how to handle the xml data sent from HTTPService request. simply how to receive the xml data, and read the xml data, then insert the xml data into database. I show you my code:
httpservice in flex:
var xmlFile:XML = new XML(createXML) ;//createXML is a xml String,
covert to real xml file
// testing.text=xmlFile; //it works fine.
[Code].....
I need to handle a soap request and send a response in a single string. My response is going well but I can not see a request string in my log file thought protocol analyzer can see it properly.
View 2 RepliesIm trying to send data from a Windows Form to an aspx page and send back a response. Im running around in circles trying to make this work. The data im trying to send is 4 strings. So fare I have this in my code, using the build-in webclient in visual studio 2010, in the windows form sending to the aspx
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i hav got a problemo with my client/server application that i created in vb.net.Actually i want to add a "Refresh button" at the client side such that when it is pressed some specific lines should be executed at the server side.(e.g. when the "refresh button" is pressed at the client side, the server should evaluate some variable "data" and executes this line "winsock.sendData(data)" )
View 3 RepliesSo I have a relatively small website with growing amounts of data - the fastest growing table is pageviews, as we do all our analytics ourselves. The website is made using VB.Net, SQL Server 2008 and jQuery. I am limited to .net 2.5.I currently handle all the data and validation using objects with a list of attributes. Each attribute is of a specific datatype and has a validation function when a new value is given to it. If the data does not validate then it won't even get as far as updating the database and feeds back an error to the user. Currently I have "Manager" classes and "Item" classes - Items are managed by a particular Manager class, for example Users are managed by the UserManager, so to get all the users I just have to call UserManager.Items. These Manager classes are stored in the cache and are created as needed - but once a Manager class is referenced it creates all of the Items within it. This is getting rather slow now, as the company is growing fast. It takes 2 - 3 seconds to load the first page (the page which makes most first-time requests to data) but I am not happy with this time. After that it is nearly instant.
Now the way I see it I have 3 options to speed the website up: Keep it as it is, but try to make it more efficient through other techniques;Change to creating all these objects on every page load, in the hope that it is simply so slow because I am using the cache to store a fair amount of data (about 10 MB or so at least);Forgetting using object oriented techniques and just use straight SQL queries and loop through records.
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I use vb.net but if it is easier in c#, I am trying to use this layout in email component.
I have an existing WSDL which returns information to remote devices using SOAP. However, I'm writing a new app with Android which doesn't support SOAP so I can't use the existing WSDL and have had to code a new app which looks for a querystring from the Android app and returns the data in a JSON packet. I've coded the module which receives the data okay but I'm unsure how to send the data back in JSON forma
View 1 RepliesI'm constantly getting FieldNotFound exception when trying to subscribe to quotes of a Forex symbol.
Although i added all the required tags and beyond.
(Which are: MDReqID,SubscriptionRequestType,MarketDepth,NoMDEntryTypes,MDEntryType,NoRelatedSym,Symbol. As specified here: [URL]
Here is my code:
Dim l_msg As New QuickFix42.MarketDataRequest(
New MDReqID(System.Guid.NewGuid.ToString),
New SubscriptionRequestType(SubscriptionRequestType.SNAPSHOT_PLUS_UPDATES),
New MarketDepth(1))
[CODE]...
I'm constantly getting FieldNotFound exception when trying to subscribe to quotes of a Forex symbol.Although i added all the required tags and beyond.ere is my code:
Dim l_msg As New QuickFix42.MarketDataRequest(
New MDReqID(System.Guid.NewGuid.ToString),
New SubscriptionRequestType(SubscriptionRequestType.SNAPSHOT_PLUS_UPDATES),
[code].....
I have form with combobox I have database contained 2 filed "ItemID" and "ItemName" The combobox fill her data from the database from field "ItemName" I do when I choose in the combobox any item and save, the data saved in database "ItemId" Not "ItemName" by define string put on it "itemId" when the user choose any item in combobox I need when I get the data that saved in database the combobox value="ItemName"
View 2 RepliesI am trying to search for a term on this site: [URL] and return the definition of the term to a RichTextBox. I can search for the term easily enough. My initial idea was to find a div class similar to every definition, and in the source returned from my WebRequest there is always the div class:
<div class="luna-Ent">
So for example, if you search the term "lol" and view the page source, the definition for that term is wrapped as follows:
<div class="luna-Ent">laughing out loud; laugh out loud: used as a response to something funny or as a follow-up to something said only as a joke.</div>
My problem is that I cannot split the string, which contains the entire text from this web response, leaving just the above. Which I would further split to leave just the definition.Every time I attempt to split the string I get a bogus result with randomly cut up words and nonsense. There is only one <div class="luna-Ent">, so I have no idea why this isn't working when it does with a simpler string such as "lol?55?44" which you would split using "?".Here is the code so far, please excuse the crappy variable names. I always structure my stuff like that when testing?
Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyDown
If e.KeyCode = Keys.Enter Then
e.SuppressKeyPress = True
[code]....
Instead of my method, is there any way to return only the data, from the web request, wrapped in that div class?
how it might be possible to only request the FileIO permission for the data directory created by clickonce? I want to run my clickonce exe from the web, but I only want to request the IO permission for the data directory where I am storing some user files. Unfortunately, I don't know the directory when I build the project.
View 4 RepliesI have recently started using Request("key") instead of Request.QueryString("key") to access my querystring values. However I have read that:
'Gets the specified object from the System.Web.HttpRequest.Cookies, System.Web.HttpRequest.Form, System.Web.HttpRequest.QueryString, System.Web.HttpRequest.ServerVariables'
Therefore, if I have a querystring key and cookie key which are the same, which value is returned?
I have a task to create a web service to receive client-side app's http request(with rpc={json data} in the end), deserilize it and put he parameter in stored Procedure in order to retrive data from sql server. the procedure query and client-side's app are already there and the return data to client-side app is JSON too
View 1 Replieshow to change the vb.net code to recieve data from serial port. The packect size of data is 23 bytes so the data recevied event is fored after 23 byte. the data from other end is transfering at 10 ms. after recieving data i have to extract data, add it to database & display the extarcted packet in datagridview.the problem is that i m not even handle the data at 100ms properly. it shows 9,10,6,7 packets in 1 sec. and some time thread synchronization error. i am attaching 2 project the vb6 project is transmitting data at 10/100 ms & the vb.net2008 appliction is doing all the stuff.
View 1 RepliesI tend to use
If Not IsDBNull(dr("data")) Then
myData = dr("data")
End If
to catch nulls. Is there a better way? It seems I use this over and over again? Anyone write a function to check this something like
mydata = IfNotNull("data")
I don't know how to handle the different data types that could be returned.
I have a small databse program that reads a .csv or text file.
my code
Public Sub OpenToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenToolStripMenuItem.Click
OpenFileDialog1.InitialDirectory = "c:"
OpenFileDialog1.Filter = "CSV Files (*.csv)|*.csv|Text Files (*.txt)|*.txt"
Me.OpenFileDialog1.FileName = ""
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i am trying to Catch a data mismatch, if the user happens to select a .csv or text file but they arent of the right type of data. Dim result As DialogResult = MessageBox.Show("Wrong Data Type", "Data Error", MessageBoxButtons.OK, MessageBoxIcon.Stop)If result = Windows.Forms.DialogResult.OK Then
(not sure what to put here)
End If
Catch
End Try
I want to make it so that if the user selects the wrong file, it stops executing shows the message box , the user is only given the option to hit "OK"then it starts the openfiledialog click event again or stops and the user can open the filedialog again It seems that even though the ex is caught the rest of the code will keep running and from what I can tell from the documentation thats by design?
I have a data grid view with columns created when it was filled from a sql table. some of the data types are "bit" (meaning 0 or 1 and automatically shows a check box in the column of in the data grid view).I need to get a handle of the cell that has a check box in it so that when a check box in one column is checked or unchecked, i can change the status of the rest of the columns (only one column can be checked at a time) and then update the entire row in the sql server..when column 3 in the data grid view is checked, app will uncheck column 2,4,5 run sql statement to update changes?
View 8 RepliesI'm wondering what a best practice is for handling this.I've got a standard vendor table - with VendorId (which is PK, numeric) and a field the users call SimpleId (which is usually a name - don't let the column name of SimpleId make you think it's numeric!).I've got one datatable that comes from a data adapter that looks like this. And this already changes the table in the SQL database...SqlDataAdapter("Select VendorId, SimpleId From Vendor_T", _connection)I've got this datatable on one panel of my form with a binding navigator - and you can change the SimpleId for a vendor with this.
View 16 RepliesI am new to VB and I have a database that has three related tables. These tables show information about computer engineers.
table one is engineers details
table two is engineers allocated
table three is jobs
My form needs to have buttons where a user can obtain information
View details of all Engineers
View Names of all the Engineers working on a specified job.
Add a new engineer
I have set up the connection to the data base using the wizards and also made the dataset. How to handle retrieving the data from multiple tables.
Here is a screen shot of my data set
Is this class normally slow or maybe there is something in my process making it slow.I have to import 170,000 rows of data from a fixed length text file into a SQL table. It takes about 2 minutes in a DTS package on SQL server 2000. But we are migrating to a SQL 2008 server and since this code has several manual steps and does not manipulate the data I thought it would be easier to use the TextFieldParser object to handle reading in the data.
Here is the code:
CODE:
I've looked through a lot of snippets online and I see a lot of things similar to
Dim bytes(tcpClient.ReceiveBufferSize) As Byte
networkStream.Read(bytes, 0, CInt(tcpClient.ReceiveBufferSize))
but what I am unsure of when to call such a thing? How do I know when there is data to receive...in visual basic 6 with winsock, there was a specific routine which was called upon data arrival, but I see nothing of the sort for vbNet.
