Well, the first thing is that you are really not binding the ICollection to the
datagrid, you are binding the objects in the Collection. So the first thing you need
to know is that when you use DataBinding on a datagrid or any other bindable object is
that it will only bind to Properties instead of Fields. Here is the difference...
Public Class EmployeeBiz
public EmployeeName As String
public EmployeeZip As String
End Class
The above is using "Fields" because the data members are public. Below is an example
of using Properties.
Public Class EmployeeBiz
Private _employeeName As String
Private _employeeZip As String
Public Property EmployeeName as String
Get
Return _employeeName
End Get
Set
_employeeName = value
End Set
End Property
Public Property EmployeeZip as String
Get
Return _employeeZip
End Get
Set
_employeeZip = value
End Set
End Property
End Class
The above class with Public Properties will bind correctly, but the one with Fields
will not.
It is actually amazing that I wrote some VB code.
HTH.
Ben Miller
----- Original Message -----
From: Leela krishna
To: [EMAIL PROTECTED]
Sent: Tuesday, August 17, 2004 8:38 AM
Subject: [AspNetAnyQuestionIsOk] Binding a collection to a datagrid
Hi ,
can anybody help me ?
I am trying Bind a collection to a datagrid.
The test code is as below
" AutoGenerateColumns="false" ShowFooter="true" CellPadding="3" BorderWidth="1"
Height="144px" Width="320px" runat="server">****************************************
" AutoGenerateColumns="false" ShowFooter="true" CellPadding="3" BorderWidth="1"
Height="144px" Width="320px" runat="server"> <asp:DataGrid id="grdEmployees"
style="Z-INDEX: 101; LEFT: 136px; POSITION: absolute; TOP: 72px"
runat="server" Width="320px" Height="144px"
BorderWidth="1" CellPadding="3" ShowFooter="true"
AutoGenerateColumns="false"
datasource='<%#empCol%>'>
<HeaderStyle BackColor="#00aaaa"></HeaderStyle>
<FooterStyle BackColor="#00aaaa"></FooterStyle>
<Columns>
<asp:BoundColumn HeaderText="Employee ID"
DataField="EmployeeID" >
<ItemStyle BackColor="yellow"></ItemStyle>
</asp:BoundColumn>
<asp:BoundColumn HeaderText="Last Name" DataField="LastName" />
<asp:BoundColumn HeaderText="First Name"
DataField="FirstName"></asp:BoundColumn>
</Columns>
</asp:DataGrid>
*************************************
***********************************
Imports System.Collections.Specialized
Public Class WebForm1
Inherits System.Web.UI.Page
Dim col As System.Collections.ICollection
Public empCol As System.Collections.ICollection
#Region " Web Form Designer Generated Code "
'This call is required by the Web Form Designer.
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
End Sub
Protected WithEvents grdEmployees As System.Web.UI.WebControls.DataGrid
'NOTE: The following placeholder declaration is required by the Web Form Designer.
'Do not delete or move it.
Private designerPlaceholderDeclaration As System.Object
Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles MyBase.Init
'CODEGEN: This method call is required by the Web Form Designer
'Do not modify it using the code editor.
InitializeComponent()
End Sub
#End Region
Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles MyBase.Load
'Put user code to initialize the page here
Dim Emp As New EmployeeBiz
Emp = New EmployeeBiz
empCol = Emp.GetEmployees
' grdEmployees.DataSource = empCol
grdEmployees.DataBind()
End Sub
Public Class EmployeeBiz
Public EmployeeID As String
Public LastName As String
Public FirstName As String
Public Function GetEmployees() As Collection
Dim tmpcol As New Collection
Dim Emp As New EmployeeBiz
Emp = New EmployeeBiz
Emp.EmployeeID = "101"
Emp.FirstName = "Leela"
Emp.LastName = "Krishna"
tmpcol.Add(Emp)
Emp = New EmployeeBiz
Emp.EmployeeID = "102"
Emp.FirstName = "Prasanth"
Emp.LastName = "pp"
tmpcol.Add(Emp)
Emp = New EmployeeBiz
Emp.EmployeeID = "103"
Emp.FirstName = "Nisanth"
Emp.LastName = "Kulkarni"
tmpcol.Add(Emp)
Emp = New EmployeeBiz
Emp.EmployeeID = "104"
Emp.FirstName = "Salim"
Emp.LastName = "peerzada"
tmpcol.Add(Emp)
Dim xcol As System.Collections.ICollection
xcol = tmpcol
Return xcol
End Function
End Class
End Class
***************************************
Regards,
Leela Krishna
---------------------------------
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