Using a Web Service in VB.net
By: Steven Holzner
To make use of a Web service, you have to add a Web reference to your application. Here is the code for the WebServWindowsApplication application, Form1.vb:
Public Class Form1
Inherits System.Windows.Forms.Form
#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.ComponentModel.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 DataSet11 _
As WebServWindowsApplication.localhost.DataSet1
Friend WithEvents Button1 As System.Windows.Forms.Button
Friend WithEvents Button2 As System.Windows.Forms.Button
<System.Diagnostics.DebuggerStepThrough()> Private Sub _
InitializeComponent()
Me.DataGrid1 = New System.Windows.Forms.DataGrid()
Me.DataSet11 = New WebServWindowsApplication.localhost.DataSet1()
Me.Button1 = New System.Windows.Forms.Button()
Me.Button2 = New System.Windows.Forms.Button()
CType(Me.DataGrid1, _
System.ComponentModel.ISupportInitialize).BeginInit()
CType(Me.DataSet11, _
System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'DataGrid1
'
Me.DataGrid1.DataMember = "authors"
Me.DataGrid1.DataSource = Me.DataSet11
Me.DataGrid1.HeaderForeColor = _
System.Drawing.SystemColors.ControlText
Me.DataGrid1.Location = New System.Drawing.Point(16, 56)
Me.DataGrid1.Name = "DataGrid1"
Me.DataGrid1.Size = New System.Drawing.Size(264, 176)
Me.DataGrid1.TabIndex = 0
'
'DataSet11
'
Me.DataSet11.DataSetName = "DataSet1"
Me.DataSet11.Locale = New System.Globalization.CultureInfo("en-US")
Me.DataSet11.Namespace = "http://www.tempuri.org/DataSet1.xsd"
'
'Button1
'
Me.Button1.Location = New System.Drawing.Point(16, 16)
Me.Button1.Name = "Button1"
Me.Button1.Size = New System.Drawing.Size(96, 23)
Me.Button1.TabIndex = 1
Me.Button1.Text = "Get Data"
'
'Button2
'
Me.Button2.Location = New System.Drawing.Point(184, 16)
Me.Button2.Name = "Button2"
Me.Button2.Size = New System.Drawing.Size(96, 23)
Me.Button2.TabIndex = 2
Me.Button2.Text = "Update Data"
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 253)
Me.Controls.AddRange(New System.Windows.Forms.Control() _
{Me.Button2, Me.Button1, Me.DataGrid1})
Me.Name = "Form1"
Me.Text = "Form1"
CType(Me.DataGrid1, _
System.ComponentModel.ISupportInitialize).EndInit()
CType(Me.DataSet11, _
System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
Dim WebServ As New WebServWindowsApplication.localhost.Service1()
DataSet11.Merge(WebServ.GetAuthors())
End Sub
Private Sub Button2_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button2.Click
If DataSet11.HasChanges() Then
Dim WebServ As New _
WebServWindowsApplication.localhost.Service1()
Dim Changes As New _
WebServWindowsApplication.localhost.DataSet1()
Changes.Merge(DataSet11.GetChanges())
DataSet11.Merge(WebServ.UpdateAuthors(Changes))
End If
End Sub
End Class
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