{"id":1419,"date":"2021-11-29T13:48:47","date_gmt":"2021-11-29T13:48:47","guid":{"rendered":"https:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/?p=1419"},"modified":"2021-11-29T13:59:57","modified_gmt":"2021-11-29T13:59:57","slug":"horror-no-encuentro-el-fichero-startup-cs","status":"publish","type":"post","link":"https:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/horror-no-encuentro-el-fichero-startup-cs\/","title":{"rendered":"\u00a1Horror! No encuentro el fichero Startup.cs"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1429\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Net6.png\" alt=\"\" width=\"877\" height=\"511\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Net6.png 877w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Net6-300x175.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Net6-768x447.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Net6-610x355.png 610w\" sizes=\"auto, (max-width: 877px) 100vw, 877px\" \/><\/p>\n<p>Para los desarrolladores de .Net, es habitual usar el archivo\u00a0<em>Startup.cs<\/em>, que viene por defecto en ciertas plantillas de proyecto (entre ellas las de proyectos de Web y de Api), para realizar determinadas tareas que deben ejecutarse al inicio. Pero, <strong>al crear un proyecto de Web y de Api con .Net 6<\/strong>, podemos apreciar que ya\u00a0<strong>no existe este fichero\u00a0<em>Startup.cs&#8230;<\/em><\/strong>y en ese caso \u00bfd\u00f3nde ponemos nuestra configuraci\u00f3n?<\/p>\n<p><!--more--><\/p>\n<h2>\u00bfCu\u00e1ndo se ha omitido este fichero y por qu\u00e9?<\/h2>\n<p><strong>A mediados de agosto se anunciaba la Preview 7 de .Net 6<\/strong>\u00a0trayendo consigo numerosas novedades y, entre ellas,\u00a0aparec\u00eda el cambio en las plantillas de proyectos web, m\u00e1s concretamente se nombraba ASP.NET MVC template,\u00a0indicando que los archivos\u00a0<em>Program.cs<\/em>\u00a0y\u00a0<em>Startup.cs\u00a0<\/em>se fusionaban en un \u00fanico fichero, prevaleciendo\u00a0<em>Program.cs<\/em>.<\/p>\n<p>\u00bfPor qu\u00e9? No\u00a0hay una raz\u00f3n con demasiado peso que apoye el cambio, aunque s\u00ed que parece l\u00f3gico que, para simplificar, <strong>es mejor trabajar<\/strong>\u00a0<strong>con un \u00fanico fichero como punto de entrada<\/strong>\u00a0y no tener cosas por separado entre Program.cs y Startup.cs.<\/p>\n<h2>Y ahora \u00bfc\u00f3mo queda todo esto?<\/h2>\n<p>Teniendo en cuenta que ya sabemos que Program.cs ha asumido las funciones que ten\u00eda Startup.cs, es sencillo de entender que <strong>debemos pasar al fichero \u00fanico todo lo que vayamos a hacer.<\/strong> No obstante,\u00a0veamos c\u00f3mo trabajarlo de forma resumida. Para ello, vamos a crear sendos proyectos de Api con .Net 6 y .Net 3.1 y vamos a comparar.<\/p>\n<p>El primer paso es crear un proyecto con .Net 6 y lo configuramos con autenticaci\u00f3n de Windows Identity por ejemplo.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-1891\" src=\"https:\/\/blog.santiagoporras.com\/wp-content\/uploads\/2021\/11\/image-8.png\" sizes=\"(max-width: 1011px) 100vw, 1011px\" srcset=\"\/wp-content\/uploads\/2021\/11\/image-8.png 1011w, \/wp-content\/uploads\/2021\/11\/image-8-300x199.png 300w, \/wp-content\/uploads\/2021\/11\/image-8-768x510.png 768w, \/wp-content\/uploads\/2021\/11\/image-8-720x479.png 720w\" alt=\"\" \/><\/figure>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-1892\" src=\"https:\/\/blog.santiagoporras.com\/wp-content\/uploads\/2021\/11\/image-9.png\" sizes=\"(max-width: 1010px) 100vw, 1010px\" srcset=\"\/wp-content\/uploads\/2021\/11\/image-9.png 1010w, \/wp-content\/uploads\/2021\/11\/image-9-300x201.png 300w, \/wp-content\/uploads\/2021\/11\/image-9-768x516.png 768w, \/wp-content\/uploads\/2021\/11\/image-9-720x483.png 720w\" alt=\"\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1420\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project.png\" alt=\"\" width=\"1581\" height=\"1059\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project.png 1581w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project-300x201.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project-1024x686.png 1024w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project-768x514.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project-1536x1029.png 1536w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/create-new-project-610x409.png 610w\" sizes=\"auto, (max-width: 1581px) 100vw, 1581px\" \/><\/figure>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1421\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project.png\" alt=\"\" width=\"1605\" height=\"1031\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project.png 1605w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project-300x193.