I am supporting one old project built on VB6.0.Can anyone please tell me how to store and retrieve collection from Dictionary.I searched over net but got nothing satisfactory.I really got strucked because of this.Please provide Any Example or Any Link,so that i can do self study.
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I need to Store Objects with Key like:
Key: <Fontname & FontSize> / Object: <Font Object>
Example content:
ArialRegular8 | <Corresponding Font Object>
ImpactItalic10 | <Corresponding Font Object>
TimesRomanRegular12 | <Corresponding Font Object>
These font types come from an external library, the real type is DocumentFont, I prefer not to store just values and recreate the font object later, so I need to store the object, and i want to be able to call Contains() later without looping. like for example Dictionary (of T Key, T Value), is this the best option? Also, to be able to call Contains(), i will have to overload function Contains() using an Interface or this is already built-in in some Collections / Dictionaries when using a String as Key?
I like the PHP way of doing things but, it seems I am stuck with using a Collection of Object's to store/retrieve the data I need. I have my Collection loaded with my Objects's and the code to iterate through the collection, my problem is I am unable to retrieve the "key" as it would be called in PHP (I believe in this case it is actually the name of the object).
Consider the following example:
Dim xDoc As XPathDocument = New XPathDocument(fName)
Dim xNav As XPathNavigator = xDoc.CreateNavigator()
Dim sender As XPathNodeIterator
[CODE]...
As you can see, I am navigating an XML document, and creating an Object with some Key/Value pairs. The Object would look something like this if it were in JSON:
{"name":"John Smith","address1":"123 Anywhere St.","city":"This City","state":"FL"}
When I iterate though the Collection I can only get the value of the object, but I need the Key, in this instance I want "name","address1","city","state" to be stored in a variable for each iteration.
I have created a class with a function in it. I have a collection of data I want to pass back. I tried an arraylist first. Now I am trying to use a dictionary. My problem is that it creates the dictionary ok, but I am only get the last row of data from my
Function GetWeldAuditInfo(ByVal ResourceId
As
String,
ByVal VendorId
[CODE].........................
If I want to get the length of Dictionary collection.Would this line of code be correct?
dim x as integer = Len(myDictionary)
I'd like to store a set of key/value pairs in the application settings of my ASP.NET web app, but I'm not finding a straightforward way to do that. For example, these two questions tell me that StringDictionary etc. won't serialize to XML and suggest that I'll have to roll my own implementation. But it seems like this should be easier to do; after all, web.config is XML and < applicationSettings> is essentially a collection of key/value pairs, so it feels like I'm missing something obvious. Given my specific case below, do I really have to roll my own serialization, or is there an easier workaround?
The web app in question is a basic contact form that sends email to different recipients based on the value of a parameter; e.g. [URL]...The goal is to be able add or remove recipients (or change their addresses) by editing the web.config file so that I don't have to recompile and can easily maintain different configurations in test and production environments. For example:
// I can use something like this for the sender address SmtpMsg.From = New MailAddress(My.Settings.EmailSender)
// And then just edit this part of web.config to use different addresses in different environments.
<setting name="EmailSender" serializeAs="String"> <value>webcontact@exampledomain.com</value>
[Code]...
Is it possible to store Excel sheet and it's corresponding rows into a Dictionary and then later retrieve the rows into a DataGridView depending on the selected Sheet name from a combo?
View 3 RepliesI'd like to use a dictionary to store the contents of an ini file. Now I know you can simply say
myArray.add("key1","value1")
myArray.add("key2","value2")
etc...
But Id like to store more information with a specific key, not just a single value, so id like to associate other values with key1 eg firstname,surname,address.
So by knowing the value of 'key1' I could retrieve the firstname, surname or address associated with it.
I know in PERL, hash arrays work in this manner
eg
$hash{'key1}{'firstname'} = 'john';
$hash{'key1}{'surname'} = 'smith';
etc....
I am attempting to write a Dictionary Collection to a file.The Collection is structured like so:
GlobalCollection (Collection of TestCollection)
(0)
[KEY]
[code].....
I have been making an rpg that i have been programing to be event driven, so the last step at this point is the items... i tryed using dictionary to store all the items but this kinda failed(Im not shure if dictionary is good idea for something like this any way). well i know how to hard code the items but i dont want to do this(Event Drivien is better). So any ideas on how i could store the items?
View 5 Repliesway that I can create a program that has the ability to check spelling that are being entered by a user or even displays a definition of a word? For example, when a user keys in a word in textbox then displays a definition into another tetbox but the main concern here is the source of the definition. Of course, it would be a very long task if i would manually encode words and their definitions in a database and retrieve them. I mean, can I just retrieve definition from a dictionary source, like maybe
View 1 RepliesI built a custom class and collection for the class for an app that I'm creating. What would be the best way for me to store it so that it will be available on the next startup of the app? It's a pretty simple class with a few strings, etc.
View 12 Repliesis possible to store a colletion into database field (ms sql server) is this case, the collection can contains different data types. What data type should be the database field ?
