最近經歷了原公司的變動，回老家呆了兩個月，回到深圳要開始一段新的作業旅程了，最近找作業的時候發現不少.Net的作業是關于WPF客戶端的，就又重新買了本劉鐵錳大神的WPF的書，之所以說重新，因為從原公司離開的時候把兩本WPF的書送給同事了，
但是學了一部分以后發現WPF真的還是很不錯的一項技術，暫且不討論.NET的生態(生態跟技術的優劣不能完全劃等號)，微軟算是比較早提出MVVM思想的框架，
今天就暫且把自己看過的內容的一部分做個記錄，為自己做一個階段的總結吧，現在的作業中可能用不到WPF，以后也可能用不到，
以下描述僅限于個人最近來自B站劉鐵猛的視頻資料和關于他的WPF書籍的一些整理，歡迎指正，如后續有其它心得就隨時整理，
我們先從一個簡單的demo談起.
當我們創建一個WPF程式后，會有一個檔案MainWindow.xaml和它對應的代碼后置檔案.我們先從這兩個檔案說起.
Mainwindow.xaml:當程式啟動時依托于App.xaml來加載Mainwindow.xaml來執行，
對應的后端代碼類MainWindow.xaml.cs
WPF中的MVVM
我們主要通過一個簡單地demo去體驗一下WPF的MVVM.
通過MVVM我們可以實作前端和后端的解耦.也可以更方便的切換前端的UI而不需要更改后臺代碼，
首先放上代碼的demo,如果感興趣可以任意下載.
鏈接：https://pan.baidu.com/s/1RIX6gcUCVCNGqi7vdX5SIg
提取碼：1314
目錄結構如下,因為我們這個例子只是一個demo,Model和View檔案夾并沒有內容,我們只是為了簡單說明MVVM.
程式運行結果呈現是這樣的:
其中AddCommand和DivideCommand是屬于我們自定義的一個型別DelegateCommand，這個型別最主要是我們繼承了一個ICommand介面并實作Execute方法.以便實作按鈕的點擊事件.
三個資料屬性在頁面值發生變化時會觸發RaisePropertyChange方法，該方法在我們的自定義類NoticeObject中，該類繼承自介面INotifyPropertyChange,并含有一個事件屬性PropertyChanged,實作資料的雙向系結實際上就是通過此事件來通知Binding實作.
最后我們就可以在利用組件的屬性設定資料的雙向系結，和回應的觸發操作.
然后如果想讓前后端屬性關聯起來，我們必須制定一個背景關系，即這些屬性和操作去匹配的位置.
夜已深,疫情也導致了上半年的養肥增膘.需要開啟鍛煉計劃了,后續會再整理之前看過的另一個更復雜的WPF的例子以及一些其它資料.
索性就在這里把第二個復雜點的例子粘上來，
也是來自于WPF大神劉鐵猛的示例.
我簡單的描述下.
鏈接：https://pan.baidu.com/s/1nbOLFF_TE7gnT8dV9b5CVw
提取碼：1314
代碼最終運行效果如下:
其實這個demo思想還是跟第一個例子一樣，最主要不同的有幾個地方:
(1)完善了Model類:
(2)在上一個demo中的自定義類DelegateCommand換成了命名空間Microsoft.Practices.Prism.Commands下的類DelegateCommand
上一個demo中的NotificationObject換成了命名空間Microsoft.Practices.Prism.ViewModel中的NotificationObject.
關于WPF我覺著比較重要的點就是怎么根據業務場景去定義Model和ViewModel（MVVM以資料驅動開發),Model更多的與物件直接相關,是現實世界實物的抽象;而ViewModel更多的是與程式運行界面相關,是界面屬性與功能的抽象.
后續:到今天是9.21號,抽空看了書中的系統學習XAML語法/深入淺出話Binding/深入淺出話屬性幾節,打算不再看下去了,實在提不起興趣學.NET Framework的閉源框架了,一直在學術而學不得道，就此告別吧，
<style>html { overflow-x: initial !important } :root { --bg-color: #ffffff; --text-color: #333333; --select-text-bg-color: #B5D6FC; --select-text-font-color: auto; --monospace: "Lucida Console",Consolas,"Courier",monospace } html { font-size: 14px; background-color: var(--bg-color); color: var(--text-color); font-family: "Helvetica Neue", Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased } body { margin: 0; padding: 0; height: auto; bottom: 0; top: 0; left: 0; right: 0; font-size: 1rem; line-height: 1.42857; overflow-x: hidden; tab-size: 4 } iframe { margin: auto } a.url { word-break: break-all } a:active, a:hover { outline: 0 } .in-text-selection, ::selection { text-shadow: none; background: var(--select-text-bg-color); color: var(--select-text-font-color) } #write { margin: 0 auto; height: auto; width: inherit; word-break: normal; overflow-wrap: break-word; position: relative; white-space: normal; overflow-x: visible; padding-top: 40px } #write.first-line-indent p { text-indent: 2em } #write.first-line-indent li p, #write.first-line-indent p * { text-indent: 0 } #write.first-line-indent li { margin-left: 2em } .for-image #write { padding-left: 8px; padding-right: 8px } body.typora-export { padding-left: 30px; padding-right: 30px } .typora-export .footnote-line, .typora-export li, .typora-export p { white-space: pre-wrap } .typora-export .task-list-item input { pointer-events: none } @media screen and (max-width: 500px) { body.typora-export { padding-left: 0; padding-right: 0 } #write { padding-left: 20px; padding-right: 20px } .CodeMirror-sizer { margin-left: 0 !important } .CodeMirror-gutters { display: none !important } } #write li>figure:last-child { margin-bottom: 0.5rem } #write ol, #write ul { position: relative } img { max-width: 100%; vertical-align: middle; image-orientation: from-image } button, input, select, textarea { color: inherit } input[type="checkbox"], input[type="radio"] { line-height: normal; padding: 0 } *, ::after, ::before { box-sizing: border-box } #write h1, #write h2, #write h3, #write h4, #write h5, #write h6, #write p, #write pre { width: inherit } #write h1, #write h2, #write h3, #write h4, #write h5, #write h6, #write p { position: relative } p { line-height: inherit } h1, h2, h3, h4, h5, h6 { break-after: avoid-page; break-inside: avoid; orphans: 4 } p { orphans: 4 } h1 { font-size: 2rem } h2 { font-size: 1.8rem } h3 { font-size: 1.6rem } h4 { font-size: 1.4rem } h5 { font-size: 1.2rem } h6 { font-size: 1rem } .md-math-block, .md-rawblock, h1, h2, h3, h4, h5, h6, p { margin-top: 1rem; margin-bottom: 1rem } .hidden { display: none } .md-blockmeta { color: rgba(204, 204, 204, 1); font-weight: 700; font-style: italic } a { cursor: pointer } sup.md-footnote { padding: 2px 4px; background-color: rgba(238, 238, 238, 0.7); color: rgba(85, 85, 85, 1); border-radius: 4px; cursor: pointer } sup.md-footnote a, sup.md-footnote a:hover { color: inherit; text-transform: inherit } #write input[type="checkbox"] { cursor: pointer; width: inherit; height: inherit } figure { overflow-x: auto; margin: 1.2em 0; max-width: calc(100% + 16px); padding: 0 } figure>table { margin: 0 } tr { break-inside: avoid; break-after: auto } thead { display: table-header-group } table { border-collapse: collapse; border-spacing: 0; width: 100%; overflow: auto; break-inside: auto; text-align: left } table.md-table td { min-width: 32px } .CodeMirror-gutters { border-right: 0; background-color: inherit } .CodeMirror-linenumber { user-select: none } .CodeMirror { text-align: left } .CodeMirror-placeholder { opacity: 0.3 } .CodeMirror pre { padding: 0 4px } .CodeMirror-lines { padding: 0 } div.hr:focus { cursor: none } #write pre { white-space: pre-wrap } #write.fences-no-line-wrapping pre { white-space: pre } #write pre.ty-contain-cm { white-space: normal } .CodeMirror-gutters { margin-right: 4px } .md-fences { font-size: 0.9rem; display: block; break-inside: avoid; text-align: left; overflow: visible; white-space: pre; position: relative !important } .md-diagram-panel { width: 100%; margin-top: 