}"/>

In a code behind I try to set the image for an instance of this control named WeatherNB

                BitmapImage bi1 = new BitmapImage();
                bi1.UriSource = new Uri(currentImage, UriKind.Relative);
                this.WeatherNB.Image = bi1;

but I get the following error

Unhandled Exception: System.NotSupportedException: No information was found about this pixel format.
   at System.Windows.Media.PixelFormat.CreatePixel

Value Converter Without Binding On Image Source


I need to get the path of an image through a value converter. However I can't find any examples of using a value converter without binding.

I would be looking to do something along these lines:

<Image source="{Value=Image1, Converter={ImageConverter}}" />

The image converter will then go check an image folder and return the correct file path.

where to start? create an image on the fly from other images


Hi all

I hope this is in the right forum thread...

How do I create (or layer) a new image from  2 existing images with ASP.net on the fly?

Does anyone have any examples or links to websites?

or has anyone done this personally? any hints and tips?

also can i put this code (to create it) in a user control? instead of an external page?


jpg, gif, png, bmp image format


Hello i want to appreciate u guys for answering my technical questions. I am working on a photo project and i want users to be able to upload jpg, gif, bmp,png format. Right now, the project allows only jpg image format. Can someone help me with that? My code is below: Imports System.Data Imports System.IO Imports System.Data.SqlClient

Partial Class PhotoAdmin_Default Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load 
    UserIdValue.Text = Membership.GetUser().ProviderUserKey.ToString() 
    cannotUploadImageMessage.Visible = False 
End Sub 

Loading rtf with image gives "Unrecognized structure in data format 'Rich Text Format'.\r\nParamet


I'm trying to load this rtf into a RichTextBox:

{\rtf1\ansi\ansicpg1252\uc1\htmautsp\deff2{\fonttbl{\f0\fcharset0 Times New Roman;}{\f2\fcharset0 Segoe UI;}}{\colortbl\red0\green0\blue0;\red255\green255\blue255;}\loch\hich\dbch\pard\plain\ltrpar\itap0{\lang1033\fs18\f2\cf0 \cf0\ql{\f2 {\ltrch >> -----------------------------------------------------}{\ltrch \line }{\ltrch >> 19-10-2010 11:22}{\ltrch \line }{\ltrch >> -----------------------------------------------------}{\ltrch \line }\li0\ri0\sa0\sb0\fi0\ql\par}
{\f2 {\ltrch {\*\shppict{\pict\picwgoal1020\pichgoal1035\pngblip

Add images in Image Rotator With the Help FileUpload Control

The article Add images in Image Rotator With the Help FileUpload Control was added by codenickel on Saturday, October 30, 2010.

In case of ImageRotator we can use FileUpload Control To upload my images.Here I use it in a siple way:-Step 1:- we use Image Control (Image1),FileUpload Contol , Button(Button1..)and HiddenField ( for store the FileName), and a Save button to call the

Link images from Image library to Announcement



I have an user requirement to show the Announcement list as a News site (like Channel News) such that whenever user views the announcement the related image should be displayed in the right panel.

Please suggest how to achieve this.


merging two images into one without losing the image quality


Hi Everybody,


I want a functionality of merging two images after reading them without losing the image quality.

Is there new Image classes or libraries introduced in WPF for such kind of requirement.



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