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project-1024x658.png 1024w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project-768x493.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project-1536x987.png 1536w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/configure-new-project-610x392.png 610w\" sizes=\"auto, (max-width: 1605px) 100vw, 1605px\" \/><\/p>\n<p>Ahora procedemos a crear un proyecto con .Net Core 3.1 (o .Net 5 si lo prefer\u00eds) y seleccionamos el mismo tipo de autenticaci\u00f3n.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1422\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information.png\" alt=\"\" width=\"1605\" height=\"1074\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information.png 1605w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information-300x201.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information-1024x685.png 1024w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information-768x514.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information-1536x1028.png 1536w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/aditional-information-610x408.png 610w\" sizes=\"auto, (max-width: 1605px) 100vw, 1605px\" \/><\/p>\n<figure class=\"wp-block-image size-large\"><\/figure>\n<p>Una vez creados los proyectos, podemos apreciar que el creado con .Net Core 3.1, s\u00ed posee el fichero Startup.cs.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-1895\" src=\"https:\/\/blog.santiagoporras.com\/wp-content\/uploads\/2021\/11\/image-12.png\" sizes=\"(max-width: 690px) 100vw, 690px\" srcset=\"\/wp-content\/uploads\/2021\/11\/image-12.png 690w, \/wp-content\/uploads\/2021\/11\/image-12-210x300.png 210w\" alt=\"\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1424\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion.png\" alt=\"\" width=\"1281\" height=\"1671\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion.png 1281w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion-230x300.png 230w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion-785x1024.png 785w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion-768x1002.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion-1178x1536.png 1178w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Solucion-610x796.png 610w\" sizes=\"auto, (max-width: 1281px) 100vw, 1281px\" \/><\/figure>\n<h2>Equivalencia de Startup.cs con el fichero unificado Program.cs en .Net 6<\/h2>\n<p>Lo primero que apreciamos es la\u00a0<strong>simplicidad del nuevo fichero en .Net\u00a0<\/strong>6 donde se ha reducido considerablemente el n\u00famero de \u00ab<em>using<\/em>\u00bb que contiene (aunque esto tiene truco).<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-1896\" src=\"https:\/\/blog.santiagoporras.com\/wp-content\/uploads\/2021\/11\/image-13-1024x549.png\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"\/wp-content\/uploads\/2021\/11\/image-13-1024x549.png 1024w, \/wp-content\/uploads\/2021\/11\/image-13-300x161.png 300w, \/wp-content\/uploads\/2021\/11\/image-13-768x412.png 768w, \/wp-content\/uploads\/2021\/11\/image-13-1536x824.png 1536w, \/wp-content\/uploads\/2021\/11\/image-13-720x386.png 720w, \/wp-content\/uploads\/2021\/11\/image-13.png 1609w\" alt=\"\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1425\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Equivalencia-1.png\" alt=\"\" width=\"1197\" height=\"640\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Equivalencia-1.png 1197w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Equivalencia-1-300x160.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Equivalencia-1-1024x548.png 1024w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Equivalencia-1-768x411.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/Equivalencia-1-610x326.png 610w\" sizes=\"auto, (max-width: 1197px) 100vw, 1197px\" \/><\/figure>\n<p>En cuanto al c\u00f3digo existente, vemos que se parece bastante lo que existe en Startup.cs con lo que contiene el fichero unificado Program.cs.