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Exposing Custom-made Classes through a Webservice and Binding them to a DataGrid.

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26 Feb 200311 min read 345.2K   1K   124  
How to expose custom-made classes through Webservice and bind them to datagrid
When you want to expose your custom made business objects through a webservice interface, and you want them to bind with a DataGrid, you have a problem that the generated proxy class exposes fields instead of properties. A possible solution is to generate at runtime, a wrapper for your proxy class.
Imports Leadit.Utils.WebServices
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 Button1 As System.Windows.Forms.Button
    Friend WithEvents DataGrid2 As System.Windows.Forms.DataGrid
    Friend WithEvents Label1 As System.Windows.Forms.Label
    Friend WithEvents Label2 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.DataGrid1 = New System.Windows.Forms.DataGrid()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.DataGrid2 = New System.Windows.Forms.DataGrid()
        Me.Label1 = New System.Windows.Forms.Label()
        Me.Label2 = New System.Windows.Forms.Label()
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).BeginInit()
        CType(Me.DataGrid2, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'DataGrid1
        '
        Me.DataGrid1.CaptionVisible = False
        Me.DataGrid1.DataMember = ""
        Me.DataGrid1.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid1.Location = New System.Drawing.Point(0, 24)
        Me.DataGrid1.Name = "DataGrid1"
        Me.DataGrid1.Size = New System.Drawing.Size(608, 144)
        Me.DataGrid1.TabIndex = 0
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(408, 360)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(192, 23)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Retrieve items from Webservice"
        '
        'DataGrid2
        '
        Me.DataGrid2.CaptionVisible = False
        Me.DataGrid2.DataMember = ""
        Me.DataGrid2.HeaderForeColor = System.Drawing.SystemColors.ControlText
        Me.DataGrid2.Location = New System.Drawing.Point(0, 208)
        Me.DataGrid2.Name = "DataGrid2"
        Me.DataGrid2.Size = New System.Drawing.Size(608, 144)
        Me.DataGrid2.TabIndex = 0
        '
        'Label1
        '
        Me.Label1.AutoSize = True
        Me.Label1.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label1.ForeColor = System.Drawing.Color.Red
        Me.Label1.Location = New System.Drawing.Point(0, 8)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(210, 13)
        Me.Label1.TabIndex = 2
        Me.Label1.Text = "Without using the WebServiceWrapper:"
        '
        'Label2
        '
        Me.Label2.AutoSize = True
        Me.Label2.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Label2.ForeColor = System.Drawing.Color.Green
        Me.Label2.Location = New System.Drawing.Point(0, 192)
        Me.Label2.Name = "Label2"
        Me.Label2.Size = New System.Drawing.Size(169, 13)
        Me.Label2.TabIndex = 2
        Me.Label2.Text = "Using the WebServiceWrapper:"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(608, 389)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label1, Me.Button1, Me.DataGrid1, Me.DataGrid2, Me.Label2})
        Me.Name = "Form1"
        Me.Text = "WebServiceWrapper Demo: CodeProject Monitor"
        CType(Me.DataGrid1, System.ComponentModel.ISupportInitialize).EndInit()
        CType(Me.DataGrid2, 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 latestBrief As New com.codeproject.www.LatestBrief()

        'Do not use the WebServiceWrapper
        DataGrid1.DataSource = latestBrief.GetLatestArticleBrief(10)

        'Use the WebServiceWrapper
        DataGrid2.DataSource = WebServiceWrapper.GetArrayList(latestBrief.GetLatestArticleBrief(10))
    End Sub
End Class

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