{"id":796,"date":"2017-03-28T20:00:00","date_gmt":"2017-03-29T03:00:00","guid":{"rendered":"https:\/\/ml2solutions.com\/?p=796"},"modified":"2021-05-02T17:08:51","modified_gmt":"2021-05-03T00:08:51","slug":"asp-net-validation-error-clicking-button-textbox","status":"publish","type":"post","link":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/","title":{"rendered":"ASP.NET Validation error clicking button textbox"},"content":{"rendered":"<p>I was showing someone the <a href=\"http:\/\/clearskytonight.com\/projects\/astronomycalculator\/astronomycalculator.html\">Astronomy Calculator<\/a> and we clicked the button without entering any text.&nbsp; The website gave this error message.<\/p>\n<p>&nbsp;<\/p>\n<p><em>An exception of type &#8216;System.InvalidCastException&#8217; occurred in Microsoft.VisualBasic.dll but was not handled in user code<\/em><\/p>\n<p><em>Additional information: Conversion from string &#8220;&#8221; to type &#8216;Integer&#8217; is not valid.<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>I did some research and the error is caused because a blank textbox actually has a string for a value and thus can\u2019t be converted to a Integer which is the value that is needed to be inputted.&nbsp; So, the error is correct.&nbsp; I thought the FieldValidator&nbsp; control were supposed to catch these issues.&nbsp; I did some testing and figured out the they would work except for when I added an OnClientClick value to track events in Google Analytics.&nbsp; Here is the current code.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&lt;asp:Button ID=&#8221;btnCalculate&#8221; OnClientClick=&#8221;_gaq.push([&#8216;_trackEvent&#8217;, &#8216;Button&#8217;, &#8216;Click&#8217;, &#8216;AngleDegrees&#8217;]);&#8221; runat=&#8221;server&#8221; Text=&#8221;Calculate&#8221; \/&gt;<\/em><\/p>\n<p>So, I did some more research and found the posting below.&nbsp; If I change the code to this, it works.<\/p>\n<p>&nbsp;<\/p>\n<p><em>&lt;asp:Button ID=&#8221;btnCalculate&#8221; OnClientClick=&#8221;return Page_ClientValidate(); _gaq.push([&#8216;_trackEvent&#8217;, &#8216;Button&#8217;, &#8216;Click&#8217;, &#8216;AngleDegrees&#8217;]);&#8221; runat=&#8221;server&#8221; Text=&#8221;Calculate&#8221; \/&gt;<\/em><\/p>\n<p>&nbsp;<\/p>\n<p>Resource<\/p>\n<p><a title=\"http:\/\/stackoverflow.com\/questions\/8918722\/onclientclick-code-preventing-validation-from-working\" href=\"http:\/\/stackoverflow.com\/questions\/8918722\/onclientclick-code-preventing-validation-from-working\">http:\/\/stackoverflow.com\/questions\/8918722\/onclientclick-code-preventing-validation-from-working<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An exception of type &#8216;System.InvalidCastException&#8217; occurred in [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>ASP.NET Validation error clicking button textbox - ML2 Solutions<\/title>\n<meta name=\"description\" content=\"ASP.NET Validation error clicking button textbox I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ASP.NET Validation error clicking button textbox - ML2 Solutions\" \/>\n<meta property=\"og:description\" content=\"ASP.NET Validation error clicking button textbox I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\" \/>\n<meta property=\"og:site_name\" content=\"ML2 Solutions\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/ml2solutions\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/ml2solutions\" \/>\n<meta property=\"article:published_time\" content=\"2017-03-29T03:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-05-03T00:08:51+00:00\" \/>\n<meta name=\"author\" content=\"Matt Woicik\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@ml2solutions\" \/>\n<meta name=\"twitter:site\" content=\"@ml2solutions\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Matt Woicik\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\"},\"author\":{\"name\":\"Matt Woicik\",\"@id\":\"https:\/\/ml2solutions.com\/#\/schema\/person\/19d4de8c6be3e95b8d97ac99910766bd\"},\"headline\":\"ASP.NET Validation error clicking button