Marshal Deeply Nested Struct Problem! - C# Discussion Boards

Stefan Troschuetz19-May-05 21:58

19-May-05 21:58

Instead of the SetCursor API mentioned by dnh, you can use the managed System.Windows.Forms.Cursor.Position property, which gets or sets the cursor's position in screen coordinates.

www.troschuetz.de

Vertically sizing RichEdit to match text

tbrewer19-May-05 12:03

tbrewer

19-May-05 12:03

I have a RichEditBox which I would like to automatically size vertically to match the length of text (no scroll bars) as the user types. How can I resize the RichEditBox this way in real time?

Thanks in advance.

Kelly Blue Book API?

DeepToot19-May-05 11:10

DeepToot

19-May-05 11:10

Hello. Anyone here know if Kelly Blue Book has an API that can be used in C#?

Doesnt actually have to be Kelly Blue Book but just anything that grabs vehicle pricing information from a query of make and model.

Thanks

Steve Welborn
Software Architect

Re: Kelly Blue Book API?

rudy.net19-May-05 18:26

rudy.net

19-May-05 18:26

Go to http://uddi.microsoft.com/default.aspx[^] and search Blue Book in "Services". I found one service; however, it is for blue book members only.

Re: Kelly Blue Book API?

DeepToot20-May-05 3:22

DeepToot

20-May-05 3:22

Excellent thank you very much for the info.

Steve Welborn
Software Architect

Active Direectory question

joe_coolish19-May-05 10:49

joe_coolish

19-May-05 10:49

Hi! i have a question about C# and Active Directory. I've been searching all over the place, and i have yet to find what i am looking for.

first, I need a list of the basic objectCategory categories. Mainly the NTID, Phone number, and e-mail address. If there is a method that exports a list of the categories in the selected schema, that would be even better.

second, I need to know how to set the AD properties for the logged on account, based on text input boxes.

Any help would be AMAZING! Also, if there are any really good books on programming for AD, i'd really like to know which one is worth the price.

Re: Active Direectory question

joe_coolish20-May-05 9:49

joe_coolish

20-May-05 9:49

anybody?

Marshal Deeply Nested Struct Problem!

jinzhecheng19-May-05 10:31

jinzhecheng

19-May-05 10:31

// the original c++ has those struct:

typedef struct
{
long id;
} StructA;

typedef struct
{
long price
StructA[4] idArray
}StructB

typedef struct
{
long date;
StructB priceArray

}StructC

// a function use those struct

void foo(StructC* quote)

//=============================================
// c# correspoding type
//=============================================
[StructLayout(LayoutKind.Sequential)]
struct StructA;
{
int id;
}

[StructLayout(LayoutKind.Sequential)]
struct StructB
{
long price
[MarshalAs(UnmanagedType.ByValArray,SizeConst=4 )]
StructA[] idArray
}

[StructLayout(LayoutKind.Sequential)]
struct StructC
{
long date;
StructB priceArray

}
// c# function
void foo(ref StructC quote)

It always complain StructB doesnt have layout info...
stuck for whole day
, really need help. Cry | :((

Re: Marshal Deeply Nested Struct Problem!

jinzhecheng19-May-05 11:04

jinzhecheng

19-May-05 11:04

Sorry, just saw some post ,
currently , struct array as a member of struct is not supported.

But use flat stuct , member like this: arr1, arr2.... sounds not a good idea, Who can give a good work around?

Re: Marshal Deeply Nested Struct Problem!

rudy.net19-May-05 18:50

rudy.net

19-May-05 18:50

Just to give you an idea, try changing the line in structB
From: [MarshalAs(UnmanagedType.ByValArray,SizeConst=4 )]
To: [MarshalAs(UnmanagedType.ByValArray, ArraySubType=UnmanagedType.LPStruct, SizeConst=4 )]
Basically you may need to specify the type of data that you have in the array. In this case I used LPStruct but you can try other types. I don't understand why we wouldn't be able to pass other structures after all, it's just a bunch of bytes that have to be marshaled into your managed structures.

Re: Marshal Deeply Nested Struct Problem!

leppie19-May-05 21:09

leppie

19-May-05 21:09

long in C/C++ is int (Int32) in C#.

Also the person who wrote the C code should be shot. You should be able to replace everything with the following:

struct Quote
{
  int date;
  int price;
  int id0;
  int id1;
  int id2;
  int id3;
}

void foo(ref Quote quote);

To check do a sizeof(StructC) in C and Marshal.SizeOf(typeof(Quote)) in C#. Both should be 24 bytes.

