File extensions are necessary to open files with the right program. This article explains how to add a new file extension in the data base. # Open {{UBIK Studio}} and connect to database.<br/>In the {{Class_Browser}} switch to the ''[[Class_Browser#Content|Content view]]''.<br/>[[File:UI_HowTo_Add_a_file_extension_01.png|440px|border|alt=Add knows a file extension|Add a file extension]]<br/># Add a ''list of default [[HowTo:Create_a_new_Selective_ListFileTypes|SelectiveItem]]'' in Admin mode<br/>Now browse to {System.List} in the Class Browser and open the [[MetaClass]] '''SELECTIVEITEM''' in the {{Bulk_Editor}} (via Drag & Drop).<br/>[[File:UI_HowTo_Add_a_file_extension_02.png|220 px|border|alt=Add a file extension|Add a file extensiontypes]]<br/>[[File:UI_HowTo_Add_a_file_extension_03.png|660 px|border|alt=Add a file extension|Add a file extension]]<br/>Every row in the Bulk Editor is shown greyed and can´t be edited, because the MetaClass SELECTIVEITEM is a system MetaClassits extensions for documents. So we If you need to enable the ''[[UBIK_Studio_Basics#Admin_mode|Admin mode]]''.<br/>[[File:UI_HowTo_Add_a_file_extension_04.png|660 px|border|alt=Add a file an addtional extension|Add a file extension]]<br/>[[File:UI_HowTo_Add_a_file_extension_05.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>After enabling it can be added by extending the Admin mode you can add a new row for your file extension.<br/>[[File:UI_HowTo_Add_a_file_extension_06.pngSELECTIVELIST|880 px|border|alt=Add a file extension|Add a file extension]]# Add your new file extension to the selective system list<br/>Open the SELECTIVELIST MetaClass and connect the objects called FILETYPES with the {{Relation_Editor}} to add your new file extension via drag & drop.<br/>[[File:UI_HowTo_Add_a_file_extension_07.png|220 px|border|alt=Add a file extension|Add a file extension]]<br/>[[File:UI_HowTo_Add_a_file_extension_08.png|220 px|border|alt=Add a of file extension|Add a file extension]]<br/>[[File:UI_HowTo_Add_a_file_extension_09types.png|220 px|border|alt=Add The extensions also effects which application is used to open a file extension|Add a file extension]]<br/>{{Attention|Please do not forget document on the save buttonclients.}}
# Open {{UBIK Studio}}, connect to a database and switch to the ''[[Class_Browser#Content|Content view]]'' of the {{Class_Browser}}.<br/>[[File:UI_HowTo_Add_a_file_extension_01.png|440px|border|alt=Content view|Content view]]<br/>
# Browse to the [[MetaClass]] [[SELECTIVEITEM]] in the ''{System.List}'' namespace and connect it with the {{Bulk Editor}}.<br />[[File:UI_HowTo_Add_a_file_extension_02.png|220 px|border|alt=SELECTIVEITEM MetaClass|SELECTIVEITEM MetaClass]] [[File:UI_HowTo_Add_a_file_extension_03.png|660 px|border|alt=List of Selective Items|List of Selective Items]]
# As this MetaClass is a Built-in object you have to enable ''[[UBIK_Studio_Basics#Admin_mode|Admin mode]]'' to be able to add / modify entries
# Once the Admin mode is enabled you can add a new file extension by creating a new row and setting a description, name and value<br/>[[File:UI_HowTo_Add_a_file_extension_06.png|880 px|border|alt=Create a new Selective Item for a new file extension|Create a new Selective Item for a new file extension]]<!--
-->{{Attention|The value of the new item must include the extension in the format *.wmv!}}
# Now you have to relate the new item to the list of known file types: first, browse to the MetaClass [[SELECTIVELIST]] within the ''{System.List}'' namespace and connect the list named ''FILETYPE'' with the {{Relation Editor}}. Second, relate the new Selective Item to this list.<br />[[File:UI_HowTo_Add_a_file_extension_07.png|220 px|border|alt=Selective List for FILETYPES|Selective List for FILETYPES]] [[File:UI_HowTo_Add_a_file_extension_08.png|220 px|border|alt=Related FILETYPES|Related FILETYPES]] [[File:UI_HowTo_Add_a_file_extension_09.png|220 px|border|alt=Add a new file type|Add a new file type]]
# Save the changes with {{key press|Ctrl|S}} or the save command
# [[HowTo:Release_MetaDefinitions|Release the new MetaDefintiions]]
# Restart the [[HowTo:Configure_Microsoft_IIS_for_UBIK|web service]]
[[Category:Document|Add a new file extension]]
[[Category:How-To|Add a new file extension]]
[[Category:Document|Add a new file extension]]