ASPxGridView.FocusedRowChanged Event

Fires after the focused row has been changed.

Namespace: DevExpress.Web

Assembly: DevExpress.Web.v21.2.dll

NuGet Package: DevExpress.Web

Declaration

C#

public event EventHandler FocusedRowChanged

VB.NET

Public Event FocusedRowChanged As EventHandler

Event Data

The FocusedRowChanged event's data class is EventArgs.

Remarks

The FocusedRowChanged event is raised when an end-user moves focus from one row to another or after the ASPxGridView.FocusedRowIndex property’s value has been changed in code.

If the ASPxGridViewBehaviorSettings.ProcessFocusedRowChangedOnServer property is set to false, the ASPxClientGridView.FocusedRowChanged event is handled on the client side without a callback to the server. Setting this property to true indicates that the final processing of the event should be performed on the server side, and so a round trip to the server is required. During such a round trip, the corresponding server-side FocusedRowChanged event is fired, which if handled, allows any desired server-side action to be performed.

Refer to the following section for more information: Focused Row.

Example

The example below demonstrates how to save a focused row index in cookies:

View Example

ASPX

<dx:ASPxGridView ID="gridView" runat="server" AutoGenerateColumns="False" DataSourceID="ads"
    KeyFieldName="CategoryID" ClientInstanceName="gridView" OnDataBound="gridView_DataBound" OnFocusedRowChanged="gridView_FocusedRowChanged">
    <SettingsBehavior AllowFocusedRow="true" ProcessFocusedRowChangedOnServer="true" />
    <Columns>
        <dx:GridViewDataTextColumn FieldName="CategoryID" ReadOnly="True" VisibleIndex="0">
            <EditFormSettings Visible="False" />
        </dx:GridViewDataTextColumn>
        <dx:GridViewDataTextColumn FieldName="CategoryName" VisibleIndex="1">
        </dx:GridViewDataTextColumn>
        <dx:GridViewDataTextColumn FieldName="Description" VisibleIndex="2">
        </dx:GridViewDataTextColumn>
    </Columns>
</dx:ASPxGridView>
<asp:AccessDataSource ID="ads" runat="server" DataFile="~/App_Data/nwind.mdb" SelectCommand="SELECT * FROM [Categories]"></asp:AccessDataSource>

C#

protected void gridView_FocusedRowChanged(object sender, EventArgs e) {
    ASPxGridView grid = sender as ASPxGridView;
    Response.Cookies[grid.ID]["FocudedIndex"] = grid.FocusedRowIndex.ToString();
    Response.Cookies[grid.ID].Expires = DateTime.Now.AddDays(1d);
}
protected void gridView_DataBound(object sender, EventArgs e) {
    ASPxGridView grid = sender as ASPxGridView;
    if(!IsPostBack)
    if (Request.Cookies[grid.ID] != null)
        grid.FocusedRowIndex =Convert.ToInt32(Request.Cookies[grid.ID]["FocudedIndex"]);
}

VB

Protected Sub gridView_FocusedRowChanged(ByVal sender As Object, ByVal e As EventArgs)
    Dim grid As ASPxGridView = TryCast(sender, ASPxGridView)
    Response.Cookies(grid.ID)("FocudedIndex") = grid.FocusedRowIndex.ToString()
    Response.Cookies(grid.ID).Expires = DateTime.Now.AddDays(1R)
End Sub
Protected Sub gridView_DataBound(ByVal sender As Object, ByVal e As EventArgs)
    Dim grid As ASPxGridView = TryCast(sender, ASPxGridView)
    If (Not IsPostBack) Then
    If Request.Cookies(grid.ID) IsNot Nothing Then
        grid.FocusedRowIndex =Convert.ToInt32(Request.Cookies(grid.ID)("FocudedIndex"))
    End If
    End If
End Sub