public partial class _Default : System.Web.UI.Page
{
    private bool mInserted = false;
 
    protected void Page_Load(object sender, EventArgs e) {
        mInserted = false;
    }
    protected void ASPxGridView1_CustomJSProperties(object sender, ASPxGridViewClientJSPropertiesEventArgs e) {
        e.Properties["cpIsInserted"] = mInserted.ToString();
    }

    <dxwgv:ASPxGridView ID="ASPxGridView1" runat="server" AutoGenerateColumns="False"
        DataSourceID="AccessDataSource1" KeyFieldName="CategoryID" 
        OnCustomJSProperties="ASPxGridView1_CustomJSProperties" 
        onrowinserted="ASPxGridView1_RowInserted">
        <ClientSideEvents EndCallback="function(s, e) {
    if (s.cpIsInserted == 'True') alert('Inserted!');
}" />

    protected void ASPxButton1_Click(object sender, EventArgs e)
    {
        object key = ASPxGridView1.GetRowValues(2, "CategoryID");
        ASPxGridView1.Selection.SelectRowByKey(key);
 
    }