SQL SELECT Result Not Same In Program
Jul 10, 2011The sql scripts below gives me the correct number of students queried but when I used it in VB I am getting less number of students.[code]...
View 17 RepliesThe sql scripts below gives me the correct number of students queried but when I used it in VB I am getting less number of students.[code]...
View 17 RepliesI have a table which contains a list of products for a company. They input data about how much stock they have and also the level at which they want to be reminded that they need to order new stock.
[Code]...
I want to list all the true results in a form which the user is then able to navigate through. What would be the best way to go about doing this?
[code] if some one let me know the way that I can display the select result
View 1 RepliesI used the following code to select unique values from the database [code]And it does not retrieve the unique values, it remains the same. But if I use only SELECT DISTINCT Author FROM tblBook it works fine.
View 3 RepliesI'm relatively new to VB. I want to perform a SELECT statement that uses a variable to return a value, example;
mysql> SELECT room_description FROM room_descriptions WHERE current_room = 'someVariable';
And display the result in a TextBox i.e. TextBox.text = someVariable.
So how do I perform a query from VB that passes a variable? How do I assign the result to a variable?
In my .NET application I have to get results from a MS Access database. I would like to add error checking to make sure a row was returned from my SELECT statement.
View 1 RepliesI'm using VB.NET with the MySQLConnector, I have an ID column with differents values, i.e:
101
102
201
202
203
302
304
305
306
I want to select all the values that start with "3" and then, select the MAX of them, in this case, "306"
i got a probleam with my selection in list box. If i to select item in the list box then the result will display in textbox. I got an error England is not member list of ListBoxGreeting Here is my code and picture on my application. I am using visual studio 2005
Public Class Form1
Private Sub ListBoxGreeting_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListBoxGreeting.SelectedIndexChanged
[Code]....
For example
month1 month2 month3 total
district1 5 2 9 16
district2 1 0 11 12
total 260 150 140 550
Here final total is not much important. But at least I need to show count per district per month.
SELECT Districts_mst.district_name,COUNT(Payments.PaymentId)users ,DATEPART(M,payments.saveon)Month
FROM Payments
JOIN Subsciber ON Payments.SubId =Subsciber.SubId
JOIN districts_mst ON districts_mst.district_id = Subsciber.District
where lang_id=1
group by district_name, DATEPART(M,payments.saveon)
Which give me list like.....
district_name users Month
dist0 1 1
dist1 1 11
dist2 3 11
dist3 1 11
dist4 3 11
dist5 1 12
dist6 1 12
I have a form with 10 textbox's showing my computer information and textbox5 shows a number 123456789 of bites on my hard drive how can i change this number 123456789 to gigabites i want the result to look like (100GB)
View 1 RepliesI have one text box where i display my current time now i want that current time record to be display in my second text box
View 4 Repliesif you want to make program to calculate the result of brackets math question , as 6+(9+(5-(1+(2+1)))) , and you made 2 buttons representing ")" and "(" , and you want when the user clicks on the "(" button it just applies that the number before it to be stored in a place like a label such that the program calculates numbers after it and then calculate the produced number and the label number , something will disallow you that the questions with many brackets as the mentioned one above 6+(9+(5-(1+(2+1)))) will for example store 6 and plus sign in a label but after that 6 will be placed by 9 because there is another bracket after 9 , so the question will be calculated false , more clarification for my question is the way brackets are made in the windows calculator so i want a coding idea to make the brackets like in the windows calculator
View 5 RepliesI have a VB.Net program that will basically make a query to a remote MS-SQL DB using TSQL, return two columns (normally 4 rows/records), 1 is a datetime and 1 is a double. I will then need to return the average of the doubles (which is easy in VB.NET).
As I will need to run this query perhaps 1000 times an hour (programmatically with different input parameters for the query), I am looking for the most efficient way to code this up so that it will take the shortest time to run. I tried SQLDataAdapter and then using dataAdapter.Fill and sometimes it returns an empty set although the raw select query has values returned.
I have created a program and i want to save data.for example: I have created a program in this way: me.textbox1.text = me.textbox2.text * textbox3.text
and I want to know how to save the result in textbox1 then program not work (is off)
I have a stopwatch in my program. I start the stopwatch with the start button I created. When I stop it it gives the results of the time in a label that I have named labelTime. I have a Calculate button I have created. I also have a label I have named calcResult. I want to click the Calculate button and divide the stopwatch result (labelTime) by 60. I want the results of this calculation to be displayed in the label calcResult. I keep getting errors saying labelTime is a string value. I believe I will need my calcResult to be a Decimal.
