网站后台管理之数据列表绑定、删除和修改(17)

后台代码主要包括初始化数据事件、编辑事件、修改事件和取消事件： //初始化下拉框数据事件

protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) {

if (e.Row.RowIndex < 0) return;

BLL.ArticleType articleTypeBll = new BLL.ArticleType(); DataSet ds = new DataSet(); ds = articleTypeBll.GetList("");

HiddenField hd = (HiddenField)e.Row.FindControl("HiddenFieldId");//获取主键值 BLL.Article articleBll = new BLL.Article(); Model.Article articleModel = new Model.Article();

articleModel = articleBll.GetModel(Convert.ToInt32(hd.Value)); //行的状态是： 编辑状态 或者 （交替行且是编辑状态） if(e.Row.RowState == DataControlRowState.Edit ||

e.Row.RowState == (DataControlRowState.Alternate | DataControlRowState.Edit)) {

DropDownList ddlType = e.Row.FindControl("ddlType") as DropDownList; if (ddlType != null) {

ddlType.DataValueField = "articleTypeId"; ddlType.DataTextField = "articleTypeName"; ddlType.DataSource = ds; ddlType.DataBind();

ddlType.Items.FindByValue(articleModel.articleTypeId.ToString()).Selected = true; } } }

//编辑事件

protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) {

GridView1.EditIndex = e.NewEditIndex; BindGridView(); }

//修改事件

protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) {

GridViewRow myrow = GridView1.Rows[e.RowIndex];

HiddenField hd = (HiddenField)myrow.Cells[0].FindControl("HiddenFieldId");//获取主键值

TextBox txtTitle = (TextBox)myrow.Cells[2].FindControl("txtTitle");//获取标题

DropDownList ddlType = myrow.Cells[3].FindControl("ddlType") as DropDownList;//获取下拉框值