我试图从列表中获取一些值,然后创建一个带有这个数据的html表,但是我无法使它正常工作.
我有：
HtmlTable table = new HtmlTable();
HtmlTableRow row;
HtmlTableCell cell;
foreach(var item in Name)
{
row = new HtmlTableRow();
foreach(var familyName in item.familyName)
{
cell = new HtmlTableCell();
cell.InnerText = item.familyName.ToString();
row.Cells.Add(cell);
}
foreach (var givenName in item.givenName)
{
cell = new HtmlTableCell();
cell.InnerText = item.givenName.ToString();
row.Cells.Add(cell);
}
table.Rows.Add(row);
}
this.Controls.Add(table);
当我浏览调试器时,我可以看到该行.Cells.Add(单元格)包含第一个循环中的系列名称,并在第二个循环中包含名称,但是似乎有些错误,我无法得到表格显示在页面上与此数据.
当我检查table.rows.add(row)时,它表示“base {System.SystemException} = {”’HtmlTableRow’不支持InnerText属性.“}”
我在这里做错了什么？
解决方法
我已经通过你的代码,我不能复制你提到的错误.
很难说,确实没有看到你的数据结构名称,但一些观察：
如果familyName是一个字符串,则内部foreach将对字符串中的每个字符执行一次.这可能不是你想要的,因为它会输出一个姓x的次数,其中x = surname.length.
这将导致每行不同数目的表格单元格,除非您的所有姓氏的长度相同.
所以我会说摆脱的
foreach(var familyName in item.familyName){...}
II.我猜,item.givenName是一个数组或集合,例如列表与LT;>的字符串？如果是这样,你可以使用
cell.InnerText = givenName;
请注意,这仍然会给您每行不平的数字表格单元格,因为人们有不同的名字数量;-)
说你真的应该使用内置的控件来做这种事情 – 中继器可能是要走的路.
例如.
<asp:Repeater runat="server" id="rptNames" onItemDataBound="rptName_ItemDataBound" >
<HeaderTemplate>
<table>
<tr>
<td>Given Name(s)</td>
<td>Family Name</td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><%# Eval("FamilyName") %></td>
<td>
<asp:Label runat="server" id="lGivenNames" />
</td>
</tr>
<ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
代码隐藏
可能由Page_Load触发 – 只需将您的中继器绑定到您的名称集合：
rptNames.DataSource = Name; rptNames.DataBind();
要输出GivenNames,您可以使用为中继器的每一行调用的ItemDataBound事件：
protected void rptNames_ItemDataBound(object sender,RepeaterItemEventArgs e){
//Not interested the Header and Footer rows
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem){
Label l = ((Label)e.Item.FindControl("lGivenNames"));
string[] arrGivenNames = ((FullName)e.Item.DataItem).GivenNames;
foreach (string n in arrGivenNames){//could use a StringBuilder for a performance boost.
l.Text += n + " "; //Use a regular space if using it for Winforms
}
//For even slicker code,replace the Label in your repeater with another repeater and bind to that. Google `nested repeater` for a how to.
}
}
HTH.
完整代码
<h2>Doing it by hand - manually building up an HTML Table</h2>
<asp:Panel runat="server" ID="pnl1">
</asp:Panel>
<h2>With a Repeater</h2>
<asp:Repeater runat="server" id="rptNames" onItemDataBound="rptName_ItemDataBound" >
<HeaderTemplate>
<table border="1" style="border-color:Red;">
<tr>
<td>Given Name(s)</td>
<td>Family Name</td>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td><%# Eval("FamilyName") %></td>
<td>
<asp:Label runat="server" id="lGivenNames" />
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
namespace Testbed.WebControls
{
internal class FullName{
public string FamilyName{get;set;}
public string[] GivenNames{get;set;}
public FullName(){
}
public FullName(string[] _givenNames,string _familyName)
{
FamilyName = _familyName;
GivenNames = _givenNames;
}
}
public partial class HTMLTables : System.Web.UI.Page
{
List<FullName> Name;
protected void Page_Load(object sender,EventArgs e)
{
this.Name = new List<FullName>();
Name.Add(new FullName(new string[]{"Kylie"},"Minogue"));
Name.Add(new FullName(new string[]{"Angelina","Kate","Very-Lovely"},"Jolie"));
Name.Add(new FullName(new string[]{"Audrey","Veronica"},"Hepburn"));
HtmlTable table = new HtmlTable();
table.Border = 1;
HtmlTableRow row;
HtmlTableCell cell;
row = new HtmlTableRow();
cell = new HtmlTableCell();
cell.InnerText = "Given Name";
row.Cells.Add(cell);
cell = new HtmlTableCell();
cell.InnerText = "Family Name";
row.Cells.Add(cell);
foreach (var item in Name)
{
row = new HtmlTableRow();
//foreach (var familyName in item.FamilyName){
cell = new HtmlTableCell();
cell.InnerText = item.FamilyName.ToString();
row.Cells.Add(cell);
//}
foreach (string givenName in item.GivenNames)
{
cell = new HtmlTableCell();
cell.InnerText = givenName.ToString();
row.Cells.Add(cell);
}
table.Rows.Add(row);
}
this.pnl1.Controls.Add(table);
//Or do it with a repeater
rptNames.DataSource = Name;
rptNames.DataBind();
}
//This gets called everytime a data object gets bound to a repeater row
protected void rptName_ItemDataBound(object sender,RepeaterItemEventArgs e){
switch(e.Item.ItemType){
case ListItemType.Item:
case ListItemType.AlternatingItem:
string[] arrGivenNames = ((FullName)e.Item.DataItem).GivenNames;
foreach(string n in arrGivenNames){
((Label)e.Item.FindControl("lGivenNames")).Text += n + @" ";
}
break;
default:
break;
}
}
}
}