View 20 RepliesI am currently having a headache on how to solve this problem that i am facing. here is the situation: I have a combobox and a list box on the main form. The combobox will get the data from the ms access database. In the database, i have the details of a person's IC, Name and DOB say for eg on one entry I have D215311523C,SHAWN,13/04/1987 So now, my combobox on form load will show the list of dates in the database to allow the user to search base on the date itself by clicking on the selected date. So when the user clicks on the particular date say 13/04/1987, people in the database whose birthday is 13/04/1987 will be shown on the listbox.Meaning to say if i have 3 entries whose dates are the same 13/04/1987, 3 entries will appear. If there is only two entry, then two results will be shown. But now, when i do a single click on the date, one result will be shown. That is correct. But the problem is when i click on the same date again, three of the same results will be shown on the list box. that is it will display : 13/04/1987 13/04/1987 13/04/1987 which is not the case. Then it will show more duplicates of the same results if i click more times on the same date which should not be the case.
Dim n As Integer
Dim numbers() As Integer
Dim StartFrom As Integer
Dim EndAt As Integer
[code].....
I am using a datagrid in my where i am having four columns. In first column the parameter values are entered and in the second column measured value is entered and in third column the nominal value is entered.Inthe fourth column the result is displayed by subtracting the measured value and nominal values. I am doing this calculation in Datagrid cell validated event. What i want is,there will be many rows in the grid,when typing the value in the third column the corresponding result will be displayedin the rowof theresult column,save button will be displayed while the form loads,when the calculate part is completed that is there should not any cell of the resut column empty then i should enable the save butto.
View 2 RepliesI 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)
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]...
I just read about DataSet in VB.NET, it uses disconnected concept. My question is: if my apps has "List All" button that query data from 1 table in the database, and that table has "very very very" many rows, so my DataSet will be filled with those data and eat up memory. Can I limit the data that being put to the DataSet from that query? But I want to be able to retrieve the next data from the same query if the user want to see it?
For example:
I have 1000 rows in my database, and i query all of them. But I just want 200 rows being inserted to my DataSet, but if the user want to see rows number 201 and so on, I want to be able to retrieve the next 200 rows, and so on. So it just like cutting those data into a group of 200 rows. Can I do this with the concept of "disconnected" of the DataSet?
AS a SQL function, there is "isnull" to find and change the null value to something like below.
DECLARE @VALUE STRING
SET @VALUE
SELECT ISNULL(@VALUE , "THIS IS NULL")
Then the "Select" result will be "THIS IS NULL".
Is there a way that I can achieve this result from VB.NET 2005?
I'm working on a quadratic formula program and when I enter 1 as A, 2 as B, and 1 as A (X should end up being -1), it returns "NaN" in both text boxes.
Here's the code:
CODE:
I want to know how to select the end of the data in my table..
View 3 Repliesi want to know how to let the user select a password for a program that i made and would like to know where the password is storedNever Fear Spartucus49 is here
View 16 RepliesI have a list box that contains 2 or 3 items (depending on which computer it is being run on). What code can I use so that the program will select the first item in the listbox, no matter what it may be when the form loads?
View 3 RepliesI'm creating a browser, and I'm using devcomponets' Tab control,And I watched a youtube video on embeding the favicon into the tab. This code works perfect, although on websites that have got different sizes like 24x24,32x32,16x16
all in one 'favicon.ico' file in order to comply with ie9 site-pinning, My browser seems to go with the biggest available. How would I be able to restrict the icon size to 16x16 and resize the big icon if there is no 16x16 [url]...
So I have[code]...
It would give me 5 instead 4 results, since <title>My Channel</title> is considered one of the item under channel. I'm just wondering if there is anyway to loop through only the 4 item elements.
I'd like to know how you can actually select(highlight) a program from a list of programs displayed in a list box in Windows Form. I've done research and most results end up with openFileDialog condition or have to manually type the directory path. But what I have currently is the display of a list of programs in a list box(like Add/Remove Programs) but I'd like to have the user launch it upon double-clicking or clicking on a button(after a program is highlighted).
In short, it's like selecting a program in Add/Remove Program but instead of the Uninstall button, I want it to be a Launch button. I believe I already have the executable path behind the codes with the registry so I just need to know how you can select, and launch.
(Below contains an example of the kind of code I'm having)
Public Partial Class MainForm
Public Sub New()
' The Me.InitializeComponent call is required for Windows Forms designer support.
Me.InitializeComponent()
[Code]....
I have set up a method in vb.net and in xcode for encrypting a string using as far as i can tell the same parameters for an AES encryption.I've looked all over the place but cannot find information on whether they use the same encryption algorithm and settings.
this is the vb.net code:
Dim encryptAES As New AesCryptoServiceProvider()
Dim encoding As New UTF8Encoding()
Dim encryptor As ICryptoTransform
encryptAES.Key = encoding.GetBytes("12345678901234567890123456789032")
encryptAES.IV = encoding.GetBytes("1234567890123416")
encryptAES.Mode = CipherMode.CBC
[Code]...
I need my program to select the proper output in the listbox based on what the user input as the delivery code!I have attached the complete file that is run in Visual basics 2008 express edition.
This is the code:
Public Class frmMain
Private Sub btnExit_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExit.Click
[Code].....