Oop - Put A Default Value To A Parameter Of A Function?
Dec 9, 2010its just like that in other langauges (php in the example)
function myFunction($message,$sender="nodoby") {
return $message." by ".$sender;
}
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Specify DEFAULT For Optional Parameter To Stored Procedure Wrapper Function?
Sep 18, 2009My problem is this (apologies if this is a little long ... hang in there):I can define a function in VB.NET with optional parameters that wraps a SQL procedure:
Sub Test(OptionalByVal Arg1 As Integer _
Optional ByVal Arg2 As Integer _
Optional ByVal Arg3 As Integer
[code].....
VS 2008 Template Function That Can Receive Different Parameter And A Type Parameter
Mar 9, 2011I want to have a "template" function that can receive different parameter and a type parameter, like:[code]But Vb told me that tupeList is not defined... is there a way I can do that?
View 2 RepliesAdo.net - Execute A Stored Function In Oracle Or Sql - Adding The Parameter Values Of The Function
Dec 13, 2011I need to execute a stored function in oracle or sql through vb.net. I created a command object. Depending on the database type(oracle or SQL) i am preparing the Command text as Select functionName(?,?,?,?,?,?,?,?) from dual; (For Oracle) Adding the parameter values of the function. Now performing the ExecuteScalar which is not working saying invalid parameter. This works with ODBC connection string. But ODBC doesn't with 64bit. My Requirement: Code should execute a user defined stored procedure by taking the values at runtime.
View 1 RepliesPass Function (Of TElement / TKey) As A Function Parameter
May 28, 2012I want to make a GetAllContacts method which takes a sort parameter of type Func(Of Contact, TKey) which is the same type that the OrderBy method for an IEnumerable(Of Contact) takes.[code]"Too many arguments to extension method 'Public Function ElementAtOrDefault(index As Integer) As Contact' defined in 'System.Linq.Enumerable'." on the second parameter.
View 2 RepliesParameter @UserType Has No Default Value?
Mar 30, 2011im using data bound item with my combobox and this error pop up.
Parameter @UserType has no default value.
when i set the value,it stated that
"The changes you requested to the table were not successful because they would create duplicate values in the index, primary key, or relationship. Change the data in the field or fields that contain duplicate data, remove the index, or redefine the index to permit duplicate entries and try again."
should i edit my usertype column in my database or there have another solution?
DB/Reporting :: Parameter Has No Default Value-Error
May 6, 2008I am working on a very simple application in Visual Basic 2008 Express.
The program has a Listview where I display the "DisplayName" field, the user clicks on a name and this should fill 3 text boxes. The code is:
strSQL = "SELECT FName, LName, DisplayName FROM tStaff WHERE DisplayName=@DisplayName;"
Dim conn As New OleDbConnection(strConnString)
[Code]....
This produces the error "Parameter @DisplayName" has no defaul value"
The value of the variable "strDisplayName" is correctly captured.
Set Default Value For A Unit Type Parameter?
Apr 12, 2011I want to include an optional parameter in a function statement that is of the type Unit. For example:
Public Shared Function NewTable(Optional ByVal TableWidth As Unit) As Table
Optional parameters require a default value, but I cannot figure out how to set a default value for a Unit type.
String Default Parameter Value After Conversion
Mar 9, 2012We have a legacy component that has been converted from VB6 to VB.Net.The VB component was called from an ASPX page using Request("param") to pass optional parameters to function calls. That means the value is null/nothing if the parameter is not present.The parameters were then added to an ADODB call of a store procedure using Parameters.Append.When used from VB6 missing, Request("param") values were coerced into empty strings when passed to the VB6 component. This meant that the ADODB call was satisfied (for required parameters).When the code was ported to VB.Net, the null Request("param") values are now passed as null values (VB nothing?) and Parameters.Append skips adding the value if it is nothing. This caused the stored procedure calls to break as a required param was missing.
If we change the component's function parameters to be optional and have paramname as string = "" defaults, will a null/nothing value be converted to an empty string, or is null/nothing treated differently to a parameter being simply missing?
Declaring Optional Controls - Parameter Must Specify Default Value
Jul 28, 2010I have a problem during defining a Sub routine in VB.Net. I am defining a sub routine which is as under
Private Sub ActivateControls(rdbutton as RadioButton, Optional txt as Textbox, Optional txt2 as Textbox)
End sub
When I call this sub routine It gives me the Error that Each Optional Parameter must specify a default value. So, Here I can't understand that what can be the default value of a textbox. What default value I can use here to remove this error.
