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How can I design my own OpenFileDialog?

Khoa Bui11-Jun-05 17:26

Khoa Bui

11-Jun-05 17:26

I also think about this. But when you do it, you can only do a little work, for example change 200 files to a larger number and remove unneccessary funtionalities, and what remain is VS.NET's work.
How do I get start?

Re: How can I design my own OpenFileDialog?

Dave Kreskowiak12-Jun-05 4:06

Dave Kreskowiak

12-Jun-05 4:06

No, you can't do that. You must write your own OpenFileDialog from scratch.

You can't change the existing dialog because the problem is NOT within the .NET Framework OpenFileDialog class code. The problem lies within the underlying Windows control, which you cannot change, that the .NET Framework OpenFileDialog class wraps.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

drag a picturebox

Anonymous9-Jun-05 1:34

Anonymous

9-Jun-05 1:34

i've the last nodes of a treeview that rappresent a bitmap image.
I need by dragging one of these node to show a preview (50% smaller and semi-transparent) of the bitmap of referring that follow my cursor (just as a drag effect)
How can i realize this effect?

SelectedPath() not working in FolderBrowserDialog

Anonymous9-Jun-05 1:27

Anonymous

9-Jun-05 1:27

I have the following code:

//Create an FolderBrowserDialog
FolderBrowserDialog folderDlg = new FolderBrowserDialog();
folderDlg.RootFolder = Environment.SpecialFolder.MyComputer;
folderDlg.ShowNewFolderButton = false;
folderDlg.Description = "Select the folder"; 
folderDlg.SelectedPath = strPath;//which is defined earlier and is checked to be a valid path
			
DialogResult result = folderDlg.ShowDialog();
if( result == DialogResult.OK )
{
   //some code here
}

However, when the FolderBrowserDialog is shown, the initial folder is not set even though SelectedPath property is used as above. Similar experience is noticed by me in some other code on similar occasions as well. In fact, in this situation, there is some other abnormality as the OK button is shown enabled for My Computer folder also which is not so when this property is not set. On the other hand, if I set the SelectedPath property as something like @"C:\Program Files\", then it is correctly shown.

What can be the reason? Am I missing something?

Re: SelectedPath() not working in FolderBrowserDialog

Robert Rohde12-Jun-05 4:19

Robert Rohde

12-Jun-05 4:19

I think the FolderBrowserDialog class has a bug with paths with more than 256 chars. Might this be the cause?

question in using matlab dll in c#

hediii9-Jun-05 1:22

hediii

9-Jun-05 1:22

Hi every body , from a few days i have a problem that i can't solve , how i can pass a STRING variable by using a matlab program dll .
The document 1,2,3 ways offer just a double variable
Plz i need it ,
thx

clean viruse in c#

computer_eng9-Jun-05 1:13

computer_eng

9-Jun-05 1:13

hi..
please ...please i neeeeeeed help about how the fixed(clean)for viruse will done in c# or java
please if any one have information about this subject pleeeese help me

423423

clean viruse in c#

computer_eng9-Jun-05 1:12

computer_eng

9-Jun-05 1:12

hi..
please ...please i neeeeeeed help about how the fixed(clean)for viruse will done in c# or java
please if any one have information about this subject pleeeese help me

Re: clean viruse in c#

Dave Kreskowiak9-Jun-05 6:52

Dave Kreskowiak

9-Jun-05 6:52

You say that like it's one simple method for every virus.

Sorry, it's not. Each virus has it's own cleaning method. This is because each virus either moves legitimate data/code to a known place (different for every virus), and if known can be put back, or just destroys the original data/code entirely, making cleaning impossible without restoring the file from a backup copy.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

rawsocket

computer_eng9-Jun-05 1:07

computer_eng

9-Jun-05 1:07

hi.. i need some help about raw socket how i can creat application in c# to catch the packet
the code that i found in codeproject is very complex and i need simple one only to catch the packet

Re: rawsocket

Dave Kreskowiak9-Jun-05 6:49

Dave Kreskowiak

9-Jun-05 6:49

computer_eng wrote:
i need simple one only to catch the packet

There is no "simple" method to catch packets. What you want to do is not an easy operation because it's tightly tied into the lower-level hardware of the NIC.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

.net framework required or not/do com interopt.?

montu33779-Jun-05 0:57

montu3377

9-Jun-05 0:57

Hi,

We had developed our project into C#.net 2005,Now client is having project which is in Vb 6.0 and that project is using one another .exe file but that is lincesed but now he wants that to use our project's(C#.net).exe into vb 6.0.

my question is that if we replaced that .exe file ,is client need .net framework on his pc?becoz our .exe file is of C#.net.

2nd question.
Now suppose if we don't want to installed .net framework on client pc in that case can we change our .dll file (convert our project into .dll(class library)) and after using COM interoptiblity on that dll and then make the .exe file and replace with vb 6.0?

so can anybody tell me what is better & easy way to solve this?
can anybody tell me that what is min. requirement in client pc to use .net exe?

thanks.

Re: .net framework required or not/do com interopt.?

Michael P Butler9-Jun-05 1:34

Michael P Butler

9-Jun-05 1:34

montu3377 wrote:
my question is that if we replaced that .exe file ,is client need .net framework on his pc?becoz our .exe file is of C#.net.

Yes. Any piece of software developed in C# to run on a Windows platform requires the .NET Framework to be installed.

Michael

CP Blog [^] Development Blog [^]

Re: .net framework required or not/do com interopt.?

montu33779-Jun-05 1:39

montu3377

9-Jun-05 1:39

Hi,

what about my second question?regarding requirement of com interoptiblity ?
which steps to be followed to make one .net dll to be com interoptiblity.?

