PhpMyAdmin MySql Database - Program Hangs In The For Loop Before The Variables Are Assigned Values From The Data Table
Jan 5, 2012
I am using vb.net with phpMyAdmin MySql database. While running the piece of code below, the program hangs in the for loop before the variables are assigned values from the data table(dt)...
'Check for appraisal period-----------------------------------------------------------------------
Dim sqlCheckDate As String = "SELECT * FROM tblappraisalsetting where appSetID=(select max(appSetID) from tblappraisalsetting);"
[CODE]................
View 1 Replies
ADVERTISEMENT
Mar 13, 2012
the form loads, it loads the fetch data from mysql in a datagridview, but when i click cancel button, it will again load the same data.
View 1 Replies
Jul 25, 2011
my program seems to just freeze whenever I press this button. I need to be able to use this because I'm reading values from a joystick as i'm making a human interface device.
Why is this freezing?[CODE...]
View 3 Replies
Dec 18, 2010
I have a data logging application that stores data in a table in a MySQL database. Data with a TimeStamp is logged into the table anytime the data from the sensor changes. This means that there maybe 2 seconds between data points or there maybe 20 seconds between points depending on how the data is changing.
When I need the data I have 2 dates and use this command to fill a table..SELECT FROM myTable WHERE timeStamp > date1 AND timeStamp < date2 This gets all the data that has a TimeStamp between the given dates, but in most case the first date in the returned table will be after date1, so I need to get the data from one row before the date returned in the table to know what the data was at date1.How can I get the data row that immediately precedes the returned data set?
View 2 Replies
Oct 22, 2009
I have login system and also I know how to get 1 exact row from mysql but how can I create a table which will be filled with values from mysql table?
[Code]...
View 1 Replies
Dec 27, 2011
I used the following code to insert data from my VB.NET into the MySQL database.[code]..
View 2 Replies
Oct 22, 2010
what if you created a pool of numbers: 1 - 21 and then chose a random selection from the pool? Something like the following:[code]This gets rid of those messy if statements and all of those loops.
View 1 Replies
Aug 17, 2009
I've written an algorithm that I believe to be correct for computing prime numbers up to n with the Sieve of Eratosthenes. Unfortunately, this program hangs on really large values of n (try 10 million). Here is what I've written...
Protected Function Eratosthenes(ByVal n As Integer) As String
Dim maxValue As Integer = Math.Sqrt(n)
Dim values As Generic.List(Of Integer) = New Generic.List(Of Integer)
[code]...
How might I speed this algorithm up? Where are my bottlenecks?
View 12 Replies
Nov 2, 2011
I'm writing a program for Employees Management and i need to automatically generate a Payroll for each one then calculate some things and save it to another table.
I know how to calculate and save. I just need to get all the ID column of all rows in my Employees table, and select each Employee ID one by one in order to calculate each payroll automatically.
View 2 Replies
Apr 20, 2012
So I am able to get the comboBox populated with the proper list of "clientLocations".
However they all have a valueMember of 0; thus the issue at hand is properly assigning the value of the comboBox items to the database column (which is returned in the dataset) rather than just the name.
Private Sub updateClientLocationComboBox()
'clear list
comboBox_clientLocations_deviceList.Items.Clear()
[Code].....
View 1 Replies
Mar 29, 2011
I would like to loop over two string arrays but does not work.[code]...
View 4 Replies
May 22, 2011
How can I update local dataset with mysql database without making duplicates. Assuming I set some column in mysql as primary key, which has unique string.
adapter.fill will just add duplicates, but adapter.clear before that is not an option.
So I want to update if the key column is the same with mysql data and if there is option for ignore adding new row.
View 1 Replies
Jul 2, 2011
I need to know if is there a chance to connect a visual basic program to a database , example PhpMyAdmin.
View 16 Replies
Apr 21, 2010
I want to be able to see if the values a user inputs into 2 textboxs equals the values assigned to a picture. I put these values in the picture's name and tag. Also the picturebox is getting the image from a random function correlating to an imagelist. How would i go about thisI thought of maybe using a checkbox and coding
If picturebox1.image.tag = ("12") _
and textbox1.text = 1 _
and textbox2.text = 2 Then
checkbox1.checked = true
unfortunatly when i debug it says the picturebox1.image.tag = Nothing
View 3 Replies
Sep 20, 2010
I'm trying to add values to a MySQL database. The values that I need to save come from several textboxes. The SQL-query is read from a XML-file.
Query: INSERT INTO myTableName(ID, Groep, Naam, Achternaam, Intern, etc...) VALUES(NULL, NULL, tel_txt_group.Text, tel_txt_name.Text, tel_txt_surname.Text, tel_txt_intern.Text, etc...)
Unknown column 'tel_txt_group.Text.ToString' in 'field list'
View 25 Replies
Sep 22, 2011
In the following code I have two class scoped variables intCompanyID and intEmployeeID. When I set them to a value in btnFetch_Click then try to read them later in btnSubmit_Click they are set to zero.
Option Explicit On
Imports MySql.Data.MySqlClient
Imports System.Data
[code]....
View 2 Replies
Dec 22, 2010
I found some code on the internet as below (slightly modified).It simply requests the content of a webpage.However I get two warnings:
Warning 1 Variable 'srRead' is used before it has been assigned a value. A null reference exception could result at runtime.
