{"id":3130,"date":"2019-03-25T17:42:50","date_gmt":"2019-03-25T20:42:50","guid":{"rendered":"http:\/\/xexeu.elipse.com.br\/pt\/automation-in-code-generation-lesson-6-checking-for-preexisting-objects\/"},"modified":"2020-04-08T14:05:43","modified_gmt":"2020-04-08T17:05:43","slug":"automation-in-code-generation-lesson-6-checking-for-preexisting-objects","status":"publish","type":"post","link":"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-6-checking-for-preexisting-objects\/","title":{"rendered":"Automation in code generation: Lesson 6 &#8211; Checking for pre-existing objects."},"content":{"rendered":"<div align=\"justify\">\n<p>In scripts that create objects automatically, it is important to check whether such objects have already been created in the application, in order to avoid duplicated objects or even script errors.<\/p>\n<p>There is no specific method to check this directly; to do so, one possibility is to search the object via <b>Item <\/b>method.<\/p>\n<p><span style=\"font-family: Courier New;\">Set testObj = folder.Item(&#8220;DemoTag1&#8221;)<\/span><\/p>\n<p>There are two possible outcomes:<\/p>\n<ul>\n<li>If a script error appears on the row, it means the object does not exist.<\/li>\n<li>I no script errors appear, it means the object exists.<\/li>\n<\/ul>\n<p>Then, you will only need to handle errors in this script to be able to use this information and proceed with code development. Example:<\/p>\n<pre><span style=\"font-family: Courier New;\"><span style=\"color: #339966;\">'points to the desired location <\/span>\r\nset folder = Application.GetObject(\"Data\")<\/span>\r\n\r\non error resume next\r\n\r\n<span style=\"color: #339966;\">'looks for desired object<\/span>\r\nset testObj = folder.Item(\"DemoTag5\")\r\n\r\n<span style=\"color: #339966;\">'if a script error occurred <\/span>\r\nIf Err.Number <> 0 then\r\n\r\nMsgBox \"The object doesn't exist!\"\r\n\r\n<span style=\"color: #339966;\">'if no script errors occurred <\/span>\r\nElse\r\n\r\nMsgBox \"The object exists!\"\r\n\r\nEnd If\r\non error goto 0\r\n\r\n<\/pre>\n<p>Since this verification can repeat at several points in the script, you may want to create a specific <b>Function <\/b>for this, in order to keep the script tidier and more organized.<\/p>\n<p><b>Before proceeding to Lesson 7, we recommend reading the following articles:<\/b><\/p>\n<p><a href=\"http:\/\/kb.elipse.com.br\/pt-br\/questions\/4248\/Handling+script+errors.\" target=\"_blank\" rel=\"noopener noreferrer\">Handling script errors.<\/a><br \/>\n<a href=\"http:\/\/kb.elipse.com.br\/pt-br\/questions\/3994\/KB-30665%3A+Working+with+functions+in+E3+scripts.\" target=\"_blank\" rel=\"noopener noreferrer\">KB-30665: Working with functions in E3 scripts.<\/a><\/p>\n<\/div>\n<h3>Related articles<\/h3>\n<hr \/>\n<ul>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-introduction\/\">Automation in code generation: Introduction.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-1-working-with-vectors\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 1 \u2013 Working with vectors.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-2-reading-information-from-an-excel-file\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 2 \u2013 Reading information from an Excel file.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-3-changing-a-string-into-a-vector\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 3 \u2013 Changing a string into a vector.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-4-scanning-specific-objects-in-a-location\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 4 \u2013 Scanning specific objects in a location.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-5-adding-objects-via-scripts\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 5 \u2013 Adding objects via scripts.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-6-checking-for-preexisting-objects\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 6 \u2013 Checking for pre-existing objects.<\/a><\/li>\n<li><a href=\"https:\/\/kb.elipse.com.br\/en\/automation-in-code-generation-lesson-7-events-for-script-execution\/\" target=\"_blank\" rel=\"noopener noreferrer\">Automation in code generation: Lesson 7 \u2013 Events for script execution.<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In scripts that create objects automatically, it is important to check whether such objects have already been created in the application, in order to avoid duplicated objects or even script&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0},"categories":[763,825],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.8 - 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