Re: .net framework required or not/do com interopt.?

Michael P Butler9-Jun-05 2:17

Michael P Butler

9-Jun-05 2:17

This tutorial here[^] should get you started.

Michael

CP Blog [^] Development Blog [^]

Web Service shared class definition

chilberto9-Jun-05 0:53

chilberto

9-Jun-05 0:53

Hello,
I have two webservices that send/receive the same UserInfo class. How do I tell consumers that the UserInfo class is the same in both web services.

In other words:
[WebService(Namespace="thesamenamespace")]
public class web1 : System.Web.Services.WebService {
...
[WebMethod(Description="Update a user.")]
public void UpdateUser(UserInfo user) { }
}
[WebService(Namespace="thesamenamespace")]
public class web2 : System.Web.Services.WebService {
...
[WebMethod(Description="Get user.")]
public UserInfo GetUser() { return new UserInfo(); }
}

When consumed in the client (via visual studio add web reference to build proxies), UserInfo is treated as two different class definitions. How can I "share" the definition.

Thanks in advance, Jeff

Re: Web Service shared class definition

NassosReyzidis14-Jun-05 1:27

NassosReyzidis

14-Jun-05 1:27

hi Chilberto,
What you have to do is make a DLL project that defines the UserInfo class and add reference to both webServicies, that will solve the problem.
Hope that helps.

GanDad

accessing HID + c#

g00fyman8-Jun-05 23:54

g00fyman

8-Jun-05 23:54

hello to everyone,

i need some idea of how to access a USB HID magnetic card reader in C#. i have googled quickly and search these articles but have not found anything revealing.

does anyone know if any quick tutorials to acheive this ?

kind regards,

g00fy

Re: accessing HID + c#

Dave Kreskowiak9-Jun-05 6:45

Dave Kreskowiak

9-Jun-05 6:45

See if the manufacturer of the device has an SDK (Software development kit) for it. Without an SDK or reference for the device drivers for the device, you're out of luck. There is no such thing as "just accessing USB." Every device is different and requires its own driver. USB is NOT a generic access method for devices attached to it. It's an expansion bus, just like PCI, and just like PCI, each device must have it's own driver in order to communicate with it.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: accessing HID + c#

g00fyman9-Jun-05 18:54

g00fyman

9-Jun-05 18:54

well i have the option to purchase RS232 interface rather than USB, would this be better for me ?
or is it much the same if i have SDK for USB ?

if i can get the driver, is it then a matter of listening to a certain port ?
or is it more low level requiring hardware instructions ?
or is it driver dependant?

sorry alot of question

kind regards

g00fy

Re: accessing HID + c#

Dave Kreskowiak10-Jun-05 1:29

Dave Kreskowiak

10-Jun-05 1:29

g00fyman wrote:
well i have the option to purchase RS232 interface rather than USB, would this be better for me ?

Your still going to need to have the docs on the device so you know what commands the device accepts, how to format them, how to parse any data that comes back, ...

g00fyman wrote:
if i can get the driver, is it then a matter of listening to a certain port ?

If you don't have the driver, the device won't work!

g00fyman wrote:
is it more low level requiring hardware instructions ?
or is it driver dependant?

It's very hardware dependant. No matter what, you'll need some kind of documentation describing the command interface of the device. Without it, it'll be like your speaking Chinese in Oklahoma, if you even get to Oklahoma.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: accessing HID + c#

g00fyman10-Jun-05 1:35

g00fyman

10-Jun-05 1:35

thank you for all your help

regards

g00fy

C# Sql INSERT statment

Rinventive8-Jun-05 23:33

Rinventive

8-Jun-05 23:33

I am trying to insert data into a Access db. I am able to connect to the db fine. I get an error in the catch telling me I have a problem with my sql statment.

This is my sql statment. (I have checked the spelling of all variables and field, table names etc...)

All information is comming from textboxes

--except newNum -- uses a method to find the next avalible number

(worked like this on a different db)

string sqlString = "INSERT INTO Cafe (CustomerNumber, FirstName, LastName, Address, City, Province, PostalCode, PhoneNumber, UserName, Password, TimePurchased ) VALUES ("
+ newNum.ToString()
+ ",'" + FirstNameTxt.Text
+ "','" + LastNameTxt.Text
+ "','" + AddressTxt.Text
+ "','" + CityTxt.Text
+ "','" + ProvinceTxt.Text
+ "','" + PostalCodeTxt.Text.ToUpper()
+ "','" + PhoneNumTxt.Text
+ "','" + UserNameTxt.Text
+ "','" + PasswordTxt.Text
+ "'," + TimePurchaseTxt.Text.ToString()
+ ")";

the Access db is called Assignment3

the table is called Cafe

CustomerNumber (autoNumber) PK
FirstName (Text)
LastName (Text)
Address (Text)
City (Text)
Province (Text)
PostalCode (Text)
PhoneNumber (Number)
UserName (Text)
Password (Text)
TimePurchased (Number)

I am new to sql and would really like some help

Thanks

Re: C# Sql INSERT statment

codeprojectin8-Jun-05 23:47

codeprojectin

8-Jun-05 23:47

Remove the autonumber, and it would be better controlled by Access itself instead of your function.

Include the error message in the email. Also, provide the value of sqlString at runtime which would be easy for us to look into.

Re: C# Sql INSERT statment

Rinventive9-Jun-05 0:25

Rinventive

9-Jun-05 0:25

The autonumber is controled by Access. each feild does have a value when I debug.

Last Visit: 31-Dec-99 18:00 Last Update: 21-May-24 0:27

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