C# Discussion Boards - CodeProject

Re: Soapsuds and "Invalid schema data"

29-Oct-02 12:40

I have an object derived from MarshalByRefObject. Here's my problem:
If I have:

public class TheTransfer : System.MarshalByRefObject, IRemoting
{
public Form theForm;
//more blablabla
}
and run Soapsuds on the assembly it works fine. But if I use a class derived from Form, it won't. I get "Invalid schema data, Value cannot be null".

public class MyForm : Form
{
}
public class TheTransfer : System.MarshalByRefObject, IRemoting
{
public MyForm theForm;
}
Did anybody see this before?

Thanks

Senkwe Chanda31-Oct-02 2:00

Senkwe Chanda

31-Oct-02 2:00

Could be that MyForm isn't serializable. *shrug* What are you trying to do Smile | :)

ASP.NET can never fail as working with it is like fitting bras to supermodels - it's one pleasure after the next - David Wulff

Converting from Java to C# problem..

Ed K29-Oct-02 12:18

Ed K

29-Oct-02 12:18

I am converting a java app to C# and the passwords were encrypted with an algorithm written in java which uses the following to convert from a char to an int. Does anyone know the equivalent for C#?

<br />
int result = Character.getNumericValue('b'); // returns 11<br />

The 'equivalent' in C# returns different results...

<br />
double d12 = Char.GetNumericValue('b'); // returns -1.0????!!!!<br />

<br />
int i12 = Convert.ToInt32('b'); // returns 98<br />

What is the cause (other than java being a joke!) and how can I get the correct result?

Thanks,

ed

Every time I walk into a singles bar I can hear Mom's wise words: "Don't pick that up, you don't know where it's been!"

Christian Graus29-Oct-02 15:28

Christian Graus

29-Oct-02 15:28

I can't think of any reason, in any context, for 'b' to be '11'. I know capital A is 65 in ASCII, I'm not sure if lowercase b is ASCII 98. In any case, why don't you just subtract 87 ? Or is it not just for lowercase letters ?

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

During last 10 years, with invention of VB and similar programming environments, every ill-educated moron became able to develop software. - Alex E. - 12-Sept-2002

Ed K29-Oct-02 16:41

Ed K

29-Oct-02 16:41

I was about to do that then the meeting started so I fired off the question to see if anyone had run across it. I'm going to try that in the morning and walk the keyboard and see if everything fits. If not...do some sort of lookup.

Java!! Mad | :mad:

Thanks,

ed

Check out the stir on theserverside.com[^]!!

leppie31-Oct-02 6:09

31-Oct-02 6:09

Have you checked out MS's Java to C# convertor? Last time I checked it was still in early beta and didnt do such a good job (think it only supports Java 1.1), but it definately looked handy Smile | :)

"There are no stupid question's, just stupid people."

Creating DB's on the fly!!!

Stephane Rodriguez.29-Oct-02 19:16

Stephane Rodriguez.

29-Oct-02 19:16

You are just showing how little you know about Java. I don't know much either, but I can read the reference doc. Frown | :(

In short, Character.getNumericValue returns a code from an internal vm table known as the UAT (Unicode Attribute Table). As a result, this returns what you may call "weird" numbers.

To get the unicode from a char, you just need to cast it.

int unicodevalue = (int) 'b';

PS : Java being a joke?
Ha ha!!!! Laugh | :laugh:

How low can you go ?
(MS rant)

Anonymous29-Oct-02 9:43

29-Oct-02 9:43

Hi All,
Is it possible to create an Access DB "on the fly" using ADO? If not is there any other method?
Thanks,
J. Smile | :)

leppie29-Oct-02 10:19

29-Oct-02 10:19

Wrong forum! Post in SQL/ADO forum.

"There are no stupid question's, just stupid people."

perlmunger29-Oct-02 11:07

29-Oct-02 11:07

Here's an answer from google

-Matt

------------------------------------------

The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

Anonymous29-Oct-02 12:13

29-Oct-02 12:13

Thanks Guys

Anonymous30-Oct-02 11:23

30-Oct-02 11:23

I wanted to do just that without having to include an interop assembly. I just created a blank db in Access and added it as a resource to my project. Then whenever I wanted to create a new blank db I just created a new file and streamed out the binary resource data for the mdb. Probably wouldn't get your program a "Designed for" Windows sticker, but it works.

Pie / Bar / Line Charts

Anonymous29-Oct-02 9:40

Re: Pie / Bar / Line Charts

29-Oct-02 9:40

Hi all,
Does anyone have an idea how to create charts in C#?
Or of any tutorials on how to create them?
Thanks,
J.
Confused | :confused:

Christian Graus29-Oct-02 15:34

Christian Graus

29-Oct-02 15:34

Yes, I've done a series of articles on GDI+, they are in C++ but the methods are the same in C#.

Christian

No offense, but I don't really want to encourage the creation of another VB developer. - Larry Antram 22 Oct 2002

Hey, at least Logo had, at it's inception, a mechanical turtle. VB has always lacked even that... - Shog9 04-09-2002

During last 10 years, with invention of VB and similar programming environments, every ill-educated moron became able to develop software. - Alex E. - 12-Sept-2002

Determing SQL Server Type from C#

perlmunger29-Oct-02 9:28

29-Oct-02 9:28

Does anyone know how I can find out the SQL Server type of a db column from within C#. I know that when I obtain data in a DataTable, each of the DataColumn objects contain information about the column including the column name and the data type, however, the type that it provides is a System.* C# type. Is there any way to determine the SQL Server type name (e.g. int, smallint, etc.) programmatically?

TIA

-Matt

------------------------------------------

The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

leppie29-Oct-02 10:23

29-Oct-02 10:23

Hi
I presume you have a DataSet to transfer the data? Well, just look in there Smile | :)

"There are no stupid question's, just stupid people."

perlmunger29-Oct-02 10:54

29-Oct-02 10:54

I've been looking in there through the debugger as well as in the DataTable and DataColumn and I don't see anything that would tell me the type or the length of the individual columns. Do you know of something more specific?

-Matt

------------------------------------------

The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

leppie29-Oct-02 11:05

29-Oct-02 11:05

Your dataset contains the mapping from SQL types to .NET types, if you dont have a dataset (which I doubt), just get one of the data adapters auto generate u one. Then double click that file (the .xsd file) and it will show the equivalent SQL types. For the length of each type (of each parameter), that too get auto generated if you are using stored procedures.

Hope this helps Smile | :)

"There are no stupid question's, just stupid people."

perlmunger29-Oct-02 11:11

29-Oct-02 11:11

You say that "Your dataset contains the mapping from SQL types to .NET types...". I do have a DataSet, I just don't know where this mapping is that you are referring to. What member of the DataSet contains this information? You understand that I want to obtain this info programmatically, right?

Thanks again.

-Matt

------------------------------------------

The 3 great virtues of a programmer:
Laziness, Impatience, and Hubris.
--Larry Wall

leppie29-Oct-02 11:39