FluentValidation in Blazor: A Complete Guide
Improve your Blazor form validation with FluentValidation. Cleaner code, better UX, and advanced validation rules made simple.
");mask-image:url("data:image/svg+xml;utf8,");-webkit-mask-position:center center;mask-position:center center;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;-webkit-mask-size:cover;mask-size:cover;background:var(--color-text-white)}body .ascendoor-button.ascendoor-button-noborder-noalternate a{color:var(--primary-color);background:0 0;padding:0}body .ascendoor-button.ascendoor-button-noborder-noalternate a:before{display:none}body .ascendoor-button.ascendoor-button-noborder-noalternate a:after{background:var(--primary-color)}input[type=search]{color:#666;border:1px solid #ccc;border-radius:3px;padding:3px}.right-sidebar .ascendoor-wrapper .ascendoor-page{display:grid;grid-gap:30px;grid-template-columns:auto 25%;grid-template-areas:"main sidebar";padding-top:50px}@media (max-width:991px){.right-sidebar .ascendoor-wrapper .ascendoor-page{grid-template-columns:1fr;grid-template-areas:"main" "sidebar"}}.right-sidebar .ascendoor-wrapper .ascendoor-page .site-main{grid-area:main;overflow:hidden}.right-sidebar .ascendoor-wrapper .ascendoor-page .widget-area{grid-area:sidebar}.left-sidebar .ascendoor-wrapper .ascendoor-page .site-main{grid-area:main;overflow:hidden}.left-sidebar .ascendoor-wrapper .ascendoor-page .widget-area{grid-area:sidebar}.main-navigation{display:block;width:100%}.main-navigation ul{display:none;list-style:none;margin:0;padding-left:0}.main-navigation li{position:relative}.main-navigation a{color:#fff;padding:17px 20px;font-size:.9375rem;color:var(--text-color-main);text-transform:uppercase;display:block;text-decoration:none;opacity:.9}@media (min-width:992px){.main-navigation a{font-weight:700}}.menu-toggle{display:block}@media (max-width:991px){.main-navigation ul a{color:#000}}@media screen and (min-width:992px){.menu-toggle{display:none}.main-navigation ul{display:flex!important;flex-wrap:wrap;margin-inline-end:-20px;align-items:stretch}}@media (max-width:991px){.bottom-header-part-wrapper .navigation-part{align-items:center}#site-navigation button.menu-toggle{width:35px;height:35px;position:relative;transform:rotate(0deg);padding:0;background:0 0;border:none;margin:9px 5px 9px auto}#site-navigation button.menu-toggle span{display:block;position:absolute;height:3px;width:100%;background:var(--primary-color);border-radius:3px;opacity:1;left:0;transform:rotate(0deg)}#site-navigation button.menu-toggle span:nth-child(1){top:calc(50% - 15px)}#site-navigation button.menu-toggle span:nth-child(2){top:50%;transform:translateY(-50%)}#site-navigation button.menu-toggle span:nth-child(3){bottom:calc(50% - 15px)}#site-navigation .main-navigation-links{position:fixed;right:-130%;height:100%;top:0;background-color:#fff;min-width:300px;padding-top:60px;padding-right:10px;width:60%;display:block;border-right:1px solid #fff;z-index:13;box-shadow:2px 0 18px 0 rgba(0,0,0,.5);opacity:0;visibility:hidden}}@media (max-width:600px){#site-navigation button.menu-toggle{margin:0;margin-inline-end:auto}}@media (max-width:480px){#site-navigation .main-navigation-links{width:80%}}.post{margin:0 0 1.7em}.updated:not(.published){display:none}.site-main article{margin-bottom:2.5rem}.site-main article .post-thumbnail{display:block;line-height:0}.site-main article .post-thumbnail img{width:100%}.travel-post-single .travel-post-img{overflow:hidden;aspect-ratio:1/0.7}.travel-post-single .travel-post-img a{display:block;height:100%}.travel-post-single .travel-post-img a img{height:100%;width:100%;object-fit:cover}.travel-post-single .travel-post-detail{padding-top:15px}.travel-post-single .travel-post-detail .ascendoor-cat-links a{font-weight:700;text-decoration:none;color:var(--text-color-main);display:inline-block;margin-inline-end:5px;margin-block-end:5px}.travel-post-single .travel-post-detail .travel-post-title{font-size:var(--font-size-md);line-height:1.2;margin-top:0;font-family:var(--font-main);margin-bottom:10px}.travel-post-single .travel-post-detail .travel-post-title a{text-decoration:none;color:var(--text-color-main);display:inline-block}.travel-post-single .travel-post-detail .travel-meta{font-size:var(--font-size-sm);margin-bottom:10px}.travel-post-single .travel-post-detail .travel-meta a{text-decoration:none;color:var(--text-color-main)}.travel-post-single .travel-post-detail .travel-exverpt{margin-bottom:10px}.travel-post-single .travel-post-detail .ascendoor-button{display:inline-block}.archive-layout{margin-block:30px}.archive-layout.grid-style{display:grid;grid-gap:30px}.archive-layout.grid-style article{margin-bottom:0}.archive-layout.grid-style.column-2{grid-template-columns:repeat(2,minmax(0,1fr))}@media (max-width:480px){.archive-layout.grid-style.column-2{grid-template-columns:repeat(1,minmax(0,1fr))}}.wp-block-latest-posts.wp-block-latest-posts__list{list-style:none;padding-left:0;margin-inline:0}.wp-block-latest-posts.wp-block-latest-posts__list li>a{text-decoration:none;color:var(--color-text-main)}nav.breadcrumb-trail ul.trail-items{list-style:none;padding:0;margin:0;color:var(--color-text-main)}nav.breadcrumb-trail ul.trail-items li{display:inline-block}nav.breadcrumb-trail ul.trail-items li a{text-decoration:none;color:var(--color-text-main)}nav.breadcrumb-trail ul.trail-items li:after{margin:0 .3rem}nav.breadcrumb-trail ul.trail-items li:last-child:after{display:none}.widget{margin:0 0 1.5em}.widget h2{font-size:var(--font-size-base);font-family:var(--font-main);line-height:1.3;margin:0 0 20px;position:relative}.widget ul{padding:0;margin:0;list-style:none}.widget ul li{font-size:14px;line-height:1.5em}.widget ul.children li.cat-item{margin:0 0 0 3em}.widget ul li a{text-decoration:none;color:var(--color-text-main)}.widget ul>li:not(:last-child){margin-bottom:7px;padding-bottom:7px;border-bottom:1px solid rgba(0,0,0,.1)}.custom-logo-link{display:inline-block}.screen-reader-text{border:0;clip:rect(1px,1px,1px,1px);clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute!important;width:1px;word-wrap:normal!important}#loader{overflow-x:hidden;overflow-y:hidden;vertical-align:middle;background-color:var(--background-color-white);position:fixed;display:table;width:100%;top:0;left:0;height:100%;min-height:100%;z-index:99999}#loader .loader-container{position:relative;display:table-cell;vertical-align:middle;z-index:12;text-align:center;text-transform:uppercase}#loader .loader-container #preloader{position:relative;margin:auto;width:75px}#loader .loader-container #preloader.loader-1 .dot{height:30px;aspect-ratio:2.5;--_g:no-repeat radial-gradient(farthest-side,var(--primary-color) 90%,#0000);background:var(--_g),var(--_g),var(--_g),var(--_g);background-size:20% 50%;animation:d4 1s infinite linear alternate}@keyframes d4{0%,5%{background-position:calc(0*100%/3) 50%,calc(1*100%/3) 50%,calc(2*100%/3) 50%,calc(3*100%/3) 50%}12.5%{background-position:calc(0*100%/3) 0,calc(1*100%/3) 50%,calc(2*100%/3) 50%,calc(3*100%/3) 50%}25%{background-position:calc(0*100%/3) 0,calc(1*100%/3) 0,calc(2*100%/3) 50%,calc(3*100%/3) 50%}37.5%{background-position:calc(0*100%/3) 100%,calc(1*100%/3) 0,calc(2*100%/3) 0,calc(3*100%/3) 50%}50%{background-position:calc(0*100%/3) 100%,calc(1*100%/3) 100%,calc(2*100%/3) 0,calc(3*100%/3) 0}62.5%{background-position:calc(0*100%/3) 50%,calc(1*100%/3) 100%,calc(2*100%/3) 100%,calc(3*100%/3) 0}75%{background-position:calc(0*100%/3) 50%,calc(1*100%/3) 50%,calc(2*100%/3) 100%,calc(3*100%/3) 100%}87.5%{background-position:calc(0*100%/3) 50%,calc(1*100%/3) 50%,calc(2*100%/3) 50%,calc(3*100%/3) 100%}95%,100%{background-position:calc(0*100%/3) 50%,calc(1*100%/3) 50%,calc(2*100%/3) 50%,calc(3*100%/3) 50%}}#loader .loader-container #preloader.loader-4 .dot:before,#loader .loader-container #preloader.loader-4 .dot:after{content:"";height:inherit;aspect-ratio:1;grid-area:1/1;margin:auto;border-radius:50%;transform-origin:-100% 50%;background:currentColor;animation:d9 1s infinite linear}@keyframes d9{58%,100%{transform:rotate(calc(var(--s,1)*1turn))}}header.site-header{position:relative}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part{background:0 0;padding-block:10px}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper{display:flex;align-items:center;flex-wrap:wrap;justify-content:space-between}@media (max-width:600px){header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper{flex-direction:column;align-items:unset}}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding{display:flex;align-items:center;gap:10px}@media (max-width:600px){header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding{flex-direction:column;align-items:unset;text-align:center}}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-logo{width:50px}@media (max-width:600px){header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-logo{width:auto;max-width:150px;margin-inline:auto}}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-identity .site-title{font-size:30px;line-height:1.1;font-weight:700;margin:0}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-identity .site-title a{text-decoration:none;color:var(--color-text-white)}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-identity .site-description{margin-bottom:0;margin-top:5px;color:var(--color-text-white)}@media (max-width:480px){header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-identity .site-description{font-size:.8rem;margin-top:0}}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part{display:flex;align-items:center;gap:10px}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search{position:relative;display:inline-block;text-align:center}@media (max-width:600px){header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search{position:unset}}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-icon{display:flex;justify-content:center;align-items:center;width:35px;height:35px;border-radius:50%;background-color:var(--primary-color);font-size:14px;color:var(--color-text-white);font-weight:700;text-align:center;text-decoration:none;outline:0}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-form{position:absolute;background:#fff;inset-inline-end:0;opacity:0;visibility:hidden;top:100%;width:325px;padding:14px;z-index:99;box-shadow:0 8px 20px rgba(0,0,0,.2)}@media (max-width:600px){header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-form{width:100%}}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-form .search-form{display:flex}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-form .search-form label{width:75%}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-form .search-form label input{width:100%;border-radius:0}header.site-header .header-main-wrapper .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .navigation-part .header-search .header-search-wrap .header-search-form .search-form input.search-submit{border:1px solid var(--primary-color);border-radius:0;padding:0;font-size:13px;width:25%;margin:0}header.site-header .header-main-wrapper:not(.transparent-header){background-color:#fff}header.site-header .header-main-wrapper:not(.transparent-header) .bottom-header-outer-wrapper .bottom-header-part{border-bottom:1px solid #f3f1ef}header.site-header .header-main-wrapper:not(.transparent-header) .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-identity .site-title a{color:var(--header-text-color)}header.site-header .header-main-wrapper:not(.transparent-header) .bottom-header-outer-wrapper .bottom-header-part .bottom-header-part-wrapper .site-branding .site-identity .site-description{color:var(--color-text-main)}a.explore-blog-scroll-to-top{position:fixed;bottom:55px;right:30px;height:50px;width:50px;opacity:0;visibility:hidden;z-index:17;display:flex;align-items:center;justify-content:center;text-decoration:none;color:var(--color-text-white);background-color:var(--primary-color);border:1px solid var(--color-text-white)}:root{--header-text-color:#0591bc}:root{--font-heading:"Montserrat",serif;--font-main:-apple-system,BlinkMacSystemFont,"Poppins","Segoe UI",Montserrat,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif}body,button,input{font-family:"Poppins",serif}.site-title a{font-family:"Montserrat",serif}.site-description{font-family:"Montserrat",serif}:root{--hcb--fz:var(--hcb--fz--base,14px);--hcb--ff:"Menlo","Consolas","Hiragino Kaku Gothic ProN","Hiragino Sans","Meiryo",sans-serif;--hcb--pY:1.75em;--hcb--pX:1.5em;--hcb--radius:3px;--hcb--linenumW:3.5ch;--hcb--data-label:attr(data-lang);--hcb--btn-offset:20px;--hcb--c:#1f1e1e;--hcb--tsh:unset;--hcb--bgc:#f8f6f6;--hcb--data-label--c:#1f1e1e;--hcb--data-label--bgc:#e8e8e8;--hcb--line-numbers--c:#999;--hcb--highlight-color:#9678641a;--hcb--file-icon:url(/wp-content/plugins/highlighting-code-block/assets/img/file-icon-light.svg);--hcb--scbar-track--bgc:#9696961a;--hcb--scbar-thumb--bgc:#96969640}:root{--hcb--c:#f9f9f6;--hcb--bgc:#2d2e29;--hcb--data-label--c:#fff;--hcb--data-label--bgc:#20211f;--hcb--line-numbers--c:#a3a3a3;--hcb--highlight-color:#fffaf51a;--hcb--file-icon:url(/wp-content/plugins/highlighting-code-block/assets/img/file-icon-dark.svg);--hcb--scbar-track--bgc:#ffffff1a;--hcb--scbar-thumb--bgc:#fff3}@media screen and (max-width:599px){:root{--hcb--fz:var(--hcb--fz--mobile,13px)}}:root{--hcb--fz--base:14px}:root{--hcb--fz--mobile:13px}:root{--hcb--ff:Menlo,Consolas,"Hiragino Kaku Gothic ProN","Hiragino Sans",Meiryo,sans-serif}.trail-items li:after{content:"/"}:root{--wpforms-field-border-radius:3px;--wpforms-field-background-color:#fff;--wpforms-field-border-color:rgba(0,0,0,.25);--wpforms-field-text-color:rgba(0,0,0,.7);--wpforms-label-color:rgba(0,0,0,.85);--wpforms-label-sublabel-color:rgba(0,0,0,.55);--wpforms-label-error-color:#d63637;--wpforms-button-border-radius:3px;--wpforms-button-background-color:#066aab;--wpforms-button-text-color:#fff;--wpforms-field-size-input-height:43px;--wpforms-field-size-input-spacing:15px;--wpforms-field-size-font-size:16px;--wpforms-field-size-line-height:19px;--wpforms-field-size-padding-h:14px;--wpforms-field-size-checkbox-size:16px;--wpforms-field-size-sublabel-spacing:5px;--wpforms-field-size-icon-size:1;--wpforms-label-size-font-size:16px;--wpforms-label-size-line-height:19px;--wpforms-label-size-sublabel-font-size:14px;--wpforms-label-size-sublabel-line-height:17px;--wpforms-button-size-font-size:17px;--wpforms-button-size-height:41px;--wpforms-button-size-padding-h:15px;--wpforms-button-size-margin-top:10px}.wpforms-container .wpforms-form *{word-break:break-word;hyphens:auto;box-sizing:border-box;-webkit-box-sizing:border-box;-moz-box-sizing:border-box}.wpforms-container .wpforms-submit-spinner{margin-left:15px;display:inline-block;vertical-align:middle}.wpforms-container .wpforms-hidden{display:none!important}div.wpforms-container-full *{background:0 0;border:0 none;border-radius:0;-webkit-border-radius:0;-moz-border-radius:0;float:none;font-size:100%;height:auto;letter-spacing:normal;outline:none;position:static;text-indent:0;text-shadow:none;text-transform:none;width:auto;visibility:visible;overflow:visible;margin:0;padding:0;box-sizing:border-box;-webkit-box-sizing:border-box;-moz-box-sizing:border-box;-webkit-box-shadow:none;-moz-box-shadow:none;-ms-box-shadow:none;-o-box-shadow:none;box-shadow:none}div.wpforms-container-full input{margin:0;border:0;padding:0;vertical-align:middle;background:0 0;height:auto;box-sizing:border-box}div.wpforms-container-full .wpforms-form .wpforms-submit-spinner{max-width:26px}div.wpforms-container-full input{height:var(--wpforms-field-size-input-height)}
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