Time To Call A Function To Change Data Being Returned From Database?

Jun 28, 2009

I have two functions written in VB.NET:

1) The first function (call it GetValues()) returns values in a SQL database as a list via a stored proc. One of the fields is DateTimeSubmitted. All of this data is displayed on my webpage using a repeater control. It works fine.

2) The second function (call it NiceDate()) I created to change the DateTimeSubmitted to a nice date such as "one minute ago" or "yesterday".

My problem is I have no idea which is the best part of the process to do the conversion (at point of data extraction or in pageload etc.) or in fact how to do the conversion.

View 4 Replies


ADVERTISEMENT

Accessing Cursor Data Returned By PL/SQL Function?

Jul 16, 2009

I am calling an Oracle function PKGDummy.F_EMPDATA using vb.net.

View 1 Replies

VS 2010 : Convert A DLL Function Call Which Has The Callback Function Routine Called Within The DLL Function Call?

May 25, 2012

I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:

typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);

[code]....

how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.

View 15 Replies

Call A Function On CD Change?

Jan 26, 2010

I've got a program that has a text box with a list of files that are on any removable media. Suppose you launch the program and there's nothing in your CD-ROM drive. Right now, you'd get nothing, and you'd have to insert a disc and click a "refresh" button, which triggers a function that repopulates the list.

Is there any good way to call this function on the event that the user inserts/removes a CD-ROM from any CD-ROM drive? Also, inserting/removing external disks and flash drives? Without having to constantly poll the drives. Floppy disks aren't important to me.

View 1 Replies

No Data Returned After Updating Database

Oct 6, 2011

I'm sure im just making a simple mistake some place but i just cant find it. I have datatable which I can and can make changes, save back to the database just fine. But if I reload the data after updating, no data is retrieved from the database. But if I stop debugging completely and then start again, it loads just fine...until i call Update.

Here is some code I am using for testing purposes.

Private myDataSet As New DataSet
Private conn As MySqlClient.MySqlConnection
Dim myDataAdapter As New MySqlClient.MySqlDataAdapter

[Code]....

View 4 Replies

Function To Change Number To Time?

Apr 13, 2012

Currently just started working with VS2008 I have a SQL script that is returning a number looking time in one of my columns (50625) which is 5:06:25 What I would like some help with is creating a function that would take this value and change it to a real time at some point I will need to do further calculation on these times so I need to be able to add or subtract these results.[code]...

View 3 Replies

Call A Delete Function For Different Database Purpose?

Apr 6, 2011

How to create a delete in used to delete my sql database from different database without decalre one by one in vb applcation

View 1 Replies

Call Function Parameter Data?

Feb 3, 2012

I 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 Replies

Database - Running SQL Query From Module With A Function Call From The Form?

Jan 28, 2010

I have a form set up where I want to run the function PopulateGrid on it's Form_Load event. I have initialized the DB connection as follows:

Private Sub Main_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
LoadConfigFile()
cn = New OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" & config("DatabasePath") & ";")
cn.Open()
End Sub

Now, I want to run the PopulateGrid function directly after I connect to the database as shown above. I'm confused as to how I'd use a database query in a module when the database is initialized in my main form. Would simple setting the variable cn to public work?

View 1 Replies

Debugging Execution Of Database Function Call To Remote Sql Server?

Sep 14, 2011

Working in VWD 2010 Express I have an aspx.vb file with the following connection string:

Protected Function getPasswordLength() As Integer
Dim conn As New SqlConnection("Data Source=localhost;database=MyDB;Integrated Security=true")
Dim cmd As SqlCommand = conn.CreateCommand()

[code]....

This works when the code is on the web server / which is collocated with the SQLServer.However, when I want to debug, I have to copy to the server. I would like to be able to "debug in place" on my development machine and only copy files to the production machine periodically. Technically the production machine is not in production at the moment, but that's beside the point.Anyway, I followed the following instruction: [URL] I can now see the remote database, functions, etc. on the other machine (from the VWD running on the development machine). However, I thought I should then be able to execute this same code locally on the development machine using ctrl-F5, but I get the following error:

**Server Error in '/' Application.A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)**

View 1 Replies

Call Function - Invalid Attempt To Read When No Data Present

Mar 25, 2009

When I run my application the following code prompts an error. Ideally, I want to populate the TxtOracleNo with a value read from another table on my form based on certain conditions i.e., prac_no, prac_eid and pay_method is the same in both tables then populate the Oracle No on TxtOracleNo text box.

The error given is
"Invalid attempt to read when no data is present"

The function is shown below
Private Sub Oracleview()
'Open the database.
'Delete any existing record
Dim cmd As New SqlCommand
Dim conn As SqlConnection = GetDbConnection()
[Code] .....

I checked that data in the database and it is available in both tables. Probably, the problem is where I call the function. Presently, I call it on loadform.

View 1 Replies

Computer Name - System Call Returned Error Code

Feb 10, 2009

It is working with vb6 but when I used vb.net 2008 it is not working
Private Declare Function GetComputerName Lib "kernel32" _
Alias "GetComputerNameA" (ByVal lpBuffer As String, ByVal nSize As _
Long) As Long
Public Function ComputerName() As String
Dim sBuffer As String
[Code] .....

