- ASP.NET Web Pages - Tutorial
- ASP.NET Web Pages - Adding Razor Code
- ASP.NET Web Pages - Page Layout
- ASP.NET Web Pages - Folders
- ASP.NET Web Pages - Global Pages
- ASP.NET Web Pages - HTML Forms
- ASP.NET Web Pages - Objects
- ASP.NET Web Pages - Files
- ASP.NET Web Pages - Databases
- ASP.NET Web Pages - Helpers
- ASP.NET Web Pages - The WebGrid Helper
- ASP.NET Web Pages - The Chart Helper
- ASP.NET Web Pages - The WebMail Helper
- ASP.NET Web Pages - WebSecurity Object
- ASP.NET Web Pages - Publishing The Website
- ASP.NET Web Pages - Classes
- ASP.NET Razor - Markup
- ASP.NET Razor - C# And VB Code Syntax
- ASP.NET Razor - C# Variables
- ASP.NET Razor - C# Loops And Arrays
- ASP.NET Razor - C# Logic Conditions
- ASP.NET Razor - VB Variables
- ASP.NET Razor - VB Loops And Arrays
- ASP.NET Razor - VB Logic Conditions
- ASP Tutorial
- ASP Syntax
- ASP Variables
- ASP Procedures
- VBScript Conditional Statements
- VBScript Looping
- ASP Forms And User Input
- ASP Cookies
- ASP Session Object
- ASP Application Object
- ASP Including Files
- ASP The Global.asa File
- ASP AJAX
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- VBScript Functions
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- ASP Response Object
- ASP Application Object
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- ASP AdRotator Component
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- ASP Content Rotator Component (ASP 3.0)
- ASP Quick Reference
- ADO Introduction
- ADO Database Connection
- ADO Recordset
- ADO Display
- ADO Queries
- ADO Sort
- ADO Add Records
- ADO Update Records
- ADO Delete Records
- ADO Demonstration
- ADO Speed Up With GetString()
- ADO Command Object
- ADO Connection Object
- ADO Error Object
- ADO Field Object
- ADO Parameter Object
- ADO Property Object
- ADO Record Object
- ADO Recordset Object
- ADO Stream Object
- ADO Data Types
ASP.NET Web Pages - Helpers
ASP.NET Helpers
ASP.NET helpers are components that can be accessed by single lines of Razor code.
You can build your own helpers using Razor syntax stored as .cshtml files, or use built-in ASP.NET helpers.
You will learn how to use Razor helpers in the next chapters of this tutorial.
The WebGrid Helper
The WebGrid helper simplifies the way to display data:
- Automatically sets up an HTML table to display data
- Supports different options for formatting
- Supports paging (First, next, previous, last) through data
- Supports sorting by clicking on column headings
The Chart Helper
The "Chart Helper" can display chart images of different types with many formatting options and labels.
The Chart helper can display data from arrays , from databases, or from files.
The WebMail Helper
The WebMail helper provides functions for sending email messages using SMTP (Simple Mail Transfer Protocol).
The WebImage Helper
The WebImage helper provides functionality to manage images in a web page.
Keywords: flip, rotate, resize, watermark.
Third Party Helpers
With Razor you can take advantage of built-in or third party helpers to simplify the use of email, databases, multimedia, and social networks as well as many other issues like navigation and web security.
