我在 SQL Server 中有 2 个表。一张表列出了所有 super 英雄,另一张表列出了能力。目前在运行时子转发器获取表中的所有项目,而它应该只获取与父表相关的项目。在我的 aspx 页面上,我有一个嵌套的转发器,如下所示:
<asp:Repeater id="rptHero" runat="server" DataSourceID="sdsHeros" OnItemDataBound="rptHero_ItemDataBound">
<ItemTemplate>
<table>
<tr>
<td> <%# Eval("HeroName")%> </td>
<asp:Repeater id="rptAbility" runat="server" >
<ItemTemplate>
<tr>
<td> <%# Eval("AbilityName")%> </td>
</tr>
</ItemTemplate>
</asp:Repeater>
</tr>
</table>
<p> </p>
</ItemTemplate>
</asp:Repeater>
<asp:SqlDataSource ID="sdsHero" runat="server" ConnectionString="<%$ ConnectionStrings:SiteSqlServer2 %>"
SelectCommand="SELECT [num], [HeroName] FROM [Super_Heros]"></asp:SqlDataSource>
<asp:SqlDataSource ID="sdsAbility" runat="server" ConnectionString="<%$ ConnectionStrings:SiteSqlServer2 %>"
SelectCommand="SELECT [num], [AbilityName] FROM [Super_Ability]"></asp:SqlDataSource>
在我后面的代码中有:
protected void rptHero_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
DataRowView row = (DataRowView)e.Item.DataItem;
Repeater nestedRepeater = e.Item.FindControl("rptAbility") as Repeater;
nestedRepeater.DataSource = sdsAbility;
nestedRepeater.DataBind();
}
}
正在关注 Example 1和 Example 2由我们的优秀赞助人在 Stack Overflow 上发布,这应该有效,但是,我认为我跳过了 [num]
的部分父转发器的与 [HeroID]
进行比较在 SQLJoin 中的子转发器。
最佳答案
这是我的结局
<asp:Repeater id="repMenu1" runat="server" OnItemDataBound="repMenu1_ItemDataBound">
<ItemTemplate>
<table id="gradient-style">
<tr>
<th> <%#DataBinder.Eval(Container.DataItem, "Hero")%> </th>
</tr>
<asp:Repeater id="repMenu2" runat="server">
<ItemTemplate>
<tr>
<td> <a href="ScoreGraphs.aspx?id=<%#DataBinder.Eval(Container.DataItem, "num")%>"> <%#DataBinder.Eval(Container.DataItem, "Abilities")%></a> </td>
</tr>
</ItemTemplate>
</asp:Repeater>
</table>
</ItemTemplate>
</asp:Repeater>
在后面的代码中
protected void Page_Load(object sender, EventArgs e)
{
GetSQLData();
}
//my custom function to get data and create relationship between 2 tables and
//bind the data on page load so that when menu1 is databound, it will find the matching submenu
//items in the database and bind them to the second (nested) repeater,
//displaying the sub-menu items below the parent
protected void GetSQLData()
{
using (SqlConnection conn1 = new SqlConnection(ConfigurationManager.ConnectionStrings["SiteSqlServer2"].ConnectionString))
{
conn1.Open();
SqlDataAdapter cmd = new SqlDataAdapter(@"SELECT * FROM [Abilities]; SELECT * FROM [Heros]", conn1);
DataSet ds = new DataSet();
cmd.Fill(ds);
ds.Relations.Add(new DataRelation("nestThem", ds.Tables[0].Columns["num"], ds.Tables[1].Columns["AbilityID"]));
repMenu1.DataSource = ds;
repMenu1.DataBind();
}
}
//Binding the data
protected void repMenu1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
DataRowView dv = e.Item.DataItem as DataRowView;
if (dv != null)
{
Repeater repSubMenu = e.Item.FindControl("repMenu2") as Repeater;
if (repSubMenu != null)
{
repSubMenu.DataSource = dv.CreateChildView("nestThem");
repSubMenu.DataBind();
}
}
}
我发现这个解决方案既简单又干净。
关于c# - 如何根据父级的当前 ID 将我的嵌套中继器绑定(bind)到其父级?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/26848651/