textbox\",\"datePublished\":\"2017-03-29T03:00:00+00:00\",\"dateModified\":\"2021-05-03T00:08:51+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\"},\"wordCount\":218,\"publisher\":{\"@id\":\"https:\/\/ml2solutions.com\/#organization\"},\"articleSection\":[\"Websites\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\",\"url\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\",\"name\":\"ASP.NET Validation error clicking button textbox - ML2 Solutions\",\"isPartOf\":{\"@id\":\"https:\/\/ml2solutions.com\/#website\"},\"datePublished\":\"2017-03-29T03:00:00+00:00\",\"dateModified\":\"2021-05-03T00:08:51+00:00\",\"description\":\"ASP.NET Validation error clicking button textbox I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An\",\"breadcrumb\":{\"@id\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ml2solutions.com\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Websites\",\"item\":\"https:\/\/ml2solutions.com\/category\/websites\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"ASP.NET Validation error clicking button textbox\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/ml2solutions.com\/#website\",\"url\":\"https:\/\/ml2solutions.com\/\",\"name\":\"ML2 Solutions\",\"description\":\"Helping you get more leads and make more sales\",\"publisher\":{\"@id\":\"https:\/\/ml2solutions.com\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/ml2solutions.com\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/ml2solutions.com\/#organization\",\"name\":\"ML2 Solutions\",\"url\":\"https:\/\/ml2solutions.com\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/ml2solutions.com\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/ml2solutions.com\/wp-content\/uploads\/2016\/04\/ML2logo.png\",\"contentUrl\":\"https:\/\/ml2solutions.com\/wp-content\/uploads\/2016\/04\/ML2logo.png\",\"width\":303,\"height\":54,\"caption\":\"ML2 Solutions\"},\"image\":{\"@id\":\"https:\/\/ml2solutions.com\/#\/schema\/logo\/image\/\"},\"sameAs\":[\"https:\/\/www.facebook.com\/ml2solutions\",\"https:\/\/x.com\/ml2solutions\",\"https:\/\/www.instagram.com\/ml2solutions\/\",\"https:\/\/www.pinterest.com\/ml2solutions\/\",\"https:\/\/www.youtube.com\/channel\/UCtOfam7a6aMf3Xtf6hBuJdA\"]},{\"@type\":\"Person\",\"@id\":\"https:\/\/ml2solutions.com\/#\/schema\/person\/19d4de8c6be3e95b8d97ac99910766bd\",\"name\":\"Matt Woicik\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/ml2solutions.com\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/92207c6315825666c3cc9632c4b40d7c?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/92207c6315825666c3cc9632c4b40d7c?s=96&d=mm&r=g\",\"caption\":\"Matt Woicik\"},\"description\":\"Matt is a digital marketing strategist and the owner of ML2 Solutions, a digital marketing agency. He helps businesses increase awareness and get more leads using digital marketing. New marketing methods are confusing, always changing and difficult to figure out. Matt helps to explain things and provide solutions with clear results.\",\"sameAs\":[\"https:\/\/ml2solutions.com\",\"https:\/\/www.facebook.com\/ml2solutions\",\"https:\/\/www.instagram.com\/ml2solutions\/\",\"https:\/\/www.linkedin.com\/company\/ml2solutions\/\",\"https:\/\/www.pinterest.com\/ml2solutions\/\",\"https:\/\/x.com\/ml2solutions\",\"https:\/\/www.youtube.com\/channel\/UCtOfam7a6aMf3Xtf6hBuJdA\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"ASP.NET Validation error clicking button textbox - ML2 Solutions","description":"ASP.NET Validation error clicking button textbox I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/","og_locale":"en_US","og_type":"article","og_title":"ASP.NET Validation error clicking button textbox - ML2 Solutions","og_description":"ASP.NET Validation error clicking button textbox I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An","og_url":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/","og_site_name":"ML2 Solutions","article_publisher":"https:\/\/www.facebook.com\/ml2solutions","article_author":"https:\/\/www.facebook.com\/ml2solutions","article_published_time":"2017-03-29T03:00:00+00:00","article_modified_time":"2021-05-03T00:08:51+00:00","author":"Matt Woicik","twitter_card":"summary_large_image","twitter_creator":"@ml2solutions","twitter_site":"@ml2solutions","twitter_misc":{"Written by":"Matt Woicik","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/#article","isPartOf":{"@id":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/"},"author":{"name":"Matt