.Net Friendly, Local, Key-value Pair, Replicatable Datastore?
May 24, 2010
Needs to be a component of some sort. No additional installation needed.The datastore needs to be on the local hard drive.I am using VB.Net for a desktop app running Windows XP through 7 so it needs to callable by that environment.It needs to replicatable. If I have four copies of my app running on the network, each local copy of the datastore needs to replicate with the others. As close to real time as possible.
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Mar 2, 2011
I originally posted this to the XML forum and it was suggested that I post here to see what other options might be available. The complete post is here. [URL] Wondering if someone can offer me some advice on a suitable solution for an application I'm developing. I've used xml and text files in VB.net fairly extensively for storing configuration files and the like but I'm wondering if there
[Code]...
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Mar 10, 2009
I have an application that generates a excel file using a datastore data.It was all working fine till the user asked me that he wants choose the location and name for the new file.I tried to use the html control file field, but it works only wth a pre-existing file. Then i tried the following code :
Dim fdlg As System.Windows.Forms.OpenFileDialog = New OpenFileDialog
fdlg.Title = "Escolha a localiza��o para a grava��o do arquivo excel"
fdlg.InitialDirectory = "c:\"
fdlg.Filter = "Excel Files (*.xls)|*.xls|Excel Files (*.xlsx)|*.xlsx"
[Code]...
It seams to work, but the browse window, does not appear. After sometime i realized that it opens, but behind the bowser, and it does not work since the buttons and windows does not appear.
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Feb 11, 2012
an application working with a modem through usb virtual port,on every different computer it gives different COM port numbers so I have to guess it. How to get COM port number by friendly name like in Windows Device Manager if i know GUID, PID & VID of device. Does anybody have a code snippet?
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Jul 11, 2011
I have a module which will be responsible for parsing CSV data received from different user via a website interface, and I have to parse that CSV. I was considering to use, TextFieldParser for it.
But before I could implement I was considering what shall be a better approach...
Generating MemoryStream from data received,
or initialising a StringReader from the same input string.
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Jul 6, 2009
After researching all the possible ways of sending the output of my program to an email address, I have yet to settle on the most user friendly way to go about this.I have created a form for a property management company I work for. I would like to send the output to a designated email address by a click of a button.Now given that the average user that will be using this software may not be necessarily tech savvy, I would like to make it do this as simply as possible and that means not having to know the smtp. Also considering that the user may not be on their terminal when using this software, using outlook to send the output may not be the best way to go about this. I have tried adding a webbrowser control and sending the email via html but I am not sure if that is the most logical way to do this.
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May 10, 2009
Forget fancy shmancy web stuff. I'm looking for a good .NET CLI argument processing utility, prefer open source code. This is for quick and dirty utilities that need robust and friendly command line argument handling.These are utilities with maybe a day of effort in them. Investing a few days writing good command line handling seems overkill but they really need it.Features I like in command line handlers. I'd be thrilled with any open source project that had 2 or 3 of the following.A consistent syntax, posix had a nice command line standard, but not necessarily posix.Ability to provide short names for agruments. E.g. "msbuild /t" == "msbuild /target".It supports good command line parsing then gets out of the way. I want some that my code uses, not something that imposes a pattern on my code e.g. I don't want to have to respond to the presence of an arg with an event, that type of thing. Seperation of concerns is good enough that it's logic can be unit tested. Oh - is it two much to ask for it to read attributes off a class properties (as in .NET configuration classes)? I like the config file overrides in msbuild. I can set properties in a build file, but override on the command line. Built in "show usage". WSF files (csript.exe) have this functionality. I'm not willing to write jscript to get the command line handling though.Not powershell. I can't find anyone in my company who can stand Powershell syntax.
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Mar 8, 2012
I have created a vb application connected to MS Database. I have used try..catch statements to trap exceptions and display messages on the error found, but the problem is that these messages are too technical for the end users to understand. Is there a way of retrieving the error number or code of that exceptions thrown so that i can customize the message for the users?
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Mar 10, 2011
Essentially what I want to do is have a few pages that act as templates for data. If a url is url... I want to query a friendly url field for "/home" which would return url...
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Feb 8, 2010
Im using a function to set an option on a web page - I'm trying to capture the return message (Which is "ok" or an error), I want to cature "ok" and return a friendly message, otherwise return the actual message. This If Then Else seems to be false for the If even when "ok" is returned:
[Code]....
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Jun 3, 2011
My current program is reading a XML doc and using it then moving it to a different directory to be archived once it is finished using the xml.
I want to be able (upon completion) move and rename the file to a new folder, I want the folder to be the current date/time as well.
So basically have 4/4/2011 9:56AM.xml in the folder 4/4/2011 9:56AM.
getting the function DateTime.Now in a format that can be saved. Folders and files cannot contain the " / " or " : "
A more Sql server type of date would be fine like 24-Jun-89 13:32:22 but I don't know how to get something like that.
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Oct 20, 2010
I like to user custom errors in my site. The Idea is to trap errors and display friendly meaningful messages to users. The real error details (line number, Page ...) will sent to me by e-mail. I am programming in VB.NET. Until now every code that i found about this say's that i must use the global.asax for it. I do not like to use global.asax, I just like to make an error page that will sent me a -email with all the error details. Until now, I go to the web.config file and insert this line:
<customErrors defaultRedirect="test.aspx" mode="On"></customErrors>
test.aspx looks like this:
Sub Page_Error(sender as Object, e as EventArgs)
Dim ctxOBJ As HttpContext
Dim exceptionOBJ As Exception
Dim errorInfoTXT As String
[Code] ....
When here is an error in some page its redirect me to test.aspx but not showing any error.
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Jun 18, 2009
The following code checks each sentence in the listbox and if certain conditions are matched it add a piece of data to the list new question. Each input from the user is checked against each sentance in the listbox and if a match is found (based on the conditions) only then the data is added to the list and the loop exits. My problem now is that for each itteration cycle In_dep_token_pair.Key and trigger_dependency_token_pair can not be Subject and DirectObject at the same time. Is there any way to test for the next item in the keyvaluepair within the same itteration cycle? Something like trigger_dependency_token_pair(current item).Key = "Subject" and trigger_dependency_token_pair.key = "DirectObject".
If (Input_pair.Key = predicate) And (In_dep_token_pair.Key = "Subject" And trigger_dependency_token_pair.Key = "Subject") And _
(In_dep_token_pair.Value = trigger_dependency_token_pair.Value) Then
If (In_dep_token_pair.Key = "DirectObject" And trigger_dependency_token_pair.Key = "DirectObject") Then
If (In_dep_token_pair.Value = trigger_dependency_token_pair.Value) Then
[code].....
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Oct 27, 2010
I need to return an error message to the client, if they have entered invalid data when calling my web service. So if my code is: [code]Is there a way to display a more user friendly error message (such as a message box or just the words "Invalid Order ID")?
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Jun 22, 2011
In my VB.NET code behind, I've created a multiple name/value pair cookie like this:
Dim UserCookie As HttpCookie = New HttpCookie("UserInfo")
UserCookie.Values.Add("UserNumber", Me.UserNumber.Text)
UserCookie.Values.Add("Password", Me.Password.Text)
UserCookie.Values.Add("UserName", Me.UserName.ToString)
Response.Cookies.Add(UserCookie)
Now, what I need to do (somehow) is read that 'UserInfo' cookie in javascript and be able to extract those values at will. Most of what I'm finding out there doesn't quite do what I need to do.I'm trying to do something like this:
var MyValue = ReadCookie("UserInfo", "UserName")
And MyValue would equal whatever the user had typed into the textbox.
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Jan 27, 2011
Normally when I populate a combobox I do so by binding it to a datatable and assigning a display member and value member. I would like to do the same thing by adding pairs of items in code.I tried using a key-value pair, but that didn't work. The combobox displayed both the key and the value. I would like to have it just display one of the values and leave the other one invisible to the user, but available to me as a key.I thought about creating a custom class with two properties - one to use as the display member and the other to use as the value member. But before I re-invent the wheel I thought I'd check to see if there's already something there in the framework that I'm missing.
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Apr 28, 2010
VB2008. I would like to use a Dictionary(Of TKey, Tvalue) where the key is a pair of Integer (and TValue is String, no problem). How can I declare it ? How can I add an item ? How can I retrieve a value, knowing the key ? I can do it when the key is an Integer, but with a pair of Integer I am lost.
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Jun 22, 2011
I need to return json data from the server, which can be used on the client side and I am not sure the best way to format the json data.
So basically, What is the best way to format the json data to include:
key/value pairs so they can be looped through at clientside (loop via jquery), a count of the number of id/value pairs which can be used at clientside for other purposes (used via jquery).
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Mar 1, 2010
I am trying to parse a particular attribute/value pair from XML in VB.NET. The XML is originally a string that looks like XML but it needs to be converted to an XML-like datatype or structure before I can parse it. How can I convert this string into XML, and then parse the info that I need?
[Code]...
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May 17, 2010
I'm using VB.Net's RijndaelManaged (RM) to encrypt files, using the RM.GenerateKey and RM.GenerateIV methods to generate the Key and IV and encrypting the file using the CryptoStream class. I'm planning on saving this Key and IV to a file and want to make sure I'm doing it the right way. I am combining the IV+Key, and encrypting that with my RSA Public key and writing it out to a file. Then, to decrypt I use the RSA Private key on this file to get the IV+Key, split them up and set RM.Key and RM.IV to these values and run the decryptor.
