Hi
I am trying to bind a custom datasource to a gridview whilst paging is
enabled. What is missing in this code to make the paging + binding work?
thanks
M
<%@dotnet.itags.org. Page Language="VB" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Public Class person
Dim _name As String
Public Property Name()
Get
Return _name
End Get
Set(ByVal value)
_name = value
End Set
End Property
End Class
Public Class PersonCollection : Inherits CollectionBase
Sub New()
MyBase.New()
End Sub
Public Property item(ByVal i As Integer)
Get
Return Me.List(i)
End Get
Set(ByVal value)
Me.List(i) = value
End Set
End Property
Public Sub add(ByVal item As person)
Me.List.Add(item)
End Sub
End Class
Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles
Me.Load
If Not IsPostBack Then
GridView2.DataSource = bron()
GridView2.DataBind()
End If
End Sub
Protected Function bron() As PersonCollection
Dim objPersonCollection As New PersonCollection
For a As Integer = 0 To 3
Dim objPerson As New person
objPerson.Name = "Name" + a.ToString
objPersonCollection.add(objPerson)
Next
Return objPersonCollection
End Function
Protected Sub GridView2_PageIndexChanging(ByVal sender As Object, ByVal e As
System.Web.UI.WebControls.GridViewPageEventArgs) Handles
GridView2.PageIndexChanging
End Sub
Protected Sub GridView2_PageIndexChanged(ByVal sender As Object, ByVal e As
System.EventArgs) Handles GridView2.PageIndexChanged
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView ID="GridView2" runat="server" AllowPaging="True" PageSize="2"
AutoGenerateColumns="False">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:RadioButtonList ID="rblCategories" SelectedValue="<%#Bind('Name') %>"
runat="server">
<asp:ListItem Text="John" Value="Name0"></asp:ListItem>
<asp:ListItem Text="Nick" Value="Name1"></asp:ListItem>
<asp:ListItem Text="Bob" Value="Name2"></asp:ListItem>
<asp:ListItem Text="Ed" Value="Name3"></asp:ListItem>
</asp:RadioButtonList></ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</form>
</body>
</html>Marc,
When you bind the GridView to a datasource that is not a DataSourceControl
(something other than SqlDataSource, ObjectDataSource, etc.) then you lose
some of the automatic functionality like paging and sorting.
You can bind the GridView to a class that implements ICollection but then
you'll have to handle some of the plumbing yourself.
Try modifying your PageIndexChanging handler to:
Protected Sub GridView2_PageIndexChanging(ByVal sender As Object, ByVal
e As System.Web.UI.WebControls.GridViewPageEventArgs) Handles
GridView2.PageIndexChanging
Me.GridView2.PageIndex = e.NewPageIndex
GridView2.DataSource = bron()
GridView2.DataBind()
End Sub
If handling the events manually is a problem then you might take a look at
using an ObjectDataSource to expose your collection.
http://webproject.scottgu.com/CSharp/Data/Data.aspx
This one has some good details about handling sorting
http://msdn2.microsoft.com/en-us/library/aa479347.aspx
hope this helps,
Jason Vermillion
"Marc Grutte" wrote:
> Hi
> I am trying to bind a custom datasource to a gridview whilst paging is
> enabled. What is missing in this code to make the paging + binding work?
> thanks
> M
> <%@. Page Language="VB" %>
> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
> "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
> <script runat="server">
> Public Class person
> Dim _name As String
> Public Property Name()
> Get
> Return _name
> End Get
> Set(ByVal value)
> _name = value
> End Set
> End Property
>
>
> End Class
> Public Class PersonCollection : Inherits CollectionBase
> Sub New()
> MyBase.New()
> End Sub
> Public Property item(ByVal i As Integer)
> Get
> Return Me.List(i)
> End Get
> Set(ByVal value)
> Me.List(i) = value
> End Set
> End Property
> Public Sub add(ByVal item As person)
> Me.List.Add(item)
> End Sub
> End Class
> Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles
> Me.Load
> If Not IsPostBack Then
> GridView2.DataSource = bron()
> GridView2.DataBind()
> End If
>
> End Sub
> Protected Function bron() As PersonCollection
> Dim objPersonCollection As New PersonCollection
> For a As Integer = 0 To 3
> Dim objPerson As New person
> objPerson.Name = "Name" + a.ToString
> objPersonCollection.add(objPerson)
> Next
> Return objPersonCollection
> End Function
> Protected Sub GridView2_PageIndexChanging(ByVal sender As Object, ByVal e
As
> System.Web.UI.WebControls.GridViewPageEventArgs) Handles
> GridView2.PageIndexChanging
>
>
> End Sub
> Protected Sub GridView2_PageIndexChanged(ByVal sender As Object, ByVal e A
s
> System.EventArgs) Handles GridView2.PageIndexChanged
>
>
> End Sub
>
>
>
> </script>
> <html xmlns="http://www.w3.org/1999/xhtml">
> <head id="Head1" runat="server">
> <title></title>
> </head>
> <body>
> <form id="form1" runat="server">
> <div>
> <asp:GridView ID="GridView2" runat="server" AllowPaging="True" PageSize="2
"
> AutoGenerateColumns="False">
> <Columns>
> <asp:TemplateField>
> <ItemTemplate>
> <asp:RadioButtonList ID="rblCategories" SelectedValue="<%#Bind('Name') %>"
> runat="server">
> <asp:ListItem Text="John" Value="Name0"></asp:ListItem>
> <asp:ListItem Text="Nick" Value="Name1"></asp:ListItem>
> <asp:ListItem Text="Bob" Value="Name2"></asp:ListItem>
> <asp:ListItem Text="Ed" Value="Name3"></asp:ListItem>
> </asp:RadioButtonList></ItemTemplate>
> </asp:TemplateField>
> </Columns>
> </asp:GridView>
> </div>
> </form>
> </body>
> </html>
>
>
thanks Jason!
"Jason Vermillion" wrote:
> Marc,
> When you bind the GridView to a datasource that is not a DataSourceControl
> (something other than SqlDataSource, ObjectDataSource, etc.) then you lose
> some of the automatic functionality like paging and sorting.
> You can bind the GridView to a class that implements ICollection but then
> you'll have to handle some of the plumbing yourself.
> Try modifying your PageIndexChanging handler to:
> Protected Sub GridView2_PageIndexChanging(ByVal sender As Object, ByVa
l
> e As System.Web.UI.WebControls.GridViewPageEventArgs) Handles
> GridView2.PageIndexChanging
> Me.GridView2.PageIndex = e.NewPageIndex
> GridView2.DataSource = bron()
> GridView2.DataBind()
> End Sub
> If handling the events manually is a problem then you might take a look at
> using an ObjectDataSource to expose your collection.
> http://webproject.scottgu.com/CSharp/Data/Data.aspx
> This one has some good details about handling sorting
> http://msdn2.microsoft.com/en-us/library/aa479347.aspx
> hope this helps,
> Jason Vermillion
> "Marc Grutte" wrote:
>
No problem, glad to help.
Jason
"Bert" wrote:
> thanks Jason!
> "Jason Vermillion" wrote:
>
kamii47 wrote: