SQLDataReader - Creating A Small Program To Read From An SQL Server, Loading Result Into An Array
Nov 15, 2011
I'm creating a small program to read from an SQL server, loading result into an array, pivoting the array to my liking and mailing it out to selected members of a group. It's going to be run once a day with Windows schedule. I have the connection, query and mail sorted, but not the datareader to array bit.
(line 26)?
Imports System.Data
Imports System.Data.SqlClient
Imports System.Net.Mail
[CODE]...
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Jun 11, 2012
I'm attempting to make a generic query executer function. I want to be able to send it a query string and have it return a two-dimensional array containing the results. Below is my code for how to do it with a (9,x) array. How can I do it with an (y,x) sized array? Also, I feel like there must be a more efficient way to do this..
[Code]...
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Apr 11, 2011
im using visual basic 2008 and a made a fully functional webbrowser useing the control. i have a huge list of ad servers and every different one is separated by an enter. i need a way for the program to read the file and block ads from loading.
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Aug 27, 2010
I need to make a small programm for ticketing on a parking for a small hotel.So i have 2 Printers pariking In (for delivery of the tickets) and 2 Readers PArking Out.Both Printers and REaders are working Serial.So i need to poll the serial ports of the printers and readers every second.The data is stored on a SQL database so i need to read and write in the database.Can i do this with 1 PC and 1 programm or 1 PC and 4 programms that are runnning at the same time ?
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Jun 23, 2011
bit is use for boolean where it is use to define result either 1 or 0 / true or false.
how to set it, if i want to define result either in or out/ yes or no/ big or small..
can i change it??what is the code to set it..
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Mar 29, 2010
I have a small installment calculator assignment, I have only used VB6 before but i am required to use .NET (using Visual Basic 2008 Express).
There are four fields:
1. Loan Amount (10,000.00 - 250,000.00)
2. Loan Term (5 -25 years)
3. Loan Interest Rate ( Input to 2 decimial places)
4. Payment Frequency (12, 4, 2, 1)
I need to calculate an Effective Rate as:
CODE;
Then calculate an Installment Amount:
CODE:
Where:
CODE:
And finally display installment amount on the form.
This is the code I have so far, but I am getting a NaN result!
CODE:
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Aug 28, 2010
I am using a sqldatareader to read some values into a form from my database. I would like to know the number of rows returned by my query and I cant figure out how to do this. I want to use the number of rows returned so that I can redimension an array of values to the correct size. Here is my code I am working with:
[Code]...
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Oct 14, 2009
I am encountering the following issue So i have a device that sends stuff at the serial port, i then parse it and put it into an array of bytes like that:
Dim HCI_Command_Rcvd_Byte() As Byte All good till here What i wanna do is make an array and put this result every time the serial port gives me a new result, for example:
[Code]...
Basically what i wanna do is let the port parse the messages, fill in the array with the result at an empty spot in this array and then i will have a separate thread that will look in into this array in each non empty space and after it looks into the non empty space it will use or discard the info and also mark this space as empty (after it checked)
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Jan 18, 2010
Imports
System.IO
Imports
System.Windows.Forms
Imports
[CODE]...
I don't understand why nothing is being returned from the SQL)
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Mar 14, 2011
I've searched high and low for the proper way to read from a csv file into a two dimensional array. I thought I found the answer but for some reason I'm getting an "IndexOutOfRangeException" was unhandled message.[code]...
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Jan 25, 2010
How to read users in sql server in vb .net. i want to synchronise users from sql with users from my application.
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Jun 28, 2011
Im a newby in creating programs using vb.net. Currently 'm creating an program that will display array data to datagridview. Can somebody help me how to do it?
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Mar 24, 2010
I am trying to learn by creating a small application to help my son learn math. It works but I know there are better ways of accomplishing what I need.
For example:
'Declare variables
Dim num1 As Double = CDbl(frmMath.txtNum1.Text)
Dim num2 As Double = CDbl(frmMath.txtNum2.Text)
Dim answer1 As Double = CDbl(frmMath.txtAnswer.Text)
[CODE]...
I imagine I would need something like a do while loop?
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Jul 31, 2011
I have written server code in vb.Net. I want it to read to variables sent by another server's HTTP 'GET' request. For example the first server will send this URL [URL]msgid=$messageid where the values to be used by my server are sender, receiver, msgdata, recvtime and msgid I have written my code but it only reads the address sent by the http server and locates for the file in the server's root directory. I want the server to be reading the variables sent by the other server using the HTTP 'GET' request. My code is shown below
' the web server only accepts get requests.
If Mid(LCase(sbuffer), 1, 3) <> "get" Then
'if not GET request then close socket and exit
[code]....
