# DATALINKUPDATE Command [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [D](Help%20System/GSTARCAD/2027/Commands/D/(D).md) ## Function Description: This command is used to update data to or from an established external data link. ## Command Access: > **Icon:** / > **Menu:** / > **Ribbon:** / > **Toolbar:** / > **Command:** DATALINKUPDATE > **Alias:** / ## Command Prompts: ``` Select an option [Update data link/Write data link] <Update data link>: ``` ## Update data link Updates the linked data in a table in your drawing with data that has been changed in the external source file. - **Select objects:** Updates selected tables containing data links with data that has been changed in the external source file. - **Data link:** Specifies the name of a data link to update with data that has been changed in the external source file. Entering [?] lists the data links in the current drawing. - **All data links:** Updates all data links in all tables in the drawing with data that has been changed in the external source file. ## Write data link Updates the linked data in an external file with data that has been changed in a table in your drawing. - **Select object:** Uploads data that has been changed from the original linked content to the source file. --- **Related References：** - [Commands about Tables (GstarCAD 2026)](../../../2026/Commands/00%20Command%20Groups/Commands%20about%20Tables.md) **Related Tasks：** - [To Link to a Table in an External Spreadsheet (GstarCAD 2026)](../../../2026/Commands/01%20Procedures/To%20Link%20to%20a%20Table%20in%20an%20External%20Spreadsheet.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_D/DATALINKUPDATE.html) · © Gstarsoft Co., Ltd.