GridView的一个入门问题求解答

[百变猪娃娃]

protected void Grid_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow) //数据行
{

DataRowView info = e.Row.DataItem as DataRowView;



通过调试得知 e.Row.DataItem 有数据，为何转换为 DataRowView后，info 为null呢？不明白，求解答。

[sciinfojs123]

在RowDataBound事件中.. if (e.Row.RowType == DataControlRowType.DataRow) //判断是否数据行; { 　　DataRowView drv = (DataRowView)e.Row.DataItem; 　　string haveimg = drv["Hd_HaveImage"].ToString(); 　　string uid = drv["Hd_Id"].ToString(); } 可以直接读取数据库中未绑定到列的字段. 或者可以用 if (e.Row.RowType == DataControlRowType.DataRow) //判断是否数据行; { 　　string haveimg = DataBinder.Eval(e.Row.DataItem , "Hd_HaveImage").ToString(); }

[moonwrite]

DataItem as DataRowView 如果DataRowView不是DataItem 的子类 是不可以转的 我现在很少用控件了，都mvc了 你可以搜索一下GridView 72般绝技

[xiaozai_1965067409]

GridView绑定数据显示商品详细信息 //GridView设置显示数据功能 <asp:GridView ID="gvGoodsInfo" runat="server" CellPadding="4" ForeColor="#333333" GridLines="None" Font-Size="9pt" AutoGenerateColumns="False" AllowPaging="True" PageSize="8" OnPageIndexChanging="gvGoodsInfo_PageIndexChanging" Width="450px"> <FooterStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> <RowStyle BackColor="#F7F6F3" ForeColor="#333333" /> <EditRowStyle BackColor="#999999" /> <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /> <PagerStyle BackColor="#CBCF7A" ForeColor="Black" HorizontalAlign="Right" /> <HeaderStyle BackColor="#CBCF7A" Font-Bold="True" ForeColor="White" /> <AlternatingRowStyle BackColor="White" ForeColor="#284775" /> <Columns> <asp:BoundField DataField="PicId" HeaderText="商品ID" /> <asp:BoundField DataField="PicType" HeaderText="所属类别" /> <asp:BoundField DataField="GoodsStock" HeaderText="库存量" /> <asp:BoundField DataField="PicName" HeaderText="商品名称" /> <asp:HyperLinkField HeaderText="详细信息" Text="详细信息" DataNavigateUrlFields="PicId" DataNavigateUrlFormatString="EditGInfo.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/MemberManage/EditGInfo.aspx" > <ControlStyle Font-Underline="False" ForeColor="Black" /> <ItemStyle Font-Underline="False" ForeColor="Black" /> <HeaderStyle Font-Underline="False" ForeColor="Black" /> </asp:HyperLinkField> </Columns> </asp:GridView>//codego.net/tags/11/1/ //cs页面绑定GridView控件加载数据 SqlConnection sqlcon = new SqlConnection(ConfigurationManager.AppSettings["ConnectionString"]); protected void Page_Load(object sender, EventArgs e) { string sqlstr = "select * from tbPicture"; //创建执行查询操作的SQL语句 sqlcon.Open();//打开数据库连接 SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon);//创建数据阅读器 DataSet myds = new DataSet(); //创建数据集 myda.Fill(myds); //填充数据集 gvGoodsInfo.DataSource = myds; //设定数据源 gvGoodsInfo.DataBind(); //绑定数据 sqlcon.Close(); //关闭数据库连接 }