Creating Strings As Required
Sep 17, 2009
I need some help with creating string sin a code which will increase in value if the code requires ie. if the code returns a result then there needs to be a string called Emails1 or something similar to be created and store a string. If later in the code (using a for/next loop) another result is returned then Emails2 needs to be created and a different string saved to that. Here is the beta code I can't get to work: [code] I don't understand how I can get this to work like the other variable() works.
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Oct 6, 2011
I am trying to create a new MailAddress, the email is coming from Request Parameters, that is: Request.Params("fromEmail"). It is actually being sent from an android device through an http request.When I try to create a new MailAddress from this email, I get the error "The specified string is not in the form required for an e-mail address". When trying to create it directly, that it ma=new MailAddress("a@b.com") using the same coming string, it works, but creating it using ma=new MailAddress(Convert.ToString(Request.Params("fromEmail")) produces the error.
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Oct 24, 2009
I'd like to create a Dictionary that is indexed by Strings: Dictionary(of String, ...). I'd like the Type after the comma to be an Array of MyObject's. If all I do is the following:
Dim D as new Dictionary(of String, Array)
I feel like I'm missing out on some performance very time I access a member:
Dim Object1 as MyObject = MyDictionary("Key1")(4)
Doesn't it have to perform some type of lookup to figure out what type of object the array is holding every time I access it in this manner?
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Oct 16, 2009
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
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Apr 8, 2011
I have a class set up to hold values on a registration form (VB.NET, MVC), and among the properties is a Password property:
[Code]...
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Aug 13, 2009
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
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Jul 18, 2011
Does vb 2010 have a 'REQUIRED" property or control that allow you to make a textbox a "required" field? I googled and saw something about required property in controls in toolbox but somehow I could not find it anywhere in my vb 2010 toolbox. Would it be easier to write it? Does anyone have sample code?
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Aug 5, 2010
I have a list of strings. For each string in that list, I want to prepend another string. I wrote a method to do it, but I was wondering if there was something already in .NET I could use to do this. It seems like something that could be built in, but I was not able to find anything.
Here is the method I wrote:
Private Function PrependToAllInList(ByRef inputList As List(Of String), ByRef prependString As String) As List(Of String)
Dim returnList As List(Of String) = New List(Of String)
For Each inputString As String In inputList
returnList.Add(String.Format("{0}{1}", prependString, inputString))
[code].....
It works, but I would rather use built in functions whenever possible.
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Oct 16, 2009
I'm migrating from VB6 to VB.NET, in hence my questions below:
I have to write a function that returns array of strings.
How can I initiate it to empty array? I need it since I have to check if it's empty array after it returns from this function.
Is list of arrays better for this purpose? If I use a list - Is it empty when it firstly defined? How can I check it it's empty?
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Aug 15, 2011
I have been looking for examples to find the string between two strings. This top one works fine;
Public Sub ReadData(ByRef keywordStart As String, ByRef keywordEnd As String, ByVal filename As String)
Using reader = New StreamReader(filename)
[Code].....
Now the first one is fine - Ext_Volume is result of the string between the strings <Volume> and </Volume>. <Volume> and </Volume> are unique so this is straight forward.
However the second one - "^FDExp:" is unique, but "^FS" is not unique. There are occurances of "^FS" before and after "^FDExp:".
How do I get the string to search AFTER the occurrence, not before etc?
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Jun 24, 2011
Dim str As String
Dim str2 As Array
str = "blabla duhduh"
str2 = str.Split(" ")
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Apr 6, 2012
Say the string is something like
bla bla bla bla (cat) bladfdskdfd dsgdsdksf (dog)
dfdshfdskdskfsdfkhsdf sdkfhdsfkdf (kathy) fdsfhdskfhdsfkd (doggy)
I want a generic.list (of string) containing
cat
dog
kathy
doggy
How to do that with regular expression in vb.net
Later I want to do something more complicated like getting all strings between "url":" and ", from this strings
[Code].....
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Jan 8, 2012
Is there an easy way to find a certain string within a string and then return the strings that you find as an array?I have written this:
Public Function FindStrings(ByVal strSourceString As String, ByVal strStartString As String, ByVal strEndString As String) As String()
Dim StringStartposition As Integer
Dim StringEndPosition As Integer
Dim Currentposition As Integer = 1
[Code]...
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Jan 16, 2011
I have this string called time. It's value is in this format: HH:MM:SS The numbers change, but the format stays the same. I want to separtate the code into 3 strings Hour, Minutes, Seconds.
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May 14, 2009
I have a DataGridView that has some columns with dates. It binds to an in-memory Datatable which gets loaded from an string array of data passed back from the backend Some of the rows returned have nulls for the date columns. Solution 1: If I define the Date column in the DataTable as "string" I can easily convert those nulls to empty strings and display it in the grid as empty strings (desired results). However, if the user clicks on the date column header to sort by date, it doesn't order the rows as you want. You get a purely string sort order. Not acceptable
[Code]...