Analytics (Google)
Helper | Description |
---|---|
Analytics.GetGoogleHtml(webPropertyId) | Renders the Google Analytics JavaScript code for the specified ID. |
Analytics.GetStatCounterHtml(project, security) | Renders the StatCounter Analytics JavaScript code for the specified project. |
Analytics.GetYahooHtml(account) | Renders the Yahoo Analytics JavaScript code for the specified account. |
Bing
Helper | Description |
---|---|
Bing.SearchBox([boxWidth]) | Passes a search to Bing. To specify the site to search and a title for the search box, you can set the Bing.SiteUrl and Bing.SiteTitle properties. Normally you set these properties in the _AppStart page. |
Bing.AdvancedSearchBox([, boxWidth] [, resultWidth] [, resultHeight] [, themeColor] [, locale]) |
Displays Bing search results in the page with optional formatting. To specify the site to search and a title for the search box, you can set the Bing.SiteUrl and Bing.SiteTitle properties. Normally you set these properties in the _AppStart page. |
Crypto
Helper | Description |
---|---|
Crypto.Hash(string [, algorithm]) Crypto.Hash(bytes [, algorithm]) |
Returns a hash for the specified data. The default algorithm is sha256. |
Helper | Description |
---|---|
Facebook.LikeButton(href [, buttonLayout] [, showFaces] [, width] [, height] [, action] [, font] [, colorScheme] [, refLabel]) |
Lets Facebook users make a connection to pages. |
FileUpload
Helper | Description |
---|---|
FileUpload.GetHtml([initialNumberOfFiles] [, allowMoreFilesToBeAdded] [, includeFormTag] [, addText] [, uploadText]) |
Renders UI for uploading files. |
GamerCard
Helper | Description |
---|---|
GamerCard.GetHtml(gamerTag) | Renders the specified Xbox gamer tag. |
Gravatar Object Reference
Helper | Description |
---|---|
Gravatar.GetHtml(email [, imageSize] [, defaultImage] [, rating] [, imageExtension] [, attributes]) |
Renders the Gravatar image for the specified email address. |
Json
Helper | Description |
---|---|
Json.Encode(object) | Converts a data object to a string in the JavaScript Object Notation (JSON) format. |
Json.Decode(string) | Converts a JSON-encoded input string to a data object that you can iterate over or insert into a database. |
LinkShare
Helper | Description |
---|---|
LinkShare.GetHtml(pageTitle [, pageLinkBack] [, twitterUserName] [, additionalTweetText] [, linkSites]) |
Renders social networking links using the specified title and optional URL. |
ModelState
Helper | Description |
---|---|
ModelStateDictionary.AddError(key, errorMessage) | Associates an error message with a form field. Use the ModelState helper to access this member. |
ModelStateDictionary.AddFormError(errorMessage) | Associates an error message with a form. Use the ModelState helper to access this member. |
ModelStateDictionary.IsValid | Returns true if there are no validation errors. Use the ModelState helper to access this member. |
ObjectInfo
Helper | Description |
---|---|
ObjectInfo.Print(value [, depth] [, enumerationLength]) | Renders the properties and values of an object and any child objects. |
Recaptcha
Helper | Description |
---|---|
Recaptcha.GetHtml([, publicKey] [, theme] [, language] [, tabIndex]) | Renders the reCAPTCHA verification test. |
ReCaptcha.PublicKey ReCaptcha.PrivateKey |
Sets public and private keys for the reCAPTCHA service. Normally you set these properties in the _AppStart page. |
ReCaptcha.Validate([, privateKey]) | Returns the result of the reCAPTCHA test. |
Helper | Description |
---|---|
Twitter.Profile(twitterUserName) | Renders a Twitter stream for the specified user. |
Twitter.Search(searchQuery) | Renders a Twitter stream for the specified search text. |
ServerInfo
Helper | Description |
---|---|
ServerInfo.GetHtml() | Renders status information about ASP.NET Web Pages. |
Video
Helper | Description |
---|---|
Video.Flash(filename [, width, height]) | Renders a Flash video player for the specified file with optional width and height. |
Video.MediaPlayer(filename [, width, height]) | Renders a Windows Media player for the specified file with optional width and height. |
Video.Silverlight(filename, width, height) | Renders a Silverlight player for the specified .xap file with required width and height. |
WebCache
Helper | Description |
---|---|
WebCache.Get(key) | Returns the object specified by key, or null if the object is not found. |
WebCache.Remove(key) | Removes the object specified by key from the cache. |
WebCache.Set(key, value [, minutesToCache] [, slidingExpiration]) | Puts value into the cache under the name specified by key. |
WebImage
Helper | Description |
---|---|
WebImage(path) | Loads an image from the specified path. |
WebImage.AddImagesWatermark(image) | Adds the specified image as a watermark. |
WebImage.AddTextWatermark(text) | Adds the specified text to the image. |
WebImage.FlipHorizontal() WebImage.FlipVertical() |
Flips the image horizontally or vertically. |
WebImage.GetImageFromRequest() | Loads an image when an image is posted to a page during a file upload. |
WebImage.Resize(width, height) | Resizes the image. |
WebImage.RotateLeft() WebImage.RotateRight() |
Rotates the image to the left or the right. |
WebImage.Save(path [, imageFormat]) | Saves the image to the specified path. |
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