C#

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Re: win form treeview image arkiboys23-Jul-08 4:24 arkiboys 23-Jul-08 4:24  Yes, it changes to an image with the index 0 When I click away then the original comes back on. There must be a bug in my code and that is why I am trying to solve this. Thanks for your time. Datagridview displaying garbage characters tkrn23-Jul-08 2:51 tkrn 23-Jul-08 2:51  Open up note pad, hold the left control and press backspace. You will produce a rectangle box character which i am not sure if it has any function or not in the operating system but when i pull data from my database, these characters appear where i believe are to be carriage returns. is there a way to parse/seperate those garbage characters out while still leaving them in the database? If the data is bound to a richtextbox control, the text appears formated with carriage returns correctly im stuck... Re: Datagridview displaying garbage characters SomeGuyThatIsMe23-Jul-08 3:19 SomeGuyThatIsMe 23-Jul-08 3:19  is it possible that the data is Unicode and you're treating it as normal ascii, or vise versa? i've accidently set varchar columns in the db to use nvarchar and it did some wierd things until i changed it back. they could also be special formatting characters that work in rich text, but a singleline textbox cant show them. Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good. Message Removed 23-Jul-08 4:53 tkrn 23-Jul-08 4:53  Message Removed Re: Datagridview displaying garbage characters SomeGuyThatIsMe23-Jul-08 5:36 SomeGuyThatIsMe 23-Jul-08 5:36  you could use regular expressions to filter the output for testing(until you figure out whats wrong) and only allow certain characters or classes of characters and see what fixes your problem, it isnt a very good permanent solution but it should let you quickly see what is causing the problem and figure out a way to prevent it from bieng loaded into the db or find a way to quickly get rid of it. Ive found this useful[^] Please remember to rate helpful or unhelpful answers, it lets us and people reading the forums know if our answers are any good. CollectionBase to PropertyGrid stancrm23-Jul-08 2:47 stancrm 23-Jul-08 2:47  Hello... I have a collection, derive from CollectionBase. If I put that collection to PropertyGrid, I cannot see the item in list. It shows only Capacity and Count. How to do that ? Thx... Re: CollectionBase to PropertyGrid darkelv23-Jul-08 6:33 darkelv 23-Jul-08 6:33  http://www.codeproject.com/KB/cs/dzcollectioneditor.aspx[^] Re: CollectionBase to PropertyGrid visualhint11-Aug-08 4:54 visualhint 11-Aug-08 4:54  Hi, If you want to see the items of the collection as child properties in the grid, you need to assign your collection property a TypeConverter that will publish the items as properties (override GetPropertiesSupported and GetProperties). Best regards, Nicolas Cadilhac @ VisualHint Smart PropertyGrid.Net Microsoft PropertyGrid Resource List Free PropertyGrid for MFC Smart FieldPackEditor.Net / DateTimePicker C# for Driver balu1234523-Jul-08 2:07 balu12345 23-Jul-08 2:07  Hi, I'm trying to find out if this is possible, and if so how to do it. From a machine running XP or Vista, as I understand it, when you send something to print, Windows/the print drivers render the file into a format the printer can read and understand (a spool file?). This file is sent to the printer then the local copy is deleted. I believe this file is held briefly in the 'C:\WINDOWS\system32\spool\PRINTERS' folder, which is effectively the shared print queue folder. for all printers on that machine. My question is whether you can capture this 'raw' spooler data (I've managed to copy and paste to capture the files that appear in the spool folder, but you have to be fast!), and crucially, once you've captured it, can you then somehow send it to print again? I have a feeling this is more complicated than I think. Presumably there are different formats of spooler data etc? Is there a utility that can do the printing/viewing of captured files? Re: C# for Driver snorkie23-Jul-08 3:00 snorkie 23-Jul-08 3:00  You could write something to monitor that directory and capture files that were created. I'm not sure if your copy of those files would cause problems in the printing process if the file is in use (the program copying it) when it is attempting to be deleted. There are ways to send the raw files right back to the printer to print again. But you need to realize that each printer has its own language. The Windows printer drivers take the documents and convert them to the language of the printer. So I'm not sure you could create something generic for all printers... How to send raw data to a printer by using C#.[^] Hogan ip address AlexPizzano23-Jul-08 1:50 AlexPizzano 23-Jul-08 1:50  say i was only given port numbers of all running servers in a particular LAN network. Any hint on how to obtained the corresponding ip addresses for these ports? Thanks in advance Re: ip address Mogaambo23-Jul-08 2:13 Mogaambo 23-Jul-08 2:13  Get the Ipaddreses of your lan first u can use command "net view" it gives the machine names of all your network , then get the corresponding ipaddress of each machine, then combine ipaddress combination with your port list and ping, if u got answer then u have the correct ipaddress. Re: ip address Harvey Saayman23-Jul-08 2:23 Harvey Saayman 23-Jul-08 2:23  i think you misunderstand how IP addresses and ports work think of a street with 10 buildings, each building has 10 flats and each flat has its own mail box. Now in this example the IP would be the buildings physical