i am using MySql with vb.net to insert some data in a MySql table and i am facing a problem with encoding.When i try to insert Greek characters the characters in the database are saved as. I made a research in net and found that a mysql query SET NAMES 'utf8'. Solves the problem. I made an execute command but doesnt work.
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I have a query from within my vb.net code which searchs for a record by date. The date being entered via the code is in format dd/mm/yyyy, i need to search in the database using yyyy/mm/dd? Ideally i thought there may just be a function within MySQL which will convert this. If not in vb.net to convert the string 01/01/2011 to 2011/01/01?
View 1 RepliesI have mysql database with one table , and I want to show the columns' names re;taed to the table in combobox in vb 2005
this is my mysql command :
SQL1 = " select column_name from information_schema.columns where table_name='others'; "
this is my code after execute the command and store the data set in variable ( DS ) which its type is "DataSet " :
If DS.Tables(0).Columns.Count > 0 Then
For j As Integer = 0 To DS.Tables(0).Rows.Count - 1
list1.Items.Add(DS.Tables(0).Rows(0).ToString)
Next (j)
End If
I have written some code so i can connect to a Mysql db. But how can i get like an array of the columnnames?
View 2 RepliesI have A database in access2007 I want retrieve column names with sql query in my project I write below code: "select column_name from information_schema.columns where table_name ='table 1' ORDER BY ORDINAL_POSITION" but display error : Could not find file 'D:ProjectsTapco_ECMTapco_ECMTapco_ECMinDebuginformation_schema.mdb'.
View 3 RepliesI have a csv that I need to parse into a gridview in vb.net. If I do SELECT *, I get the data without issue. However, I am in a situation where I need to reference the actual column names. And problem is, I have no control over the app that generates the csv, and they make the column names enclosed in square brackets.
How the heck can I do something like this:
Dim cmdSelect As New OleDbCommand(SELECT "[name], [height] FROM myTable")
so I get a return of data?
So, in an effort to be perfectly clear: I have an app that creates a csv with the column headers [name] and [height] in a table called myTable, and for the life of me I can't figure out how to return [name] and [height] specifically.
I'm trying to make a database program in VB 2008 and have come across a problem with a query that I'm not sure how to solve. I have a combo box which contains names of teams that are held within the database, when a team name is selected I have 4 queries that will separate players (in that team) by their position, using this information I will then be able to display information about the players in a collection objects so that it can be edited and what not.
My problem is that I need to be able to refer to the records in the query so that I can assign a players details to objects on the form, I've used a piece of code to do so that I used previously to select individual records from a table, however when I click on a team in the combo box it throws up the error: "Could not format node 'ClientQuery' for execution as SQL.". Not being a particularly experienced VB programmer this error doesn't exactly mean too much to me, although I am not exactly sure of another way to tackle the problem.
The code for this query is:
Dim GK(3, 2) As String
Dim c As Integer = 0
For Each Record In GoalkeeperQuery
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All the fields in the query are strings. If this is not enough information I can post the query I used to select the records in the query used above or anything else that's related.
If I run a MySQL query at the same time I have a timer going, the timer lags, even though the query is on a seperate form. My computer has 8GB of RAM, so I doubt that that's the issue. Does VB stop the timer to run the query intentionally? Is there a way to prevent the timer from stopping/ lagging?
View 10 RepliesI'm trying to run a MySQL Query, but I keep getting a syntax error for this.[code]...
View 3 RepliesI have a Microsoft Access database that I connect to with the Jet Database Engine, using VB.NET. I want to programmatically get all of the column names for a particular table [code]...
Is this possible in Access? If not, what are my options for getting the column names?
With vb.net 2008 exp + MySQL 5.0
i am unable to get the data from a query / SP created in the database.
kindly have some patience to teach me what basically makes difference in extracting data from a table directly and from a QUERY / SP[code]....
My problem is, when I query by a usual ID, like number with no segments = 1234567890, it works nicely.
But I need to query by some kind of segmented values or ID as = 123-4567-890, when I try by 123-4567-890 this id it does not query anything in mysql although in the database this 123-4567-890 ID is present.
So what is the possible solution to search by segmented value in mysql in VB.NET Here is below, my trying codes in vb
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Is there a way to use Meta Tales or Table names to Construct a dynamic query in LINQ?
foreach (var metaTable in db.Mapping.GetTables())
{
var queryType = metaTable.RowType.Type;
[code]....
