protected void BtnDeleteAuthor_ServerClick(object sender, EventArgs e)
        {
            SourceAuthorEdit.Delete();
            GrdAuthors.DataBind();
            GrdBooks.DataBind();
            GrdLibraryIndex.DataBind();

            DrpAuthors.Items.Clear();
            DrpAuthors.DataBind();
            ScriptManager.RegisterStartupScript(BtnDeleteAuthor, GetType(), "DeleteAuthorModal",
                                                @"$('#DeleteAuthorModal').modal('hide');", true);
        }
        protected void BtnAddAuthor_Click(object sender, EventArgs e)
        {
            ReqValNonExistentAuthor.Validate();
            if (IsValid)
            {
                SourceAuthors.Insert();
                TbxFirstname.Text = "";
                TbxLastName.Text  = "";

                DrpAuthors.Items.Clear();
                DrpAuthors.DataBind();
                ScriptManager.RegisterStartupScript(BtnAddAuthorB, GetType(), "AddAuthorkModal",
                                                    @"$('#AddAuthorModal').modal('hide');", true);
                ScriptManager.RegisterStartupScript(BtnAddAuthorB, GetType(), "AdditionNotifModal",
                                                    @"$('#AdditionNotifModal').modal('toggle');", true);
            }
        }
        protected void FvBtnUpdateAuth_ServerClick(object sender, EventArgs e)
        {
            if (IsValid)
            {
                FvwAuthors.UpdateItem(true);
                GrdAuthors.DataBind();
                GrdBooks.DataBind();
                GrdLibraryIndex.DataBind();

                DrpAuthors.Items.Clear();
                DrpAuthors.DataBind();

                ScriptManager.RegisterStartupScript(FvBtnUpdateAuth, GetType(), "EditAuthorModal",
                                                    @"$('#EditAuthorModal').modal('hide');", true);
                ScriptManager.RegisterStartupScript(FvBtnUpdateAuth, GetType(), "UpdateNotifModal",
                                                    @"$('#UpdateNotifModal').modal('toggle');", true);
            }
        }