Add new row commandbuilder vb.net
In VB.NET, you can use the CommandBuilder
class to generate SQL commands for inserting, updating, and deleting data. To add a new row using CommandBuilder
, you can use the InsertCommand
property.
Here's an example:
Imports System.Data.SqlClient
' Create a connection to the database
Dim conn As New SqlConnection("Data Source=myserver;Initial Catalog=mydatabase;User ID=myuser;Password=mypassword;")
conn.Open()
' Create a data adapter
Dim da As New SqlDataAdapter("SELECT * FROM mytable", conn)
' Create a command builder
Dim cb As New SqlCommandBuilder(da)
' Add a new row
Dim newRow As DataRow = da.Table.NewRow()
newRow("Column1") = "New value"
newRow("Column2") = "Another new value"
da.Update(newRow)
' Close the connection
conn.Close()
In this example, we create a SqlConnection
object to connect to the database, a SqlDataAdapter
object to retrieve data from the database, and a SqlCommandBuilder
object to generate SQL commands for inserting, updating, and deleting data.
We then create a new row using the NewRow
method of the DataTable
object returned by the Table
property of the SqlDataAdapter
object. We set the values of the columns in the new row using the Item
property of the DataRow
object.
Finally, we call the Update
method of the SqlDataAdapter
object to insert the new row into the database. The CommandBuilder
object generates the necessary SQL command to insert the new row.
Note that the CommandBuilder
object generates a SQL command that is specific to the database provider being used (in this case, SQL Server). The generated command will be in the format of the database provider's default SQL dialect.
Also, if you want to add a new row with a specific primary key value, you can use the InsertCommand
property of the CommandBuilder
object to specify the primary key value. For example:
cb.InsertCommand = "INSERT INTO mytable (Column1, Column2) VALUES (@Column1, @Column2)"
cb.InsertCommand.Parameters.AddWithValue("@Column1", "New value")
cb.InsertCommand.Parameters.AddWithValue("@Column2", "Another new value")
da.Update(newRow)
This will insert a new row into the database with the specified primary key value.