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{description}
{excerpt}Write\-protects the worksheet. A user will not be able to modify the worksheet in Excel without entering the specified password. This method does not encrypt the worksheet.{excerpt}
{signature:C#}
 public void Protect(System.String password)

{signature}{signature:vb.net

}
Public Sub Protect(ByVal password As String)

...

The password to use to protect the worksheet. If the password is "" or null, the worksheet will be protected without a password.

{signature}
{parameters}
{param:password}The password to use to protect the worksheet. If the password is "" or null, the worksheet will be protected without a password.{param}
{remarks}
To further protect your spreadsheet, you can protect the Workbook's structure using the [Workbook.Protect()|Workbook.Protect(String)] method or password encrypt the file using the [Workbook.EncryptPassword] property.
{remarks}
{example}{code:csharp|title=C#}
ws.Protect("MyPassword");

{code}
{code:vb.net

|title=vb.net

}
ws.Protect("MyPassword"){code}

{example}