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In C#.NET, How to copy a file to another location, overwriting the existing file if the source file is newer than the existing file (have a later "Modified date"), and doing noting if the source file is older?
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By default, cp will overwrite files without asking. If the destination file name already exists, its data is destroyed. If you want to be prompted for confirmation before files are overwritten, use the -i (interactive) option.
If you are copying files using drag-drop or copy/paste, you may simply choose “Skip this file” or “Skip these files” option to not overwrite the files that are already existed at the destination folder. Or, if you are using command line copy, you can answer N to bypass these files that are already existed.
Usually, when you run a cp command, it overwrites the destination file(s) or directory as shown. To run cp in interactive mode so that it prompts you before overwriting an existing file or directory, use the -i flag as shown.
Overwriting a File, Part 1 To edit the settings for a file, locate the file you wish to overwrite and hover over the file name. Click the chevron button that appears to the right of the file name and select Overwrite File from the menu.
You can use the FileInfo class and it's properties and methods:
FileInfo file = new FileInfo(path); string destDir = @"C:\SomeDirectory"; FileInfo destFile = new FileInfo(Path.Combine(destDir, file.Name)); if (destFile.Exists) { if (file.LastWriteTime > destFile.LastWriteTime) { // now you can safely overwrite it file.CopyTo(destFile.FullName, true); } } If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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