Write Constructor With Different Parameters In VB 2008
Oct 13, 2010In java the constructor is as follows
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can i make 4 constructors with diffrent parameters. now in vb how can i write constructor with parameters.
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.NET Constructor With Parameters And Inheritance?
Jun 29, 2010Why VB.NET (vs C#) does not "inherit" the constructors with parameters?
Public Class StopLine
Inherits Microsoft.VisualBasic.PowerPacks.LineShape
Public Sub New()
MyBase.New()
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Constructor With Parameters And Inheritance?
Jun 23, 2011I searched quickly and not find an explicit answer at the following question:Why VB.NET (vs C#) does not "inherit" the constructors with parameters?
Public Class StopLine
Inherits Microsoft.VisualBasic.PowerPacks.LineShape
Public Sub New()
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How To Call The Constructor With Parameters
Jun 1, 2010I am stuck with a problem about generic classes. I am confused how I call the constructor with parameters. [Code] I get error in the starred area of the DBLayer Object. What might be the possible reason? what can I do to fix it? I even want to add New(byval someval as datatype) in IDBObject interface for overloading construction. but it also gives an error? how can i do it? [Code]
View 4 RepliesInherit A Sub New (Constructor) With Parameters?
Apr 25, 2009In the code below I recieve the compile error "Error Too many arguments to 'Public Sub New()'" on the "Dim TestChild As ChildClass = New ChildClass("c")". I do not recieve it on "TestChild.Method1()" even though they are both on the base class I am inheriting from.
Public Class BaseClass
Public ReadOnly Text As String
Public Sub New(ByVal SetText As String)[code].....
As suggested below but I do not have to do that for Method 1 or other inherited methods and I am looking for the cleanest code possible. This may be a limitation in the system with inheriting parameterized New statements but I can not find it documented anywhere. If it is required then I would like to see the documentation.
.Net OOP Superclass Base.net And Constructor Parameters?
Mar 13, 2009I have a base class that contains a fairly large number of parameters in it's New constructor. I have 7 subclasses that inherit the Super base class. My question/issue is, all of the subclasses use the same values for most of the parameters in the New constructor of the base class and these subclasses can be called one after the other. I would like to populate the common values for the superclass and then use those for each of the subclasses, but I can't come up with a good way to do this. If I could figure out how to do this, I wouldn't have to pass all of those parameters in the MyBase.New call for each subclass. I'll try to illustrate with some code .
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VS 2008 How To Write The "parameters"
Sep 22, 2010am trying to use this:le=HTTP_Post to post a form. But I can't really figure out how to write the parameters.I've tried this
View 4 RepliesWrite A DLL That Will Take Two Parameters?
Sep 15, 2010I am trying to write a DLL that will take two parameters; a path and the text to write text to said path.
I want to be able to call this function from any other language that can be coded on windows, but nothing happens when I try to use this?
Public Class UTF16TextFile
Public Function UTF16TextFile(ByVal path As String, ByVal text As String) As String
Dim fs As New IO.FileStream(path, IO.FileMode.Create)
Dim sw As New IO.StreamWriter(fs, System.Text.Encoding.BigEndianUnicode)
sw.WriteLine(text)
sw.Close()
fs.Close()
End Function
End Class
Pass A Delegate Into A Constructor Of An Abstract Class From A Descendant's Constructor?
Feb 15, 2010I have an abstract class which requires a delegate to function. I pass the delegate into the constructor. Now that I have a non default constructor I need to call the abstract class's constructors from the concrete class which means that I need to use MyBase.New(...). I have included a quick example below.
Public MustInherit Class BaseClass
Public Delegate Sub WorkMethod()
Private _Work As WorkMethod
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I have tried to do this but I keep getting the following error: "Implicit reference to object under construction is not valid when calling another constructor".Can I not do what I am trying to do above? I initially had the delegate setup in its own setter method. But then I am creating a deceptive API because it does require a point to a method to work properly.
