What is the difference between File.Open, File.OpenRead, and File.OpenWrite?

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ICSM Computer · Answer

In C#, File.Open, File.OpenRead, and File.OpenWrite are all methods used to open files, but they differ in access level, intent, and flexibility: File.Open(string path, FileMode mode) Most flexible: lets you specify file mode, access (read/write), and sharing.Requires a FileMode, and optionally FileAccess and FileShare. File.OpenRead(string path) Opens a file read-only.Returns a FileStream with FileAccess.Read. Equivalent to: File.OpenWrite(string path) Opens a file write-only.If the file exists, it overwrites from the beginning (but does not truncate).If the file doesn't exist, it is created. Equivalent to: Summary Table Method Access FileMode When to Use File.Open Read/Write Customizable Fine control over mode, access, share File.OpenRead Read-only Open Reading existing files File.OpenWrite Write-only OpenOrCreate Writing new or overwriting files

What is the difference between File.Open, File.OpenRead, and File.OpenWrite?

1 Answers

`File.Open(string path, FileMode mode)`

`File.OpenRead(string path)`

`File.OpenWrite(string path)`

Summary Table

Method	Access	FileMode	When to Use
`File.Open`	Read/Write	Customizable	Fine control over mode, access, share
`File.OpenRead`	Read-only	`Open`	Reading existing files
`File.OpenWrite`	Write-only	`OpenOrCreate`	Writing new or overwriting files

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What is the difference between File.Open, File.OpenRead, and File.OpenWrite?

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1 Answers

File.Open(string path, FileMode mode)

File.OpenRead(string path)

File.OpenWrite(string path)

Summary Table

`File.Open(string path, FileMode mode)`

`File.OpenRead(string path)`

`File.OpenWrite(string path)`