XPBaseCollection.Count Property

Gets the number of elements contained in the XPBaseCollection instance.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.2.dll

Declaration

C#

[Browsable(false)]
public int Count { get; }

VB.NET

<Browsable(False)>
Public ReadOnly Property Count As Integer

Property Value

Type	Description
Int32	The number of elements contained in the collection

Remarks

If the XPBaseCollection.LoadingEnabled property is set to true the collection is populated with data when the collection’s contents is accessed for the first time. So if the collection has never been accessed so far, reading the Count property will firstly load the data from a data store and then return the number of objects loaded. Note that when an XPCollection is created using a constructor with the criteriaEvaluationBehavior parameter, it is loaded immediately.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the Count property.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

C#

CriteriaOperatorsCheatSheet/CS/CriteriaOperatorCheatSheet/Tests/FunctionOperators/StringOperators.cs#L23

xpColl.Filter = criterion;
var result3 = xpColl.Count;
//assert

winforms-scheduler-bind-xpo-multi-resource-appointments/CS/XPO_MultiResource_Example/Form1.cs#L49

private void InitResources() {
    if (xpCollectionResources.Count <= 0) {
        for (int i = 0; i < resourceNames.Length; i++) {

XPO_how-to-display-a-complex-propertys-subproperties-in-data-bound-controls-e742/CS/Form1.cs#L220

private void Form1_Load(object sender, System.EventArgs e) {
    if(xpCollection1.Count == 0) {
        Person person = new Person(session1);

XPO_how-to-filter-a-collection-by-an-associated-objects-properties-e886/CS/Form1.cs#L308

        labelControl1.Text = criteria.ToString();
    labelControl2.Text = string.Format("Total row count: {0}", xpCollection1.Count);
}

winforms-lookup-add-empty-item/CS/Form1.cs#L22

private void FillData() {
    if(xpc2.Count == 0) {
        Lookup lookup = new Lookup();

VB.NET

winforms-scheduler-bind-xpo-multi-resource-appointments/VB/XPO_MultiResource_Example/Form1.vb#L51

Private Sub InitResources()
    If xpCollectionResources.Count <= 0 Then
        For i As Integer = 0 To resourceNames.Length - 1

XPO_how-to-display-a-complex-propertys-subproperties-in-data-bound-controls-e742/VB/Form1.vb#L210

Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Load
    If xpCollection1.Count = 0 Then
        Dim person As New Person(session1)

XPO_how-to-filter-a-collection-by-an-associated-objects-properties-e886/VB/Form1.vb#L299

    End If
    labelControl2.Text = String.Format("Total row count: {0}", xpCollection1.Count)
End Sub

winforms-lookup-add-empty-item/VB/Form1.vb#L19

Private Sub FillData()
    If xpc2.Count = 0 Then
        Dim lookup As Lookup = New Lookup()

winforms-scheduler-bind-to-xpo/VB/XPO_XtraScheduler_Simple_Example/Form1.vb#L27

Private Sub InitData()
    If xpResourceCollection.Count = 0 Then
        Dim res1 As Resource = schedulerDataStorage1.CreateResource(1)