10px; text-align: center; padding-top: 0; padding-bottom: 8px; overflow-x: auto } #write .md-fences.mock-cm { white-space: pre-wrap } .md-fences.md-fences-with-lineno { padding-left: 0 } #write.fences-no-line-wrapping .md-fences.mock-cm { white-space: pre; overflow-x: auto } .md-fences.mock-cm.md-fences-with-lineno { padding-left: 8px } .CodeMirror-line, twitterwidget { break-inside: avoid } .footnotes { opacity: 0.8; font-size: 0.9rem; margin-top: 1em; margin-bottom: 1em } .footnotes+.footnotes { margin-top: 0 } .md-reset { margin: 0; padding: 0; border: 0; outline: 0; vertical-align: top; background: left top; text-decoration: none; text-shadow: none; float: none; position: static; width: auto; height: auto; white-space: nowrap; cursor: inherit; -webkit-tap-highlight-color: transparent; line-height: normal; font-weight: 400; text-align: left; box-sizing: content-box; direction: ltr } li div { padding-top: 0 } blockquote { margin: 1rem 0 } li .mathjax-block, li p { margin: 0.5rem 0 } li { margin: 0; position: relative } blockquote>:last-child { margin-bottom: 0 } blockquote>:first-child, li>:first-child { margin-top: 0 } .footnotes-area { color: rgba(136, 136, 136, 1); margin-top: 0.714rem; padding-bottom: 0.143rem; white-space: normal } #write .footnote-line { white-space: pre-wrap } @media print { body, html { border: 1px solid rgba(0, 0, 0, 0); height: 99%; break-after: avoid; break-before: avoid; font-variant-ligatures: no-common-ligatures } #write { margin-top: 0; padding-top: 0; border-color: rgba(0, 0, 0, 0) !important } .typora-export * { -webkit-print-color-adjust: exact } html.blink-to-pdf { font-size: 13px } .typora-export #write { break-after: avoid } .typora-export #write::after { height: 0 } .is-mac table { break-inside: avoid } } .footnote-line { margin-top: 0.714em; font-size: 0.7em } a img, img a { cursor: pointer } pre.md-meta-block { font-size: 0.8rem; min-height: 0.8rem; white-space: pre-wrap; background: rgba(204, 204, 204, 1); display: block; overflow-x: hidden } p>.md-image:only-child:not(.md-img-error) img, p>img:only-child { display: block; margin: auto } #write.first-line-indent p>.md-image:only-child:not(.md-img-error) img { left: -2em; position: relative } p>.md-image:only-child { display: inline-block; width: 100% } #write .MathJax_Display { margin: 0.8em 0 0 } .md-math-block { width: 100% } .md-math-block:not(:empty)::after { display: none } [contenteditable="true"]:active, [contenteditable="true"]:focus, [contenteditable="false"]:active, [contenteditable="false"]:focus { outline: 0; box-shadow: none } .md-task-list-item { position: relative; list-style-type: none } .task-list-item.md-task-list-item { padding-left: 0 } .md-task-list-item>input { position: absolute; top: 0; left: 0; margin-left: -1.2em; margin-top: calc(1em - 10px); border: none } .math { font-size: 1rem } .md-toc { min-height: 3.58rem; position: relative; font-size: 0.9rem; border-radius: 10px } .md-toc-content { position: relative; margin-left: 0 } .md-toc-content::after, .md-toc::after { display: none } .md-toc-item { display: block; color: rgba(65, 131, 196, 1) } .md-toc-item a { text-decoration: none } .md-toc-inner:hover { text-decoration: underline } .md-toc-inner { display: inline-block; cursor: pointer } .md-toc-h1 .md-toc-inner { margin-left: 0; font-weight: 700 } .md-toc-h2 .md-toc-inner { margin-left: 2em } .md-toc-h3 .md-toc-inner { margin-left: 4em } .md-toc-h4 .md-toc-inner { margin-left: 6em } .md-toc-h5 .md-toc-inner { margin-left: 8em } .md-toc-h6 .md-toc-inner { margin-left: 10em } @media screen and (max-width: 48em) { .md-toc-h3 .md-toc-inner { margin-left: 3.5em } .md-toc-h4 .md-toc-inner { margin-left: 5em } .md-toc-h5 .md-toc-inner { margin-left: 6.5em } .md-toc-h6 .md-toc-inner { margin-left: 8em } } a.md-toc-inner { font-size: inherit; font-style: inherit; font-weight: inherit; line-height: inherit } .footnote-line a:not(.reversefootnote) { color: inherit } .md-attr { display: none } .md-fn-count::after { content: "." } code, pre, samp, tt { font-family: var(--monospace) } kbd { margin: 0 0.1em; padding: 0.1em 0.6em; font-size: 0.8em; color: rgba(36, 39, 41, 1); background: rgba(255, 255, 255, 