CheckFileExists property indicates whether the dialog box displays a warning if the user specifies a file name that does not exist. CheckPathExists property indicates whether the dialog box displays a warning if the user specifies a path that does not exist.
ReadOnlyChecked property represents whether the read-only checkbox is selected and ShowReadOnly property represents whether the read-only checkbox is available or not.
The Form looks like Figure 4. The Browse button click event handler will show an open file dialog and users will be able to select text files. The open file dialog looks like Figure 5.
The following code snippet is the code for Browse button click event handler. Once a text file is selected, the name of the text file is displayed in the TextBox. In this article, we discussed how to use a Windows Open File Dialog and set its properties in a Windows Forms application. Thank you. Microsoft makes no warranties, express or implied, with respect to the information provided here. Gets or sets the current file name filter string, which determines the choices that appear in the "Save as file type" or "Files of type" box in the dialog box.
The following code example uses the OpenFileDialog implementation of FileDialog and illustrates creating, setting of properties, and showing the dialog box. The example uses the Filter and FilterIndex properties to provide a list of filters for the user. The example requires a form with a Button placed on it and the System. Occurs when the user clicks on the Open or Save button on a file dialog box. Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode.
Please rate your experience Yes No. Any additional feedback? Namespace: System. Forms Assembly: System. In this article. Inherited from FileDialog. Gets a value indicating whether the component can raise an event.
Inherited from Component. Gets or sets the default file name extension. Gets or sets a string containing the file name selected in the file dialog box. Gets the file names of all selected files in the dialog box.
Gets or sets the index of the filter currently selected in the file dialog box. Gets or sets the initial directory displayed by the file dialog box. Gets the Win32 instance handle for the application. Gets or sets a value indicating whether the dialog box allows multiple files to be selected.
Gets or sets a value indicating whether the read-only check box is selected. Gets or sets a value indicating whether the dialog box contains a read-only check box. Gets or sets an object that contains data about the control. Inherited from CommonDialog. Gets or sets the file dialog box title. One of the answers seems to offer hope for filtering in ShowDialog by name. Now, here is a description of what I am trying to do:.
I think the answer is no, but I am just double-checking. If not, is there a workaround by subscribing to the OpenFileDialog event as indicated in the post I noted at the beginning of this post?
So it sounds like, I could use the OK event to prevent the user from selecting the first file a second time? I am hoping someone will answer this with an answer. Given it is not possible to filter by file name in OpenFileDialog , this is what I did to prevent the user from loading the same file twice:. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Ask Question.
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