.NET news » Search results

A simple viewer of images stored in the DICOM 3.0 File Format (C#). The file should have raw pixel data, uncompressed. Window Level functionality is also provided.

An application I was recently working on received PDF files from a webservice which it then needed to store in a database. I wanted the ability to display previews of these documents within the application. While there are a number of solutions for creating PDF files from C#, options for viewing a P

This article shows how to generate some column chart images for your users on a easy way. You can simply give some arguments to the class library and receive back an image object, or directly save it on hard disk.

SQL Server's new FILESTREAM feature simplifies the process of keeping file-based data, such as images, in sync with relational data.

This article explores the three different techniques the Microsoft Chart Controls has at its disposal for generating chart images. Well look at how to use each option, enumerate the pros and cons, and discuss when to consider using one option over another.

Demonstrates an e-commerce style grid with product comparison checkboxes, sorting, images in a database, expandible/collapsible product summary, selectable row display, and product comparison page.

The Microsoft Chart controls are a series of classes in the System.Web.UI.DataVisualization.Charting namespace that allow web developers to ability to add charts to their ASP.NET applications. The most pertinent charting-related class is the Chart class, which contains information about the chart's appearance, series, charting areas, and so forth. In most of the demos and code samples we've explored thus far, we've used the Chart class as a Web control, adding the <asp:Chart> declarative markup to our ASP.NET page, setting a few properties and, occasionally, writing a few lines of code. When used as a Web control, the Chart class both creates the chart (as an image) and then renders an <img> element that points to the generated chart image.

Using the Chart Web control is a standard practice in a WebForms application, but it is not suggested when building an ASP.NET MVC application. (While it is possible to add Web controls - including the Chat Web control - to the views of an ASP.NET MVC application, it is generally frowned upon.) So, if we can't use the Chart Web control in an ASP.NET MVC application, how do we display a chart? In addition to being used as a Web control, the Chart class can also be used programmatically. It is quite possible to create a new Chart object, set some properties, plot the data points, and then generate the chart image. In fact, we looked at using this technique in an earlier installment, Programmatically Generating Chart Images, in which we saw (among other things) how to generate chart images programmatically and add them as attachments in an email message.

This article explores how to display charts in an ASP.NET MVC application.

Shows how to dynamically get the coordinates of the street address property and compute the exact Virtual Earth map tile, download and display in the control from memory. Supports aerial, road and hybrid images, image size, and zoom level.

The new HTML5 canvas element gives you the power to create and manipulate images and animations on the fly. And it’s not just for complex projects like games. As Brandon Satrom demonstrates, you can use it to do some pretty cool data visualization as well.

ASP.NET version 2.0 includes a wide array of Web controls not found in previous versions. One such control is the TreeView, which is ideal for displaying hierarchical data. The TreeView control can be bound to a hierarchical data source such as the XmlDataSource or SiteMapDataSource, or can be constructed programmatically.

One common source of hierarchical data is the web server's file system. In many scenarios, there may be a folder that contains subfolders and files that the user needs to be able to browse. Using the classes in the System.IO namespace, we can programmatically populate the TreeView with the directory structure of our website. Then, when the user clicks a folder, the selected folder's files can be displayed.

In this article we will examine how to create a simple image gallery web page that's a breeze to maintain. The image gallery lacks the bells and whistles found in more complex and feature-rich image galleries, but this one is a cinch to deploy and maintain. We'll be using two Web controls: a TreeView to list the folders and subfolders in which the images reside; and a DataList control that lists each image in the selected folder..