I have a datagridview on my form which displays records from Mysql table on form load.i want to delete the selected row in datagrid from table on 'row header mouse click' event.
The 2 different codes that i tried --- deletes the record from the datagrid for a moment but does not delete from mysql table & re-appears when closed & debugged again.[code]...
I'm developing a small project (just for learning, I'm not a pro) which involves creating software which could be used by a store owner for invoice generation. It involves storing all the store's products in a MySQL 5.5 database. Visual Studio 2008 is used for front end (Project was started in VS2005, later converted). MySQL ODBC Driver 5.1 is used for connection purposes. I'm still a student and haven't been able to learn .NET yet. So, I used the following link to connect the Database and the interface. I'm able to obtain all the data from the database like 'Product Name', 'Price' etc on the VB's forms through labels.
Now, for the purpose of invoice generation, the data in the labels i.e, 'Product Name' and 'Price' should be added to another table named 'Cart' whenever a button named 'Add to Cart' is pressed. How can I implement it? I mean, could anyone provide me with a code snippet that fetches the data being displayed in the labels and adds it to another table through 'INSERT' statement? P.S Basically what I need is a code snippet in VB that lets me execute an SQL query(any one like INSERT or SELECT or UPDATE) when a button is pressed in a form.
i have a table named Tuition with fields:
[Code]...
I get this error, while I'm testing the code below:You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '[student](ID, LASTNAME, FIRSTNAME, SCHOOL) VALUES ('333', 'aaa', 'aaa', 'aaa')' at line 1I just recycled the code that I used in manipulating ms sql database. So the syntax must be wrong. What might be the correct syntax for adding records into mysql database?Here is my current code:
idnum = TextBox1.Text
lname = TextBox2.Text
fname = TextBox3.Text
[code].....
I work for a Non-Profit Organization... And I'm trying to make a program for all of us to use as stand alone to just check minimum things like volunteers, events, requests... etc. I have some experience with Visual Basic, but not a lot.
Imports System.Data.SqlClient
Imports MySql.Data.MySqlClient
Public Class Login
[code].....
I am getting a syntax error for the code below.I am trying to create a user in the mysql database and add their information to a datagrid control all in one button click using two statements; one to create the actual user, and one to add the user and their additional information to a table on the database and then refresh the datasource which will display the new user's information in the datagrid control.
If anyone knows where i went wrong please feel free to critique my code and let me know; or simply offer more efficient alternatives to what im hoping to achieve.
For those of you that must know, i am running the latest version of MySql server, MySql Workbench, and Visual Basic 2010 Express on a windows 7 based laptop. I'm writing this program in VB.net.
[Code]...
I am using stored procedures in my application using vb.net, while executing stored procedures on mysql database server thru application, the response time from the server is more. Is there any settings that i need to set on mysql db server or any changes in connection string or in code.
View 14 Repliesthe way i have my code i grab values from my listview (dynamic integers that vary depending on user choices up to 6 long) then perform actions with them in afor loop, at the end i was trying to delete that value so the loop wouldn't use it again but i can';t seem to get the syntax to delete the value.
[code]...
i thought listviewIDs.Items.Remove(listviewIDs.Items(x).Text) would have worked but no
Is this the correct syntax to delete a record from a dataset? [code]
View 4 RepliesI am working on a project, in which I have to run a MATLAB program in VB.NET In the project there is a VB.NET GUI, which contains a browse button. The user has to click on the browse button and select an image for processing. The user then has to click on the Process button for processing the image. After clicking the process button the image selected by the user has to go as input to the MATLAB program.
Q1) I want to know how to give the image selected by the browse button of VB.NET, as input to the MATLAB program for processing?Also while the image is being processed in MATLAB, a message such as "The image is being processed" must be displayed on the VB.NET GUI.
Q2) how to display the message "The image is being processed" on the VB.NET GUI, while the image is being processed in MATLAB?After the image has been processed in MATLAB, the image must be displayed on the VB.NET GUI.
Q3)how to display the image from MATLAB program in VB.NET GUI?
I am trying to execute the shell script in vb.net.[code]...
The script doesn't create the outfile mentioned in -out switch. The path mentioned is correct and also the command with switches is correct. It runs well in command prompt but not in the program. [code]...
I'm using a combobox connected to my account numbers in mysql..I want to take the selecteditem and put it in the delete row string for mysql using vb.net....her is what I have so far and it wont delete the seleted..any help will do....
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
'delete selected row from database
Dim Ans As MsgBoxResult
' Set icon to exclamation mark
[code].....