address and the port number would be the flat number. an IP points to a physical machine on a network and a port points to a specific service on that machine. Harvey Saayman - South Africa Junior Developer .Net, C#, SQL you.suck = (you.passion != Programming) Re: ip address Mogaambo23-Jul-08 2:48 Mogaambo 23-Jul-08 2:48  ok then use telnet<ipaddress port=""> if it gives the answer then u have the ip. Re: ip address Simon P Stevens24-Jul-08 2:58 Simon P Stevens 24-Jul-08 2:58  No you don't. All you have is the IP of a server with that port open. You may have multiple severs with the same port open. All of your servers may have that port open. You don't know you've got the one you were looking for. There is no way to resolve a port address to an IP address. Simon Re: ip address nelsonpaixao23-Jul-08 14:33 nelsonpaixao 23-Jul-08 14:33  you say server but you mean client i supose, right?! If you are the client you have to know the server ip in order to connect to network (how would you locate him otherwise?), but you don´t know the ip addresses of others clients like you. If you are the server you know the ip from all your clients ok?! because if you let then in your network you get their id (meaning ip address). Why don´t you download some server/client application here in codeproject to take a look at the code?! checked DateTimePicker kaustavG23-Jul-08 1:36 kaustavG 23-Jul-08 1:36  thanks budy for ur cinsideration but will not keep a seperate check box. the check will be embeded in the datetimepicker. Best Wishes Kaustav Ganguly Mindteck India Re: checked DateTimePicker DaveyM6923-Jul-08 2:13 DaveyM69 23-Jul-08 2:13  Reply on the trhread you started - not on a new one I've just noticed, the dateTimePicker already has a check box which handles this automatically which can be made visible by setting the ShowCheckBox property. Dave Attach event to html element mahmoud wafy23-Jul-08 1:03 mahmoud wafy 23-Jul-08 1:03  hi, I want to Attach event to html element in html file that opend with WebBrowser . thanks. Wafy using Directive clarification But_Im_a_Lady23-Jul-08 0:58 But_Im_a_Lady 23-Jul-08 0:58  Hi, I am 2 months into a new job and I have been looking at the structure of the main solution here, and one thing that puzzles me is the complete lack of any standards 2 questions I have are to do with USING directives:- EG at the top of all of the forms is : using System.Windows.Forms; but everywhere within code the whole name is qualified e.g :- private System.Windows.Forms.TabPage tabCustomer; this.tabCustomer = new System.Windows.Forms.TabPage(); 1) Does this have any extra overhead with regards to performance? 2) Also, is it good practice to ensure that any namespaces are declaring at the top of the code? Thanks in advance. Janet Lady Programmers are a rare breed! Re: using Directive clarification Luc Pattyn23-Jul-08 1:06 Luc Pattyn 23-Jul-08 1:06  Hi, Visual Studio generates a couple of using statements automatically when creating a new C# file. The Visual Designer always generates code with fully qualified type names, so no ambiguity can creep in. Some people insist on not using using statements at all, and always have fully qualified type names. But as a programmer you are free to use or not use using statements, and to use or not use fully qualified type names, as long as the compiler can find them and find them without ambiguity. There is no performance difference whatsoever. Luc Pattyn [Forum Guidelines] [My Articles] Voting for dummies? No thanks. Re: using Directive clarification But_Im_a_Lady23-Jul-08 1:11 But_Im_a_Lady 23-Jul-08 1:11  Thanks for the prompt reply glad to here there are no perfomance issues. I have to admit that code is far easier to read without fully qualified type names. Cheers again, Janet Lady Programmers are a rare breed! Re: using Directive clarification Luc Pattyn23-Jul-08 1:27 Luc Pattyn 23-Jul-08 1:27  You're welcome. But_Im_a_Lady wrote: code is far easier to read without fully qualified type names. That may change when your programs becomes very large though. Luc Pattyn [Forum Guidelines] [My Articles] Voting for dummies? No thanks. Using Threads in Windows Forms Megidolaon23-Jul-08 0:35 Megidolaon 23-Jul-08 0:35  I have a program that tests DB tables. As these tests can take up to several minutes, I want to outsource them into other threads, to at least give the user to possibility to abort them/exit the application. It's not intended that the user can execute several tests at a time, so I actually only need the main thread in which the Windows Form is running and a single worker thread that performs the test. My main problem is that I run the test table by table in a loop and each time a table has finished testing, several dictionaries and controls are updated. When the tests is performed by another thread, it means that the user can access the same dictionaries the testing thread is updating. So far I just tried to get the testing thread running and allow the user to abort it but I didn't have much success yet. I used the Windows Forms Invoke Method but that doesn't seem to help much, as the GUI still doesn't respond until the test is finished. Could you tell me what approach would be best? Should I use a ParameterizedThreadStart that gets passed a list of all dictionaries? And how would I go about updating the Windows Forms controls? Create some event that is fired when a table has finished testing? Thanks in advance. Re: Using Threads in Windows Forms DaveyM6923-Jul-08 0:53 DaveyM69 23-Jul-08 0:53  Have a look at the BackgroundWorker component. Dave

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