What Types Are Required By C#
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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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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Nov 1, 2009
I have a class with a Property called 'Value' which is of type Object.Value can be of any type, a structure, a class, an array, IList etc.My problem is with the setter and determining whether the value has changed or not.This is simple enough for value types, but reference types and lists present a problem.For a class, would you assume that the Equals method has been implemented correctly, or just assume that the value has changed every time the setter is called?If I did assume it's changed, then perhaps I should assume it for value types as well, so that the behaviour is consistent.
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Jun 23, 2012
I need to compare two dictionary values if the types stored are equal, this is what i have
if gettype(Args(key)) = gettype(argtypes(key)) then
'' do something
end if
[Code]....
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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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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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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 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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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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Jun 12, 2009
Here is my code. I get error: No value given for one or more required parameters.
Dim DBAdd As New OleDbCommand
DBAdd.Connection = objConnection
DBAdd.Connection.Open()
DBAdd.CommandText = "INSERT INTO Table1
[code]....
I tried using update command of OLEDB Data adapters also by adding new row.But still I could not get record inserted in database.
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Apr 29, 2009
i am getting object required error.Please do let me know what the error is?[code]
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Oct 5, 2011
I have a sp which returns me:
Select 10 as Visits,5 as [Test_Drives],3 as Orders,'£5000' as [Profit_£],4 as Deliveries,'£6000' as [Delivered_Profit_£]
FOR XML PATH('CONTENT'),ROOT('SOMEROOT')
But when I use output as
Dim dr As New SqlDataAdapter(SqlCmd)
Dim tbl As New DataTable
dr.Fill(tbl)
I get an error
Column name 'Profit_£' contains an invalid XML identifier as required by FOR XML; '£'(0x00A3) is the first character at fault.
The problem is that I need have a raw name of column.
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Oct 27, 2010
From what I can see online the Overloads keyword is optional but is there ever a time when it is necessary? It even seems to be an error when used in a Module.
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Mar 30, 2010
Is there a way to make an input box value required? I have an input box that assigns the value to a label on my form, and I would like to know if you can prevent the user from leaving it blank and instead require a value?
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Dec 5, 2010
Dim Sql = "UPDATE employee SET [password]='" + TextBox2.Text + "', [Question]= '" + ComboBox1.Text + "', [Qans]= '" + TextBox4.Text + "', [employeeName]= '" + TextBox6.Text + "', [employee_MI]= '" + TextBox7.Text + "', [employeeLname]= '" + TextBox5.Text + "', [Birthdate]= '" + DateTimePicker1.Text + "', [Occupation]= '" + TextBox11.Text + "', [Address]= '" + TextBox12.Text + "', [Gender]= '" + ComboBox2.Text + "', [CivilStatus]= '" + ComboBox3.Text + "', [Citizenship]= '" + TextBox8.Text + "', [Telephone]= '" + TextBox9.Text + "' WHERE username = " + TextBox1.Text + ""
[code].....
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Jun 16, 2011
I'm not quite sure what im doing wrong here, im just trying to run this update query against my database. Basically its taking a value from the table Nameplate, and setting it to the corresponding value from the table [sheet1 (2)]
Everytime i run the query i get the error "No value given for one or more required parameters"[code]...
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Mar 11, 2010
Like InstallShield, you can choose installation settings without admin permission, but when you click Install, a system confirmation message appear (and that button has the shield icon).
Can I do it with VB.NET?What is big but light?
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Sep 8, 2009
I know there is a lot of open source projects out there but I can't seem to find any VB stuff. I have to come up with an application that will keep track of eqiupment we sell, service and repair.
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Mar 27, 2011
I can not update data in table access. It's show error : no value given for one or more required parameters
Sub EditData()
Dim cnSave As New ClsCommand
cnSave.TRRun()
[Code].....
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Mar 30, 2009
Im currently working on mendhak ADO.net tutorial and I keep getting this error when trying to add a new customer to the database.Load Event
[code]...
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