Why Is Constructor Call Valid Only As The First Statement In An Instance Constructor
Nov 2, 2009what's the rationale behind this limitation: Constructor call is valid only as the first statement in an instance constructor i want to pass an argument to my constructor which validates this argument and calls mybase.new according to this argument but it doesn't let me
example:
Public Class prob
Inherits System.ApplicationException
Public Sub New(ByVal problem As String, ByRef inner_exception As Exception)
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How To Write A Dll With Accpeting Parameters From External Applications
Jun 8, 2011I would like to know how to write a "Console application" in dll form for a patch installer so that I could call it from the installers and find out the installation of a program.I have created a VB.NET class project and checked the COM Interoperation or sort of on project's property, build section.Now the main thing is on receiving parameters and returning the value. (I try to do this DLL as "all-in-one" DLL because this application is part of a bigger suite family, which means there are few others applications that requires the similar approach, and I want to avoid to re-write a dll for each application, and their respective versions.)
View 2 RepliesWrite A Constructor So It Can "speak" To Other Classes?
Apr 23, 2011I just joined the forum and I saw that it's really helpful to a lot of people, so I thought I would get some .So basically, I'm trying to write a constructor so it can "speak" to other classes. For instance, I have two classes: Teacher and Studen
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As you can see from above, Student Inherits Teachers. This is similar to what my professor assigned the class to do, but on a bigger scale. So, I just want to the program to loop, adding text to the array. So, I would have one array with 10 "spots." I'm not sure if I'm making sense or not. But our assignment is to create Employees and each employee is either Hourly, Salary or Commission. The Hourly, Salary and Commission are all classes, and there is an Employee class. The Employee class enters in and saves all the information, but I can't get the Hourly class to save anything.
VS 2008 Add Handler From Constructor?
Aug 22, 2011I want to add a handler to an event in vb.net through a constructor .... i thought i would be able to do something like:
vb
Public Sub New(Optional ByVal PreDraw As [Delegate] = Nothing)
If PreDraw isnot Nothing then AddHandler Me.PreDraw, PreDraw
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VS 2008 - Creating Default Constructor Within Class
Feb 3, 2010I'm doing a lab for school, and I came across something I have never done before: create a default constructor within my class. It involves creating a private field to store the connection string, then create a default constructor that sets the connection string.
Here is what I have so far:
Public Class Appointments
Private sqlconnection As String = ConfigurationSettings.AppSettings("ConnectionString")
Private Property connectionstring() As String
Get
Return sqlconnection
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C# - Search For Names In The Database That Matches Whole Parameters Or Any Part Of Parameters
May 13, 2011I'm writing a query to select all records that has any part of parameter. I have one table called Employees. Some people have name like this: John David Clark If the parameter is
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I should be able to get result back as long as there's a match in the parameters. If I use Function Contains (q.FirstName & " " & q.LastName).Contains(employeeName), I will not get any result back if employeeName is "John Clark" Function Contains looks only for next words from left to right. It doesn't match a single word at a time. So that's why I used this in the Linq to SQL:
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Error [07002] The # Binded Parameters < The # Of Parameters Makers
Aug 30, 2010I am getting error [07002] the # binded parameters < the # of parameters makers, i checked both parameters were perfect even though i am getting this error here is my code
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Pass Parameters To CR In VB 2008?
Oct 12, 2008I've been trying to pass two parameters to my report using code the two parameters are DateTime type, my problem is crystal report viewer is still asking for the first parameter only and it accepts the second one?! in my report i've used two parameters ?firstDate and ?secondDate as dateTime parameters and used them in selctionformula where the date is between the two paramters.[code]...
View 4 RepliesVS 2008 - How To Setup EXE Parameters
Apr 24, 2009How can I set up parameters to work with my project?
Like execute_shell("myapplication.exe -filename.txt") or anything like that.
VS 2008 - Using DataTypes As Parameters
Aug 31, 2011I need to call a function that expects a DataType as a paremeter. I fail to get the right syntax to specify a datatype (integer, string, single, boolean, etc):
Public Sub AddSetting(ByVal PropertyName As String, ByVal PropertyType As Type, ByVal DefaultValue As String)
Dim p As New SettingsProperty(PropertyName)
p.PropertyType = PropertyType
p.DefaultValue = DefaultValue
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VS 2008 No Value Given For One Or More Required Parameters
Nov 7, 2011I am working vb.net08. Access Db. I am sending my below code for refference. Actually i am getting error when i am sending values from datatable to Temp Table in the Access Db. Error is : "No value given from one or more requaired parameters". In my datatable name called 'Crosstab1' few columns having text type and few columns having Value type. So i am getting error while i am Inserting values into Temp Table Called 'Official'. My Code is:
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VS 2008 Using Parameters In SQL Query
Jul 31, 2009Can anyone see what I'm doing wrong in this
Dim connStr As String = "connection string goes here"
Dim conn As New Odbc.OdbcConnection(connStr)
Dim comm As New Odbc.OdbcCommand("insert into mytable values (0, @P1, @P2, null, @P3, 'n')", conn)
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I get "A syntax error has occured." It appears as though my parameters aren't getting replaced with the values I'm telling it to use.
