DataRepeater.CurrentItemIndexChanged Event

Occurs when the CurrentItemIndex changes.

Namespace:  Microsoft.VisualBasic.PowerPacks
Assembly:  Microsoft.VisualBasic.PowerPacks.Vs (in Microsoft.VisualBasic.PowerPacks.Vs.dll)

Syntax

'Declaration
Public Event CurrentItemIndexChanged As EventHandler

public event EventHandler CurrentItemIndexChanged

public:
 event EventHandler^ CurrentItemIndexChanged {
    void add (EventHandler^ value);
    void remove (EventHandler^ value);
}

member CurrentItemIndexChanged : IEvent<EventHandler,
    EventArgs>

JScript does not support events.

Remarks

The CurrentItemIndex changes when the user selects a new DataRepeaterItem or when the CurrentItemIndex is set in code.

Setting the CurrentItemIndex property scrolls the DataRepeaterItem that has the equivalent index into view.

For more information about how to handle events, see Consuming Events.

Examples

The following example demonstrates how to use the CurrentItem property to make changes when an item is selected. It assumes that you have a form that contains a bound DataRepeater named DataRepeater1, a bound TextBox named UnitsInStockTextBox, and a Label named LowStockWarningLabel.

Private Sub DataRepeater1_CurrentItemIndexChanged(
  ) Handles DataRepeater1.CurrentItemIndexChanged

    ' Exit if the control is first loading. 
    If DataRepeater1.CurrentItem Is Nothing Then Exit Sub 
    ' Check for zero or negative quantity. 
    If CDbl(
        DataRepeater1.CurrentItem.Controls("UnitsInStockTextBox").Text
       ) < 1 Then 
        ' Display a the warning label on the form. 
        Me.LowStockWarningLabel.Visible = True 
    Else 
        Me.LowStockWarningLabel.Visible = False 
    End If 
End Sub

private void dataRepeater1_CurrentItemIndexChanged(object sender, System.EventArgs e)
{
    // Exit if the control is first loading. 
    if (dataRepeater1.CurrentItem == null) { return; }
    // Check for zero quantity. 
    if (dataRepeater1.CurrentItem.Controls["unitsInStockTextBox"].Text == "0") 
    // Display a the warning label on the form.
    {
        this.lowStockWarningLabel.Visible = true;
    }
    else
    {
        this.lowStockWarningLabel.Visible = false;
    }
}

.NET Framework Security

• Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.

See Also

Reference

DataRepeater Class

Microsoft.VisualBasic.PowerPacks Namespace

CurrentItemIndex

Other Resources

Introduction to the DataRepeater Control (Visual Studio)