1); border: 1px solid rgba(173, 179, 185, 1); border-radius: 3px; box-shadow: 0 1px rgba(12, 13, 14, 0.2), inset 0 0 2px rgba(255, 255, 255, 1); white-space: nowrap; vertical-align: middle } .md-comment { color: rgba(162, 127, 3, 1); opacity: 0.8; font-family: var(--monospace) } code { text-align: left; vertical-align: initial } a.md-print-anchor { white-space: pre !important; border-style: none !important; display: inline-block !important; position: absolute !important; width: 1px !important; right: 0 !important; outline: 0 !important; background: left top !important; text-shadow: initial !important } .md-inline-math .MathJax_SVG .noError { display: none !important } .html-for-mac .inline-math-svg .MathJax_SVG { vertical-align: 0.2px } .md-math-block .MathJax_SVG_Display { text-align: center; margin: 0; position: relative; text-indent: 0; max-width: none; max-height: none; min-height: 0; min-width: 100%; width: auto; overflow-y: hidden; display: block !important } .MathJax_SVG_Display, .md-inline-math .MathJax_SVG_Display { width: auto; display: inline-block !important } .MathJax_SVG .MJX-monospace { font-family: var(--monospace) } .MathJax_SVG .MJX-sans-serif { font-family: sans-serif } .MathJax_SVG { display: inline; font-style: normal; font-weight: 400; line-height: normal; zoom: 90%; text-indent: 0; text-align: left; text-transform: none; letter-spacing: normal; word-spacing: normal; overflow-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0; min-height: 0; border: 0; padding: 0; margin: 0 } .MathJax_SVG * { } .MathJax_SVG_Display svg { vertical-align: middle !important; margin-bottom: 0 !important; margin-top: 0 !important } .os-windows.monocolor-emoji .md-emoji { font-family: "Segoe UI Symbol", sans-serif } .md-diagram-panel>svg { max-width: 100% } [lang="flow"] svg, [lang="mermaid"] svg { max-width: 100%; height: auto } [lang="mermaid"] .node text { font-size: 1rem } table tr th { border-bottom: 0 } video { max-width: 100%; display: block; margin: 0 auto } iframe { max-width: 100%; width: 100%; border: none } .highlight td, .highlight tr { border: 0 } svg[id^="mermaidChart"] { line-height: 1em } mark { background: rgba(255, 255, 0, 1); color: rgba(0, 0, 0, 1) } .md-html-inline .md-plain, .md-html-inline strong, mark .md-inline-math, mark strong { color: inherit } mark .md-meta { color: rgba(0, 0, 0, 1); opacity: 0.3 !important } @media print { .typora-export h1, .typora-export h2, .typora-export h3, .typora-export h4, .typora-export h5, .typora-export h6 { break-inside: avoid } .typora-export h1::after, .typora-export h2::after, .typora-export h3::after, .typora-export h4::after, .typora-export h5::after, .typora-export h6::after { content: ""; display: block; height: 100px; margin-bottom: -100px } } :root { --side-bar-bg-color: #fafafa; --control-text-color: #777 } @include-when-export url(https://fonts.loli.net/css?family=Open+Sans:400italic,700italic,700,400&subset=latin,latin-ext); html { font-size: 16px } body { font-family: "Open Sans", "Clear Sans", "Helvetica Neue", Helvetica, Arial, sans-serif; color: rgba(51, 51, 51, 1); line-height: 1.6 } #write { max-width: 860px; margin: 0 auto; padding: 30px 30px 100px } @media only screen and (min-width: 1400px) { #write { max-width: 1024px } } @media only screen and (min-width: 1800px) { #write { max-width: 1200px } } #write>ul:first-child, #write>ol:first-child { margin-top: 30px } a { color: rgba(65, 131, 196, 1) } h1, h2, h3, h4, h5, h6 { position: relative; margin-top: 1rem; margin-bottom: 1rem; font-weight: bold; line-height: 1.4; cursor: text } h1:hover a.anchor, h2:hover a.anchor, h3:hover a.anchor, h4:hover a.anchor, h5:hover a.anchor, h6:hover a.anchor { text-decoration: none } h1 tt, h1 code { font-size: inherit } h2 tt, h2 code { font-size: inherit } h3 tt, h3 code { font-size: inherit } h4 tt, h4 code { font-size: inherit } h5 tt, h5 code { font-size: inherit } h6 tt, h6 code { font-size: inherit } h1 { font-size: 2.25em; line-height: 1.2; border-bottom: 1px solid rgba(238, 238, 238, 1) } h2 { font-size: 1.75em; line-height: 1.225; border-bottom: 1px solid rgba(238, 238, 238, 1) } @media print { .typora-export h1, .typora-export h2 { border-bottom: none; padding-bottom: initial } .typora-export h1::after, .typora-export h2::after { border-top: 1px solid rgba(238, 238, 238, 1); margin-top: 0.3em } } h3 { font-size: 1.5em; line-height: 1.43 } h4 { font-size: 1.25em } h5 { font-size: 1em } h6 { font-size: 1em; color: rgba(119, 119, 119, 1) } p, blockquote, ul, ol, dl, table { margin: 0.8em 0 } li>ol, li>ul { margin: 0 } hr { height: 2px; padding: 0; margin: 16px 0; background-color: rgba(231, 231, 231, 1); border: 0 none; overflow: hidden; box-sizing: content-box } li p.first { display: inline-block } ul, ol { padding-left: 30px } ul:first-child, ol:first-child { margin-top: 0 } ul:last-child, ol:last-child { margin-bottom: 0 } blockquote { border-left: 4px solid rgba(223, 226, 229, 1); padding: 0 15px; color: rgba(119, 119, 119, 1) } blockquote blockquote { padding-right: 0 } table { padding: 0; word-break: initial } table tr { border-top: 1px solid rgba(223, 226, 229, 1); margin: 0; padding: 0 } table tr:nth-child(2n), thead { background-color: rgba(248, 248, 248, 1) } table tr th { font-weight: bold; border-top: 1px solid rgba(223, 226, 229, 1); border-right: 1px solid rgba(223, 226, 229, 1); border-bottom: 0; border-left: 1px solid rgba(223, 226, 229, 1); margin: 0; padding: 6px 13px } table tr td { border: 1px solid rgba(223, 226, 229, 1); margin: 0; padding: 6px 13px } table tr th:first-child, table tr td:first-child { margin-top: 0 } table tr th:last-child, table tr td:last-child { margin-bottom: 0 } .CodeMirror-lines { padding-left: 4px } .code-tooltip { box-shadow: 0 1px 1px rgba(0, 28, 36, 0.3); border-top: 1px solid rgba(238, 242, 242, 1) } .md-fences, code, tt { border: 1px solid rgba(231, 234, 237, 1); background-color: rgba(248, 248, 248, 1); border-radius: 3px; padding: 2px 4px 0; font-size: 0.9em } code { background-color: rgba(243, 244, 244, 1); padding: 0 2px } .md-fences { margin-bottom: 15px; margin-top: 15px; padding-top: 8px; padding-bottom: 6px } .md-task-list-item>input { margin-left: -1.3em } @media print { html { font-size: 13px } table, pre { page-break-inside: avoid } pre { word-wrap: break-word } } .md-fences { background-color: rgba(248, 248, 248, 1) } #write pre.md-meta-block { padding: 1rem; font-size: 85%; line-height: 1.45; background-color: rgba(247, 247, 247, 1); border: 0; border-radius: 3px; color: rgba(119, 119, 119, 1); margin-top: 0 !important } .mathjax-block>.code-tooltip { bottom: 0.375rem } .md-mathjax-midline { background: rgba(250, 250, 250, 1) } #write>h3.md-focus:before { left: -1.5625rem; top: 0.375rem } #write>h4.md-focus:before { left: -1.5625rem; top: 0.285714286rem } #write>h5.md-focus:before { left: -1.5625rem; top: 0.285714286rem } #write>h6.md-focus:before { left: -1.5625rem; top: 0.285714286rem } .md-image>.md-meta { border-radius: 3px; padding: 2px 0 0 4px; font-size: 0.9em; color: inherit } .md-tag { color: rgba(167, 167, 167, 1); opacity: 1 } .md-toc { margin-top: 20px; padding-bottom: 20px } .sidebar-tabs { border-bottom: none } #typora-quick-open { border: 1px solid rgba(221, 221, 221, 1); background-color: rgba(248, 248, 248, 1) } #typora-quick-open-item { background-color: rgba(250, 250, 250, 1); border-top: 1px solid rgba(254, 254, 254, 1); border-right: 1px solid rgba(229, 229, 229, 1); border-bottom: 1px solid rgba(229, 229, 229, 1); border-left: 1px solid rgba(238, 238, 238, 1) } .on-focus-mode blockquote { border-left-color: rgba(85, 85, 85, 0.12) } header, .context-menu, .megamenu-content, footer { font-family: "Segoe UI", "Arial", sans-serif } .file-node-content:hover .file-node-icon, .file-node-content:hover .file-node-open-state { visibility: visible } .mac-seamless-mode #typora-sidebar { background-color: var(--side-bar-bg-color) } .md-lang { color: rgba(180, 101, 77, 1) } .html-for-mac .context-menu { --item-hover-bg-color: #E6F0FE } #md-notification .btn { border: 0 } .dropdown-menu .divider { border-color: rgba(229, 229, 229, 1) } .ty-preferences .window-content { background-color: rgba(250, 250, 250, 1) } .ty-preferences .nav-group-item.active { color: rgba(255, 255, 255, 1); background: rgba(153, 153, 153, 1) }</style>轉載請註明出處，本文鏈接：https://www.uj5u.com/net/93330.html
標籤：WPF