View 2 Replies

"Error HRESULT E_FAIL Has Been Returned From A Call To A COM Component

Apr 9, 2012

In a Windows Forms Application, since updating to VS2010 SP1 I get the following error in the VS IDE either:when attempting to a open windows form in the designer; orwhen attempting to run the application in the IDE The application and solution builds OK in the compiler. The error message is:Inner exception: "Error HRESULT E_FAIL has been returned from a call to a COM component." System.InvalidOperationException was unhandled Message=An error occurred creating the form. See Exception.InnerException for details. The error is: Error HRESULT E_FAIL has been returned from a call to a COM component.

[Code]...

View 6 Replies

Avoid (Error HRESULT E_FAIL Has Been Returned From A Call To A COM Component)

Jul 7, 2011

i have create a setup file with inno software including interop.MessengerAPI.dll of chatting application(with windows live messenger).I have created a setup file with inno of that chatting application.but installed that setup it is work in only my pc it is not work in anather

[Code]...

View 1 Replies

Avoid( Error HRESULT E_FAIL Has Been Returned From A Call To A COM Component)

Jun 3, 2011

i have create simple chat application with windows live messenger.I have give reference of essengerAPI type Library.then it works.after creating a setup file with inno software including interop.MessengerAPI.dll of chatting application(with windows live messenger).Install that setup on anather machine then following errors are generates. ( Error HRESULT E_FAIL has been returned from a call to a COM Component).How to avoid or remove this error.?The chatting is not done in windows live messenger.I have give the anather reference ie, Interop.MessengerAPI.dll but same errors will be generates.Interop.MessengerAPI.dll it is supported in windows xp or not?

View 1 Replies

Error HRESULT E_FAIL Has Been Returned From A Call To COM Component"?

Feb 17, 2011

I prepared simple WebSite with e.g. one button.Next after closing the project, I opened it again - and on the form I have instead of button object with information:"Error Creating Control - Button1Error HRESULT E_FAIL has been returned from a call to COM component"After start the WebSite I can see the button every time, problem is only in the design mode.The same situation I have with other WebSite projects

View 6 Replies

Xml - Mix Values From Local Data With Values Returned From Database While Using LINQ To SQL?

Oct 27, 2010

I am creating an xml file with LINQ as follows...

Public Sub CreateXml()
Dim db As New MDataContext
Dim Customers = <gallery columns="3" rows="3">

[code]....

Could i mix local values with the ones returned from the LINQ query...Something like the following?

Public Sub CreateXml(ByVal **Col** As String, ByVal **Row** As String)
Dim db As New MDataContext
Dim Customers = <gallery columns="& **Col** &" rows="& **Row** &">

[code]...

View 1 Replies

How To Get Another Function's Returned Value

Apr 4, 2012

How to give another function's returned value in LINQ.[code]but in above query I should write code to store the return value of GetObjProperty Value(p) and add obj-p and returnValue combination to the dictionary.The last line below code is wrong. but please suggest me how to correct it. My intention is, I want output collection(say dictionary) of each fruitname and its color(returned by other function call) for all the fruits which the GetFruitColor is not nothing(it can be empty or valid string).[code]In above code last line is wrong. So how to put getFruitColor in k, how to correct it to save the k value and give me output as dictionary of fruit and k value.

View 1 Replies

How To Use Returned Value From Function

Sep 5, 2010

Why this code doesn't work? It returns an unexpected value actually total = 0.
total = Cscore(TextBox1.Text) * CDbl(TextBox2.Text)

When trying this
total = TextBox1.Text * TextBox2.Text
It returns the expected value but I need to pass textbox1.text to the function to get the desirable value

The function is this
Public Function Cscore(ByVal score As Integer) As Double
Select Case score
Case score = 100
Return 5.0
Case score >= 95
[Code] .....

View 4 Replies

Using Returned Value Of A Function?

Apr 2, 2011

I have many functions that perform mathematical calculations.

Here is one for example:

Public Function internaldiamofcasingpipecalculation(ByVal Externaldiameterofcarrierpipe As Double, ByVal insulationthickness As Double) As Double

[Code]....

View 8 Replies

Function Syntax - Call A Function With 2 Arguments When The Function Is Only Defined For One

Apr 1, 2010

I'm trying to undersatnd the syntax of calling a funciton and it seem confusing when I'm using a web service in ASP.net. Maybe this question should be in an ASP forum, but it is a VB question. This simple web service allows you to type in your name and it response with an alert box with you name.

My question is, How can you call a function with 2 arguments when the function is only defined for one. I understand that the second argument is actually a method that handling the respons, but how can you interchange function arguments for methods and how do you know that there are methods for

Here's my call:

<script type="text/javascript">

function HelloWorld()
{

var yourName = $get('txtYourName').value;

[CODE]...

View 7 Replies

.net - Interop Cannot Call Get_Range, And Cannot Use Two-dimensional Object Array Returned By Range().Value2?

