{"id":26884,"date":"2022-12-20T14:53:00","date_gmt":"2022-12-20T09:23:00","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-set-values-of-text-box-using-values-of-other-text-boxes-closed\/"},"modified":"2022-12-20T14:53:00","modified_gmt":"2022-12-20T09:23:00","slug":"solved-how-to-set-values-of-text-box-using-values-of-other-text-boxes-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-set-values-of-text-box-using-values-of-other-text-boxes-closed\/","title":{"rendered":"[Solved] How to set values of text box using values of other text boxes [closed]"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-24675352\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"24675352\" data-parentid=\"24666196\" data-score=\"0\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>I think what you want is <code>Control.Leave<\/code> event or <code>Control.KeyPress<\/code> or you may also use <code>Control.TextChanged<\/code> as suggested by @LevZ&#8230;<\/p>\n<p><strong>Here is some code for <code>Control.Leave<\/code> Event:<\/strong><\/p>\n<pre><code>TextBoxFirstNumber.Leave += TextBoxFirstNumber_Leave;\nTextBoxSecondNumber.Leave += TextBoxSecondNumber_Leave;\n\nvoid TextBoxFirstNumber_Leave(object sender, EventArgs e)\n{\n    if (TextBoxFirstNumber.Text != \"\" &amp;&amp; TextBoxSecondNumber.Text != \"\")\n    {\n        TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text);\n    }\n}\n\nvoid TextBoxSecondNumber_Leave(object sender, KeyPressEventArgs e)\n{\n    if (TextBoxFirstNumber.Text != \"\" &amp;&amp; TextBoxSecondNumber.Text != \"\")\n    {\n        TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text);\n    }\n}\n<\/code><\/pre>\n<p>This will fill the <code>TextBoxAnswer<\/code> when the user puts his values in both of the TextBoxes and leaves it&#8230; <\/p>\n<p><strong>Here is some code for <code>Control.KeyPress<\/code> Event:<\/strong><\/p>\n<pre><code>TextBoxFirstNumber.KeyPress += TextBoxFirstNumber_KeyPress;\nTextBoxSecondNumber.KeyPress += TextBoxSecondNumber_KeyPress;\n\nvoid TextBoxFirstNumber_KeyPress(object sender, EventArgs e)\n{\n    if (e.KeyChar == (char)Keys.Enter)\n    {\n        if (TextBoxFirstNumber.Text != \"\" &amp;&amp; TextBoxSecondNumber.Text != \"\")\n        {\n            TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text);\n        }\n    }\n}\n\nvoid TextBoxSecondNumber_KeyPress(object sender, KeyPressEventArgs e)\n{   \n    if (e.KeyChar == (char)Keys.Enter)\n    {\n        if (TextBoxFirstNumber.Text != \"\" &amp;&amp; TextBoxSecondNumber.Text != \"\")\n        {\n            TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text);\n        }\n    }\n}\n<\/code><\/pre>\n<p>Now the user enters numbers in both TextBoxes and presses enter on any of them <code>TextBoxAnswer<\/code> will show product&#8230;<\/p>\n<p><strong>Here is some code for <code>Control.TextChanged<\/code> Event:<\/strong><\/p>\n<pre><code>TextBoxFirstNumber.TextChanged += TextBoxFirstNumber_TextChanged;\nTextBoxSecondNumber.TextChanged += TextBoxSecondNumber_TextChanged;\n\nvoid TextBoxFirstNumber_TextChanged(object sender, EventArgs e)\n{\n    if (TextBoxFirstNumber.Text != \"\" &amp;&amp; TextBoxSecondNumber.Text != \"\")\n    {\n        TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text);\n    }\n}\n\nvoid TextBoxSecondNumber_TextChanged(object sender, KeyPressEventArgs e)\n{\n    if (TextBoxFirstNumber.Text != \"\" &amp;&amp; TextBoxSecondNumber.Text != \"\")\n    {\n        TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text);\n    }\n}\n<\/code><\/pre>\n<p>Now as the user will enter the numbers for event it will trigger <code>TextChanged<\/code> event and <code>TextBoxAnswer<\/code> will show output. <\/p>\n<p>You may also read <a rel=\"nofollow noopener\" target=\"_blank\" href=\"http:\/\/msdn.microsoft.com\/en-us\/library\/system.windows.forms.control_events%28v=vs.110%29.aspx\">this Official Documentation<\/a> for Control Events and use the ones that suits your needs the most.<\/p>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\">0<\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How to set values of text box using values of other text boxes [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] I think what you want is Control.Leave event or Control.KeyPress or you may also use Control.TextChanged as suggested by @LevZ&#8230; Here is some code for Control.Leave Event: TextBoxFirstNumber.Leave += TextBoxFirstNumber_Leave; TextBoxSecondNumber.Leave += TextBoxSecondNumber_Leave; void TextBoxFirstNumber_Leave(object sender, EventArgs e) { if (TextBoxFirstNumber.Text != &#8220;&#8221; &amp;&amp; TextBoxSecondNumber.Text != &#8220;&#8221;) { TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text); } &#8230; <a title=\"[Solved] How to set values of text box using values of other text boxes [closed]\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-set-values-of-text-box-using-values-of-other-text-boxes-closed\/\" aria-label=\"More on [Solved] How to set values of text box using values of other text boxes [closed]\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[959],"class_list":["post-26884","post","type-post","status-publish","format-standard","hentry","category-solved","tag-winforms"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>[Solved] How to set values of text box using values of other text boxes [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-set-values-of-text-box-using-values-of-other-text-boxes-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to set values of text box using values of other text boxes [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] I think what you want is Control.Leave event or Control.KeyPress or you may also use Control.TextChanged as suggested by @LevZ&#8230; Here is some code for Control.Leave Event: TextBoxFirstNumber.Leave += TextBoxFirstNumber_Leave; TextBoxSecondNumber.Leave += TextBoxSecondNumber_Leave; void TextBoxFirstNumber_Leave(object sender, EventArgs e) { if (TextBoxFirstNumber.Text != &quot;&quot; &amp;&amp; TextBoxSecondNumber.Text != &quot;&quot;) { TextBoxAnswer.Text = int.Parse(TextBoxFirstNumber.Text) * int.Parse(TextBoxSecondNumber.Text); } ... 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