Woicik","@id":"https:\/\/ml2solutions.com\/#\/schema\/person\/19d4de8c6be3e95b8d97ac99910766bd"},"headline":"ASP.NET Validation error clicking button textbox","datePublished":"2017-03-29T03:00:00+00:00","dateModified":"2021-05-03T00:08:51+00:00","mainEntityOfPage":{"@id":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/"},"wordCount":218,"publisher":{"@id":"https:\/\/ml2solutions.com\/#organization"},"articleSection":["Websites"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/","url":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/","name":"ASP.NET Validation error clicking button textbox - ML2 Solutions","isPartOf":{"@id":"https:\/\/ml2solutions.com\/#website"},"datePublished":"2017-03-29T03:00:00+00:00","dateModified":"2021-05-03T00:08:51+00:00","description":"ASP.NET Validation error clicking button textbox I was showing someone the Astronomy Calculator and we clicked the button without entering any text.&nbsp; The website gave this error message. &nbsp; An","breadcrumb":{"@id":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/ml2solutions.com\/websites\/asp-net-validation-error-clicking-button-textbox\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/ml2solutions.com\/"},{"@type":"ListItem","position":2,"name":"Websites","item":"https:\/\/ml2solutions.com\/category\/websites\/"},{"@type":"ListItem","position":3,"name":"ASP.NET Validation error clicking button textbox"}]},{"@type":"WebSite","@id":"https:\/\/ml2solutions.com\/#website","url":"https:\/\/ml2solutions.com\/","name":"ML2 Solutions","description":"Helping you get more leads and make more sales","publisher":{"@id":"https:\/\/ml2solutions.com\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/ml2solutions.com\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/ml2solutions.com\/#organization","name":"ML2 Solutions","url":"https:\/\/ml2solutions.com\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ml2solutions.com\/#\/schema\/logo\/image\/","url":"https:\/\/ml2solutions.com\/wp-content\/uploads\/2016\/04\/ML2logo.png","contentUrl":"https:\/\/ml2solutions.com\/wp-content\/uploads\/2016\/04\/ML2logo.png","width":303,"height":54,"caption":"ML2 Solutions"},"image":{"@id":"https:\/\/ml2solutions.com\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/ml2solutions","https:\/\/x.com\/ml2solutions","https:\/\/www.instagram.com\/ml2solutions\/","https:\/\/www.pinterest.com\/ml2solutions\/","https:\/\/www.youtube.com\/channel\/UCtOfam7a6aMf3Xtf6hBuJdA"]},{"@type":"Person","@id":"https:\/\/ml2solutions.com\/#\/schema\/person\/19d4de8c6be3e95b8d97ac99910766bd","name":"Matt Woicik","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/ml2solutions.com\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/92207c6315825666c3cc9632c4b40d7c?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/92207c6315825666c3cc9632c4b40d7c?s=96&d=mm&r=g","caption":"Matt Woicik"},"description":"Matt is a digital marketing strategist and the owner of ML2 Solutions, a digital marketing agency. He helps businesses increase awareness and get more leads using digital marketing. New marketing methods are confusing, always changing and difficult to figure out. Matt helps to explain things and provide solutions with clear results.","sameAs":["https:\/\/ml2solutions.com","https:\/\/www.facebook.com\/ml2solutions","https:\/\/www.instagram.com\/ml2solutions\/","https:\/\/www.linkedin.com\/company\/ml2solutions\/","https:\/\/www.pinterest.com\/ml2solutions\/","https:\/\/x.com\/ml2solutions","https:\/\/www.youtube.com\/channel\/UCtOfam7a6aMf3Xtf6hBuJdA"]}]}},"_links":{"self":[{"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/posts\/796"}],"collection":[{"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/comments?post=796"}],"version-history":[{"count":0,"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/posts\/796\/revisions"}],"wp:attachment":[{"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/media?parent=796"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/categories?post=796"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ml2solutions.com\/wp-json\/wp\/v2\/tags?post=796"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}