grid.PerformCallback

    <ClientSideEvents Tick="function(s, e) {
        grid.PerformCallback();
    }" />

function PerformCallback(
   args : String
);
// Deleting selected rows.
protected void ASPxGridView1_CustomCallback(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewCustomCallbackEventArgs e) {
    // Obtains the key values of selected rows.
    List<object> keyValues = ASPxGridView1.GetSelectedFieldValues("ID");
    StringBuilder sb = new StringBuilder(keyValues[0].ToString());
    foreach (object key in keyValues) {
        AccessDataSource1.DeleteParameters["ID"] = new Parameter("ID", TypeCode.Int32, key.ToString());
        AccessDataSource1.Delete();
    }
    // Refreshes the grid.
    ASPxGridView1.DataBind();
}

protected void ASPxGridView1_CustomCallback(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewCustomCallbackEventArgs e) {
    ASPxGridView1.DataBind();
}