How to update rows in DataView
The DataView provides different views of the data stored in a DataTable. DataView can be used to sort, filter, and search a DataTable , additionally we can add new rows and modify the content in a DataTable. We can create DataView in two ways. Either we can use the DataView constructor, or we can create a reference to the DefaultView property of the DataTable. Also we can create multiple DataViews for any given DataTable.
We can update the data in a DataView . The following source code shows how to update data in a DataView . Create a new VB.NET project and drag a DataGridView and a Button on default Form Form1 , and copy and paste the following Source Code on button click event.
Imports System.Data.SqlClient
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim connetionString As String
Dim connection As SqlConnection
Dim command As SqlCommand
Dim adapter As New SqlDataAdapter
Dim ds As New DataSet
Dim dv As DataView
Dim sql As String
connetionString = "Data Source=ServerName;Initial Catalog=DatabaseName;User ID=UserName;Password=Password"
sql = "Select * from product"
connection = New SqlConnection(connetionString)
Try
connection.Open()
command = New SqlCommand(sql, connection)
adapter.SelectCommand = command
adapter.Fill(ds, "Update")
adapter.Dispose()
command.Dispose()
connection.Close()
dv = New DataView(ds.Tables(0), "", "Product_Name", DataViewRowState.CurrentRows)
Dim index As Integer = dv.Find("Product5")
If index = -1 Then
MsgBox("Product not found")
Else
dv(index)("Product_Name") = "Product11"
MsgBox("Product Updated !")
End If
DataGridView1.DataSource = dv
Catch ex As Exception
MsgBox(ex.ToString)
End Try
End Sub
End Class |
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