Passing Null To An Optional Parameter With Default Value?
Sep 22, 2010I think this is a pretty basic question, but I just want to clarify. If I have a variable with a null value, and pass it as a parameter that is optional, will the parameter get the null value, or the default value?
dim str As String = "foo"
dim obj As Object
//call 1
[code].....
Insert Record Into Access Table - Parameter Has No Default Value
Jan 30, 2010I am trying to do an insert into a table called Policy. I keep getting an error that says parameter @Split has no default value. To try and resolve the problem, I set the default value of the split field (of type text) in the Policy table to "0" in Access 2007. I am passing in the value of a string "0" into the parameter before the insert statement executes.
Dim connection As OleDbConnection = PaulMeadeInsuranceDB.GetConnection
Dim insertcommand2 As New OleDbCommand(insertStatement2, connection)
connection.Open()
[Code].....
Specified For Parameter 'index' Of 'public Readonly Default Property Cha?
Nov 29, 2011Argument not specified for parameter 'index' of 'public readonly default property chars(index as integer)as char'. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code]...
VS 2008 System.Data.OleDb.OleDbException: Parameter _11 Has No Default Value?
Dec 27, 2009This is driving me mad! This is my code and I have attached my parameters below with my error. What on earth is wrong.
[Code]...
Access 2007 And Stored Procedure Error: Parameter [@MyNumber] Has No Default Value
Jul 27, 2010Access 2007 and Stored Procedure. I keep getting this error: Parameter [@MyNumber] has no default value.
[Code]...
Calling Function With Hex Parameter?
Dec 14, 2009The following two statements seem the same to me but the first throws a design time error, and the second does not. The first one is passing the first parameter in hex and the second passes the first parameter as its decimal equivalent.
Public Shared ReadOnly Test As New Guid(&HCC58E280, &H8AA1, &H11D1, &HB3, &HF1, &H0, &HAA, &H0, &H37, &H61, &HC5)
Public Shared ReadOnly Test2 As New Guid(3428377216, &H8AA1, &H11D1, &HB3, &HF1, &H0, &HAA, &H0, &H37, &H61, &HC5)
Here is the error associated with the first statement:
Error 1 Overload resolution failed because no accessible 'New' can be called with these arguments: 'Public Sub New(a As Integer, b As Short, c As Short, d As Byte, e As Byte, f As Byte, g As Byte, h As Byte, i As Byte, j As Byte, k As Byte)': Constant expression not representable in type 'Short'. 'Public Sub New(a As UInteger, b As UShort, c As UShort, d As Byte, e As Byte, f As Byte, g As Byte, h As Byte, i As Byte, j As Byte, k As Byte)': Constant expression not representable in type 'UInteger'.
How To Pass Parameter For Function
Dec 9, 2009I have a statement:
dat.XoaNhanVien(Me.dtgcapnhatthongtin.CurrentRow.Cells(1).Value, message)
That is a function for deleting info. Now I want to create other function and get above function to parameter. I mean:
Public Function func(Byval func as " What type can be ?")
.net - Sub / Function Array Parameter Altered?
Feb 6, 2012I have a Sub with an array of strings as parameter:
Private Sub des(ByVal array() As String)
Dim i As Integer
For i = 0 To UBound(array)
[code]....
When I call the function inside my main function , the value of str changes even if the array is passed to the function Byval
Dim str() As String
str = {"11111", "22222", "33333", "44444", "5555", "66666"}
des(str)
I tried making a copy of the array in the Sub, but it still changes in the main function
Private Sub des(ByVal array() As String)
Dim i As Integer
Dim array2() As String
[code]....
I read on a site that you cannot pass arrays ByVal ,is this true? If so , how should I proceed?
Add A Optional Parameter In Visual C# Function?
Mar 14, 2012How can i create a optional parameter in C# as we create in VB.Net
Public Sub Demo(ByVal a As Integer,Optional ByVal b as integer=3)
End Sub
I want to declare this in C#
[code].....
