I'm trying to rescale uploaded jpeg in asp.netSo I go:
Image original = Image.FromStream(myPostedFile.InputStream);
int w=original.Width, h=original.Height;
using(Graphics g = Graphics.FromImage(original))
{
[code]...
i had draw a graph, however i want to display it. can display it to literal?
below is my coding:
' Create an in-memory bitmap where you will draw the image.
' The Bitmap is 300 pixels wide and 200 pixels high.
myImage = New Bitmap(1200, 1200, pixelFormat.Format48bppRgb)
' Get the graphics context for the bitmap.
g = Graphics.FromImage(myImage)
g.DrawString(I_fault_all2(i), New Font("Verdana", 12, FontStyle.Bold), Brushes.Black, xInterval * i + 50 + (width / 3), 500)
g.DrawString(I_total(i), New Font("Verdana", 12, FontStyle.Bold), Brushes.Black, xInterval * i + 50 + (width / 3), 500 - height - 25)
' Draw the axes
g.DrawLine(Pens.Blue, 30, 10, 30, 500)
' y-axis
g.DrawLine(Pens.Brown, 20, 500, 490, 500)
' x-axis
here is the coding i don't want as display as below, because it will go to a new screen without header and template.
[Code]....
I return array of images ( System.Drawing.Image[] ) from database and i want to show them in datagrid or datalist .. how to do that ?
View 2 RepliesHow to add System.Drawing.Image object to Asp:Image Control but I dint have imageId in my table.Image field is in another table..i retrieve image from database in Image object.i want to display it in asp:Image control or grid view.how to do it?
View 1 RepliesI created image from byte array
System.Drawing.Image newImage;
using (MemoryStream ms = new MemoryStream(imageBytes, 0, imageBytes.Length))
{
ms.Write(imageBytes, 0, imageBytes.Length);
newImage = System.Drawing.Image.FromStream(ms, true);
}
and now I need to have this image as a source for asp:Image (System.Web.UI.WebControls.Image). Is this possible as I know that conversion is impossible?
using asp.net membership api when I call Roles.GetRolesForUser(); it returns nothing. When I make a call Roles.GetAllRoles() all the roles are returned. What is the problem? Also what is the correct way to authenticate users using the membership api?
View 2 RepliesI'm new to WCF and this is definitely a rookie question. Why does my browser show/return nothing when I type this URL: http://localhost/service.svc/root, using the code below. I was hoping I would see an xml respone like: <double>56.78</double>. service.svc
--------------------------------------------------------------------------------------
<%@ ServiceHost Language="C#" Service="EssentialWCF.StockService" %>
using System;
using System.ServiceModel;
using System.ServiceModel.Web;
[code]...
I am using a script manager for ASP.NET MVC to combine and compact CSS files and JavaScript files for pages on a website. For the most part this works as expected, however there are times (couple of times per week) when the HTTP handler responsible for returning the content returns an empty response and so pages load without any CSS - the HTML returns and the images load as well. When this happens, refreshing the page does not resolve the problem, while resetting IIS always resolves the problem. Also, without resetting IIS, after some time the problem stops.
Normally the script handler logs errors, however there are no errors logged during the issue. It seems as if the handler is never invoked. There are no failed request logs generated by IIS.
I monitored resource usage when this was happening and did not notice anything out of the ordinary. The web server is running IIS 7 and has low CPU usage. I increased some parameters in IIS settings regarding the number of allowable requests to process, the problem still exists though perhaps less frequent. The website receives about 1.5 million pageviews monthly.
Ok, I almost hate to ask this because I'm sure it's been covered many times on this forum, but I'm starting to get too frustrated trying to get it to work, so I'm gonna ask anyway.I have setup forms authentication on my site and have it working without any issues. What I'm trying to do now is to add "Remember Me" functionality so that the users don't have to log in each time they access the site. I'm able to get the authentication part down, but the issue I'm having is that when the user logs in, I set certain attributes in Session variables for that user (name, site role, etc.). These values are obtained from a database after the user has been authenticated, based on the username. What I'm having problems with is getting at this username from the FormsAuthentication cookie.
After I authenticate the first time, I setup my cookie this way:
[Code]....
I have tried getting at the Username utilizing the User prinicipal, but it just returns blank.
I am developing an application that stores images as Base64 strings in xml files. I also want to allow the user to crop the image before saving it to the file, preferably all in memory without having to save a temp file, and then delete it afterwards. In order to display the newly uploaded image, I need to create a HTTP handler that I can bind the asp:Image to. The only examples for doing this online require passing the .ashx an ID and then pulling the image from a DB or other data store. Is it possible to somehow pass the raw data to the .ashx in order to get back the image?
View 3 RepliesI want to write a unit tetsing code for this function
[Code]....
I'd like to cretae a stub for image As System.Drawing.Image, set expectation as image.Width=250, image.Height=200. Can anyone help me on how to create the image stub in Rhino Mocks?[Code]....
[Code]....
I'm using the following codeproject to build an asp.net website and so far everything is good. My only problem is after the barcode is generated, a huge whitespace exist to the right of the barcode. I've been playing with this and am unable to resolve it.
