I have worked out how to get the MySql data into the dataset:Dim DataSet_1 as New DataSet()
Dim SQL_Cmd_1 as New MySqlCommand("Select * from Table where feild = X")
Dim SQL _Dat_Adapter_1 as New MySqlDataAdapter (SQL_CMD_1)
SQL_Cmd_1.Connection = New MySqlConnection("server=localhost;user id=user;password=pwd;database=db")
SQL_Cmd_1.Connection.Open()
'MessageBox.Show("Connection Opened Successfully")
SQL_Dat_Adapter_1.Fill(DataSet_1)
SQL_Cmd_1.Connection.Close()
If the query returns 8 column values and I want to read those values into 8 feilds on a windows form - How do I do it?
I have created a .xsd dataset using the visual studio installed template ->DataSet. nothing programmitcally rather it was using the toolbox and creating various DataTable. how do I retrieve the data once it is assigned programmitcally.
Heres my issue, I am retrieving data from xml and populating a DataSet with the results into multiple DataTables but i have an issue where an item is repeated in my input data and it is causing it to exception because of the constraints imposed between these tables. how can i determine if a row exists prior to adding the DataRow and thus not include it in my DataTable?
I have a question, i need to store the value of richtextbox to MySQL and retrive the value from MYSQL to richtextbox. can you give me a code in vb.net? and will the formating be affected like the font and alignment?
I am trying to update mysql table from a txt file using vb.net. So far I've found code here and there and been able to extract the data from the txt file, now my question is how to update mysql from the same dataset or xml file. Here is my code to populate the datagrid/dataset/xml file.what is the easiest way to update mysql assuming "Orden" is my primary key in mysql.
My connection that I am using is via connection string, so there's no dataset that will be created for the datasource. How can i create one for this type of connection?
I've been working with a remote mysql database. The design of the database pretty much requires that I use SELECT commands that include multiple tables, and sometimes joins. Updating a single table query is SO EASY, yet dealing with multiple tables has me pulling my hair out.
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What's killing me is that if I make a change to a field in the products table in the datagridview and press button1, the changes are saved. If I make a change to a field in the specials table in the datagridview and press button2, the changes are saved. If I combine the two updates together in a single routine, only the first one is saved. I presume this is because after the first update executes, the dataadapter no longer reports that there are any changes to save, since the update already happened.
I've tried breaking this up into separate dataadapters for each table, but then even using dataset relations, I can't get the data together in a single datagridview. On top of that, the grid itself is only intended to be used for searching and querying data. It still needs to be bound along with a set of textboxes that accept the input.
Lastly, this database is part of an ever-evolving website database with dozens of tables that need interfacing. I just can't see manually maintaining hand written sql statements for every table. That's why I've been working so hard to get the commandbuilder to handle it.
I want to load an xls file to dataset, edit the data, and import them in mysql. My problem is that I can't load the file. It seems like it ignores the file completely.
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmd1.Click Dim MyConn As OleDbConnection Dim myPath As String = "C:TempManinLottery2009.xls" MyConn = New OleDbConnection("provider=Microsoft.Jet.OLEDB.4.0; data source='" & myPath _ [Code] .....
I'm loading a table from a MySQL-server, which loads fine, but I also get the following error: Error 5: Index was out of range, Must be non-negatives and less then the size of the collection. Parameter name: index
This is how I load the database: vb.net mysqlAdapter.SelectCommand = mysqlComm mysqlAdapter.Fill(mysqlTable) mysqlReader = mysqlComm.ExecuteReader
While mysqlReader.Read sbar_progress.Value += 1 beslag_dg_beslag.DataSource = mysqlTable End While
I'm using a mysql as my backend database and i'm using the mysqldata adapter for binding the data, i have my data in the database, but the problem is i don't know how to retrieve it, for example when i want to add a record, before i add that record, i want to retrieve the data in my database to trap that the record i'm adding is an existing record
I have tried everything I can to get beyond this error which shows below as <<<<< error here. It is trying to fill a dataset from a data adapter. If I change the SELECT statement to just SELECT * FROM xTable I get the correct number of records in each table. But anytime I try with a more complex statement I get the error message shown below which indicates System.Data.Common.DbDataAdapter.Fill(DataSet dataSet. I've completely erased all data and entered a new set of test data so I know there is no problem with relationships. Each table has primary key which is foreign key in other table. IS there something wrong with the Imports section: Imports System
i am trying to copy data from a standard Dataset to a Type Dataset (XSD) of same table structure. i want to use Automapper to do that one. So how can i do that using automapper?
I have two Datagrids, One grid has all the customers garments on it with style number and contact length. The other grid has the users who have garment issued to them. the style number is in both grids. I need to loop through the users grid and say if the contract number is 1 from the first grid then the contract date on the second grid will be todays date + 365 days (year contract) I have looked at using a stored procedure and also a for each command but I am just getting stuck with it all. [Code]
I got a weird problem here like I got a site that users can post comments on a friend profile page.Everytime a user post a comment my application sends e-mail to that page owner, you know to inform for a new posted comment on his/her profile page.The problem is I want to stop the application from sending email if that user has just recently posted a comment say like 5 hours ago/earlier.Here is the function I use that would try to check it:
I have MSaccess database.I have 2 tables 1) CUSTOMER TABLE=----CUSTOMER ID-Primary --AUTO NUMBER2) ORDER TABLE =----(CUSTOMER ID--Foreign KEY) Now From the front end using VB.net I have an page in which if i enter Customer details and press button add .I have to INSERT into values into CUSTOMER TABLE and I Also at the same time INSERT into ORDER TABLE with this CUSTOMER ID which i generated now.How is it possibl
I am trying to retrieve the data in a DataGridView and display it in a RichTextBox.
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This pulls the data from the first row only though, i want to be able to pull the information form each row and display it on a new line? So if there are 8 rows there will be 8 lines of text with the same values as set in the DataGridView?
I'm making a timer program, that I want to be able to store "unlimited" timer profiles, that someone can load and use. Now I've created a form that you fill with data, which then gets saved to a .xml file in a pre-defined directory. I'm now working on some sort of code that will:
1. Search the directory for .xml files
2. Find any .xml files and convert names to strings
3. Store the strings in a dropdown menu, so that when one is chosen, it loads that profile.
I think I have 1 down:
System.IO.Directory.GetFiles("C:Simple Timer") Dim di As DirectoryInfo di = New DirectoryInfo("C:Simple Timer") di.GetFiles("*.xml")
Below is my code for login page I would like to show login user detail on home. For login my code works properly but does not show currently login user show following error "NO data exists for column/row".
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Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Login.Click RetrieveUserPass() End Sub
I Want to Display Content of Database Into TextBox,i.e. i have column named "Ename" in "EMP" table of database1 ,now i want to display "Ename" in TextBox of my form , so, how can i do this ?
