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When using C # To call the COM component to operate on Excel, other programs are prohibited from performing operations on this file.

Source: Internet
Author: User
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In the process of calling the COM component in a WinForm program to operate an existing Excel file, if the process is long, for example, it takes 20 minutes, if you click the Excel file manually, the file can still be opened, but an error will be reported in the WinForm program. The current business requirement is that when you call the COM component to operate an Excel file, double-clicking the Excel file will prompt that the file is being used. If a process opens all the Excel files, no prompt is displayed and an error is reported. If multiple processes open an Excel file, the following prompt is displayed. This varies depending on the settings of the Excel program on your computer.

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