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Mar 12, 2012
I have a 2d array of data that I have performed the sum of the individual column of the 2d array. I want to send the results to a datagridview and also will like to have the result as a 1d or 2d array.
Below is sample of my code
Dim Array1(,) as double
Array1(0, 0) = 5
Array1(0, 1) = 7
[code].....
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Nov 25, 2009
I am creating a small admin reporting tool that gathers certain information on some PCs. Unfortuantly the user that is running the tool doesnt have access and I cant give access to those particular machines. What I have done is created a user on these machines that can get this information.I would like to then have the reporting tool run certain parts of the code as this user so the information can be obtained, without any intervention from the user running the tool. Can I hardcode this user into the code so that it runs the code as the user?
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Dec 7, 2010
i am creating a shift rota system for a small number of staff basically there is a 3 week rota
week 1 - late
week 2 - early
week 3 - off
i am getting confused on how to calculate which week the member of staff is currently on eg week 1 / 2 / 3 i think i need a datediff with a mod to calculate it but thats where im getting confused (if im even right on that part)
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Aug 9, 2011
I'm trying to create a small game in VB2010. The gameplay is as follows:
civilians would walk/stand in a room/street and suddenly an evil character would pop from the ground/wall. This evil character would suddenly vanishes too. So, the player has to shoot it to kill the character. The evil character, civilians, etc. would be random. Also, there would be sound effects too. That is the popping up of the evil character, it's voice, the civilians voice, etc. I'm trying to make it as simple as possible but without degrading the quality of the game play. I think, I could somewhat create the graphics for the characters, scenes, etc. and can get the sound effects recorded.
So, the difficult part is,[ ] how could I make it a smoother for playing the game ?
[ ] what would be the best way to do animations ?
[ ] Creating a GIF and placing it in the picturebox and moving it ?
[x]how to play the music in background and at the same time play sound effects on certain instance ?
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Apr 11, 2009
How do i divide an array into small 5 arrays.it is a byte array
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Oct 11, 2009
Are there any other ways to make small databases then to use access or sql server?
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Sep 13, 2009
I have this gamepad: [URL]I want to write a small application that is able to read what button is pressed on the gamepad.I've seen this thread:[URL]but this does not read the input of the controller, it only initialize it.[URL]
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Jul 21, 2009
Read Result Of GSM Modem?[code]....
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Jun 19, 2009
I am trying to read a single result from an SQL table. I tested my query in MySQL Query Browser and it returns a result of USER_ID=4. My query:
SELECT USER_ID FROM aaalogin where NAME = 'administrator'
I believe my error is due to some "double quoting". I have a "txtUsername" textbox on my login form. I want to inject the typed entry from this textbox into my SQL QUERY. Notice the end of this line, I have tried tons of combinations, nothing works.
myCommand.CommandText = "SELECT USER_ID FROM aaalogin where NAME = " & " ' txtUsername.Text ' "
The result is ALWAYS "0" though, which is useless to me.
Full code below:
Imports MySql.Data.MySqlClient
Imports System.Data
Public Class frmLogin
Private Sub cmdCancel_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdCancel.Click
Application.Exit()
[Code] .....
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Apr 16, 2012
So I tries to read txt file to memory, sometimes (just sometimes) I getting this error: The output char buffer is too small to contain the decoded characters, encoding 'Unicode (UTF-8)' fallback 'System.Text.DecoderReplacementFallback'. Parameter name: chars
[Code]...
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Dec 30, 2009
please tell me what is below code doing? is it creating array with two values or its creating to string index which will take value later? [code]
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Sep 29, 2010
I need small code for array/dictionary to pullout data conditionally.i have data:
oid----opriority----task
10--------3-------Task1
5--------1--------Task2
1--------6--------Task3
i need to build one array/dictionary to store the data in this format then i can pull the value like.
select oid where task = task1 order by opriority
It is easy for me do in database table, This is run time and i need to work in RAM. how i can build the array and pull the data accordingly.
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Jan 21, 2010
I want to put undo in a small program
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Apr 17, 2009
I am trying to build a small program which will allow some one to click on the exit button and the sound will play and at the end of the sound the program will then close. The sound clip is about 3 seconds long Here is what I have:
Imports Microsoft.DirectX
Imports Microsoft.DirectX.DirectSound
Public Class Form1
Private Dsound As CSoundDevice
[code]....
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Aug 7, 2009
how to create a bitmap image of a specified size? then how to save and reload such a bitmap to and from a file?VB2005 starter
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May 5, 2010
Im wondering how would i work with a text file. which would allow me to Read the next Record, Cut record out of the program.
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