I don't know what it is about the syntax for the Filter property of the open file dialog, but it often Although you can drag an open file dialog from the toolbox, it's just as easy to create it on the fly: InitialDirectory = "C:\Images". This C# tutorial demonstrates the OpenFileDialog control in Windows Forms. You can specify a filter for your OpenFileDialog to indicate to the user which types of file they should be opening in your application, as well as limiting the files.


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The easiest way to set properties is from the Properties Window.

Filtering multiple types in open dialog (C#) - .NET - The SitePoint Forums

You can open Properties window by pressing F4 or right click on a control and select Properties menu item. The Properties window looks like Figure 3.

Figure 3 Initial and Restore Directories InitialDirectory property represents the directory to be displayed when the open file dialog appears first time.

For example, if you need users to restrict to image files only, we can set Filter property to load image files only.

openfiledialog c filter

Установка фильтра в OpenFileDialog, чтобы разрешить типичные форматы изображений?

CheckPathExists property indicates whether the dialog box displays openfiledialog c filter warning if the user specifies a path that does not exist. FileName; If MultiSelect property is set to true that means the open file dialog box allows multiple file selection.


Setting the initial directory The initial directory used by the OpenFileDialog is decided by Windows, but by using the InitialDirectory property, you can override it.

You will usually set this value to a user specified directory, the application directory or perhaps just to the directory last used.

Openfiledialog c filter can set openfiledialog c filter to a path in a string format, like this: NET framework openfiledialog c filter help you though, just use the Environment class and its members for dealing with special folders: MyDocuments ; In this case, I get the path for the My Documents folder, but have a look at the SpecialFolder enumeration - it contains values for a lot of interesting paths.

For a full list, please see this MSDN article. Multiple files If your application supports multiple open files, or you simply want to use the OpenFileDialog to select more than one file at a time, you need to enable the Multiselect property.


In the next example, we've done just that, and as a courtesy to you, dear reader, we've also applied all the techniques mentioned above, including filtering and setting the initial directory: MyDocuments ; if openFileDialog.

Once accepted, this example simply adds the filenames to the ListBox control, by looping through openfiledialog c filter FileNames property.

OpenFileDialog in C#

Please be aware that to reduce the amount of code lines, no exception handling is done in these examples. When working with files and doing IO tasks in general, you should always look out for exceptions, as they openfiledialog c filter easily occur due to a locked file, non-existing path or related problems.

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