I need to copy all data from a Table of a Acces mdb (connected with OleDB) to a Table of a MySql DB (connected with ODBC)
I made a working solution, but it's very slow, and so I want to try other solutions to check if they can give me more performance.
The solution connecting to the mdb, using a DataReader, then for each row in Datareader I make an INSERT into the Mysql Table ( before copy I truncate the table to get it empty)
The records are more than 10K and this operation is very slow, and do be onest I need to do the same thing on other 2 tables also very big as this one.
I cannot make a direct sql insert ( as INSERT INTO A in ..... SELECT * FROM B) because the 1 DB has a OleDB conn and the other has a ODBC conn.
So I thought to try to make this operation using TableAdapters and DataSet, but I'm not able to make it working.
The problem is that the Dataset's HasChanges is false
If you need some code I can post, but what I do is following:
Connection to MDb
Create OleDbTableAdapter
Create DataSet
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?
When i copy a table into DataSet is it possible to copy its index's as well? right now i add kinda big table (250k + rows) into dataset and i need to query that DataSet table in my application, the problem is that in some quires it's getting slow.what is the right approch to solve this problem?
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
Basically i have a form with a sqldataadapter and a dataset to retrieve and process data. from within the form i call another form which i use to retrieve data given some criteria which my user enter (on the secord form i also use a sqldataadapter and dataset.my problem is this: the use can select 1 or more records from the second form which he or she wants to process and the logic is to jump back to the first form and show only those records. note: the secord form (search data form) can display any number of records
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 have a dataset (WW1Dataset) with one data table(WW1).(database used in an access database) I'm trying to filter the dataset e.g a user wants to filter by a chosen surname (SurnameTextBox.text) so the datset is filtered to display only those records wherethe surname column in the dataset matches SurnameTextBox.text.
I have a situation where I serialized data from a dataset to an xml file as a method of backup.I am trying to get the data deserialized back to the dataset.But for some reason, I cannot get the data to persist back to the DB.I don't receive any error messages either.The first chunk of code is the serialization code and the second chunk is the deserialization code.I can show that the deserialization back to the dataset is complete because this code in the 2nd block DataGridView2.DataSource = Movie_dbDataSet.movie_tb - displays the data in correct form all it is all there in the datagridview2.I call the update method but it does not get persisted back to the db.[code]
when i try to insert data from database into dataset using data adapter, it takes long time, i want to use hourglass but i'm confused how or when i type the code so user will know that application still work.
Using a dataset, I wanna get data from a table, and use some values of the dataset return, in other fields.
I use this Dim ConexaoBD As OleDbConnection Dim DsDados As DataSet Dim sqlString As String = "SELECT dias FROM varroa WHERE ID=" & cbProduto.SelectedValue MsgBox(sqlString)
I have to query one table and insert the result in a table on another database in another server The query is "select ID, name from Table" The other table exists and have the same fields. How can I do this?
I am trying to copy stored Employee id and i want to show it on a customer registration form. Basically i want to show which employee severd which customer. [code]...
I have 7 variables and i need to transfer them in a dataset I have already create the file with extension .xsd and i have already a report file .rdlc I see the Dataset "DataTable"in my rdlc file but i can't see any field It gives me error of "No Dataset is Linked to the document" From the other hand it sees the dataset in the selection dataset
I created a dataset in Visual Studio 2010 containing two tables: tblCategories and tblAnswers. tblCategories has two columns: CategoryNumber (AutoNumber and primary key) and CategoryName. tblAnswers has three columns: AnswerNumber (AutoNumber and primary key), Answer, and CategoryNumber. The CategoryNumber columns in each table are related. I have a command button which I want to use to add a record to the CategoryName column in tblCategories with the data typed in a textbox. When I try to access the dataset to add a new row(dataset.tblCategoriesDataTable.NewRow), the NewRow method isn't present. I've done some reading which suggests that I need a TableAdapter, but it seems like that is for connecting to an external file because I have to select a connection. I have no external SQL files or database. I want the user to be able to create a database within my program.
I am using more than 4 tables to retrive data, I have created dataset called P_search and i want to fill data into dataset and thsn display it according to which field is selected for search purpose. Suggest me to write code by creating own function in which all fields and a boolean variable will be taken as parameters
I have added a DataSet to connect with my SQLDatabase. Test Query displays correct values but when I programmatically try to display the value of a certain field using following code
dim vrName= dsTest.Tables(tblTest).rows(0).items(0)
I get Tables is not a member of dsTest.
how can I use dataset to read, write, edit and delete data as we use in WinForms?
How do you plot data from a dataset or datatable. I have loaded a dataset with data from the database and now cannot do the plotting. When I tried: myChart.dataContext=ds("myTable").defaultView, no chart shows. If I replace: dataContext with: dataSource, I get an error. I am using WPF not Windows Forms.
I have a very simple DataSet linked to a ListBox. I need the User to be able to add Data and have used the following code (in a ToolStrip command button):
Dim newFileRow As DataRow = Database1DataSet.Tables("tbl_Files").NewRow() newFileRow("File Name") = fleName newFileRow("File Path") = flePath
[Code]....
This seems to work ok - the new Data immediately appears in the ListBox. However, as soon as I close the form all of the Data in the DataSet is lost.
I have a database with a Student table and a Class table. There are many students and many classes and each student is a member of a class.I then have a windows form that needs to display a list of student names in a listbox. However, I have a different form for each class. So for example in this form I have coded below, I need to display all students that are members of class51. The code I have so far is reading in all students from tblStudent and this is not what I want. I know that if I was doing SQL or something I'd simply write SELECT * FROM TBLSTUDENT WHERE CLASSID =his?
Private Sub frmAttendace51_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load 'clear data set of any existing data
At moment iam getting information back by fireing a command to an API function of a program (http) after that it gives me databack and i transfer that data in a dataset. so far so good its working great.
But now i want to have specific data out of that dataset....
i know the rows got names inside the DS one is ID NAME and TYPE
What i want to know is there a way to get TYPE out of the Dataset WHERE name is .... (does not mather what name)
I have created a table in a dataset and inserted data through for...loot statement. but i want to sorting or ordering data on a particular field. How it to be possibel please give some tips.
In addition to that when I add column in a table I mention only column name, but I can't maintion field type or data type. when I mentioing it gives a error. so only I have had to work on only filed name.
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.
I am currently having a few issues saving new information to a dataset. I could update the set, but on exiting and reopening the data all updates were gone. I found a few tips online but now get error messages when running the update command. This is how the code looks at present.
I need a little guidance in the right direction to help with using data from a dataset in calculations. I've watched the "How Do I" Series and it was very helpful in setting up the relations and tables. I have setup a couple tables to hold values that won't be updated and the user will never see. Lets say I have 5 columns, ColmnA to ColumnE, and the row count is variable. What I can't seem to find is an easy way to loop through using the variables. As an example, Lets say the equation would be outputted to a textbox:
textbox1.text=row1(ColumnA*ColumnB+ColumnC^ColumnD-ColumnE)+row2(ColumnA*ColumnB+ColumnC^ColumnD-ColumnE)+etc to end of rowcount
Does anyone know if a good tutorial to point me in the right direction or a code snippet that may get me started to follow the logic? I'm using VS2010Express with a SQLExpress database if that helps.