View 4 RepliesI am using VS2008 Pro. I have a simple DVD database built. I'm trying to make a data driven app to store my dvd collection.One of my tables is Actors and is structured as follows.[code]On a form in my app I have a combobox. I'm trying to make it list FirstName LastName ie. Will Smith. I know how to make a query that'll take the LastName and FirstName fields and list it as Actor. I'm having a heck of a time getting it to do that in the combobox as it'll only let me use one field for the display and won't let me use the query I've made.[code]I keep getting some error about schema don't match default query. I know I could simply change the table to only have one field that holds first and last name, but from what I understand that's not proper db practice. I've searched this site and google until I was blue in the face at looking at soulutions that don't match what I'm trying to do.
View 3 RepliesI have a string array called m_DirFileList and a collection called myFileCollection. I'm trying to loop through the items in the collection and store each one in the string array. It's not working though.
[code]...
I would like to store references to a bunch of structs in a collection. The general scaffolding looks like this:
Structure myStructType
Dim prop1 as String
Dim prop2 as int
End Structure
[Code]....
now this doesn't work, because it's referencing the same memory. What I would really want is the 'pass reference by value' behaviour that is also used for reference types, so that I can easily keep producing more of them.
Is there any way to fix this other than to make the structs into classes? Is this actually a proper way to use structs, or do I have it all wrong?
I'm working on a small project and got into some troubles trying to keep it OOP.I have a global variable:
Public Stations As New Microsoft.VisualBasic.Collection()
And 2 classess: Station & Unit:
Public Class Station
[code].....
I am trying to come up with a way to store 3 pieces of information for each employee in the company on a daily basis. So for instance:
Day 1: Joe, 8, 80
Day 2: Sam, 10, 90
Day 3: Bill, 5, 40
Day 4: Bob, 8, 40
Day 5: Sue, 2, 50
I am very new to collections and most of the applications that I build are Create, Read, Update and Delete type applications that don't really need arrays so I have almost no experience with either.
This is what I have so far.
VB
'
Dim iDays As Integer = NumberDaysPerMonth(Date.Now)
Dim DayNumber(iDays) As Integer
Dim EmployeeRecords As List(Of String) = New List(Of String)
For i = 1 To DayNumber.Count - 1
[Code] .....
I am a beginner on Visual Basic but was able to create the 'skeleton' of the application I need to build. Basically, it is an application dedicated to keeping a check on the vinyl I have. When I buy a new record, I want to effectively 'Add New Record' on Visual Basic and be greeted with a page consisting of various forms such as 'Artist' and Title'. Once these are filled in, I want to click 'Enter' and for all that information to be converted to one of the pages within my application.
Here's an easier look at it...
There are LPs that have 10" and 12" sections.
There are singles that have 7" and 12" sections.
In the 'Add New Record' page I want to also have a drop down list with the above elements in, once 12" LP is selected and all the other forms are filled in and I click 'Enter' - I want the application to send it to the 12" LP section of the application.
I would like to be able to retrieve a substring in a string... I have a variable named htmlTAG that contains the contents of a webpage... I need to be able to get the text that is
search_type=reverseaddress" rel=nofollow>Text to retrieve... </A>
And store it in a textbox1, then go to next instance of that and get the text again... to the end and be able to exclude all instances that say "See full listing".
Attributor 2.0
We are trying to store and retrieve datatable as blob (varbinary(max)). We convert the existing datatable into an xml file and store that xml file as a blob and while retrieving we get the blob as xml file and convert it back to datatble. It seems to be storing and retrieving the xml object but having issues while converting it back to the datatable ("End of stream - error").
View 2 RepliesYour code works perfectly well. how to store and retrieve image from a database(sql) using vb.net
View 1 Replieshow to store and retrieve image in ms access using vb.net coding
View 3 RepliesI built a small website and there will be only one admin, so in the admin panel I am asking for a password with a value that I do not retrieve from a database, I just hard coded it in the function in code behind, I know this is wrong though I don't know why.
So is hard coding it in web.config the right thing to do? and how?
Here is my problem: I need to store HTML in a MySQL database. Afterwards, I need to be able to retrieve the HTML and have it be valid HTML that a browser can render.
How can I store HTML in a MySQL database using .Net? How do I retrieve it afterwards? As this is the design phase, I can create the database any way that is needed.
I have two classes, one nested in the other. [code]Neither "Name" or "ID" are unique between operations and records.I wish to construct a dictionary using LINQ = Dictionary(Of String, Of List(Of Integer), whereby the keys are uniqe examples of Names in my collection and the values are the collective set of distinct IDs that are associated with those names.
View 2 RepliesWe use a custom collection derived from CollectionBase to store our Business objects
[Code]...
In my application I have many different forms each use 3 different database. And right now I am placing the connection string in each form but when it is need to change I have to change in every form. Now what I want to store all connection string in a vb class and call them in every form. So that if I need to change I can do in that class. I have stored my connection string in database so even I don't want to connect to database again and again. I have some idea in which maybe a public class is used and some how I will call it on other forms.
View 2 Replieshow to store & retrieve images from d access database using vb.net 2008
View 2 RepliesI have a connection string in my database which I read throughout my VB .Net application. I have another string which is NOT a connection string though. It instead has information about a domain on LDAP. So LDAP string just needs to be stored in the web.config as a string, and also to be retrieved as a string.
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