I am working with some code that uses array lists and I am using some of these to pass data back and forth like this: whatFile = (sideLookUp(x)) and its working, BUT when I turn this code into a sub/function then I call it I get problems, like double to string errors, even though its all set to double.
[Code]...
I'm attempting to pass in a collection of dates to a T-SQL 'IN' clause via a date array (see below for how data is collated).
'Workout weeks difference between start and enddate
Dim wksDifference As Integer = CType(DateDiff(DateInterval.WeekOfYear, bookingStartDate, bookingEndDate), Integer)
[code].....
I'm wondering if this sort of thing is possible in VB.NET.. say I have a routine which accepts an integer array, defined as:
Sub WriteTable(iRows As Integer, arrColumns As Integer())
The arrColumns parameter is an integer array of column widths.
I can pass a value by doing this:
[code]....
From what I understand, when you use AddHandler you're not actually calling a Sub, so you can't pass a parameter. I'm confused on what to do though about this. I've just populated a DataGridView and added a button to it in the codebehind. I'm then using an AddHandler to add a click event to the button. So when I get to the click event, I need to be able to access to the datagridview because clicking the button takes data from the datagridview and loads it into excel. What would I do about this. This is my Method where DataGridView was just populated
Dim btn As New Button
btn.Name = dgv.ToString()
btn.Location = New Point(0, 0)
[code]....
have a subroutine which parameter is an array like below:
Private Sub DoubleArrayValues(ByVal arr() As Integer)
Double the values.
[code].....
I have this in VB6
Private Sub LoadDaysOfMonth(pintWhatMonth As Integer, pctrlWhatControl As Control)
Dim NumOfDays As Integer
Dim i As Integer
Select Case pintWhatMonth
[code]....
Originally Posted by Error
'items' is not a member of Systems.Windows.Forms.Control
It works just fine if I use pctrlListBox As ListBox or if I use pctrlCombo As ComboBox, but I need to be able to use both with the same routine.
(PS: Yes, I do have a leap year check in here which I took out as it is not germine to my translation problem.)
(PPS: Using a control such as the monthview or datepicker is not an option.)
I'm having trouble passing an array of a user defined type to an procedure in a COM DLL. The prototype for the procedure i'm using is this:
HRESULT STDMETHODCALLTYPE GetData(
/* [in] */ DWORD dwCount,
/* [size_is][out][in] */ CSimData *puData) = 0;
CSimData is a structure which is also defined in the interface.
I'm trying to call it with the following code but am getting an exception:
Dim temp(1) As MACHPLANTSIM18Lib.CSimData
temp(0) = New MACHPLANTSIM18Lib.CSimData
temp(1) = New MACHPLANTSIM18Lib.CSimData
[code]....
The exception i'm getting is "COMException was unhandled - Exception from HRESULT: 0xC0000005" It looks to me that the array isn't passing properly to the COM function. I'm able to send a single object, but when I do an array of objects I get this exception.
I have populated an array.
Button1 click event
Dim array1 (3,3) as string
array1 (3,3) = "BLA"
End Event
Now, in the same class, I have another button.
When I click on this button2, i want to use this array to stream files to textfile.
The problem is that I cannot pass data from button1 click event to button2, as I have to declare the array again, and that causes array to lose data on button2 click.
If I however, declare array on top of class, I get a funny error sying out of index range etc.
how should i initialize the string array in this procedure call
vb
Private Sub SetAddres(Optional ByVal Addrvalues(4) As String ) End Sub
how to initialize it with values and also with empty strings or null values
I am calling a crystal xi report from a windows form and passing 2 date parameters and a customer name. In some cases this customer name contains '&' eg Brown & Williams
In these cases my report fails and errors. if the name doesn't contain '&' it works. How can I pass the parameter with a & in it ?
I created a dataset that is getting data from an access database. Now i would like to go further and make the dataset query accept a parameter from a form datepick value. the query in my table adapter I have changed it as follows to accept a parameter on date1.[code]The code I am using in my form is as below. I get a null reference exception on the second line(Object reference not set to an instance of an object). it seems as if my selectCommand is bringing nothing.[code]
View 4 RepliesI have a bound DataGridView (dgvBuild) that contains data based on a "ProductID" that is derived from selecting the value from a ComboBox. How do I pass the ComboBox Value to the DataAdapter to retrieve records to reload the dgvBuild? Below is the code for theDataAdapter.This is the line that was created when I bound the DataGridView to a DB Table.
