ListItemCollection.GetEnumerator Method

Reference

Definition

Namespace:: System.Web.UI.WebControls

Assembly:: System.Web.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Returns a IEnumerator implemented object that contains all ListItem objects in the ListItemCollection.

public:
 virtual System::Collections::IEnumerator ^ GetEnumerator();

public System.Collections.IEnumerator GetEnumerator();

abstract member GetEnumerator : unit -> System.Collections.IEnumerator
override this.GetEnumerator : unit -> System.Collections.IEnumerator

Public Function GetEnumerator () As IEnumerator

Returns

IEnumerator

A IEnumerator implemented object that contains all ListItem objects in the ListItemCollection.

Implements

GetEnumerator()

Examples

void allItems_Click(Object sender,EventArgs e)
{
    IEnumerator dataListEnumerator;
    DataListItem currentItem;
    lblAllItems.Text = "";
    // Get an enumerator to traverse the DataListItemCollection.
    dataListEnumerator = myDataList.Items.GetEnumerator();
    while(dataListEnumerator.MoveNext())
    {
        currentItem = (DataListItem)dataListEnumerator.Current;
        // Display the current DataListItem onto the label.
        lblAllItems.Text += ((Label)(currentItem.Controls[1])).Text + " ";
    }
}

Sub AllItems_Click(sender As Object, e As EventArgs)
    Dim dataListEnumerator As IEnumerator
    Dim currentItem As DataListItem 
    lblAllItems.Text = ""
    ' Get an enumerator to traverse the DataListItemCollection.
    dataListEnumerator = myDataList.Items.GetEnumerator()
    while(dataListEnumerator.MoveNext())
        currentItem = CType(dataListEnumerator.Current,DataListItem)
        ' Display the current DataListItem onto the label.
        lblAllItems.Text = lblAllItems.Text & CType((currentItem.Controls(1)), _
        Label).Text & "  "
    End While
End Sub

Remarks

Use this method to create a System.Collections.IEnumerator that can be iterated through to get each ListItem object in the ListItemCollection.

Use the IEnumerator.Current property to get the item currently pointed to in the collection.

Use the IEnumerator.MoveNext method to move to the next item in the collection.

Use the IEnumerator.Reset method to move the enumerator back to the initial position.

Nota

After you create a System.Collections.IEnumerator object or use the IEnumerator.Reset method to move the enumerator to the first item in the collection, you must call the IEnumerator.MoveNext method. Otherwise, the item represented by the IEnumerator.Current property is undefined.

Applies to

Produto	Versións
.NET Framework	1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1

Compartir por