C# .net temporary file name

Namespace: System. IO Assembly: System. Note In members that accept a path as an input string, that path must be well-formed or an exception is raised. In this article. A platform-specific separator character used to separate path strings in environment variables. ChangeExtension String, String. Combine String, String. Combine String, String, String. Combine String, String, String, String.

Combine String[]. EndsInDirectorySeparator String. Returns a value that indicates whether the specified path ends in a directory separator. Returns the directory information for the specified path represented by a character span.

GetDirectoryName String. Returns the extension of a file path that is represented by a read-only character span. GetExtension String. Returns the extension including the period ".

GetFileName String. Returns the file name of the specified path string without the extension. GetFullPath String. GetFullPath String, String. Returns an absolute path from a relative path and a fully qualified base path. Gets an array containing the characters that are not allowed in file names. Gets an array containing the characters that are not allowed in path names. Gets the root directory information from the path contained in the specified character span.

GetPathRoot String. Gets the root directory information from the path contained in the specified string. GetRelativePath String, String. HasExtension String. IsPathFullyQualified String. IsPathRooted String. Returns a value indicating whether the specified path string contains a root. Join String, String. Basically it returns cryptographically strong. This is another way to generate unique file name. Those who are not trust guid enough they implement combination of both guid and timestamp.

We know timestamp is nothing but combination of current time with hour ,minute ,second even millisecond. And if we concatenate this combination with GUID random string then I hope always it will throw a unique string even in strong multi threading environment. In below I have given sample code to implement this. The output screen is in below.

Those are the three different approach to generate file name in C. If you find another please write in comment. Comments or Responses. Login to post response. Generic; using System. The action attribute in this code specifies that the page will process the request.

By default, the method attribute of the form is set to post so that you can send large amounts of data in the transaction. You can add a text string in front of the control to prompt the user. This code is used to display the message to indicate whether the file upload is successful. To display this output, a Panel control is created that contains a single label.

The code in this section retrieves the file from the local file system, checks to see if the file already exists on the server, and then uploads the file to the Web site. To add this code, follow these steps:.

Double-click the Upload button that was created in the Add a Button control section of this article to create an event handler for the Click event of the button control. Add the following code to the Click event handler for the Upload button:. On the Debug menu, click Start to build and to run the application.

A text box and a command button appear. Type the path of the image file in the text box, or click Browse to locate the image file on your local computer. Click Upload to send the file to the server. If the file is unique, you receive a message that the upload succeeded. If the file already exists on the server, you receive an appropriate message.