View 8 RepliesI need to pass an event as a parameter to a function and I'm wondering if there is any way of doing this.The reason why I need to do this is because I have a sequence of two lines of code that is littered all over my program, where I dynamically remove the handler to an event, then set the handler again. I'm doing this for several different events and event handlers, so I've decided to write a function that does this. As an example, let's say I have a combobox in my code called combobox1, and I have the handler called indexChangedHandler. In several places of my code, I have the following two lines:[code]Now, I don't want to keep on repeating the above two lines of code (or similar) all over my program, so I'm looking for a way to do this:[code]So far, the "evt as Event" part of the argument of the setHandler function is giving an error. Any ideas on the right way to do this will be very welcomed.
View 2 RepliesI need to pass an event as a parameter to a function and I'm wondering if there is any way of doing this.
The reason why I need to do this is because I have a sequence of two lines of code that is littered all over my program, where I dynamically remove the handler to an event, then set the handler again. I'm doing this for several different events and event handlers, so I've decided to write a function that does this.
As an example, let's say I have a combobox in my code called combobox1, and I have the handler called indexChangedHandler. In several places of my code, I have the following two lines:
RemoveHandler combobox1.SelectedIndexChanged, AddressOf indexChangedHandler
AddHandler combobox1.SelectedIndexChanged, AddressOf indexChangedHandler
Now, I don't want to keep on repeating the above two lines of code (or similar) all over my program, so I'm looking for a way to do this:
Private Sub setHandler(evt As Event, hndler As eventhandler)
RemoveHandler evt, hndler
AddHandler evt, hndler
End Sub
so that everywhere where those two lines of code(or similar) occur in my program, I can just replace them with:
setHandler(combobox1.SelectedIndexChanged, AddressOf indexChangedHandler)
So far, the "evt as Event" part of the argument of the setHandler function is giving an error.
P.S I've asked this question on a couple of other forums and keep getting asked why I would want to set the handler immediately after removing it. The reason is because dynamically adding an event handler n-times causes the handler to be executed n-times when the event occurs. To avoid this, i.e to ensure that the handler is executed just once when the event occurs, I first remove the handler each time I want to add the handler dynamically.
You might be asking why the handler would be added several times in the first place... The reason is because I add the handler only after a particular event, say E1, in my form has occured (I add the handler within the handler of event E1). And event E1 can occur several times within my form. If I do not remove the handler each time before adding it again, the handler gets added and thus executed several times.
Whatever the case, the processing occuring within the function is not of ultimate importance to me at this time, but rather just the means of passing an event as a parameter.
I'd like to create a function myFunc with one parameter, which is a delegate. I should be able to call it with a delegate as parameter.E.g.[code]But how do I code myFunc, in other words, how do I enable myFunc to have it passed a delegate so that it can be called using myFunc(addressof test Func)?
View 4 Repliessample code for passing parameter to crysatl report dynamically in vb.net ...?
View 2 RepliesI wrote vba function in excel and I want to call this function in vb.net with parameter passing.
View 2 RepliesI am getting error when debugging a project. The error is as below,
"FormatException was unhandled
String was not recognized as a valid DateTime."
Highlighting the following line
[code]...
Assuming I have the following code that is iterating over controls in a panel setting various control information.Private Sub BindDataFields()
[Code]...
Is there a way to pass an optional parameter to a webservice, instead of having to overload the method?If the webservice user is accessing the webservice directly, I want to do ActionA, if the user is accessing the webservice through my web interface, I want to do ActionA + ActionB.
View 1 RepliesCan't seem to figure out why this is not working.
Dim Myspcmd As New SqlCommand("spDataImport", myConnection)
Myspcmd.CommandType = CommandType.StoredProcedure
Myspcmd.Parameters.Add(New SqlParameter("@FileName", Data.SqlDbType.NVarChar, 100)).Direction = ParameterDirection.Input
Myspcmd.Parameters("@FileName").Value = "Import_File.dtsx"
myConnection.Open()
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I'm calling unmanaged C++ Dll function from VB.Net project by usin dllimport attribute like this;
<DllImport("Injection.dll", CallingConvention:=CallingConvention.Cdecl)> _
Private Shared Sub Injector(ByRef Client As String, ByRef Dll As String)
End Sub
I am using following code to connect to my database.
Dim conStr As String = "Data Source=.SQLEXPRESS; ![enter image description here][1]
AttachDbFilename=|DataDirectory|dbTest.mdf;
Integrated Security=True;
User Instance=True"
Dim sqlQry As String = "SELECT * FROM [tblTest] WHERE ([Name] = @Name)"
Dim dAdt As New SqlDataAdapter(sqlQry, conStr)
Dim dSet As New DataSet()
Then filling adapter with
dAdt.Fill(dSet, "tblTest")
And then I can use the data the way I want.
My question is: How to pass the value of parameter that user will give through a text box on my webform.
Dim sqlQry As String = "SELECT * FROM [tblTest] <b>WHERE ([Name] = @Name)
I mean how to pass the parameter value to my query?
Im using a datatable and i am trying to do a insert statement into an oracle database by passing selected values from the datatable to the insert statement via parameters. I'v traced the parameter collection and it has the correct number of parameters to be passed but it is giving me an error saying a value being passed in is null but it is not, during debug you can clearly see the value of the parameter is not null.
Dim FuelInsert As String = "INSERT INTO table (COMPANY, TRAN_DATE, GAS_GALLONS,DSL_GALLONS,DEF_GALLONS,KER_GALLONS,E85_GALLONS,DDS_GALLONS,WDS_GALLONS)" _
+ "VALUES(:Company, :Trans_Date, :Gas_Gallons, sl_Gallons, ef_Gallons, :Ker_Gallons, :E85_Gallons, ds_Gallons, :Wds_Gallons)"
[code]....
I just wanted to know if there was a easier way of creating the parameters or if i am missing something simple that causing the values of the parameters being passed to get mixed up. The code retrieves the values i need and builds the parameter collection of 0-8 nodes which is correct.
I want to pass a date as parameter in vb to query the data from the table.If I hardcore the value in the query it works fine for me, but if I pass it as parameter to query, like I am getting the data from edit text and trying to send that as a parameter, this does not work.
SELECT *
FROM VehicleAnalogParamDownload2
WHERE Vapd2_Date between 'From_date.Text' And 'To_Date.Text'
I seem to be passing the parameter to the report (I placed the parameter field itself on the report to verify this) but it does grab any information based on this parameter. All of the fields appear with no data but the parameter is showing up correctly.Yes, I have verified that the parameter is in the select statement of the report.The report also is exporting correctly but still without the data.
Below is the code I'm using:
CR Loading
Try
Dim cryRpt As New ReportDocument()
Dim reportPath As String = "MyReport.rpt"
cryRpt.Load(reportPath)
[code]....
In my VB.NET project I wanted to run a JAR file in a separate thread. Now the question : Is it possible to pass parameters to a JAR file during run time from VB.NET??
View 1 RepliesSo for instance I have this method: LoadFunkyInfo(byval funkyData as string) And I pass it something like this:
LoadFunkyInfo(giantTable.Rows.Item(0).Item("blahName")). Should I do this instead?
dim foo as string = giantTable.Rows.Item(0).Item("blahName")
LoadFunkyInfo(foo)
I read somewhere long ago, that it's better to assign the method to a variable and pass that variable to a method, as opposed to passing the method as a parameter. Is that still true? Or true at all?
I am using following code and trying to get data by given parameters. I donot know how to pass the parameter value to my query.
[Code]...
The case is that I have two comboboxes (country and state) and a simple code to populate the state combobox accordingly depending on the selected country. Ok this is simple and easy, and this code is within the country combo change event.The case is that I have more than one pairs of those comboboxes and I wouldnt like to repeat all the populate code into every country combo change event.Actually I would like to have only one function and just call it passing as parameter a reference to the combobox I want to populate. Then I could use that reference into the function.
View 10 Replies