> I have a very simple UserControl which contains an Image and a Label, which
> I use to display an image with a caption. I am using this control inside a
> DataList, setting the two Public variables using attributes in the *.aspx
> page. Everything displays great for the initial load, but whenever I try to
> add or delete an item (I have controls to do this on the page), it does not
> seem to be recieving any values for the public variables. Here is the
> important code I use for the UserControl and the DataList I use it in (if I
> left out anything that will help you determine the problem, let me know):
>
>
> The UserControl:
>
> Public caption As String = ""
> Public photo As String = ""
>
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles MyBase.Load
>     Dim i As System.Drawing.Image =
> System.Drawing.Image.FromFile(MapPath(photo))
>     imgPhoto.Width = New Unit(200)
>     imgPhoto.Height = New Unit(CInt(200 * i.Height / i.Width))
>     imgPhoto.ImageUrl = photo
>     lblCaption.Text = caption.Trim()
> End Sub
>
>
> The DataList:
>
> <asp:datalist id="datImages" runat="server" EnableViewState="False"
> CellPadding="0" CellSpacing="5" RepeatColumns="3"
> RepeatDirection="Horizontal" DataKeyField="contentid">
>     <ItemStyle HorizontalAlign="Center" VerticalAlign="Bottom"></ItemStyle>
>     <ItemTemplate>
>         <uc1:captionimage id="CapImg" runat="server" EnableViewState="False"
> photo='<%#
> DataBinder.Eval(Container,"DataItem.content","newsinfo/{0}").Trim() %>'
> caption='<%# DataBinder.Eval(Container, "DataItem.textcaption").Trim()
> %>'></uc1:captionimage><BR><BR>
>         <asp:Button id="btnDeleteImg" runat="server"
> CausesValidation="False" Font-Bold="True" EnableViewState="False"
> Text="Delete" CommandName="delete"></asp:Button>
>     </ItemTemplate>
> </asp:datalist>
>
>
> The DeleteCommand Handler:
>
> Private Sub datImages_DeleteCommand(ByVal source As Object, ByVal e As
> System.Web.UI.WebControls.DataListCommandEventArgs) Handles
> datImages.DeleteCommand
>     Dim cmdDelete As New OleDbCommand("DELETE FROM newsinfo WHERE
> contentid=" & CInt(datImages.DataKeys(e.Item.ItemIndex)), New
> OleDbConnection(Global.connectionstring))
>
>     If Not e.Item.DataItem Is Nothing AndAlso
> System.IO.File.Exists(Server.MapPath("newsinfo/" &
> CStr(CType(e.Item.DataItem, DataRowView).Row("content")))) Then
> System.IO.File.Delete(Server.MapPath("newsinfo/" &
> CStr(CType(e.Item.DataItem, DataRowView).Row("content"))))
>     cmdDelete.Connection.Open()
>     cmdDelete.ExecuteNonQuery()
>     cmdDelete.Connection.Close()
>     Me.RefreshResults()
> End Sub
>
>
> The Page_Load Method:
>
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles MyBase.Load
>     Me.RefreshResults()
> End Sub
>
>
> The Me.RefreshResults() Method:
>
> Private Sub RefreshResults()
>     Dim imagedatatable As New DataTable
>     Dim imageadapter As New OleDbDataAdapter("SELECT
> contentid,textcaption,content FROM newsinfo WHERE contenttype='image'",
> Global.connectionstring)
>
>     imageadapter.Fill(imagedatatable)
>     datImages.DataSource = imagedatatable
>     datImages.DataBind()
> End Sub
>
>
> Why does everything work fine on the initial load of the page, but not after
> a postback? If you need to see any other code, let me know. Thanks.

"Ashish" <asha***@thisisjunk.com> wrote in message
news:%23gzb2MUfGHA.1208@TK2MSFTNGP02.phx.gbl...