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Mar 4, 2010
What's wrong in here, I always get some nasty errors even if the same code that I used earlier works. But when I apply it to other form it gives me the error above.
here's my code:
Imports System.Data.OleDb
Public Class Updater2
Public adminID As String
[Code]....
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Feb 27, 2011
I'm trying out something with my Access db and gets this recurring error message: "No value given for one or more required parameters", even though there is no parameter in my query. Here's my code (By the way I am using Northwind DB):
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
strSQL = "SELECT CompanyName FROM Customers"
Dim con As New OleDbConnection(strCon)
Dim cmd As New OleDbCommand(strSQL, con)
[Code] .....
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Apr 21, 2011
Which parts of C# .NET framework are actually parts of the language? There are some features of C# that require specific type (the type has to implement System.IDisposable). Other features are based on patterns (any type that has something that looks like a method called Select() with the proper signature).What is the minimum set of types that C# requires from the library (the former case above)? How does that differ from other languages like VB.NET and F#?
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Dec 30, 2009
please tell me what is below code doing? is it creating array with two values or its creating to string index which will take value later? [code]
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Jun 23, 2011
<asp:AccessDataSource ID="productsubtype" Runat="server" DataFile="~/access_db/db_tables.mdb"
SelectCommand="SELECT [type], [id],[subtype] FROM [prod_subtype]"
UpdateCommand="UPDATE [prod_subtype] SET [subtype]=@subtype WHERE [id]=@id"
[code]....
When i press delete button in gridview i am getting error
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Oct 6, 2010
i am getting following error when i am running AJAX enabled ASP.Net application
The control with ID 'FilteredTextBoxExtender1' requires a ScriptManager on the page. The ScriptManager must appear before any controls that need it.
even though i have ScriptManager in my page
<form id="form1" runat="server">
<asp:scriptmanager id="ScriptManager1" runat="server" />
<div>
[Code].....
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Apr 10, 2012
I checked the code example at [URL].. and found one interesting thing: if we remove Public ReadOnly Property Items() from OrderItemData class, the service shows an error. Even if we don't try to access Items, and only working with Orders.Can somebody explain why this property is needed?
EDIT: To clarify: the property isn't used directly. I removed it from the code, it compiles successfully, but service returns Request error: "The server encountered an error processing the request. See server logs for more details." And there is no exception thrown.
I think that the service for some reason might need IQueryable(Of Item) property. Even if the property returns Nothing, the service starts working again:
Public ReadOnly Property Items() As IQueryable(Of Item) Get Return Nothing End Get End Property
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Aug 28, 2010
if we need to install ClickOnce application on client's computer, if we need to run a setup file made with ClickOnce?
Also, when we publish, how can we specify if we want to use ClickOnce or Windows installer?
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Apr 14, 2011
I'm trying to make following subroutine work. The problem is this part of the statement.[code]I've tried everything and can't seem to come up with a constant to use here.[code]
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Apr 27, 2010
I have created a program that creates a blank database in a users account (each user has a seperate folder when registered) by pressing a command button, i have got it to create the database but when i try to populate it with a table to go to the correct folder i get an error
Constant expression is required
the code im using for this is:
Const strConnection As String = ("Provider=Microsoft.Jet.OLEDB.4.0;" & _
[code].....
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Sep 9, 2010
I'm creating a login form with two text boxes and two buttons. I'm getting an error in the button1 click routine which is supposed to validate the userid and password. The error is in the Dim Reader line. It states; No value given for one or more required parameters.
Imports System.Data.OleDb
Public Class Form1
Dim MaxRows As Integer
Dim inc As Integer
[code]....
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Dec 15, 2011
when i click on update button vb shows error like this- "no value given for one or more required parameters"
this is my quiry-
openconn()
s = "update successfulstories set marriage_date='" & Format(dtpmarriagedate.Value) & "',groomfname='" & Trim(txtffname.Text) & "',groommname='" & Trim(txtfmname.Text) & "',groomlname='" &
Trim(txtflname.Text) & "',bridefname='" & Trim(txtmfname.Text) & "',bridemname='" & Trim(txtmmname.Text) & "',bridelname='" &
[code]....
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Feb 21, 2011
Error As No Value Given For One Or More Required Parameters.[code]...
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Feb 20, 2012
I wanted to know how I can solve my error.I used the "Add New Datasources" wizard to create a conection to my acces database with visual basic.net 2010. I then added two more after I created the datasources and I dragged the table navigator from the dataset from the datasouces window and I ran the system and It was bringing the information and was working great. However I then decided to add a few more columns to my table, and that is where the problem began the next time I tried to run the system it gives the error "no value given for one or more parameters"If you think it you can achieve it
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Feb 20, 2012
I wanted to know how I can solve my error.I used the "Add New Datasources" wizard to create a conection to my acces database with visual basic.net 2010. I then added two more after I created the datasources and I dragged the table navigator from the dataset from the datasouces window and I ran the system and It was bringing the information and was working great. However I then decided to add a few more columns to my table, and that is where the problem began the next time I tried to run the system it gives the error "no value given for one or more parameters"
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