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DataRepeaterItemValueEventArgs.ItemIndex Property

Gets the index of the DataRepeaterItem that contains the control that is raising the ItemValueNeeded or ItemValuePushed event.

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

Syntax

'Declaration
Public ReadOnly Property ItemIndex As Integer
'Usage
Dim instance As DataRepeaterItemValueEventArgs 
Dim value As Integer 

value = instance.ItemIndex
public int ItemIndex { get; }
public:
property int ItemIndex {
    int get ();
}
public function get ItemIndex () : int

Property Value

Type: System.Int32
The index of the DataRepeaterItem.

Remarks

In virtual mode, use the ItemValueNeeded event to populate the child controls of the ItemTemplate with values from your data store when a DataRepeaterItem is displayed or when a new item is added.

Use the ItemValuePushed event to save changes to the child control values to your data store.

When the VirtualMode property is set to False, these events are not raised.

Examples

The following example demonstrates how to handle the ItemValueNeeded event. It assumes that you have a DataRepeater control named DataRepeater1 that has its VirtualMode property set to True. The code will resemble the following example, which is for a data source named Employees.

Private Sub DataRepeater1_ItemValueNeeded(ByVal sender As Object, _
 ByVal e As  _
 Microsoft.VisualBasic.PowerPacks.DataRepeaterItemValueEventArgs) _
 Handles DataRepeater1.ItemValueNeeded
    If e.ItemIndex < Employees.Count Then 
        Select Case e.Control.Name
            Case "txtFirstName"
                e.Value = Employees.Item(e.ItemIndex + 1).firstName
            Case "txtLastName"
                e.Value = Employees.Item(e.ItemIndex + 1).lastName
        End Select 
    End If 
End Sub
private void dataRepeater1_ItemValueNeeded(object sender, Microsoft.VisualBasic.PowerPacks.DataRepeaterItemValueEventArgs e)
{
    if (e.ItemIndex < Employees.Count)
    {
        switch (e.Control.Name)
        {
            case "txtFirstName":
                e.Value = Employees[e.ItemIndex + 1].firstName;
                break;
            case "txtLastName":
                e.Value = Employees[e.ItemIndex + 1].lastName;
                break;
        }
    }
}

.NET Framework Security

See Also

Reference

DataRepeaterItemValueEventArgs Class

DataRepeaterItemValueEventArgs Members

Microsoft.VisualBasic.PowerPacks Namespace

ItemValuePushed

ItemValueNeeded

Other Resources

Introduction to the DataRepeater Control (Visual Studio)

Virtual Mode in the DataRepeater Control (Visual Studio)