Jun 1, 2011

Trying to replace Cells(RowIndex,ColumnIndex).Value() calls by row-wise references for performance, I permanently fail at referencing the result. Starting with Excel Interop - Efficiency and performance, which contains the tip to use get_range, i.e.

//get values
object[,] objectArray = shtName.get_Range("A1:Z100").Value2;
iFace = Convert.ToInt32(objectArray[1,1]);
//set values
object[,] objectArray = new object[3,1] {{"A"}{"B"}{"C"}};
rngName.Value2 = objectArray;

[Code]...

However, referencing Values with two dimension indices always returns an "index was outside the bounds of the array" exception. Inspecting the array with the debugger shows a nice 2-dimensional array which should has 17 elements on the second dimension, so Value (0,0) should indeed be a valid reference -- but it isn't:

The debugger lets me inspect Value, I can also drill down to Value(0,0) and see the correct value, but re-evaluating just that element, i.e. inspecting "Value (0,0)" returns above message.

View 2 Replies

Accessing Value Returned From Function?

Feb 22, 2010

I'm new to VB.NET and want to parameterise the SQL Connection Strings in my VB.NET App. I've added a function to my Main Form to retrieve the App.config File like:

Imports System.Configuration
Imports System.Configuration.ConfigurationSettings
Public Class MainMenu [code]....

In my other forms when i want to reference the Connection String, i get an error saying getConnStr is not declared?

Private Sub UpdDept_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try
myconnection = New SqlConnection(getConnStr()) <=============
Dim mycommand As New SqlCommand()

why i get this when i've declared the Function as Public?

View 1 Replies

Handle Nothing Returned From Function?

Mar 18, 2009

When the AlertsSettings.xml is not present the Appsettings is assigned to nothing. The variables that follow that definition rely on the existance of that information which will normally be set by the load method. But when there is a problem and either of the variables do not get a value how do I handle that in the code that relies on those values. The Settings class deserializes an xml document and assigned values to properties.

Sub Main()
Dim Appsettings As Settings = Settings.Load("AlertsSettings.xml")
Dim AlertsServer As String

[Code].....

View 1 Replies

Call A Dynamic Compiled Func(of ) Function Via Expression.Call?

Mar 22, 2012

I want to create an ExpressionTree where a Func(of Vector, Vector, Vector, Vector, Double, Double, Vektor) should be called. So I use

Expression.Call(Forces(0).Function.Method, {Vec1, Vec2, Vec3, Vec4, Double1, Double2})(Vec1-4, Double1-2 are declared as ParameterExpression and Forces(0).Function as Func(of Vector, Vector, Vector, Vector, Double, Double, Vector). But I get an AgrumentException, because Forces(0).Function.Method has seven Arguments. (System.Runtime.CompilerServices.Closure as seventh argument at Index 0).

View 2 Replies

Object Returned By Reference From Function?

Aug 5, 2011

This should be a fairly common question, but I haven't found a straightforward answer anywhere.

If I instantiate an object within a function in VB.NET and return it, does it return it be reference or by value. IE - should I be worried about performance if I write something like this:

Public Function ret_obj_func() As big_object
Dim ret_obj As New big_obj(<lots of stuff>)
Return ret_obj
End Function

If I call this function from somewhere else, will it instantiate the object in the ret_obj and then create a deep copy to pass back a copy to the caller, Or will it just pass back a reference?

View 2 Replies

Passing String Returned From Function?

May 2, 2012

I'm trying to establish a connection to my SqlDatabase while getting the connection string from a function. This will eventually lead to dealing with the appconfig file, but for now I'm just getting the basics established.

Imports System.Data.SqlClient
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[code]....

View 13 Replies

Set Combobox Displaymember To A Returned Value Of A Function?

Jul 2, 2009

Combobox with bound rowsource, but I want to change the displaymember to a string returned by a procedure. In Access/VBA I would have a little function to build the string, then simply code the recordsource of the cbo as:

"SELECT ClientIDS, fnGetName([ClientIDS]) AS ClientName FROM tblPerson ORDER BY fnGetName([ClientIDS])".

Pretty straightforward, but I've messed around with this for hours in VS2005/VB to no avail.SELECT ClientIDS, fnGetName

View 1 Replies

[2005] Is An Obejct Returned By A Function By Ref?

Feb 25, 2009

I have a 2 dimensional array of groupboxes that I use to populate a form setup so the first indice is a tab number and the second is the groupbox number.The user can dynamically add tabs to the tabcontrol but I need to add and populate groupboxes to the new tabpage and I can use existing groupbox data in the array for default values.I understand I have to code a deep clone of the source groupbox as it has textboxes in it so I want to add a cloneGBox function that returns a new, populated groupbox when I pass in the x,y indices for the source groupbox in my array.

dim gbx as groupbox = cloneGBox(x,y)
and code cloneGBX as
public function cloneGBox (byval x as integer, byval y as integer) as groupbox

[code].....

View 7 Replies

Change Width Of Database Field In Crystal Report At Run Time?

Oct 20, 2011

I am using VB.Net and crystal Report in VS2008. On Crystal Report I have a database(SQL20005) Column "Address".

I have used "Can Grow" option for that Column to change. But it resizes Vertically. I want to change its Width as Address have different data.

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved