VB.Net/Database ADO.net/Sql Data Adapter
Set SqlDataAdapter Update Batch Size
<source lang="vbnet"> Imports System Imports System.Data Imports System.Windows.Forms Imports System.Data.SqlClient Imports System.IO public class MainClass
Shared Sub Main() Dim form1 As Form = New Form1 Application.Run(form1) End Sub
End Class Public Class Form1
Inherits System.Windows.Forms.Form Private cb As SqlCommandBuilder Private da As SqlDataAdapter
- Region " Windows Form Designer generated code "
Public Sub New() MyBase.New() "This call is required by the Windows Form Designer. InitializeComponent() "Add any initialization after the InitializeComponent() call End Sub "Form overrides dispose to clean up the component list. Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean) If disposing Then If Not (components Is Nothing) Then components.Dispose() End If End If MyBase.Dispose(disposing) End Sub "Required by the Windows Form Designer Private components As System.ruponentModel.IContainer "NOTE: The following procedure is required by the Windows Form Designer "It can be modified using the Windows Form Designer. "Do not modify it using the code editor. Friend WithEvents DataGrid1 As System.Windows.Forms.DataGrid Friend WithEvents buttonUpdate As System.Windows.Forms.Button Friend WithEvents DataSet1 As System.Data.DataSet Friend WithEvents SqlCommand1 As System.Data.SqlClient.SqlCommand <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent() Me.DataGrid1 = New System.Windows.Forms.DataGrid Me.buttonUpdate = New System.Windows.Forms.Button Me.DataSet1 = New System.Data.DataSet Me.SqlCommand1 = New System.Data.SqlClient.SqlCommand CType(Me.DataGrid1, System.ruponentModel.ISupportInitialize).BeginInit() CType(Me.DataSet1, System.ruponentModel.ISupportInitialize).BeginInit() Me.SuspendLayout() " "DataGrid1 " Me.DataGrid1.DataMember = "" Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText Me.DataGrid1.Location = New System.Drawing.Point(8, 8) Me.DataGrid1.Name = "DataGrid1" Me.DataGrid1.Size = New System.Drawing.Size(400, 192) Me.DataGrid1.TabIndex = 0 " "buttonUpdate " Me.buttonUpdate.Location = New System.Drawing.Point(171, 208) Me.buttonUpdate.Name = "buttonUpdate" Me.buttonUpdate.TabIndex = 1 Me.buttonUpdate.Text = "Update" " "DataSet1 " Me.DataSet1.DataSetName = "NewDataSet" Me.DataSet1.Locale = New System.Globalization.CultureInfo("en-GB") " "Form1 " Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13) Me.ClientSize = New System.Drawing.Size(416, 245) Me.Controls.Add(Me.buttonUpdate) Me.Controls.Add(Me.DataGrid1) Me.Name = "Form1" Me.Text = "Form1" CType(Me.DataGrid1, System.ruponentModel.ISupportInitialize).EndInit() CType(Me.DataSet1, System.ruponentModel.ISupportInitialize).EndInit() Me.ResumeLayout(False) End Sub
- End Region
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load "Create Connection object Dim thisConnection As New SqlConnection("server=(local)\SQLEXPRESS;" & _ "integrated security=sspi;database=MyDatabase") " Sql Query Dim sql As String = "SELECT * FROM Employee" " Create a Command SqlCommand1 = New SqlCommand(sql, thisConnection) " Create SqlDataAdapter da = New SqlDataAdapter da.SelectCommand = SqlCommand1 " Create SqlCommandBuilder object cb = New SqlCommandBuilder(da) " Fill Dataset da.Fill(DataSet1, "Employee") " Bind the data to the grid at runtime DataGrid1.SetDataBinding(DataSet1, "Employee") End Sub Private Sub buttonUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles buttonUpdate.Click da.UpdateBatchSize = 10 da.Update(DataSet1, "Employee") End Sub
End Class
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SqlDataAdapter Event: updated and updating
<source lang="vbnet"> Imports System Imports System.Data Imports System.Data.SqlClient
public class MainClass
Shared Sub Main() Dim thisConnection As New SqlConnection("server=(local)\SQLEXPRESS;" & _ "integrated security=sspi;database=MyDatabase") Dim sql As String = "SELECT FirstName, LastName From Employee" Try thisConnection.Open() Dim thisAdapter As New SqlDataAdapter(sql, thisConnection) Dim cb As New SqlCommandBuilder(thisAdapter) Dim ds As New DataSet thisAdapter.Fill(ds, 0, 1, "Customers") AddHandler thisAdapter.RowUpdating, AddressOf OnRowUpdating AddHandler thisAdapter.RowUpdated, AddressOf OnRowUpdated Dim dt As DataTable = ds.Tables("Customers") dt.Rows(0)(1) = "The Volcano Corporation" thisAdapter.Update(ds, "Customers") RemoveHandler thisAdapter.RowUpdating, AddressOf OnRowUpdating RemoveHandler thisAdapter.RowUpdated, AddressOf OnRowUpdated Catch ex As SqlException Console.WriteLine(ex.Message) Finally " Close Connection thisConnection.Close() End Try End Sub " Handler for OnRowUpdating Shared Private Sub OnRowUpdating(ByVal sender As Object, ByVal e As SqlRowUpdatingEventArgs) Console.WriteLine("OnRowUpdating Event") If Not e.Status = UpdateStatus.Continue Then Console.WriteLine("RowStatus = " & e.Status.ToString()) End If End Sub " Handler for OnRowUpdated Shared Private Sub OnRowUpdated(ByVal sender As Object, ByVal e As SqlRowUpdatedEventArgs) Console.WriteLine("OnRowUpdated Event") Console.WriteLine("Records Affected = " & e.RecordsAffected.ToString()) End Sub
End Class
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