I have a list box that allows multiple values to be selected.Here is my query for my gridview
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then before the query is run i use to subtract the final , so i dont get an error and i have to use textbox1.text in my query and not the parameter. that is slower and sql injection,
'--------------------------------------------------------
'First
'--------------------------------------------------------
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I am working on a project where I have to import a DLL file into a VB project that was created a few years back. The DLL was created in C++, and looks like:
void CoordinateConversionService::convert( SourceOrTarget::Enum sourceDirection, SourceOrTarget::Enum targetDirection, CoordinateTuple* sourceCoordinates, Accuracy* sourceAccuracy, CoordinateTuple& targetCoordinates, Accuracy& targetAccuracy )
I am an intern at my job, and I haven't had to use this yet, so my understanding is extremely limited, along with my usage of VB (I'm a C++/C# guy). Here are a few questions:
1) Looking at Dllimport, it seems like the last part outside of the parameters is a return type. Example code from another site:
<DllImport("advapi32.dll")> _
Public Function GetUserName( _
ByVal lpBuffer As StringBuilder, _
ByRef nSize As Integer) As Boolean
Is "As Boolean" the return type? If so, I tried using "Sub" and it says "Keyword does not name a type." Hence why I looked into declare, because it seems I CAN return void/sub as a return type.
2) Trying to use the types "CoordinateTuple" and "Accuracy" give me problems, saying that they aren't defined. How do I get around this since I don't think I can really define them, and what about the fact that they're pointers?
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What needs to be done to properly declare the function using vb.net
I am using the command
Public Declare Sub subname Lib libname ()
g,
Public Declare Sub test_dllsub1 Lib "C:/path/dllname.dll" (ByRef arg As Double)
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I am using vb .net & crystal report 11 , I m using 4 parameters in crystal report 1 st is "tcomp" , 2 nd is "tled_name", 3rd is "tdt_form", 4th is "tdt_to", the problem is, when I use first 2 parameters it is working well but when I add other last 2 parameter it's shown error message:
' Declare the parameter related objects. '
Dim crParameterDiscreteValue As ParameterDiscreteValue
Dim crParameterFieldDefinitions As ParameterFieldDefinitions
Dim crParameterFieldLocation As ParameterFieldDefinition
Dim crParameterValues As ParameterValues
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I'm fairly new to learning visual basic. I'm trying to create a program that dynamically generates a EXE file that performs mouse movements and keystrokes. To dynamically generate EXE files, I am using the CODEDOM API for Visual Basic.
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Marshal attributes to be passed as an argument in this Declare statement? [code]...
View 3 RepliesHere's a simple code snippet of a larger function as an example.
Using conn as New SqlConnection("conn string")
Using find as new SqlCommand("ExampleProc",conn)
Dim rParam as new SqlParameter("@RESULT",SqlDbType.Int)
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I know the Output parameter is returned after the SqlDataReader is closed. From what I think I know, the Using statement will call .Dispose on the SqlDataReader, so will that basically wipe out the Output parameter? If so, what is the best method to call a SqlDataReader that also contains Output parameters that closes and disposes everything correctly? Let me add that based on what I've read you only have access to the Output parameter using a SqlDataReader after you call .Close on the SqlDataReader.
I'm trying to create a parameter insert statement for an SQL server Db. when i've used similar code for an access db, it works fine. can anyone tell me what i'm doing wrong? Public Sub SubmitMyData(ByRef getArray)
Dim MySQL As String = "INSERT INTO WebSurveyResults(Q1,Q2,Q3,Q4,Q5,Q6) VALUES
Dim myConnString As String = "Data Source=jasonwucinski1.db.1111111.hostedresource.com; " _
& "Initial Catalog=jasonwucinski1; User ID=jasonwucinski1; Password='myPW';"
Dim thisConnection As New System.Data.SqlClient.SqlConnection(myConnString)
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I am using VB2008 and SQL Server to populate a DataGridView from a SELECT statement. The SQL SELECT uses a parameter to access the requested row, but I get an error "Must declare the variable '@actionid'." Where and how do I declare @acionid? Here is my code (the error occurs on the Fill command):
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I have bee trying to figure out, how to match generic types, without the type parameter in a IF-ELSE statement - heres what i mean:
<P>IF TypeOf(Obj) Is GenericTypeExample(Of ???Any???) Then</P>
<P>End if</P>
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
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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 going to crazy: I tried this code it works well with me
Code:" Delete From TBinMaterial where inMaterial = '" & TextBox1.Text & "'"I tried this code too. It works well with me Code:"INSERT INTO TBinMaterial(inMaterial)" & "values ('" & ListBox1.Text & "') "But this code it doesn't work Code:" Delete From TBinMaterial where inMaterial = '" & ListBox1.Text & "'"and this code too doesn't work Code: " Delete From TBinMaterial where inMaterial = Last(inMaterial )
i'm doing a desktop application using VS2005 with MSSQL 2005. i have a problem with the where clause in the update statement while selecting the listbox item. this is the code for the listbox in load page:
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and this is my update query in the delete button event handler: mySQL = "update Appointment set recordStatus = 'deleted'" how do i put in the where clause in when i have 4 columns in the listbox? so can i do this with listbox or have to do with datagridview?