Is there a way to do something like this? The attempt above yields the error:Could not find an implementation of the query pattern for source type 'System.Data.Linq.ITable'. 'Select' not found. Consider explicitly specifying the type of the range variable 'q'.
So I'm working with a mysql database, and I already have some queries down. I have to make a windows application form in vb.net that can display the results of these queries in a dataGridView.Lets say I'm working with frm1, and i have datagrid1 which will be filled using the query "select * from xyz" when btn1 is clicked.Can someone please take me through the right steps to do that? References needed, connections to be made, etc. I did look through online materials, but they are mostly way too long and not dataGridView specific
View 2 RepliesI am trying to to an insert query on my MySql db using VS 2008/VB. I have this query: Insert into allservices StartDate....) values ('" & Me.datesched.Value & "', ....) When I use the single and double quotes, as it is above , I get this error: Quote: Incorrect date value '21/10/2009' for column StartDate at row 1
when I remove the single quotes and have only the double ones I get a completely different thing. The date inserted to the database is 01/01/0001. Even if my datetimepicker has a min and max date. Also if someone has any good links on using mysql with vb.net
I am using VB to query a MySQl database and populate an Excel spreadsheet. All is working well, but now I would like to start distributing the spreadsheet shroughout the company and cannot protect it.If I protect the spreadsheet the VB cannot add the MySQL data, so I added an unprotect line at the start of the code. That works well, but now the sheet is
'Unprotect all sheets
Dim WSheet As Worksheet
For Each WSheet In Worksheets
[code]....
I'm trying to write my very first "serious" program using a mysql database. I use the mysql connecter dll to connect with my database. I have a subject and a visit table. I can select a subject and I can get all the visits for all subjects in a list box with:
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I am new in VB.NET. Can any tell me how a richtextbox query MySQL table. i.e select * from table test where name= 'Bowser' then the richtextbox will display the results.
View 3 RepliesI'm just wondering if it's possibe to get the results from a query and then assign the results to a variable. So I will run a query which will return the names of the tables stored in the database, then I want them to be stored in a variable. So it would be something along the lines of:
Dim strFrom AS String = "FROM "
strQuery = "SELECT * FROM information_schema.TABLES WHERE TABLE_SCHEMA = 'Database1'"
con.Open()
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I am finding it exceptionally difficult to pass an sql query result (string) into a variable.No matter what I try, I can't seem to get anything but boolean output from my reader function.I need to obtain staff "account type" from my staff table and then define that account type in a variable.
View 1 RepliesI 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.
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I want to create 1000 MySQL database on a hosting server & add 1 single user in all of them with all privileges enabled,Now I know how to create a database from MySQL query, But what I can not find is "how to add a user in the database",For example: create database 1a;This will create the database, but with the creation of the database I also want to add a user in that database from the same MySQL query, or another query to run with it, but I want both operation to run at the same time.
View 1 RepliesTrying to do a mysql parametrized query and i'm having a little issue.
cmd = conn.CreateCommand
cmd.CommandText = "insert into `rootforest` (rootforestname, BusinessName) VALUES (?rfname, ?bname)"
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It errors on the executenonquery. Says the column rootforestname can not be null. i don't under stand why it does not fill in the value in the command text.
i have a column that i want to select from a table called style_number
each entry is listed as "something-stylenumber"
is there a way to strip everything from the - and to the left from the string when it is returned from mysql?
SELECT style_number FROM table1
I do not want to have to use vb.net to edit the returned string for each line that is pulled
i am trying to insert/save the listview item/s on the database.what i am trying to do now is if the product is being entered/saved for the first time.the fcode should be 1, and increments after that.i have a combo box and a text box.the combo box items are from the database [ product table ]
let say user choose product 1
and the list view has 2 items [ a, b ]
and then save
the table would look like
fcode -- prod_id -- prod_name -- item
1 1 product 1 a
1 1 product 1 b[code]......
My DATE field always display with time in vb.net is there a select query to format it into yyyy-MM-dd?
View 3 Replieshow to input data in mysql, different tables with one query?is it possible to do in gridview in vb.net 2008?
View 4 Repliesi'm trying to populate a simple combobox with a query to a MySql database. I Just want the combobox to show the results of the query:
SELET DISTINCT models from Cars
I am using VB 2008 with Datasets, how can I achieve this?
this is the code for my save button
Dim iCount As Integer
Dim iLoop As Integer
Dim query3 As New MySqlCommand
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every time i hit save, there is no error but it does not save on my database.
here is my code
Dim lvitem
Dim iCount As Integer
Dim iLoop As Integer
[code].....