472,354 Members | 2,059 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 472,354 software developers and data experts.

Sorting a hashtable - strange error, please help!!

H ieveryone,

Can you help me please? I am trying to sort a hashtable but get the
error: "Cannot implicity convert type void to
System.Collections.ArrayList"

I am doing the following:
****BEGIN CODE****
public ArrayList SomeMethod()
{
Hashtable myHT = new HashTable();

ArrayList keys = GetKeys (HT);

return keys.sort();
}
//Return an arraylist of Hashtable keys
public ArrayList GetKeys(Hashtable table)
{
return (new ArrayList(table.Keys));
}
****END CODE****
However under the "keys.Sort()" method call I get the error: "Cannot
implicity convert type void to System.Collections.ArrayList"

I'm stuck. Would greatly appreciate any comments/suggestions/
corrections that you may be able to offer.

Thanking you,
Al.
Oct 16 '08 #1
2 1266
The Sort() method does not return anything - you need to break this up:

keys.Sort();
return keys;

Note that you might want to consider List<Tif you are using .NET 2.0
or above.

Marc
Oct 16 '08 #2
Marc Gravell wrote:
The Sort() method does not return anything - you need to break this
up:
keys.Sort();
return keys;

Note that you might want to consider List<Tif you are using .NET 2.0
or above.
List<Twould be used with Dictionary<T, TValuejust as ArrayList is used
with Hashtable.

Mixing and matching could get quite ugly very fast.
>
Marc

Oct 16 '08 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
by: Sergey Sedzyalo | last post by:
Hello All I have strange error in IE 5.5 - "The server thew an exeption" look code: self.opener.document.frm.categories.options=new Option("1", "1"); Plese help. Thanks.
6
by: WindAndWaves | last post by:
Hi Gurus The page below has a strange error. It seems to be working very well, just when you enter 8 or 9 for day, month or year then you get an error. I really have no idea where that is...
1
by: sofakingfree | last post by:
This error is driving me nuts. The code below will run perfectly when it has a breakpoint. But as soon as I remove the breakpoint and run it normally outside of debug mode I get a strange error...
3
by: Evangelista Sami | last post by:
hello i have this strange error message that i dont understand : _search.c: In function `_depth_search': _search.c:218: unable to find a register to spill in class `AREG' _search.c:218: this...
5
by: franz | last post by:
hello, it's hard to me explain you this kind of error i have from .net. i developed a script in asp.net with VS.NET. in VS.NET (code behind) it's work perfect. now i copied the code in an aspx...
4
by: ^MisterJingo^ | last post by:
I am getting the following error: Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error...
11
by: Martin Joergensen | last post by:
Hi, I've encountered a really, *really*, REALLY strange error :-) I have a for-loop and after 8 runs I get strange results...... I mean: A really strange result.... I'm calculating...
11
by: Mike C# | last post by:
Hi all, I keep getting a strange error and can't pin it down. The message is: This application has requested the Runtime to terminate it in an unusual way. Please contact the application's...
8
by: =?Utf-8?B?R2Vvcmdl?= | last post by:
Hello everyone, I am migrating my C++ COM server to managed code (C# COM server). I am using the same client to use the same COM class in COM server. The C++ version COM server works properly,...
0
by: Naresh1 | last post by:
What is WebLogic Admin Training? WebLogic Admin Training is a specialized program designed to equip individuals with the skills and knowledge required to effectively administer and manage Oracle...
0
jalbright99669
by: jalbright99669 | last post by:
Am having a bit of a time with URL Rewrite. I need to incorporate http to https redirect with a reverse proxy. I have the URL Rewrite rules made but the http to https rule only works for...
0
by: Matthew3360 | last post by:
Hi there. I have been struggling to find out how to use a variable as my location in my header redirect function. Here is my code. header("Location:".$urlback); Is this the right layout the...
0
by: Arjunsri | last post by:
I have a Redshift database that I need to use as an import data source. I have configured the DSN connection using the server, port, database, and credentials and received a successful connection...
0
hi
by: WisdomUfot | last post by:
It's an interesting question you've got about how Gmail hides the HTTP referrer when a link in an email is clicked. While I don't have the specific technical details, Gmail likely implements measures...
0
Oralloy
by: Oralloy | last post by:
Hello Folks, I am trying to hook up a CPU which I designed using SystemC to I/O pins on an FPGA. My problem (spelled failure) is with the synthesis of my design into a bitstream, not the C++...
0
by: Carina712 | last post by:
Setting background colors for Excel documents can help to improve the visual appeal of the document and make it easier to read and understand. Background colors can be used to highlight important...
0
BLUEPANDA
by: BLUEPANDA | last post by:
At BluePanda Dev, we're passionate about building high-quality software and sharing our knowledge with the community. That's why we've created a SaaS starter kit that's not only easy to use but also...
0
by: Rahul1995seven | last post by:
Introduction: In the realm of programming languages, Python has emerged as a powerhouse. With its simplicity, versatility, and robustness, Python has gained popularity among beginners and experts...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.