Concatenate text with Eval

Question

How to concatenate static text in the start of Eval("") in asp.net?

score 64 · Answer 1 · answered Feb 24 '11 at 05:53

64

try...

Text='<%# "Mr " + Eval("FirstName") + " " + Eval("LastName")%>'

answered Feb 24 '11 at 05:53

Muhammad Akhtar

I got a string-to-double conversion error when I did this, but it worked after I changed the first '+' to '&'. – Resource Dec 04 '15 at 12:24
@user910683 I'm guessing you were using VB (not C#) in which yes, to more reliably concatenate values into a string, you should use `&` -- http://stackoverflow.com/questions/734600/the-difference-between-and-for-joining-strings-in-vb-net – Don Cheadle Feb 18 '16 at 18:23

score 20 · Answer 2 · answered Apr 27 '13 at 04:41

20

For concating two fields from db you can use string.Concat function in eval()

 Text='<%# string.Concat(Eval("FirstName"), " ", Eval("LastName"))%>'

answered Apr 27 '13 at 04:41

Tarun Gupta

score 2 · Answer 3 · answered Oct 20 '17 at 02:59

2

try this: Text='<%# string.Concat("Table No:", " ", Eval("table_no")) %>'

answered Oct 20 '17 at 02:59

Arpita Srivastava

score 0 · Answer 4 · edited Jun 18 '14 at 23:04

0

This works fine for me:

<%#Class.something.ToString() & Eval("something_to_eval")%>

edited Jun 18 '14 at 23:04

brasofilo

answered Jun 18 '14 at 22:17

fredyfx

score 0 · Answer 5 · answered Dec 28 '16 at 10:06

0

Doing this (without single quote) worked for me. And Visual Studio underlines it as a Validation warning.

 onclick=<%# "modCbClick('#tbl_" + Eval("ModCode") + "', this)" %>

answered Dec 28 '16 at 10:06

Kenz Mitnick

score 0 · Answer 6 · answered Sep 02 '20 at 00:56

Here is a good method I am using whereby I want to Concatenate a string to an Eval and use in the CommandArgument of a LinkButton.

Append string to start

CommandArgument='<%# String.Format(string.Concat("TextString", Eval("DBValue")))%>'

Append string to end

CommandArgument='<%# String.Format(string.Concat(Eval("DBValue"), "TextString"))%>'

6 Answers6