The following code example creates an OpenFileDialog, sets several properties to define the file extension filter and dialog behavior, and displays the dialog box using the …

C# OpenFileDialog control is used to browse and select a file on a computer. In this article, you'll learn how to use the OpenFileDialog in C#.

In this article we'll focus on the OpenFileDialog class, which makes it very easy to display a dialog for opening one or several files. Simple OpenFileDialog example

Jan 16, 2026 · OpenFileDialog is part of the System.Windows.Forms namespace (or Microsoft.Win32 for WPF) and is explicitly designed to select files, not folders. By default, it enforces file validation (e.g., …

Feb 18, 2023 · OpenFileDialog This allows users to browse folders and select files. It can be used with C# code. It displays the standard Windows dialog box. The results of the selection made in …

The OpenFileDialog control prompts the user to open a file and allows the user to select a file to open. The user can check if the file exists and then open it. The OpenFileDialog control class inherits from …

You can access the file specified by the user in the OpenFileDialog—and then read it in using the System.IO namespace methods. We also handle exceptions, preventing some errors related to file …

The Windows Forms xref:System.Windows.Forms.OpenFileDialog component is a pre-configured dialog box. It is the same Open File dialog box exposed by the Windows operating system.

In WinForms and WPF, OpenFileDialog is used to select a file, not a folder. To select a folder, you should use FolderBrowserDialog in WinForms or CommonOpenFileDialog with IsFolderPicker …

May 7, 2025 · Learn how to use the OpenFileDialog component to open the Windows dialog box for browsing and selecting files.