VS 2008 - Create A Program That We Like With Certain Parameters?
Apr 26, 2012we are suposed to create a program that we like with certain peramiters, I have done as much however I have an error and I can not find a solution anywhere. We are, before you ask, able to seek help on this matter. Here is what I have:
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VS 2008 - Pass Parameters To Other Console
Apr 26, 2010I cant seem to find a solution on how to pass parameters to another exe like adding some parameters after path in shortcut, and then launching that shortcut, only I want to do it directly without making shortcuts. So ,how would I pass parameters needed to start another exe (console in my case)?
View 1 RepliesVS 2008 Dynamic Menu WITH Parameters?
Mar 9, 2010[code]That code will add a new DropDownItem everytime I click on it, then everytime I click on those new created items it calls my "aa" function. How to I set this up so I can send a parameter? It just needs to be a single int parameter.
View 15 RepliesVS 2008 Error: No Value Given For One Or More Required Parameters
Mar 19, 2010i've got a database with a table called Customers, and i've created a form so that i can edit the customer details and update the database. However when i click the update button, it doesn't work and keeps coming up with the error which i've put in the title.
Private Sub btnupdatecustomer_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnupdatecustomer.Click
If MessageBox.Show("Are you sure you want to update your details?", "Save", MessageBoxButtons.YesNo) = Windows.Forms.DialogResult.Yes Then
Dim intPosition As Integer
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The bold/underlined text is where the error is coming up.What am i doing wrong? I've got a feeling it is something really stupid as i modelled the code on an example project that a teacher gave me, so it's practically the same code except for the field names etc.
VS 2008 How To Set Two Command Line Parameters
Dec 23, 2009as i need add the two commandline parameter on debug window.
/url=
one is okay
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VS 2008 Use Parameters While Filling A Dataset?
Apr 24, 2009i would like to know something more relating to parameters. i have always been adviced to use parameters but i am bit confused as to how to use parameters while filling a dataset like if i am using a oledbcommand i can always use paramters but how do i parameterise the following :
dgMastDet.DataSource = Nothing
myBindingPenBase = Nothing
txtCd.DataBindings.Clear()
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i am using the above code to filter a list in the dgv as a help dialog for the selection of a master.my prob. is the now xFilter is to be typed in a regional language. so it is bound to have an ' as a character at some point or the other and if that comes in the char. then it will b giving me an error.. so how do i use it as a parameter ?
VS 2008 Using Sql Parameters For Selecting From Sql Server?
Apr 17, 2010i know how to use parameters on INSERT, UPDATE and DELETE into sql server.like:
VBNet
updateCMD = "UPDATE table SET somevalue= @valueparam1 WHERE ID = 2"
Adapter.SelectCommand = New SqlCommand(updateCMD)
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VS 2008 Using Variables / Parameters In Sql Queries?
Sep 20, 2011I am using Visual Basic 2008 / MYSQL
Basically i have 2 tables in mysql called Data and products
The first sql query i want to do is something like this to scroll through the recordset of products and bring back information;
dbquery.commandtext = "select quantity, sku, condition from products"
But then what i want to do is bring back information from the Data table based on the sku and condition of the first sql?
so it would be something like this
subquery.commandtext = "select lowestprice from data where sku = *SKU FROM FIRST TABLE* and condition = *CONDITIONFROM FIRST TABLE*"
C# - Difference With Parameters.Add And Parameters.AddWithValue?
Feb 6, 2012Basically Commands has Parameters and parameters has functions like Add, AddWithValue, and etc. In all tutorials i've seen, i usually noticed that they are using Add instead of AddWithValue.
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since it saves my coding time. So which is better to use? Which is safe to use? Does it improves performance?
