OpenFileDialog in winforms windows forms C# .NET VB.NET windows application

In this example i m creating a Open file dialog box to browse and select a file to open in .NET windows applications using C# and winforms




Start a new Windows Application project and drag a button, double click on the button to generate it's click event

Now create a new openFileDialog

OpenFileDialog fDialog = new OpenFileDialog();

To set the title of window

fDialog.Title = "Open Image Files";

To apply filter, which only allows the files with the name or extension specified to be selected. in this example i m only using jpeg and GIF files

fDialog.Filter = "JPEG Files|*.jpeg|GIF Files|*.gif";

To set the Initial Directory property ,means which directory to show when the open file dialog windows opens

fDialog.InitialDirectory = @"C:\";

if the user has clicked the OK button after choosing a file,To display a MessageBox with the path of the file:

if(fDialog.ShowDialog() == DialogResult.OK)
{
MessageBox.Show(fDialog.FileName.ToString());
}

If you want to select multiple files ,set the Multiselect property to true and to return the name of the files use fDialog.FileNames instead of fDialog.FileName. This will return a string array with the name of the files.
Other properties which we can use are :

If a user types the name of a file but doesn't specify the extension you can set the AddExtension property to true:

fDialog.AddExtension = true;

if a user types the name of a file or path that does not exist we can give him an warning:

fDialog.CheckFileExists = true;
fDialog.CheckPathExists = true;

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