To do is stop the last line, begvalue = begvalue - depreciation, from showing up in the listbox. I tried an if statement but that doesn't work
Depreciation to a Salvage Value of 0. For tax purposes an item may be depreciated over a period of several years, n. With the straight-line method of depreciation, each year the item depreciates by 1/nth of its original value. With the double-declining-balance method of depreciation, each year the item depreciates by 2/nths of its value at the beginning of that year. (In the last year, it is depreciated by its value at the beginning of the year.) Write a program that performs the following tasks:
Requests a description of the item, the year of purchase, the cost of the item, the number of years to be depreciated (estimated life), and the method of depreciation. The method of depreciation should be chosen by clicking one of two buttons. Displays a depreciation schedule for the item similar to the schedule shown in Figure 6.23. Figure 6.23. Depreciation schedule for Programming Project 7. [URL]
This is the code I have so far:
Dim yearpurchased, cost, life, depreciation, begvalue, total As Double
Dim item As String
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I need to get the last two numbers on the bottom right of the table.
Following code doesnt work and raise error "A parameter is missing. [ Parameter ordinal = 1 ]".What s wrong with it?I am developing pocket pc application in vs 2008 and sqlce 3.5 sp1.
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I'm Trying to Call the Stored Procedure which has one input Parameter and one output parameter . VB.net code is below
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I 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 RepliesIs it possible to make a procedure have a single parameter but the values for that parameter are more than one? I have this procedure:
Public Sub autoComplete(ByVal cboCombo As ComboBox)
With cboCombo
.AutoCompleteMode = AutoCompleteMode.Append[code]....
Now I was wondering if there is a way to use it like this:
autoComplete(myCombobox1, myCombobox2, myCombobox3)
Or can I use a procedure like this with 'With...End With'?
I have a method which requires a parameter to be passed in. I would like to use the Addhandler to call the method through a dynamically created button control's click event.
When I include () in the AddressOf, VS complains: 'AddressOf' operand must be the name of a method (without parentheses).
When I exclude the brackets, VS complains: Method '...' does not have a signature compatible with delegate...
My code:
CODE:
One of the things that I think is really cool about VB.NET is how built-in functions and subs have extra help text in their ToolTips like "Expression: String expression to search for replace string." as well as the usual "Replace(...parameters...) as string" text. So are the pop up boxes with things like "CompareMethod.Binary" or "CompareMethod.Text." And finally I like how some functions and subs have different sets of parameters for the same routine. For example, New FileStream() starts with either a path (string) parameter or handle parameter, but none of the 15 sets of parameters contain both path and handle parameters. Is there a way that I can set up the classes and functions I write to use these things or do they only work with built in classes and functions? If there is a way, what are the proper names for them so I can look them up in the VS/VB documentation? I would be happy enough if someone would give me an example of them, but it would be nicer if I could go through the documentation and find out if there are other cool things that are related or near by.
View 3 Replieshave an idea on what i am doing wrong here:
Compiler Error Message: BC30455: Argument not specified for parameter 'dteRDate' of 'Public Sub New(strOName As String, strOAdd As String, intOPhone As Integer, strVer As String, dteRDate As Date, dteWDate As Date, strONote As String, strOrName As
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I have a vbscript that runs under asp page. I need convert the code to VB.NET
SET objCommand = Server.CreateObject("ADODB.Command")
objCommand.ActiveConnection = Application(DB)
With objCommand
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What is the VB.Net that will do exactly the vbscript does? I like paramer(0) and 1 and 2 etc since I don't need to define the parameter(0) as integer or varchar etc. I remembered I have discuss this before and it is possible to do in VB.NET?
See
Public Class Form1
Dim sql As String
Dim conn As New OleDb.OleDbConnection
Dim da As New OleDb.OleDbDataAdapter
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The problem, The INSERT statement works fine in the form load but not in the button click event?
I was convinced that If <expression> Then <statement [:statement]> Else [statements] in concrete form of If a = b Then SayHello() Else SayBye() End has sense. I read article on msdn on If-then-else, but I forgot why I was reading, so I concluded, that snippet above means this
If a = b Then HelloIsSaid : IsNotEnded Else ByeIsSaid : IsEnded But I have tested it now, and I see, that Else without statement is nothing more than decoration. It would be pretty good if it had function I described. Do you think its good request? Or do you know any circumstance where this Else has some function?
y friend and I are re-learning Visual Basic, and we are stumped on this bit of code.
For intAsterisks As Integer = 0 To intLine - 1
lblAsterisks.Text = lblAsterisks.Text + "*"
Next
I have the following SQL:
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I want to put it (the select count statement) in this LINQ statement so I can get the sales count in my linq statement: Dim TheLeads = (From L In DB.Leads Where L.IsDeleted = False Select L).ToList() Is this possible to do in LINQ?
If I set a ListBox.Height = ListBox.PreferredHeight when the control is hidden and IntegralHeight = True, then set it visible:
a) Actual Height reduces by typically 3-5 pixels after redraw (but not 1 pixel per item).
b) PreferredHeight does not not appear to give the correct integral of item heights.
Is there a way to make ListBox calculate the correct integral Height before the ListBox is made visible, so it can be correctly pre-positioned from bottom edge?
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ListBox1.Visible = False
ListBox1.IntegralHeight = True
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add an if statement and an exit statement to my do loop that exits when my future value (FV) is greater than 1000, then to change the exit statement to a continue statement so my loop will continue even though my fv is greater then 1000, point is to get this to run even though my if statement doesnt do anything. problem something wrong in my code and an exception error (xception of type 'System.OverflowException' occurred in mscorlib.dll)
so can someone show me where or why I have an error is, what am I overthinking now! I could use a hint, OMG i could use a tutor for that matter
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