Argument Not Specified For Parameter Of Private Function
Mar 3, 2011I am using visual basic and trying to create function. I am getting this error:
"Argument not specified for parameter '_IsDayRateCheckBox' of private function CalculateParikingCharges(_HoursDecimal As Decimal, _IsDayRateCheckBox As System.Windows.Forms.CheckBox) As Decimal'.
This is the code.
Private Function CalculateParkingCharges(ByVal _HoursDecimal As Decimal, ByVal _IsDayRateCheckBox As CheckBox) As Decimal
This is how I call the function.
Dim HoursDecimal As Decimal
Dim AmountOwedDecimal As Decimal
If Not Decimal.TryParse(HoursTextBox.Text, HoursDecimal) OrElse HoursDecimal < 0D Then
ErrorLabel.Visible = True
HoursTextBox.Focus()
[Code] .....
Call Function Parameter Data?
Feb 3, 2012I have had some trouble on what to put inside the parameter named CallFWT as without it i would get a value of 0[code]...
View 2 RepliesCall VBA Function With Parameter Passing
Dec 29, 2008I wrote vba function in excel and I want to call this function in vb.net with parameter passing.
View 2 RepliesFunction That Can Receive Different Type Of Parameter?
Mar 10, 2011Is it possible in VB to have a function that can receive diffrent parameter, like a String or a Integer or a custom class type?
View 4 RepliesFunction That Takes A String As A Parameter?
Jan 1, 2012I have a function that takes a String as a parameter And in it I have variables, so if I call it it's like
Dim Text As String = MyStringConverter("Hello Mr. " & Name & " " & Surname "!")
Parameter Of Function/sub From A Fixed List?
Nov 28, 2011I have been a VB user for quite a long time starting from dos-basic types. But only now I encountered with a quite a newb problem :) I tried to search MSDN for it for about a few days and at the end I have to ask this question here because I could not find anything about it.
From time to time I use functions or subs where one parameter is a word from a defined list.
E.g.
private function my_function(byval THE_PARAM as string) as ..........
where THE_PARAM could be "work", "home", "bus", etc. 5 words all together.
How can I define a function so that when I use it on the text of the program I had a hint not just like "THE_PARAM is a string", but I had a choice of those pre-defined words, so I could choose a word from that list.
Pass A Form As A Parameter In A Function/Sub?
Mar 23, 2010Can I pass a form as a parameter in a sub like public Sub GetData(Byval Frm as form) and access its controls?I have few forms (you can say: FrmAccounting, FrmEngineering, FrmIT) with almost the same controls in each of them (txtEmployeeID, txtEmployeeName, optMale, optFemale etc), where no two forms are open at same time, and each of those forms have a Button which opens a new Form (you can say FrmCollectData) now I want to fetch data in FrmCollectData depending on which form it was opened from.. like if user was on FrmEngineering and it clicks button to open FrmCollectData.. form collectData fetches data from FrmEngineering Controls and if user was on FrmAccounting and it opens FrmCollectData, form Collectdata fetches data from FrmAccounting..
earlier, in VB6.. In one of the Sub written in frmCollectData I checked which form is opened by setting flags in each of forms (frmEngineering, frmAccounting etc) and then I passed the same form in a sub which writes data in frmCollectData controls.. but am not able to do the same in VB.NET.
Pass Array To Function As Parameter?
Dec 7, 2010I would like to pass array to function as parameter. Here is an example for variable that is not array:
[Code]...
Pass Control As A Parameter To A Function?
May 27, 2009i am designing an application in which contents of an excel file are displayed in the ListBox. i have created a class which contains methods for doing this. Statement used for function call is:
oSheet = obj.displayColumns(oWB,
Me.lbColumnNames)
[Code].....
line where i am getting error is underlined. Is it possible to send controls as a parameter ?
Properly Use Arrays As A Function Parameter?
Nov 9, 2011I'm currently working on a school project and I have stumbled upon various problems. I'm supposed to write a software tool based on a mathematical model.
In total, the model has 12 parameters and 2 constants used in it, so I figured it would be a good idea to store the parameters in 2 separate arrays - one containing 6 parameters which have to be entered by the user and another one with another 6 parameters which should only be changed in a settings kind of window for tweaking (they are set to default values provided by the model).[code]...
Sub / Function Array Parameter Altered?
Jan 20, 2012I have a Sub with an array of strings as parameter:
Private Sub des(ByVal array() As String)
Dim i As Integer
For i = 0 To UBound(array)
[code].....