asp.net Repeater 数据绑定的具体实现(图文详解)

664 查看

以下为设计步骤:

1、在C# 中连接数据库。如下图:
2、在项目中添加新建项,建立一个数据集,并把Categories从服务器资源列表中拖到这个数据集模板中并点击菜单“生成-生成解决方案”,如下图:

3、在aspx的webform上放一个ObjectDataSource控件,设定它的TypeName为刚刚建立的数据集类型,用它的向导建立即可。
4、在aspx的webform上放一个Repeater控件,用它的向导设定它的DataSourceID为上面的ObjectDataSource
5、在网页中设定它的源码,即加上<itemTemplate><AlternatingItemTemplate>等模板。如下面的代码:

复制代码 代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Repeater.Default" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" runat="server">
    <div>

        <asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
            OldValuesParameterFormatString="original_{0}" SelectMethod="GetData"
            TypeName="Repeater.DataSetEmployeesTableAdapters.CategoriesTableAdapter">
        </asp:ObjectDataSource>
        <asp:Repeater ID="Repeater1" runat="server" DataSourceID="ObjectDataSource1"
            onitemdatabound="Repeater1_ItemDataBound"
            onitemcreated="Repeater1_ItemCreated">
        <HeaderTemplate>
           类别表
           <table border="1"><th>类别ID</th><th>类别名称</th><th>描述</th><th>图片</th>
        </HeaderTemplate>
        <ItemTemplate>
           <tr>
             <td><%#Eval("CategoryID")%></td>
             <td>
                 <asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("CategoryName")%>'></asp:TextBox>
             </td>
             <td><%#Eval("Description")%></td>
             <td><img alt="None" src='<%#Eval("Picture")%>' /></td>
           </tr>

        </ItemTemplate>
        <AlternatingItemTemplate>
           <tr>
             <td style="background-color:Blue"><%#Eval("CategoryID")%></td>
             <td  style="background-color:Blue">
               <asp:TextBox ID="TextBox1" runat="server" Text='<%#Eval("CategoryName")%>'></asp:TextBox>
             </td>
             <td  style="background-color:Blue"><%#Eval("Description")%></td>
             <td  style="background-color:Blue"><img alt="None" src='<%#Eval("Picture")%>' /></td>
           </tr>
        </AlternatingItemTemplate>
        <FooterTemplate>
          </table>
        </FooterTemplate>
        </asp:Repeater>

    </div>
    </form>
</body>
</html>


7、要求在类别名称中带"O"的编辑框显示红色,则写出以下代码:
复制代码 代码如下:

protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.AlternatingItem)
            {

                TextBox tb = (TextBox)e.Item.FindControl("TextBox1");
                if (tb.Text.Contains("o"))
                {
                    tb.BackColor = Color.Red;
                }

            }
        }


7、运行显示的效果为: