Equivalent Of Access DMin And DMax Function In .net?
Jun 18, 2012what is the equivalent of Access DMin and DMax function in VB.net?
View 1 Replieswhat is the equivalent of Access DMin and DMax function in VB.net?
View 1 RepliesIn Access if a query were to compute the sum of different fields where there is a likelihood of one or more fields being NULL, you use something like NZ. Is there any equivalent Function for handling NULLs in VB .NET?
I'm use the code below to retrieve the SUM of the column "BudgetAmt" from my DB but get InvalidCast Exception was unhandled error because the BudgetAmt and/or AllocationPersonnel holds no data:
Dim strSbCode As String = cboSubSubOrg.SelectedValue.ToString
Dim budgetYr As Integer = CInt(cboBudgetYr.Text)
personBudget = CDec(transDetailsDT.Compute("SUM(BudgetAmt)", "FundSource = '02101' AND DataSource = 3" _
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VB has a function InputBox() that will prompt the user to enter a single value, then click OK. Is there a parallel functionality in ASP.NET, that will get the browser to pop up some kind of input box to return a single value? If not, how do you recommend I achieve this effect?
View 3 RepliesI have VBA as a namespace in the vb6 code and i would like to know if there is a way of making .net know what there is, is there a specific application namespace? I have been guessing but haven't had any luck (the beauty of the help boxes, if only i knew more of the language)
If you're not living on the edge, you're taking up too much room
Tell vb.net equivalent of following method:
CODE:
Which on build in visual studio 2005 gives an error.
I'd like to know if something like this pseudo code:
myVar = "functionName"
call someObject.(myVar evaluation)
which would then be equivalent to:
call someObject.functionName
is possible in VB. I know this is done in some other languages using a GetProperty method.
What is the C# equivalent function of IsNumeric() in VB.. If possible include an example.
View 4 Repliesim trying to port a small bit of code from c to vb.i dont know if this is c# or objective c or what.anyway, a line of the source i need to port is
for x = 1 to 31
a$ = LTrim(Str$(x))
i know what to do for the first line, but the second line doesnt make sense to me. what is LTrim supposed to do to x? also, what is the equivalent function for LTrim?
What is the C# equivalent of this VB code?
Private Declare Auto Function InternetSetOption Lib "wininet.dll" (ByVal hInternet As IntPtr, ByVal dwOption As Integer, ByVal lpBuffer As IntPtr, ByVal lpdwBufferLength As Integer) As Boolean
Does VB.NET have a function to get the quotient like you can in excel.
Quotient(12, 6)
tell vb.net equivalent of following method:
C# Syntax
public class RecentPosts : Control
{
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As a non .net programmer I'm looking for the .net equivalent of the old vb function left(string, length). It was lazy in that it worked for any length string. As expected, left("foobar", 3) = "foo" while, most helpfully, left("f", 3) = "f".
In .net string.Substring(index, length) throws exceptions for everything out of range. In Java I always had the Apache-Commons lang.StringUtils handy. In Google I don't get very far searching for string functions.
Edit:@Noldorin - My first encounter, although it took me several seconds to do the same in c#:
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Note the static class and method as well as the this keyword. Yes, they are as simple to invoke as "foobar".Left(3). See also c# extensions on msdn.
In cell A1 of Sheet2 I have the following text [code]how to I get VB to recognize that the 4<sup>th</sup> character of the string has character code 63?
View 3 RepliesI have an Excel VBA function that takes a number of optional parameters, including an optional Range:
Function DazBeta(A As Range, Z As Range, _
B As Integer, _
Optional Freq As Integer = 1, _
Optional c As Double = 0, _
Optional r As Range, _
Optional Pct As Boolean = True, _
Optional Label As Integer = 1)
I am translating to VB.NET, and it's the optional Range that is giving me grief because VB.NET does allow optional Ranges. Or rather, optional parameters must provide a default value. What is the recommended way to change the VB.NET function signature so that the code is callable from an Excel cell as a UDF? (The VB.NET implements a UDF, the assembly is registered as a COM server, and the Excel spreadsheet is told of this server and type library, allowing the VB.NET code to be called from an Excel spreadsheet cell.) I have other compilation problems, so I have not been able to explore this. I am thinking that accepting an optional Object (default value Nothing) might work and then I could cast the Object to a Range. Alternatively, if there were a default value that could be specified with an optional Range, that would work, too.
This question is similar to How to emulate MySQLs utf8_general_ci collation in PHP string comparisons but I want the function for vb.net rather than PhP.Recently I make a lot of supposedly unique key.Some of the keys are equivalent under UTF8 unicode collation.For example, look at these 2 key:
byers-street-bistro_38.15-79.07
byers-street-bistro_38.15-79.07
If I paste that into front page, and look at the source code you'll see
byers-street-bistro__38.15_-79.07
byers-street-bistro__38.15_-79.07
Note: In stack overflow they still look different.I know it's not the same. I guess even in stack exchange it doesn't show. Say I have 1 million such records and I want to test whether 2 string WILL be declared the same by MySQL UTF8 collation. I want to know that before uploading. How do I do that.So vb.net think that those are different keys. When we created mysql query and upload that to database, the database complain it's the same key. Just one complain and the upload of 1 million databases will be stuck.We don't even know what the hell is ? Where can we look that up anyway?Anyway, I want a function that when given 2 strings will tell me whether they will count as the same or not.If possible we want a function that convert strings into their most "standard" form.For example, seems to encode nothing and the function would recoqnize all those nothing character and eliminate that.Is there such thing?So far this is what I do. I need something more comprehensive.
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[URL] the CodeContextObject property returns a reference to the object from which the currently executing macro or VBA procedure was called. This may or may not be the active object.What's the equivalent in C# or VB.NET ?
View 1 RepliesI was simply wondering if in VB.Net there is a shorthand equivalent to this kind of C# including the private setter:
public string Test { get; private set; }
I want to execute the code that is passed as a string to my function, the code will be passed at runtime. This is an example code that may be passed as a string to my function. p is a dataset, which is declared and has some values, this code is executed in a asp.net page
p.Tables(0).Rows(0)("disp_status") = "Approved by CEO";
p.Tables(0).Rows(0)("status") = "Approved";
Session("fnc") = "generate po";
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I just want to know if there any equivalent event (ADO. NET VS 2008) event as in MS ACCESS Form's OnCurrent Event.
The reason is I like to make some calculations based on some data bound controls with current datarow data when user clicked a row in DataGridView (or by using bindingNavigator). I've tried with DatagridView's RowEnter event. But some Data bound controls are not yet reflect the data of current datarow when that evet was fired.
In MSDN Help File: It says "RowEnter Event: Occurs when a row receives input focus but before it becomes the current row. "
Possible Duplicate: Convert Null to zero in access databaseI'm using Microsoft Visual Web Developer 2010 Express to create ASP/VB.NET page to connect with a Microsoft office Access 07. Here's my issue:
View 2 RepliesSo, I am reorganizing a winform application I wrote to make it more readable and maintainable. The previous structure I used had:
1- a login form with some connection objects
2- an import process start form with some import objects
3- a log writer class that receives data from the import process and writes a log file at the end of the import process
The code quickly got too messy, so my goal now is:
1- a login form with only form events
2- an import form with only form events
3- a class with all the functions
Basically, my class with all the functions (3) looks like this:
Public Class MyProgramMainClass
Public Function test()
Dim testing As String = "test"
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I need some further help regarding this thread [URL]..I use this Query
SELECT Kunder.anstnr, Kunder.FirstName, Kunder.LastName, GetJoinNames([Bestn.Anstnr]) AS Weeks, Bestn.Manad
FROM Kunder INNER JOIN Bestn ON Kunder.anstnr = Bestn.Anstnr GROUP BY Kunder.anstnr, Kunder.FirstName, Kunder.LastName, GetJoinNames([Bestn.Anstnr]) And this function in access and it works quite well
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I'm trying to call a Dll function which looks like this (in the C/C++ Dll):declspec(dllexport) void execute(char** ReturnMsg, char* serverAddress, char* commandLine)
The VB 'wrapper' function looks like:
<DllImport("TPClient.dll", EntryPoint:="execute", CallingConvention:=CallingConvention.Cdecl, CharSet:=CharSet.Auto, ExactSpelling:=True)> _
Public Shared Sub tg_execute(<Out()> <MarshalAs(UnmanagedType.LPStr)> ByRef returnString As System.Text.StringBuilder, _
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I downloaded VB Express 2010 and trying to access a variable array I created in the main form1 private section in another form / function. [code]...
View 3 RepliesI have a recursive function in this function i am adding some value to path variable here i want to acess this value outside of function for this what changes i will do in this function.
Private Sub GeValuePath(ByVal ParentID As Integer)
Try
dim path as string =""
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I work with Access and VB6 for quite a while. I have read the thread of Phillip Maerz, but there was still the problem that the Function names had to be written in the delegate array. Thats why I started a new thread.Following Problem:How can I call a funktion dymacally, something like thisPublic Function Test1()Returns 1End Function Public Function Test2()Returns 2End Function Sub Main()dim i, r as integeri=2
View 5 RepliesThis is my function:
Public Function DBConnection(ByVal path As String)
' This function makes the database connection and returns the object
' to reference it.
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As you can see, I want to initialize a database connection and return it so I can use it in my forms. This function is in a module and my variables are as follows:
Public cn As OleDbConnection
Public cmd As OleDbCommand
Public dr As OleDbDataReader
But I'm not sure how I can use this in my forms, do I just call the function DBConnection and then proceed with my SQL statements? Also, I need some opinions. My application relies on a MS Access database. Is it better to initialize the connection on Form_Load and then close the connection when the user closes the program, or open and close the connections as the queries are run? I'm planning to use some database queries on multiple forms hence the reason I was putting it into a module, but I'm not 100% on how I should proceed with this.
how could i build a search function button which will access my database? as the search item match the database , there must be a window pop up to show the searched data from the database.
View 7 RepliesI work in MS Visual Studio 2008, I have a VB.NET Solution which has three Projects, BusinessObjectLibrary (object properties), DataAccessLibrary (object functions such as selectAll, exportToExcel) and WindowUserInterface (UserForms c/w Controls)In my WindowUserInterface (project) I have a form called "rolFormGrid.vb", on this form, I have a DataGrid that gets filled with a function called "selectAll" when the form is loaded, I also have a button that calls the function "exportToExcel" and I have a Progress Bar called "rolProgressBar" ***.
In my DataAccessLibray (project) I have a class called "ROL_Adapter.vb", and in this class resides the function called "exportToExcel" which has all the code to create an Excel Workbook. When this function is being called, it can takes close to a minute to export to excel. We all know how users can be impatient if they do not see anything happening in the foreground when an application is working, that is the reason I want the progress bar.
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I am trying to duplicate the Match function in excel for use in Access. Public Function Match(T() As Double, TTM As Double) As Double ReDim T(LBound(T) To UBound(T)) As Double
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