Is this the best method to accomplish this, or is there a preferred method for saving the IV & Key?
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Mar 25, 2012
I have lots of TV Shows on my Hard Disk and every week I update that HD with the new episodes that have aired (I also download the .srt - subtitles - files) .
To do this, i have to take each pair of file (the .mp4 and .srt files) and put them in the HD folder (Ex: E:Tv ShowsDr HouseSeason 8). I have to do this lots of times and I waste several time to do this..
So, I was thinking, why not making a VS application to do this job?
I select all my .mp4 and .srt files from the week (witch are contained in a folder) and i drag them into my application witch should check the names of the files (they both have the same nome, Ex: House.S01E01.mp4 and House.S01E01.srt) and, by the first name ("House") search a hard drive witch I choose, and move my selected files to the "House" folder (where I have all the seasons of the Tv Show).
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Jan 14, 2011
I'm trying to modify an app.config file that is not part of my .net application.My key needs to be unique and appear under a static key (Server1 or Server2) as the other application reads these values line by line, associating the database(n) value with the server(n) value.I cannot see a method of using the standard app.config methods against an external .config file, so I'm using the Xml Document class.[code]But cannot find a method of retriving the Key to check if it exists and more importantly increment the value?
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Jun 27, 2009
I am looking for a way to store a key-value pair in the application settings. From what I have found, key-value pair dictionaries are not serializable, and therefore cannot be stored in the application settings.Currently I have tried all sorts of dictionaries and collections and all of them work, until I restart the application, then all the settings are gone.
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Mar 13, 2012
I remember reading once that .NET had a built in configSection handler that could handle a collection of key/value pairs without having to code my own custom classes. Similar to appSettings, but I can name the containing tag my own name and just start listing key/value pairs.Anyone know if this exists and what it is called?
Example:
<configuration>
<configSections>
[code].....
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Dec 18, 2006
What is the best way to create a key value pair for a filename and filepath with filename.1.Obtain files within a directory for a known suffix (eg. html)2. Set variable to filename only using GetFileName()3dd filename to Listbox, ComboBox, etc.4.When user selects FileName, use value (path and filename c:/xxx/xxx/filename to use as argument for Process.Start(PathFileName)
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
For Each filePath In IO.Directory.GetFiles(path, "*.html",
[code]....
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Apr 11, 2010
How to find a matching pair of values in two different arrays? Here's the scenario:
Index Array1 Array2
0 1 3
1 2 5
[code].....
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Jul 23, 2009
I'm trying to obtain name/value pair of enumeration typed into text box with LINQ. It's OK with name, but when LINQ reaches values, it throws error: "Conversion from string "Black" to type 'Integer' is not valid". I have read that if I want to obtain a value, then I gotta use conversion function.
Here's code (button's Click event):
Private Sub GetEnums(ByVal sender As Object, ByVal e As RoutedEventArgs)
lstEnums.Items.Clear()
Dim typeName = Type.GetType(txtEnum.Text)
Dim enums = From en In typeName.GetEnumNames
[code].....
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Aug 11, 2009
how to add multiple text to a point pair list in Zedgraph. Add text to one point pair can be done like this:
Dim myPane As GraphPane = zg1.GraphPane
Dim TextObj As New ZedGraph.TextObj("High", 10, 10, CoordType.AxisXYScale, AlignH.Center, AlignV.Center)
[Code]....
Theres a problem with the code above when the graph scrolls the text is following as it should, but it's also visible in the pane background.
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May 4, 2012
I'm trying to figure out what the best method is for attaching a single key/value pair attribute to an enumeration where the key is my MerchantId and the value is the corresponding TransactionKey. What I currently do is put a comma delimited string into a StringValueAttribute class:
Public Enum Merchants
<StringValue("coke,faj80785hq+faf=-1=-jfa+">
Coke = 0
<StringValue("pepsi,adfji=-901jnas++fdj98ua")>
Pepsi = 1
<StringValue("drpepper,jk878-=+9kdkdja0=a=f--daj")>
DrPepper = 2
[Code]...
Is this the most efficient way to do this? Instead of StringValueAttribute, what about creating an attribute using a Dictionary(Of String, String) since it is a key/value pair list? Or String Array or List? Maybe something in LINQ?
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Apr 24, 2010
Is there such a thing as a type similar to a point, but contains a pair of decimals, or a pair of doubles, rather than integers? I searched the forums and google with no luck. I can't believe this has never come up before, I must have been using the wrong search terms.
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