ASPxWebControl.IsCallback Property

Gets a value indicating whether the request is the result of a callback sent by the control.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v19.1.dll

Declaration

C#

public virtual bool IsCallback { get; }

VB.NET

Public Overridable ReadOnly Property IsCallback As Boolean

Property Value

Type	Description
Boolean	true if the request is the result of a callback sent by the control; otherwise, false.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the IsCallback 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#

how-to-display-underlying-records-e1873/CS/ASPxPivotGrid_DisplayUnderlyingRecords/Default.aspx.cs#L9

          rowIndexValue = RowIndex.Value;
if (ASPxGridView1.IsCallback &&
    !string.IsNullOrEmpty(columnIndexValue) && !string.IsNullOrEmpty(rowIndexValue))

how-to-filter-resources-in-the-aspxscheduler-control-using-the-aspxtreelist-component-t481290/CS/WebApplication1/Default.aspx.cs#L97

protected void ASPxScheduler1_FilterResource(object sender, PersistentObjectCancelEventArgs e) {
    if(!ASPxTreeList1.IsCallback) {
        List<int> resourcesFilter = new List<int>();

how-to-display-appointments-in-agenda-view-by-using-the-aspxgridview-component-t307060/CS/AgendaView/Default.aspx.cs#L99

{
    if (!ASPxCallbackPanel1.IsCallback) return;

VB.NET

how-to-display-underlying-records-e1873/VB/ASPxPivotGrid_DisplayUnderlyingRecords/Default.aspx.vb#L10

Dim columnIndexValue As String = ColumnIndex.Value, rowIndexValue As String = RowIndex.Value
If ASPxGridView1.IsCallback AndAlso (Not String.IsNullOrEmpty(columnIndexValue)) _
    AndAlso (Not String.IsNullOrEmpty(rowIndexValue)) Then

how-to-filter-resources-in-the-aspxscheduler-control-using-the-aspxtreelist-component-t481290/VB/WebApplication1/Default.aspx.vb#L100

Protected Sub ASPxScheduler1_FilterResource(ByVal sender As Object, ByVal e As PersistentObjectCancelEventArgs)
    If (Not ASPxTreeList1.IsCallback) Then
        Dim resourcesFilter As New List(Of Integer)()

how-to-display-appointments-in-agenda-view-by-using-the-aspxgridview-component-t307060/VB/AgendaView/Default.aspx.vb#L87

Protected Sub ASPxCallbackPanel1_Callback(ByVal sender As Object, ByVal e As DevExpress.Web.CallbackEventArgsBase)
    If Not ASPxCallbackPanel1.IsCallback Then
        Return