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-1897\" src=\"https:\/\/blog.santiagoporras.com\/wp-content\/uploads\/2021\/11\/image-14-1024x552.png\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"\/wp-content\/uploads\/2021\/11\/image-14-1024x552.png 1024w, \/wp-content\/uploads\/2021\/11\/image-14-300x162.png 300w, \/wp-content\/uploads\/2021\/11\/image-14-768x414.png 768w, \/wp-content\/uploads\/2021\/11\/image-14-1536x828.png 1536w, \/wp-content\/uploads\/2021\/11\/image-14-720x388.png 720w, \/wp-content\/uploads\/2021\/11\/image-14.png 1604w\" alt=\"\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1426\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-2.png\" alt=\"\" width=\"1203\" height=\"644\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-2.png 1203w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-2-300x161.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-2-1024x548.png 1024w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-2-768x411.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-2-610x327.png 610w\" sizes=\"auto, (max-width: 1203px) 100vw, 1203px\" \/><\/figure>\n<p>Podemos observar que <strong>el c\u00f3digo por defecto del antiguo fichero\u00a0<em>Program.cs<\/em><\/strong>, que b\u00e1sicamente instanciaba al Startup.cs,\u00a0<strong>tambi\u00e9n tiene su equivalencia en el unificado<\/strong>.<\/p>\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" class=\"wp-image-1898\" src=\"https:\/\/blog.santiagoporras.com\/wp-content\/uploads\/2021\/11\/image-15-1024x433.png\" sizes=\"(max-width: 1024px) 100vw, 1024px\" srcset=\"\/wp-content\/uploads\/2021\/11\/image-15-1024x433.png 1024w, \/wp-content\/uploads\/2021\/11\/image-15-300x127.png 300w, \/wp-content\/uploads\/2021\/11\/image-15-768x325.png 768w, \/wp-content\/uploads\/2021\/11\/image-15-1536x650.png 1536w, \/wp-content\/uploads\/2021\/11\/image-15-720x305.png 720w, \/wp-content\/uploads\/2021\/11\/image-15.png 1605w\" alt=\"\" \/><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-1427\" src=\"http:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-3.png\" alt=\"\" width=\"1200\" height=\"505\" srcset=\"https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-3.png 1200w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-3-300x126.png 300w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-3-1024x431.png 1024w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-3-768x323.png 768w, https:\/\/encaminablogs.wpenginepowered.com\/piensa-en-software-desarrolla-en-colores\/wp-content\/uploads\/sites\/21\/2021\/11\/equivalencia-3-610x257.png 610w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n<h2>V\u00eddeop\u00edldora<\/h2>\n<p><iframe loading=\"lazy\" title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/V6oyhN2XltA\" width=\"560\" height=\"315\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><\/p>\n<h2>Conclusi\u00f3n<\/h2>\n<p>Como hemos podido apreciar,\u00a0<strong>a partir de ahora trabajaremos con nuestro fichero Program.cs como \u00fanico punto de entrada por defecto de nuestras aplicaciones Web y Api con .Net 6<\/strong>\u00a0y no deber\u00eda cambiar mucho nuestra forma de trabajar para realizar tareas al inicio del ciclo de ejecuci\u00f3n de nuestras soluciones.<\/p>\n<p>Si a\u00fan no ten\u00e9is .Net 6 y quer\u00e9is descargarlo, pod\u00e9is hacerlo desde este enlace\u00a0<a href=\"https:\/\/dotnet.microsoft.com\/download\/dotnet\/6.0\">https:\/\/dotnet.microsoft.com\/download\/dotnet\/6.0<\/a><\/p>\n<p>Espero que este art\u00edculo os sea de ayuda para iniciar vuestro camino con .Net 6 y, si ten\u00e9is dudas, dejad comentarios y os responder\u00e9 lo antes posible.<\/p>\n<p>Enjoy coding.<\/p>\n<!-- AddThis Advanced Settings generic via filter on the_content --><!-- AddThis Share Buttons generic via filter on the_content --><span class=\"et_bloom_bottom_trigger\"><\/span>","protected":false},"excerpt":{"rendered":"<p>Para los desarrolladores de .Net, es habitual usar el archivo\u00a0Startup.cs, que viene por defecto en ciertas plantillas de proyecto (entre ellas las de proyectos de Web y de Api), para realizar determinadas tareas que deben ejecutarse al inicio. Pero, al &hellip; <a href=\"https:\/\/blogs.encamina.com\/piensa-en-software-desarrolla-en-colores\/horror-no-encuentro-el-fichero-startup-cs\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><!-- AddThis Advanced Settings generic via filter on get_the_excerpt --><!-- AddThis Share Buttons generic via filter on get_the_excerpt --><\/p>\n","protected":false},"author":22,"featured_media":1429,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[],"class_list":["post-1419","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-net"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v18.2.1 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>\u00a1Horror! 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