Details below:
Link to Code Project Article: [URL]
Copy of the Font is here: [URL]
//Working Path
string sWorkPath = "";
sWorkPath = this.Context.Server.MapPath("");
//Fonts................
How to save the drawing (contents) on a panel as an image using C# and asp.net.I found Panel1.DrawToBitmap but its not working in the asp.net ,is there any assembly i am missing or the function is all together different ?
int width =Convert.ToInt32(Panel1.Width);
int height = Convert.ToInt32(Panel1.Height);
Bitmap bmp = new Bitmap(width,height);
Panel1.DrawToBitmap//no definition or missing assembly
I have a byteArray which I can only convert into an Image (Drawing.Image) I was wondering how I can display it a webpage. I used memoryStream as I dont want to user to have to download the image. Eventually I will use this to display images in google maps.. I can convert it into a graphic but once again not sure what I will do with it. The Error I have been getting lately is Cannot implicitly convert type 'System.Drawing.Image' to 'System.Web.UI.WebControls.ImageField'
[Code]....
I have a photo on my server image1.jpg in high resolution, and I need it to be resized everytime it is send to client depending with dimension I put but should not make extra file on disk.
I used aspjpeg for this in past but now I need something that can be used on servers that do not have aspjpeg instaled.
I use to store image in bytes and able to convert it to system.drawing.image but not sure how to render it on page
View 2 RepliesI have a webapplication based on MonoRail, where we utilize the routing feature from MonoRail. On the first request after the application has started, the routing isn't initialized. To circumvent this, I have the following code in Application_OnError():
public virtual void Application_OnError()
{
if ( // identified as routing error )
Server.TransferRequest( Context.Request.RawUrl, false );
return;
}
Problem beeing that on our development server (which runs server 2008 R2, with IIS 7.5 and .NET 3.5) returns a blank page without headers, but on my workstation (which runs win7, IIS 7.5 and .NET 3.5) it works fine.
What could be the cause of this? If the code in Application_OnError() throws an exception, what would be the expected output?
I have verified the following:
The access-log shows one entry, I'm not sure if a TransferRequest would show up as a second entry when invoked successfullyThe application actually do some work according to my internal logs, and it doesn't die since a subsequent requests works flawlessly (because routing will be active)
I got a variable of type System.Drawing.Image and need to convert it to a variable of type byte so I can store the image in the database. Can someone show me how to do that in VB.NET code.
View 2 RepliesI got a hard time with the Image.FromStream method in my website. The code below works perfect on my computer. But when I uploaded it to the test server, it always gives me "Parameter not valid" exception.
if (!afuImageFile.IsUploading && afuImageFile.HasFile)
{
System.Drawing.Image imgFile = System.Drawing.Image.FromStream(afuImageFile.FileContent);
}
the afuImageFile is an AsynFileUploader control in Ajax Tool Kits. afuImageFile.FileContent is a HttpInputStream.
I am trying to figure out how to get fresh photo album. I am able to upload pictures to the database and display them(using handler & listview), but when I go to create a new album it shows the previously uploaded pictures of the first one. In the database it shows a new ImageAlbumID so it is creating a new album, but just shows the old pictures of previously created albums. I want just a blank page with the AjaxUploader. the code:
<%@
Page Title=""
Language="VB"
MasterPageFile="~/masterpages/postmaster.master"
[code]...
I use imagebutton in gridview that when I click on it, it delete row of gridview..below is code...
protected void DeleteCustomer1(object sender, EventArgs e)
{
ImageButton IMGDelete = (ImageButton)sender;
}
private void DeleteProduct(ImageButton IMGDelete)
{
using (SqlConnection conn = General.GetConnection())
[code]....
but when I click on imagbutton it didn't do any thing..I put break point and checked @ID value that was "_page" and I checked IMG Delete. Command Argument value was "".I used .CommandArgument for Linkbutton in other page I don't know is it right to use it for imagebutton?
I have an ImageButton which sometimes returns the wrong coordinates when clicked. So far I have seen this problems only on one particular computer but on that system it is consistently out by a factor of about 1.25. The dimensions of the ImageButton are 300 x 450 but clicking in the lower left corner returns 374,562. However, if I raise a button click through code the correct region of the button is accessed and the correct coordinates can be recovered. The browser is IE running under XP SP3. On other computers with the same browser and operating system there is no problem but I don't know how widespread the problem could be. It is not affected by altering the screen resolution. Has anyone encountered this before? Is there a way to test and calibrate an imagebutton (without asking the user to click somewhere special first)?
View 4 RepliesI'm using asp.net with vb.net on my web application. I also have an SQL database which I need the 2d graphical "game" page to communicate with. Which programming language would be best for this? The user has to be able to click on an item and retrieve information from the SQL database, I don't know if java can link up with SQL
View 4 RepliesI've uploaded a simple Azure website (am testing out authentication) and have found this:http://mateerweb.cloudapp.net/ (live for next 12 hours or so!)Its supposed to look like this:Problem: How to get the live version looking like the test one on every deploy. After a recompile sometimes it works..
View 1 RepliesI have the following list of fonts:I have no issues with using them vianew Font("XXXX Sans", 21, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Pixel)However, what do i do when i need to use a non-standard font style like light? All that is provided is an enumeration and that is not suitable.
View 1 Replies