如何在asp.net标签文本中嵌入html标签？

Question

I am trying to create hyper link on condition of specific value of database field, it is for news page, and some news has content long and in this case I want to create hyper link but in case the length small no need for the link, the code that I used:

<asp:Label ID="lblContent" runat="server" 
                        Text='<%# string.Format("{0}",Eval("New_Content").ToString().Length>150? <a href> Eval("New_Content").ToString().PadRight(150).Substring(0,150).TrimEnd() + " ..." </a>:Eval("New_Content")) %>' >
                    </asp:Label>

but there is error, so can I have some help?

Answer 1

I am trying to create hyper link

Well why not use a <asp:HyperLink /> control then?

Also don't string use Substring() to reduce the length of the text and add the ... at the end, just use css.

eg

<asp:HyperLink ID="hlContent" runat="server" CssClass="trimme" 
                Text='<%# Eval("New_Content").ToString() %>'></asp:HyperLink>

Then add a css class called trimme

a.trimme{
  display: block;  
  width: 150px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

Take a look at this example

Answer 2

The code you had was almost correct, it just seems that you are missing some quotes:

<asp:Label ID="lblContent" runat="server" 
    Text='<%# String.Format("{0}", Eval("New_Content").ToString().Length > 150 ? "<a href='" + Eval("Link_Href") + Eval("New_Content").ToString().PadRight(150).Substring(0, 150).TrimEnd() + "'>...</a>" : Eval("New_Content")) %>' >
</asp:Label>

The text in an ASP Label is output raw to the response stream, so you can just write standard HTML, but it does need to be in quotes as you are building a new string object.

Answer 3

I got the solution using LastIndexOf() as:

<asp:Label ID="lblContent" runat="server" CssClass="nostyle" 
                        Text='<%# string.Format("{0}",Eval("New_Content").ToString().Length>150?string.Format("<a href=news.aspx?page=3#{0}>{1}</a>",Eval("New_Id"),string.Format("{0} {1}",Eval("New_Content").ToString().PadRight(150).Substring(0,Eval("New_Content").ToString().PadRight(150).Substring(0,150).LastIndexOf(" ")>-1 ? Eval("New_Content").ToString().PadRight(150).Substring(0,150).LastIndexOf(" "): 150).ToString(), " ...")):Eval("New_Content")) %>' >
                    </asp:Label>

Thank you all, you gave me good ideas