txt files, and then select the folder and click OK. In the Browse For Folder dialog box, browse to a folder that contains. The strings that are returned by the GetFiles method are then added to the ListBox. In this example, only files that have the extension. The GetFiles method accepts a search pattern argument to retrieve files that match a particular pattern. The GetFiles method then retrieves a collection of strings, one for each file in the directory. Private Sub ListFiles(ByVal folderPath As String)ĭim fileNames = My.(įolderPath,, "*.txt") After the user clicks OK, the SelectedPath property is sent as an argument to the ListFiles method, which is added in the next step.Īdd the following ListFiles method. The FolderBrowserDialog1.ShowDialog call opens the Browse For Folder dialog box. ListFiles(FolderBrowserDialog1.SelectedPath) If FolderBrowserDialog1.ShowDialog() = DialogResult.OK Then The Code Editor opens.Īdd the following code to the Click event handler. To select a folder, and list files in a folderĬreate a Click event handler for browseButton by double-clicking the control on the form. Visual Studio adds the project to Solution Explorer, and the Windows Forms Designer opens.Īdd the controls in the following table to the form, and set the corresponding values for their properties. In the Name box, type FileExplorer to set the project name, and then click OK. In the Templates pane in the middle, click Windows Forms Application. In the Installed Templates pane, expand Visual Basic, and then click Windows. For more information, see Personalizing the IDE. The Visual Studio edition that you have and the settings that you use determine these elements. Setting all elements of an Array to Null in C# (li.Your computer might show different names or locations for some of the Visual Studio user interface elements in the following instructions.Selecting Files to Open or Save in VB.NET.If you want to select a Directory instead of a file, look at this post. This setting will cause the dialog to prompt you when you try to save over an existing file.Īfter the ShowDialog call returns OK, use the FileName property to get the filename. I also show OverwritePrompt set to True (which is the default). Many of the properties work the same way as with the OpenFileDialog such as Filter, DefaultExt, and InitialDirectory. You use a SaveFileDialog object instead of a OpenFileDialog object. Saving a file is similar to opening a file. ' InitialDirectory can be omitted to use default, or used to specify an explicit directory In this example, it is not used and defaults to "Open File".Īfter the ShowDialog call returns OK, use the FileName property to get the selected filename. There is also a Title property that can be used to change the name of the Open File Dialog. You can set this property to an explicit path (like "c:\MyData") or you can use the special directories that are defined for you, like: The InitialDirectory property will let you define which directory to open up in. This property also will set the default file extension to use if you don't specify it in the filename (if typed in), so this property can also be used without the Filter property being set. Just specify the extension as a string (with no dot). If you are using Filter with more than one File Type specified, you can also use DefaultExt to specify which File Type to use as the default. If you leave the Filter property empty, then then Open File Dialog will just not have a drop down to select the File Type filter. If you have more than one File Type, you can add another pipe, then another Description|Filter Pattern, and so on. The value is set to a string that is a pipe (|) delimited list composed to a File Type Description and Filter Pattern. The Filter property lets you specify the which File Types will be selectable form the Open File Dialog (in a dropdown list). The OpenFileDialog object is used here, and I have only shown the most commonly used options. ' Do something with the selected filename If fileDlg.ShowDialog() = DialogResult.OK Then ' could be omitted to use default, or a specific dir can be givenįileDlg.InitialDirectory = Environment.GetFolderPath() Here is an example of each:įileDlg.Filter = "CSV File (*.csv)|*.csv|txt files (*.txt)|*.txt|All files (*.*)|*.*" VB.NET has come a long way from the clunky Common Dialog control of VB6 for implementing a standard dialog that will let you browse to find a file to Open or Save.
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