ASP.NET Webbladsye - Helpers
Web Helpers vereenvoudig webontwikkeling en algemene programmeringstake aansienlik.
ASP.NET Helpers
ASP.NET-helpers is komponente wat verkry kan word deur enkele reëls van Razor-kode.
Jy kan jou eie helpers bou met behulp van Razor-sintaksis wat as .cshtml-lêers gestoor is, of ingeboude ASP.NET-helpers gebruik.
Jy sal leer hoe om Skeermes helpers in die volgende hoofstukke van hierdie tutoriaal te gebruik.
Hieronder is 'n kort beskrywing van 'n paar nuttige Razor helpers:
Die WebGrid Helper
Die WebGrid-helper vereenvoudig die manier om data te vertoon:
- Stel outomaties 'n HTML-tabel op om data te vertoon
- Ondersteun verskillende opsies vir formatering
- Ondersteun blaai (Eerste, volgende, vorige, laaste) deur data
- Ondersteun sortering deur op kolomopskrifte te klik
Die Chart Helper
Die "Chart Helper" kan grafiekbeelde van verskillende tipes met baie formatering opsies en etikette vertoon.
Die Grafiekhulp kan data vanaf skikkings, vanaf databasisse of vanaf lêers vertoon.
Die WebMail Helper
Die WebMail-helper verskaf funksies vir die stuur van e-posboodskappe met SMTP (Simple Mail Transfer Protocol).
Die WebImage Helper
Die WebImage-helper bied funksionaliteit om beelde in 'n webblad te bestuur.
Sleutelwoorde: draai, draai, verander grootte, watermerk.
Derdeparty-helpers
Met Razor kan jy voordeel trek uit ingeboude of derdeparty-helpers om die gebruik van e-pos, databasisse, multimedia en sosiale netwerke sowel as baie ander kwessies soos navigasie en websekuriteit te vereenvoudig.
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. |
Kripto
| 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. |
LêerOplaai
| Helper | Description |
|---|---|
| FileUpload.GetHtml([initialNumberOfFiles]
[, allowMoreFilesToBeAdded] [, includeFormTag] [, addText] [, uploadText]) | Renders UI for uploading files. |
Spelerkaart
| Helper | Description |
|---|---|
| GamerCard.GetHtml(gamerTag) | Renders the specified Xbox gamer tag. |
Gravatar-objekverwysing
| 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. |
Bedienerinligting
| Helper | Description |
|---|---|
| ServerInfo.GetHtml() | Renders status information about ASP.NET Web Pages. |
| 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. |
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. |
Webkas
| 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. |
WebBeeld
| 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. |