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Get Specific Line From RichTextBox

pessen19-May-05 9:22

pessen

19-May-05 9:22

I need to be able to get and parse a specific line from a richTextBox. I know you can get all the text from the box, or substrings if you know the start and end index, but I can not find a way to get just one line by using the line index. Does anyone know how to do this? I would appreciate any input you have. Thanks!

Re: Get Specific Line From RichTextBox

leppie19-May-05 10:02

leppie

19-May-05 10:02

The Lines property.

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Insert String array into an SQL DB

epfuller19-May-05 8:47

epfuller

19-May-05 8:47

I am looking to find out how to add text from a file to a database. I am using the Split() method, and adding the text to a string array. How would I go about adding this text into a DB....into different columns?

Re: Insert String array into an SQL DB

MoustafaS19-May-05 10:43

MoustafaS

19-May-05 10:43

May this help ? :

//first make a dataset from the database.<br />
//and then fill it usung the fill method of your adapter.<br />
//if you want to add it into a specific column in each row then:<br />
for(int i=0;i<myArray.Length;i++)<br />
{<br />
   DataRow r = mydataSet.Tables[0].NewRow();<br />
   r[Your index] = myArray[i];<br />
   meDataSet.Tables[0].Rows.Add(r);<br />
}

Re: Insert String array into an SQL DB

epfuller19-May-05 11:46

epfuller

19-May-05 11:46

Thanks for the reply! I am not sure what you are referencing on this line:
r[Your index]?

Re: Insert String array into an SQL DB

MoustafaS19-May-05 15:40

MoustafaS

19-May-05 15:40

The index of the column you are tring to put this value in ,or just it's name just like :

//r[Your index] :<br />
r[3] //as three refers to the 0-index of this column in the row<br />
//r[Your column name] :<br />
r["SplittedString"] //as SplittedString refers to the name of that column

Re: Insert String array into an SQL DB

epfuller20-May-05 2:34

epfuller

20-May-05 2:34

I see exactly what you are saying. Let me give you some more detail though. I have created an app that will inventory computer information. It will write this info to a data file using a ; as a delimiter. This is where I get my SplitString. In this text file, one line will represent one computer, so I want to try and add the infomation of that one line into a DB row with Columns that have already been specified.

I am very close to figuring this out, but any help would be appreciated!

VS.net 2003

Anonymous19-May-05 7:53

Anonymous

19-May-05 7:53

I just came from VB.NET to C# and in VB when ur in the programing window and you click the members box it displays all the events of a form or listbox ect.... it does not do this in C# though is there a way I can fix this?
thanks

Re: VS.net 2003

Judah Gabriel Himango19-May-05 8:24

Judah Gabriel Himango

19-May-05 8:24

You can view the events, members, properties, and methods of a class by clicking the drop down box on the top right hand corner of the code view.

Tech, life, family, faith: Give me a visit.
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Judah Himango

LCID in C#

ziczaczoom200419-May-05 7:43

ziczaczoom2004

19-May-05 7:43

Hi,
I've found the decimal code for the languages for a set of exe packages. All i need now is to from this code, i need to get the particular language. How am i to do this in C#?

Re: LCID in C#

Judah Gabriel Himango19-May-05 8:19

Judah Gabriel Himango

19-May-05 8:19

Decimal code? Exe packages? Confused | :confused:

Could you elaborate a bit?

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: The Secular Left, the Religious Right, and Prejudice
Judah Himango

Re: LCID in C#

ziczaczoom200419-May-05 9:23

ziczaczoom2004

19-May-05 9:23

yeah decimal code for eg if i supply 1033 means it should return English-UnitedStates similarly if i give any code sort of like that, it should return the language. how to do this ?
an elaborate way i did is by switch case. but i want a crisp way of doing this.

forget abt the exe packages.

Re: LCID in C#

Judah Gabriel Himango19-May-05 9:39

Judah Gabriel Himango

19-May-05 9:39

A Hashtable (or Dictionary<int, string=""> if you're using 2.0 beta) is the way to go; put all the possible number codes in the dictionary as keys, with their corresponding language strings as values.

hashtable.Add(1033, "English-US");

That way, when you go to retrieve a language name based off the code for that language, you can use:

string languageName = (string)hashtable[1033];

Tech, life, family, faith: Give me a visit.
I'm currently blogging about: The Secular Left, the Religious Right, and Prejudice
Judah Himango

Audio overlay in c#

russler19-May-05 7:17

russler

19-May-05 7:17

Guys.

I am a Java dev who is needing to jump into c# space for a while and I was wondering if someone could point me in the correct direction.

I am needing to write a small Pocket PC application which plays one track of music but will occasionally overlay another track ontop of it.

Can anyone out there point me to an example as I have not been able to find one.

Thanks for the help

Ant

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