Warning 2 Variable 'Str' is used before it has been assigned a value. A null reference exception could result at runtime.
I know I can simply forget about the Finally and add the code to the try block.Will that be the way to go or can I prevent the warnings using a different approach?
View 2 Replies
Mar 2, 2011
I have a MySql database on a server. How can I write tables and fields to it via Visual Basic?
View 5 Replies
Jun 5, 2012
How to Inserting Label.text data into mySql table.i have no problem with textbox.text but i can't figure out how it with Label.text[code]...
View 1 Replies
Feb 9, 2012
I figured it out without useing parameters, but that error message tip did help me figure it out. Ok so ive been trying to just insert a string into a MySQL database, heres the code for it its very simple. Its just not working need help to get this to work before i can move on textboxes. I get the cannot connect erroer each time i do it.
[Code]...
View 4 Replies
Dec 26, 2010
I have a login form that consists of 2 text boxes: txtUser, txtPass. Now these are not bound to any data table & I don't what them to be bound. When a new user enters his user name & password, I want to add these on a data table that has two columns: User, Pass. Data table information: Data Source = Login.accdb, Data table = LoginTable, Connection = LoginCn. I use visual basic 2010. So how do I do this?
View 1 Replies
Jul 8, 2009
I currently have this working already for one of my combo box's, but when i try to use the same code i get this error ''There is no row at position 6.'' . The are 2 fields in the table asset_type_id, asset_type_name', im trying to dispaly the values in a combo box for the field 'asset_type_name.
the code for ' Friend Sub RetrieveCustomerInformation2()' works but the other friend sub throws the error.
Imports System.Data.SqlClient
Imports System.Data
Imports System
Imports System.Data.OleDb
[Code]...
View 3 Replies
Apr 15, 2010
I'm creating a calculator in visual basic 2008, and with this calculator I want to implement a feature that can store numerical values in a variable for instance x. Similar to the feature used in most graphing calculator that have the button showing: "STO->". I was thinking on using the My.Settings. But I'm having trouble on it.
View 2 Replies
Aug 14, 2009
I have a form called SearchScreen and on that screen is a custom control of class recentlyOpenedCompany called 'uxRecentlyOpened' within the form. I have made no changes at all to the SearchScreen form. I have added an aboutdialog to the project and deleted an about form. Thats itand
View 1 Replies
May 22, 2009
I have written a web page which connects to a database and then display 3 values from a management reporting system using the database.
I am accessing a database using the following code:
<asp:SqlDataSource ID="SqlToVersion" runat="server"
ConnectionString="<%$ ConnectionStrings:WebImportOnServer %>"
SelectCommand="SELECT [VerNo], [PeriodName], [PeriodNo] FROM [atblVersion]"
[Code].....
but it is how to replace the question marks with valid code that takes the values from the bound fields that I am stuck with.
View 3 Replies
Feb 10, 2012
I have a problem inserting data into a table on a MySQL database using a VB.NET application. I have a simple form where when I set some data to the textboxes and I press a GO button, the code should execute a function called InsertCar() that takes all these values and insert them into the database and then return true if the transaction is done successfully or false otherwise. My problem is that nothing is being inserted into the table.
Imports MySql.Data.MySqlClient
Imports System.Data.Sql
Imports System
Imports System.Data
[code]....
View 5 Replies
Sep 25, 2011
I have the following controls:
[Code]....
I have a table on a MYSQL database called "messages" and a column called "message". When i type something into textbox1 and click button1 i want to add a row to "messages" under the column "message" with the title and message as its value.(separated by a hyphen, dash, or other small delimiter)Then reload listbox1's contents to show the new message. so i want the final message to be something like:
[Code]....
View 2 Replies
Jan 14, 2011
I am trying to loop through an array and perform an httpwebrequest in each iteration. The code seems to work, however it pauses for a while (eg alot longer than the set timeout. Tried setting that to 100 to check and it still pauses) after every 10 or so iterations, then carries on working.
Here is what I have so far:
For i As Integer = 0 To numberOfProxies - 1
Try
'create request to a proxyJudge php page using proxy
Dim request As HttpWebRequest = HttpWebRequest.Create("[URL]")
request.Proxy = New Net.WebProxy(proxies(i)) 'select the current proxie from the proxies array
request.Timeout = 10000 'set timeout
[Code] .....
I have tried a using block, eg:
Using response As HttpWebResponse = request.GetResponse()
Using sr As StreamReader = New StreamReader(response.GetResponseStream())
Dim pageSourceCode As String = sr.ReadToEnd()
'check the downloaded source for certain phrases, each identifies a type of proxy
[Code] .....
Does the try catch statement automatically close the response, or do I need to put something in Finally? If so, what? i cant use response.close() because its declared in the try block.
View 2 Replies
Feb 17, 2011
I have a dataview and want to update using a stored procdure. My Update procedure is as follows. When I have a watch on my variables (int & amt) it is reading empty string even though I pass values. Yes cell(1) is my ID coumn and cell(8) is my amt coulmn
Protected
Sub GrdResult_RowUpdating(ByVal
sender As
[code].....
View 1 Replies
Feb 11, 2012
This is the Query:
DELETE FROM patientpersonal,patientmedical,patientdental
WHERE patientpersonal.'" & dpatientid & "' = patientmedical.'" &
dpatientid & "' AND patientpersonal.'" & dpatientid & "' = patientdental.'"
[code].....
View 2 Replies
