ASPxGridView.ExpandAll() Method

Expands all group rows.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v23.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public void ExpandAll()

VB.NET

Public Sub ExpandAll

Remarks

Call the server-side ExpandAll or CollapseAll() method to expand or collapse all group rows in the grid.

To expand or collapse a particular group row on the server side, call the ExpandRow or CollapseRow method.

For more information on grouping in the grid, refer to the following topic: ASPxGridView - Group Data.

ASPX

<dx:ASPxGridView ID="ASPxGridView1" runat="server" ClientInstanceName="grid"
    OnCustomCallback="ASPxGridView1_CustomCallback">
    <%--...--%>
    <Settings ShowGroupPanel="true" />
</dx:ASPxGridView>
<br />
<dx:ASPxButton ID="ASPxButton1" runat="server" Text="Expand All" AutoPostBack="false">
    <ClientSideEvents Click="ExpandRows" /> 
</dx:ASPxButton>
<dx:ASPxButton ID="ASPxButton2" runat="server" Text="Collapse All" AutoPostBack="false">
    <ClientSideEvents Click="CollapseRows" /> 
</dx:ASPxButton>

JS

function ExpandRows(s, e) {
    grid.PerformCallback("expand");
}

function CollapseRows(s, e) {
    grid.PerformCallback("collapse");
}

C#

protected void ASPxGridView1_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e) {
    if(e.Parameters == "expand") {
        ASPxGridView1.ExpandAll();
    } else if(e.Parameters == "collapse") {
        ASPxGridView1.CollapseAll();
    }
}

VB.NET

Protected Sub ASPxGridView1_CustomCallback(ByVal sender As Object, ByVal e As ASPxGridViewCustomCallbackEventArgs)
    If e.Parameters = "expand" Then
        ASPxGridView1.ExpandAll()
    ElseIf e.Parameters = "collapse" Then
        ASPxGridView1.CollapseAll()
    End If
End Sub