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AspNetCore.Docs/aspnetcore/includes/GetTempFileName.md

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Warning: The following code uses GetTempFileName, which throws an IOException if more than 65535 files are created without deleting previous temporary files. A real app should either delete temporary files or use GetTempPath and GetRandomFileName to create temporary file names. The 65535 files limit is per server, so another app on the server can use up all 65535 files.