Is this the right way to delete a record in a mysql im using a listview do i have to code the listview? I dont have any errors with this but it just wont delete the record in my database and in my listview.Is this the right way to use listview? when deleting a certain record.Not familiar using the mysql commands it makes me confuse and difficult to the properties of each of mysql commands they dont provide enough example using those properties in mysql and it is not well explained for me each of their properties im new with this stuff. [code]
View 8 RepliesI wanna know how could I do to:Assemble a finished program, install it, and leave it executing in second plane to just push a key to work. Execute it once at the windows start and execute just a single key to make it work.I'd like to know what should I put before the assembly
View 5 Replies1. How similar is the .NET to JVM in executing a program ?
2. How different is it ?
3. Is the .NET Framework available for Linux ?
4. Can I run a VB.NET application written for XP on a Linux machine ?
This is the Query:
DELETE FROM patientpersonal,patientmedical,patientdental
WHERE patientpersonal.'" & dpatientid & "' = patientmedical.'" &
dpatientid & "' AND patientpersonal.'" & dpatientid & "' = patientdental.'"
[code].....
Having read the rules I don't have much code to show apart from these lines I want to have executed just before the program or a form closes.
If My.Computer.FileSystem.FileExists("File.file") then
My.Computer.FileSystem.DeleteFile("File.file")
End if
I am using VB.NET 2008 and SQL Server 2005.The program runs on a different machine than SQL Server machine.If I read a SQL Server view from my VB.NET program (instead of executing a stored procedure)for ex: Select a,b,c from MyView where account = '1' and symbol = 'abc'will the speed of executing the view depends on the resource (CPU and RAM) of the machine where the program is running or the machine where SQL Server is running ?
Dim m_cmdSQL As SqlClient.SqlCommand
Dim m_daSQL As SqlClient.SqlDataAdapter
Dim m_dsSQL As DataSet
[code]....
Why am I getting a request to configure DAO when I start a program I am developing in VS 2008? After I execute several cancels, the program runs fine.
View 1 RepliesI've just switched from classic ASP to .net and I always used the following to SELECT, INSERT, UPDATE and DELETE from my MySQL databases:
' Create db connection
Function dbConn()
Set objConn = Server.CreateObject("ADODB.Connection")
objConn.Open "driver=x;Server=x;Port=x;Option=x;Database=x;Uid=x;Pwd=x"
[code]....
And to insert, update or delete I'd use:
Call SQL(1,"DELETE FROM Users WHERE UserID = 1")
I am making a invoice system in Visual Basic 2010 and i am stuck here Here is my code
Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click
For Each row As DataGridViewRow In datagrid.SelectedRows
Dim selectedindex As String = datagrid.CurrentRow.Cells(0).Value.ToString()
datagrid.Rows.Remove(row)
[Code]...
This code is not working well please have a look to my invoice screen shot and suggest me a better code
When i try to delete the selected row the code does not work and if any one can tell me i can delete multiple selected rows? they are deleted from the datagrid but not from database
I have a datagrid control with a list of names that it retrieves from a MySql database. I can search through them until i have one result. I want to be able to Display a groupbox control when the number of results is equal to 1. Also, in the groupbox i have a button that when clicked will delete this user from the server and their information from the mysql table called "employee". when the user is deleted i'll display a confirmation message in a messagebox, and reload the table with the updated list. so far the only two problems i have are showing the groupbox when the results are equal to 1 and deleting the user from the sql server based on the name of the search result
Private Sub TextBox1_KeyUp(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles TextBox1.KeyUp
'Search Function.
[code].....
'i have written the following code:
Private
Sub Combo_Mth_KeyPress(ByVal
sender As
Object,
[code]....
'even thogh it seems to clear the text and select default text yet user written 'keyword appears in the text area of combobox?
how to add, insert, delete and search data in vb 2008 using mysql databases.
View 1 RepliesI would like to execute an external program within powerpoint after the presentation has loaded so i can see if its working. In short my overall objective is to execute the external program which will open up the command prompt and use the sendkeys method to sendkeys to command prompt which help it to run a script at the correct time (which is after presentation is loaded).
View 9 RepliesI have some difficulties concerning threading [code]
Code:
1- Dim str As String
2- Dim x As New myClass
3- str = x.doSomething()
4- x.closeSomething()
I've included line numbers so I can just refer the lines by their numbers. My problem is, when the program executes, line 4 seems to be executed earlier than I want it to. It gets executed while ThreadX is still running in line 3. How can I force the program to wait until ThreadX has finished executing, before it executes line 4?
I was trying to convert 1 syntax to VB.net over the online converter but it does not work.[code]...
View 4 RepliesWhat I really want is to select these two tables in to an anon type like in Scott Gu's blog: here However, I would settle for this created type "ActiveLots" I am joining two tables together and want to be able to reference columns from each in my result set. [code]...
View 1 RepliesI am having a problem with the syntax of this calculation for a bowling program that I am writing for school,
If radMale.Checked = True Then
(200 - decAverage) * .75
lblAverage.Text = FormatNumber(decAverage)
I need to interpolate a string containing a file name into this statement...
fileReader = My.Computer.FileSystem.ReadAllText("C:myfile.txt")
