我一直在寻找一种方法来使用我的转发器与多个变量,如创建日期,文件路径和父文件夹,我能够数据绑定到字符串列表,以便能够填充文件路径和我有一个方法可以将文本放入标签,但它只重复列表中的所有标签字段的第一项。有没有办法将多个变量传递给每个字段的转发器?
的.aspx
<asp:Repeater id="repLinks" runat="server" OnItemDataBound="Repeater1_ItemDataBound">
<ItemTemplate>
<tr>
<td>
<asp:HyperLink runat="server" NavigateUrl='<%# Container.DataItem.ToString() %>' Text="<%# Container.DataItem.ToString().Split('\\').Last() %>" />
</td>
<td>
<asp:Label ID="CRD" runat="server" Text="Label"></asp:Label>
</td>
<td>
<asp:Label ID="USR" runat="server" Text="Label"></asp:Label>
</td>
</tr>
</ItemTemplate>
</asp:Repeater>
.aspx.cs
public List<string> CD = new List<string>();
public List<string> lLinks = new List<string>();
public List<string> folder = new List<string>();
public string root = "";
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Welcomes User
string Uname = Environment.UserName;
UserName.Font.Size = 17;
UserName.Text = "Welcome: " + Uname;
Get_Vars();
//Define your list contents here
repLinks.DataSource = lLinks;
repLinks.DataBind();
}
}
protected void Get_Vars()
{
//gives path and constructs lists for directory paths and file links
root = "C:\\Users\\James\\Documents\\Visual Studio 2015\\WebSites";
//adds files to list
foreach (var path in Directory.GetDirectories(@root))
{
foreach (var path2 in Directory.GetFiles(path))
{
lLinks.Add(path2);
CD.Add(File.GetCreationTime(path2).ToString());
//CD.Add(File.GetCreationTime(path2).Date.ToString("yyyy-mm-dd"));
string[] temp = Path.GetDirectoryName(path2).Split(new string[] { "\\" }, StringSplitOptions.None);
folder.Add(temp[temp.Length-1]);
}
}
}
protected void Repeater1_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
foreach (RepeaterItem item in repLinks.Items)
{
if (item.ItemType == ListItemType.Item || item.ItemType == ListItemType.AlternatingItem)
{
for(int k=0;k<CD.Count;k++) {
var lbl = (Label)item.FindControl("CRD");
//int k = 0;
lbl.Text = CD[k];
}
}
if (item.ItemType == ListItemType.Item || item.ItemType == ListItemType.AlternatingItem)
{
var lbl = (Label)item.FindControl("USR");
int k = 0;
lbl.Text = folder[k];
k++;
}
}
}
答案 0 :(得分:1)
不要将相关值存储在不相关的变量中。创建一个对象,表示转发器中的任何给定元素。像这样:
public class MyObject
{
public string CD { get; set; }
public string Link { get; set; }
public string Folder { get; set; }
}
使用该对象的列表作为您的数据源:
public List<MyObject> MyObjects = new List<MyObject>();
并使用您的数据填充该列表:
foreach (var path2 in Directory.GetFiles(path))
{
string[] temp = Path.GetDirectoryName(path2).Split(new string[] { "\\" }, StringSplitOptions.None);
MyObjects.Add(new MyObject {
CD = File.GetCreationTime(path2).ToString(),
Link = path2,
Folder = temp[temp.Length-1]
});
}
绑定到列表:
repLinks.DataSource = MyObjects;
repLinks.DataBind();
在转发器中,您可以绑定到对象的属性:
<%# ((MyObject)Container.DataItem).CD %>
或
<%# ((MyObject)Container.DataItem).Link %>
等
每当您对数据元素进行逻辑分组时,请对它们进行分组。与试图保持一堆独立变量保持同步相比,它变得更容易维护。
答案 1 :(得分:1)
删除ItemDataBound
事件处理程序。您不需要将某些文本绑定到标签上。最好以声明的方式做到这一点。
您应该将数据封装在模型中。
public class CD
{
public string Name {get; set;}
public string Link {get; set;
public string Folder {get; set;}
//additional properties about the CD here
}
然后创建这些列表,并将其绑定到转发器。
List<CD> cds = new List<CD>();
//populate your list with data. Here's manually populating with one
CD cd = new CD
{
Name = "Dark Side of the Moon",
Link = "http://www.google.com/pinkfloyd",
Folder = "C:\\Users\\etc"
};
cds.Add(cd);
repLinks.DataSource = cds;
repLinks.DataBind();
最后,强烈输入您的转发器,然后您就可以访问这些属性了。
<asp:Repeater id="repLinks" runat="server" ItemType="CD" OnItemDataBound="Repeater1_ItemDataBound">
<!-- omit some stuff -->
<%#: Item.Name %>