DataNavigator Class
The control that enables navigation through records in a data source and provides common record operations.
Namespace: DevExpress.XtraEditors
Assembly: DevExpress.XtraEditors.v22.1.dll
NuGet Package: DevExpress.Win.Navigation
Declaration
Remarks
The DataNavigator control is used to navigate through records in a data source and perform operations against the data. It is derived from the NavigatorBase class, and so it inherits properties and methods common to all data navigation controls.
The data navigator displays built-in buttons that enable a user to scroll forward or backward through records one at a time, go to the first record, go to the last record, insert a new record, post data changes, cancel data changes and delete a record. You can also add custom buttons, when required. To access built-in and custom buttons, use the DataNavigator.Buttons property. To perform custom actions on button clicks, handle the NavigatorBase.ButtonClick event.
The DataNavigator control needs to be associated with a data source in order to receive and manipulate data. Use the DataNavigator.DataSource and DataNavigator.DataMember properties for binding.
The DataNavigator can display a text string that specifies the current record and the total record count in the associated data source. Use the NavigatorBase.TextLocation and NavigatorBase.TextStringFormat to customize the display of this text.
Tooltips
DevExpress controls support regular and super tooltips. If the ShowToolTips option is enabled, tooltips are shown when the mouse pointer hovers over the control.
Use the following properties to specify a regular tooltip’s content:
- ToolTip — A regular tooltip’s text. If the text is not specified, the tooltip is not displayed even if the title is specified. You can use line breaks in regular tooltips. Use the AllowHtmlTextInToolTip property to specify whether to parse HTML tags in the text. HTML tags allow you to format the text: size, style, hyperlinks, etc.
- ToolTipTitle — A regular tooltip’s title. If the title is not specified, it is not displayed.
ToolTipIconType — A regular tooltip’s predefined icon. Use the controller’s IconSize property to specify the image size.
To display a custom image in all regular tooltips, use the controller’s ImageList and ImageIndex properties.
To display a custom image in a specific regular tooltip, handle the BeforeShow event. Use the ImageOptions event argument to assign a raster or vector image to the processed tooltip.
Use the SuperTip property to assign a super tooltip to a control. Enable the AllowHtmlText property to use HTML tags in the super tooltip.
To replace regular tooltips with super tooltips, set the ToolTipController.ToolTipType property to SuperTip. The controller automatically converts regular tooltips to super tooltips. To access this property, you can use the DefaultToolTipController component or a custom controller assigned to the ToolTipController property. See the following topic for more information: Hints and Tooltips.
Example
The following code shows how to create a new DataNavigator control, bind it to a data source and specify custom images for the control’s buttons at runtime. The custom images are stored in an ImageCollection object.
using DevExpress.XtraEditors;
private void CreateDataNavigator() {
// Create a new DataNavigator control
DataNavigator dataNavigator = new DataNavigator();
Controls.Add(dataNavigator);
dataNavigator.Height = 40;
dataNavigator.Dock = DockStyle.Bottom;
// Bind to a data source
dataNavigator.DataSource = productsBindingSource;
// Specify the ImageCollection that stores custom images for the DataNavigator's buttons
dataNavigator.Buttons.ImageList = imageCollection1;
for (int i = 0; i < dataNavigator.Buttons.ButtonCollection.Count; i++) {
dataNavigator.Buttons.ButtonCollection[i].ImageIndex = i;
}
dataNavigator.ShowToolTips = true;
}