protected void grvbookcategorylist_RowCommand(object sender, GridViewCommandEventArgs e) { if (e.CommandName == "editcategory") { #region 编辑 Panel1.Visible = true; ViewState["operate"] = "edit"; Categories category = CategoriesManager.GetCategoriesById(Convert.ToInt32(e.CommandArgument)); txtbookcategory.Text = category.Name; #endregion } if (e.CommandName == "deletecategory") { #region 除 ViewState["CategoryId"] = e.CommandArgument; if (CategoriesManager.FindCategoryIsBook(Convert.ToInt32(ViewState["CategoryId"]))) { CategoriesManager.DeleteCategoryById(Convert.ToInt32(ViewState["CategoryId"])); } else { mydiv.Visible = true; } BindData(); #endregion } }