How do I handle user submitted data to ensure best practice programming? I would like to know what are the best practice programming tasks in relation to users submitting data through a web form to a website. I am particularly interested in any C# or VB.NET commands that should be used through out the process from the moment the user hits the submit button until the data hits the database. I have been reading about reasons why you may want to take precautions such as SQL injections etc.
View 4 RepliesI'm trying to handle DBNull exception while reading data from database. It's my code:
...
Dim SQLRDAs SqlDataReader
...
val1= GetStringFromDB(Trim(SQLRD("Name")))
val2= GetStringFromDB(Trim(SQLRD("Level")))
[Code]...
But still I get Conversion from type 'DBNull' to type 'String' is not valid. error.
I am new to Viisual Basic 2008 and looking for some help or suggestions on what is the best way to handle a spreadsheet style data entery in an application.What is the best way to have data entry on a form that is in the style of a spreadsheet?I have tried it with the Gridview but I do not care for the interface style.I would like to be able to multiple columns under one heading, allow for tabbing from entry field to entry field on a row and have the ability to sort by different columns,to allow for calculations by fiedls in a row (havoing multiple calculations, etc.Is there something in VB 2005/2008 that will allow that or is there a third party add-on that is recommended.
View 6 RepliesSay I have a 5 GB file. I want to split it in the following way.
First 100 MB is on the file
The rest go some reserve file
I do not want to use readalllines kind of function because it's too slow for large files.
I do not want to read the whole file to the memory. I want the program to handle only a medium chunk of data at a time.
My tile-based map editor project. So far, it works really awesome. Here, look at a picture: [URL] And the screenshot is outdated: Now I got the Pencil, Rectangle and FloodFill tools too!, the tilesets are from that popular (well, not so popular) game engine called RPGMaker.
Currently, this is how the map is structured:
One ArrayList represents the X coordinates.
One ArrayList in each X represents the Y coordinates.
One ArrayList in each X,Y represents the tile.
The tile is an ArrayList containing three elements:
The Image name (Tileset01 in the screenshot), the X coordinate in the image, and the Y coordinate in the image. Those coordinates are from the TILESET01 image, not map.
Getting the idea?
How do you locate a tile in the map when it is clicked?
First I get the cursor's position on the map picturebox, then convert it to a multiple of 32 (the tiles are 32x32, yes), divide the position X and Y by 32. The results are the indexes I need to get to the tile I clicked.
That method works just fine for me.
When the map picturebox invalidates and needs painting... When that happens, I iterate through each X and Y arrayList. When I get the arrayList that represents the tile, I use it to draw on the map.
For example:
Iterating X arrayList.... step 8......
Iterating Y arrayList..... step 3.......
Found arrayList with three elemetns: ("Tileset01",32,96)
Draw image on the map picturebox, source is "Tileset01" on rectangle (32,96,32,32)... draw it on map picturebox's point (8 * 32) and (3 * 32)
And so on.
Now you understand how I am working with my map editor, how I am locating clicked tiles, and how I am drawing it. Everything goes fine, except for one problem: At some point, the user might want to make a 500x500 map.
That means, an arrayList with 500 elements representing the X tiles. Then an arrayList with 500 elements for each X tile, representing the Y tiles. Then an arrayList in each X,Y pair.
Then multiply that result by 5, because there will be 5 drawing layers. How am I supposed to handle such huge maps?! My app explodes when I set the map dimensions to 500x500! 500x500 is the max setting allowed in my app. I also know that 500x500 map editors are possible, because I have seen others before. With great performance.
I have recently started using Request("key") instead of Request.QueryString("key") to access my querystring values. However I have read that:
'Gets the specified object from the System.Web.HttpRequest.Cookies, System.Web.HttpRequest.Form, System.Web.HttpRequest.QueryString, System.Web.HttpRequest.ServerVariables'
[code].....
I am building a chat client/server. And I can connect and chat just fine, but when a user disconnects, the server does not recognize this and acts weird, often spamming the last message that was sent by the user..Also, it's like the client does not disconnect from the server even when I close the client app. Once I exit the program, VB acts like it is still debugging. Once the server is shut down however, I get this error:
IOException was unhandled:Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host.
serverStream.Read(inStream, 0, buffSize)I don't know how to make my client and server accept the fact that a client has disconnected...
My Request.Form keys are all prefixed with ctl00$container name$ and then the key I want.How can I get the regular key name working?
Visual example from the immediate window:I want to use:
? request.Form.Item("stationIdea")
but it won't work because the key is:
ctl00$content_innovation_body$stationIdea
as retrieved by
? request.Form.Keys("4")
so only this works:
? request.Form("ctl00$content_innovation_body$stationIdea")