母版页与DataList的使用

本文主要是介绍母版页与DataList的使用，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

MasterPage.master（母版页）

方法一：

Eval只用于模板列的绑定中 <a href='ClassGoods.aspx?id=<%#Eval("TypeID") %>'><%#Eval("TypeName")%></a>绑定的TypeID只是传值，真正在页面上显示出来的是<a></a>之间的TypeName

方法二：

通过触发GridView中OnRowCommand事件来传值，在页面中显示TypeName

在aspx.cs中

protected void linkGood(object sender, GridViewCommandEventArgs e)
    {
        if (e.CommandName == "link")
        {
            int TypeID = int.Parse(e.CommandArgument.ToString());
            Response.Redirect("ClassGoods.aspx?TypeID="+TypeID);
        }
    }

ClassGoods.aspx

<asp:DataList ID="DataList1" runat="server" RepeatColumns="4"
        RepeatDirection="Horizontal">
    <ItemTemplate>
    <div style="float:left">
     <img src='<%#Eval("GoodsPicture")%>' alt="" width="142px" height="108px"/><br />
     商品类型：<%#Eval("TypeName") %><br />
     商品名称：<%#Eval("GoodsName")%><br />
     商品价格：<%#Eval("GoodsPrice")%><br />
     </div>
    </ItemTemplate>
    </asp:DataList>

ClassGoods.aspx.cs

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            //显示所有商品
            showdatalist();
        }
    }
    /// <summary>
    /// 根据用户选择的商品类型显示商品
    /// </summary>
    protected void showdatalist()
    {
        int TypeID = 0;
        if (Request.QueryString["id"] != null)
        {
            TypeID = int.Parse(Request.QueryString["id"].ToString());
        }
     string cmdText = "select * from T_GoodsInfo,T_GoodsType where T_GoodsInfo.TypeID=T_GoodsType.TypeID";
        if (TypeID != 0)
        {
            cmdText += " and T_GoodsType.TypeID = " + TypeID;
        }
        SqlHelper helper = new SqlHelper();
        DataTable dt =helper.ExecuteReturnTable(cmdText, null, CommandType.Text);
        DataList1.DataSource = dt;
        DataList1.DataBind();
    }

Request.QueryString["id"] 中的id是<a href='ClassGoods.aspx?id=<%#Eval("TypeID") %>'><%#Eval("TypeName")%></a>中的id，即绑定的TypeID的值

AddGoods.aspx

商品类别：<asp:DropDownList ID="ddl_GoodsType" runat="server">
    </asp:DropDownList><br />
    商品名称：<asp:TextBox ID="txt_name" runat="server"></asp:TextBox><br />
    商品价格：<asp:TextBox ID="txt_price" runat="server"></asp:TextBox><br />
    图片路径：<asp:FileUpload ID="goodsImage" runat="server" /><asp:Label ID="Label1" runat="server"
        Text="Label" Visible="false"></asp:Label><br/>
    <asp:Button ID="bt_Add" runat="server" Text="添加" οnclick="Button1_Click" /><br />

AddGoods.aspx.cs

protected void Button1_Click(object sender, EventArgs e)
{

        string name = txt_name.Text.Trim();
        float price = float.Parse(txt_price.Text.Trim());
        int val = int.Parse(ddl_GoodsType.SelectedValue);

        //上传图片
        string str = Server.MapPath("image/");
        if (goodsImage.PostedFile.FileName == "")
        {
            Label1.Text = "要上传的文件名不能为空";
            return;
        }
        else
        {
            string filename = goodsImage.FileName;
            string fileEx = filename.Substring(filename.LastIndexOf(".")+1);
            string serverpath = Server.MapPath("image/")+filename;
            if (fileEx == "jpg" || fileEx == "bmp" || fileEx == "gif")
            {
                goodsImage.SaveAs(serverpath);
               Label1.Text = "上传成功";
            }
            else
            {
                Label1.Text = "请检查文件类型";
            }
       string cmdText = "insert into T_GoodsInfo(TypeID,GoodsName,GoodsPrice,GoodsPicture) values(@TypeID,@GoodsName,@GoodsPrice,@GoodsPicture)";
       SqlParameter[] para = { new SqlParameter("@TypeID", val),new SqlParameter("@GoodsName",name),
        new SqlParameter("@GoodsPrice",price),new SqlParameter("@GoodsPicture","image//"+filename)};
        int result=-1;
        SqlHelper helper = new SqlHelper();
        result = helper.ExecuteReturnInt(cmdText,para,CommandType.Text);
        if (result > 0)
        {
            Response.Write("<script>alert('添加成功');</script>");
        }
        else
        {
            Response.Write("<script>alert('添加失败');</script>");
        }
        }

    }