WinForms Data Grid - Implement a pager using the Data Navigator

In this example:

1. Enable the GridControl.UseEmbeddedNavigator property to display the Data Navigator within the Grid control.
2. Use the GridControl.EmbeddedNavigator property and add two custom buttons (NextPage, PrevPage).
3. Specify the Tag property for each button to distinguish custom buttons in code.
4. Handle the GridControl.EmbeddedNavigator.ButtonClick event to increment/decrement the current page index, retrieve a new data source, and assign it to the GridControl.DataSource property.

C#
private void EmbeddedNavigator_ButtonClick(object sender, NavigatorButtonClickEventArgs e) {  
    if (e.Button.ButtonType != NavigatorButtonType.Custom) return;  
    e.Handled = true;  
    string tag = (string)e.Button.Tag;  
    switch(tag) {  
        case "NextPage":  
            this.CurrentPageIndex = Math.Min(this.CurrentPageIndex + 1, this.MaxPageIndex);  
            break;  
        case "PrevPage":  
            this.CurrentPageIndex = Math.Max(0, this.CurrentPageIndex - 1);  
            break;  
    }  
    this.GridControl.DataSource = GetData(this.CurrentPageIndex);  
}  

Code
Private Sub EmbeddedNavigator_ButtonClick(ByVal sender As Object, ByVal e As NavigatorButtonClickEventArgs)  
    If e.Button.ButtonType <> NavigatorButtonType.Custom Then  
        Return  
    End If  
    e.Handled = True  
    Dim tag As String = CStr(e.Button.Tag)  
    Select Case tag  
        Case "NextPage"  
            Me.CurrentPageIndex = Math.Min(Me.CurrentPageIndex + 1, Me.MaxPageIndex)  
        Case "PrevPage"  
            Me.CurrentPageIndex = Math.Max(0, Me.CurrentPageIndex - 1)  
    End Select  
    Me.GridControl.DataSource = GetData(Me.CurrentPageIndex)  
End Sub  

Documentation

• Data Navigator
• How to: Hide Specific Buttons in the Embedded Navigator

See Also

• How to implement pagination

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