Updating dataset in vb net

Posted by / 03-Oct-2020 07:16

Updating dataset in vb net

You can even enforce data integrity using the Unique Constraint and Foreign Key Constraint objects. The simple example below uses only one table, but you can use multiple tables from different sources if you need them. To insert, update, and delete data using a Data Adapter, you create an Ole Db Command object with INSERT, UPDATE, and DELETE statements and set the Insert Command, Update Command, and Delete Command properties of the data adapter to Ole Db Command.You can avoid building Command objects manually by using Command Builder.I am pulling data from 1 database(QAD) into a Data Set. Open() sql String = "" sql String = "SELECT Inventory_Number, Status, drwg_size FROM Inventory_Test" Inventory_Test = New Sql Data Adapter(sql String, obj Conn) QADStatus = New Data Set QAD. Fill(QADStatus, "Inventory_Test") Dim QADtable As Data Column Dim Inven Table As Data Column Dim data_relation As Data Relation QADtable = QADStatus. I need help trying to Update a table in a different database(Inventory_Test) with the data collected in the Data Set. Load Dim connection String As String connection String = "My connection to QAD Database" Dim obj Conn As New Sql Connection(connection String) obj Conn. Columns("Inventory_Number") data_relation = New Data Relation("QADto Inventory_Test", QADtable, Inven Table) QADStatus. I know to first research before posting a question... Data Source = QADStatus End Sub Private Sub Button1_Click(sender As System. Would you like a screen shot on my HISTORY/Cookies...

Data Relation Public Class Form1 Private QAD As Sql Data Adapter Private Inventory_Test As Sql Data Adapter Private QADStatus As Data Set Private Sub Form1_Load(By Val sender As System. Open() Dim sql String As String sql String = "" sql String = "SELECT PT_Part, PT_STATUS, PT_DRWG_SIZE FROM PT_MSTR" QAD = New Sql Data Adapter(sql String, obj Conn) connection String = "" connection String = "My Connection to Inventory_Test Database" obj Conn = New Sql Connection(connection String) obj Conn. I just need to know how to take the data from the Data Set(QADStatus) into Database2(PT_MSTR_TEMP). The Find method returns the row with Customer Id = Tst ID.After that I assign values of the row and call the Data Adapter's Update method. Updating data using the Data Adapter's Update method Deleting a row is simple. This object reads the database and creates an in-memory copy of that part of the database that your program needs. In addition to being reliable and easy to use, Data Set supports both a hierarchical view of the data as XML and a relational view that you can manage after your program disconnects.

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If you need to update the database after changing the Data Set, you can use the Update method of the Data Adapter object, but you have to make sure that the Data Adapter properties are set correctly with Sql Command objects. Data Adapter figures out what has changed and then executes an INSERT, UPDATE, or DELETE command, but as with all database operations, updates to the database can run into problems when the database is being updated by other users, so you often need to include code to anticipate and solve problems when changing the database. If you need a collection and you're serializing the data, a Data Set is the tool to use.

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