> Nathan,
> you need to check for postback on pageload, the datalist can recreate
> itself, you would need to rebind only if you change the datasource ( like
> in your DeleteCommand method)
>
> hth
>
>
> Nathan Sokalski wrote:
>> I have a very simple UserControl which contains an Image and a Label,
>> which I use to display an image with a caption. I am using this control
>> inside a DataList, setting the two Public variables using attributes in
>> the *.aspx page. Everything displays great for the initial load, but
>> whenever I try to add or delete an item (I have controls to do this on
>> the page), it does not seem to be recieving any values for the public
>> variables. Here is the important code I use for the UserControl and the
>> DataList I use it in (if I left out anything that will help you determine
>> the problem, let me know):
>>
>>
>> The UserControl:
>>
>> Public caption As String = ""
>> Public photo As String = ""
>>
>> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
>> System.EventArgs) Handles MyBase.Load
>>     Dim i As System.Drawing.Image =
>> System.Drawing.Image.FromFile(MapPath(photo))
>>     imgPhoto.Width = New Unit(200)
>>     imgPhoto.Height = New Unit(CInt(200 * i.Height / i.Width))
>>     imgPhoto.ImageUrl = photo
>>     lblCaption.Text = caption.Trim()
>> End Sub
>>
>>
>> The DataList:
>>
>> <asp:datalist id="datImages" runat="server" EnableViewState="False"
>> CellPadding="0" CellSpacing="5" RepeatColumns="3"
>> RepeatDirection="Horizontal" DataKeyField="contentid">
>>     <ItemStyle HorizontalAlign="Center"
>> VerticalAlign="Bottom"></ItemStyle>
>>     <ItemTemplate>
>>         <uc1:captionimage id="CapImg" runat="server"
>> EnableViewState="False" photo='<%#
>> DataBinder.Eval(Container,"DataItem.content","newsinfo/{0}").Trim() %>'
>> caption='<%# DataBinder.Eval(Container, "DataItem.textcaption").Trim()
>> %>'></uc1:captionimage><BR><BR>
>>         <asp:Button id="btnDeleteImg" runat="server"
>> CausesValidation="False" Font-Bold="True" EnableViewState="False"
>> Text="Delete" CommandName="delete"></asp:Button>
>>     </ItemTemplate>
>> </asp:datalist>
>>
>>
>> The DeleteCommand Handler:
>>
>> Private Sub datImages_DeleteCommand(ByVal source As Object, ByVal e As
>> System.Web.UI.WebControls.DataListCommandEventArgs) Handles
>> datImages.DeleteCommand
>>     Dim cmdDelete As New OleDbCommand("DELETE FROM newsinfo WHERE
>> contentid=" & CInt(datImages.DataKeys(e.Item.ItemIndex)), New
>> OleDbConnection(Global.connectionstring))
>>
>>     If Not e.Item.DataItem Is Nothing AndAlso
>> System.IO.File.Exists(Server.MapPath("newsinfo/" &
>> CStr(CType(e.Item.DataItem, DataRowView).Row("content")))) Then
>> System.IO.File.Delete(Server.MapPath("newsinfo/" &
>> CStr(CType(e.Item.DataItem, DataRowView).Row("content"))))
>>     cmdDelete.Connection.Open()
>>     cmdDelete.ExecuteNonQuery()
>>     cmdDelete.Connection.Close()
>>     Me.RefreshResults()
>> End Sub
>>
>>
>> The Page_Load Method:
>>
>> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
>> System.EventArgs) Handles MyBase.Load
>>     Me.RefreshResults()
>> End Sub
>>
>>
>> The Me.RefreshResults() Method:
>>
>> Private Sub RefreshResults()
>>     Dim imagedatatable As New DataTable
>>     Dim imageadapter As New OleDbDataAdapter("SELECT
>> contentid,textcaption,content FROM newsinfo WHERE contenttype='image'",
>> Global.connectionstring)
>>
>>     imageadapter.Fill(imagedatatable)
>>     datImages.DataSource = imagedatatable
>>     datImages.DataBind()
>> End Sub
>>
>>
>> Why does everything work fine on the initial load of the page, but not
>> after a postback? If you need to see any other code, let me know. Thanks.

> When I do an If Not IsPostBack() in the Page_Load, then one of my other
> events does not work because it uses the DataKeys property, which is not
> completely created until after databinding. Any other ideas?

"Ashish" <asha***@thisisjunk.com> wrote in message news:uULreKbfGHA.1320@TK2MSFTNGP04.phx.gbl...
> the problem would be that grid would bind again and event would be lost,
> because the grid has lost the view state information,
>
> on the itemcommand event you should be able to datakey value without
> having to rebind it,
> you can post more code if you want
>
>
>
>
>
> Nathan Sokalski wrote:
>> When I do an If Not IsPostBack() in the Page_Load, then one of my other
>> events does not work because it uses the DataKeys property, which is not
>> completely created until after databinding. Any other ideas?

> OK, but I am still having a problem that happens only on postbacks. The
> problem (or at least the error line it shows in the error, I think the
> error is somewhere else) is in the extra little class I wrote to display
> images with captions. Here is a screenshot of the error I am shown:
> 
>
>
>   Server Error in '/VAPresenters' Application.
>   ------------------------------------------------------------------------
>
>
>     c:\inetpub\wwwroot\VAPresenters
>
> Description: An unhandled exception occurred during the execution of the
> current web request. Please review the stack trace for more information
> about the error and where it originated in the code.
>
> Exception Details: System.IO.FileNotFoundException:
> c:\inetpub\wwwroot\VAPresenters
>
> Source Error:
>
> Line 27:
> Line 28:     Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
> Line 29:         Dim i As System.Drawing.Image = System.Drawing.Image.FromFile(MapPath(photo))
> Line 30:         imgPhoto.Height = New Unit(CInt(200 * i.Height / i.Width))
> Line 31:         i.Dispose() 'Without this line, you may recieve an error saying another process is using the file when you try to delete it
>
>
> Source File: c:\inetpub\wwwroot\VAPresenters\captionimage.ascx.vb   
> Line: 29
>
> Stack Trace:
>
> [FileNotFoundException: c:\inetpub\wwwroot\VAPresenters]
>    System.Drawing.Image.FromFile(String filename, Boolean useEmbeddedColorManagement) +204
>    System.Drawing.Image.FromFile(String filename) +7
>    VAPresenters.captionimage.Page_Load(Object sender, EventArgs e) in c:\inetpub\wwwroot\VAPresenters\captionimage.ascx.vb:29
>    System.Web.UI.Control.OnLoad(EventArgs e) +67
>    System.Web.UI.Control.LoadRecursive() +35
>    System.Web.UI.Control.LoadRecursive() +98
>    System.Web.UI.Control.AddedControl(Control control, Int32 index) +307
>    System.Web.UI.ControlCollection.Add(Control child) +153
>    System.Web.UI.WebControls.DataList.CreateItem(Int32 itemIndex, ListItemType itemType, Boolean dataBind, Object dataItem) +111
>    System.Web.UI.WebControls.DataList.CreateControlHierarchy(Boolean useDataSource) +686
>    System.Web.UI.WebControls.BaseDataList.CreateChildControls() +61
>    System.Web.UI.Control.EnsureChildControls() +100
>    System.Web.UI.WebControls.BaseDataList.get_Controls() +12
>    System.Web.UI.WebControls.BaseDataList.OnDataBinding(EventArgs e) +20
>    System.Web.UI.WebControls.BaseDataList.DataBind() +23
>    VAPresenters.newsinfoadmin.RefreshResults() in c:\inetpub\wwwroot\VAPresenters\newsinfoadmin.aspx.vb:64
>    VAPresenters.newsinfoadmin.datLinksFiles_PreRender(Object sender, EventArgs e) in c:\inetpub\wwwroot\VAPresenters\newsinfoadmin.aspx.vb:192
>    System.Web.UI.Control.OnPreRender(EventArgs e) +67
>    System.Web.UI.Control.PreRenderRecursiveInternal() +62
>    System.Web.UI.Control.PreRenderRecursiveInternal() +125
>    System.Web.UI.Control.PreRenderRecursiveInternal() +125
>    System.Web.UI.Page.ProcessRequestMain() +1476
>
>
> ------------------------------------------------------------------------
> Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
> ASP.NET Version:1.1.4322.2032
> 
> 
> Here is the class code and the couple other things that might be relevant:
> 
> 
> The Class's .aspx File:
> 
> <%@ Control Language="vb" AutoEventWireup="false"
> Codebehind="captionimage.ascx.vb" Inherits="VAPresenters.captionimage"
> TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %>
> <div align="center">
>     <asp:Image id="imgPhoto" runat="server"
> EnableViewState="False"></asp:Image><BR>
>     <asp:Label id="lblCaption" runat="server" EnableViewState="False"
> Font-Size="X-Small" Width="200px"></asp:Label><br>
> </div>
> 
> 
> The Class's .aspx.vb File (the "Web Form Designer Generated Code"
> section is not included here, I did not modify that part):
> 
> Public Class captionimage
>     Inherits System.Web.UI.UserControl
> 
>     Public caption As String = ""
>     Public photo As String = ""
> 
>     Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles MyBase.Load
>         Dim i As System.Drawing.Image =
> System.Drawing.Image.FromFile(MapPath(photo))
>         imgPhoto.Height = New Unit(CInt(200 * i.Height / i.Width))
>         i.Dispose() 'Without this line, you may recieve an error saying
> another process is using the file when you try to delete it
>         imgPhoto.Width = New Unit(200)
>         imgPhoto.ImageUrl = photo
>         lblCaption.Text = caption.Trim()
>     End Sub
> End Class
> 
> 
> The Me.RefreshResults() Method:
>
> Private Sub RefreshResults()
>     Dim imagedatatable As New DataTable
>     Dim imageadapter As New OleDbDataAdapter("SELECT
> contentid,textcaption,content FROM newsinfo WHERE contenttype='image'",
> Global.connectionstring)
>
>     imageadapter.Fill(imagedatatable)
>     datImages.DataSource = imagedatatable
>     datImages.DataBind()
> End Sub
> 
> 
> The 2 Places I call RefreshResults() From:
> 
> Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
> System.EventArgs) Handles MyBase.Load
>     If Not IsPostBack() Then Me.RefreshResults()
> End Sub
> 
> Private Sub Page_PreRender(ByVal sender As Object, ByVal e As
> System.EventArgs) Handles MyBase.PreRender
>     If IsPostBack() Then Me.RefreshResults()
> End Sub
> 
> 
> The error is recieved only on postbacks (no matter what I do to cause
> the postback, as far as I can tell). If I remove the line in
> Page_PreRender Then I do not recieve the error, but doing that obviously
> means that my page does not get updated. Another thing that is confusing
> me, whether it is related I cannot tell, but in the Template Editor I
> see the following:
> 
> 
> Error Creating Control
> 
> Did I forget something in the UserControl's code? Why is it having a
> problem creating the control? I don't think it matters for now, but
> since the line shown in the error is in the control's code, I though it
> would be good to mention this. Thanks.
> --
> Nathan Sokalski
> njsokal***@hotmail.com <mailto:njsokal***@hotmail.com>
> http://www.nathansokalski.com/
> 
> "Ashish" <asha***@thisisjunk.com <mailto:asha***@thisisjunk.com>> wrote
> in message news:uULreKbfGHA.1320@TK2MSFTNGP04.phx.gbl...
>  > the problem would be that grid would bind again and event would be lost,
>  > because the grid has lost the view state information,
>  >
>  > on the itemcommand event you should be able to datakey value without
>  > having to rebind it,
>  > you can post more code if you want
>  >
>  >
>  >
>  >
>  >
>  > Nathan Sokalski wrote:
>  >> When I do an If Not IsPostBack() in the Page_Load, then one of my other
>  >> events does not work because it uses the DataKeys property, which is
> not
>  >> completely created until after databinding. Any other ideas?

"Ashish" <asha***@thisisjunk.com> wrote in message
news:ODHyCmdfGHA.3456@TK2MSFTNGP05.phx.gbl...
> Nathan,
> the photo and caption variables in your control are not being set (
> atleast in the code that i see), do you want to perform the image
> operation on some action ?
>
>
>
>
>
> Nathan Sokalski wrote:
>> OK, but I am still having a problem that happens only on postbacks. The
>> problem (or at least the error line it shows in the error, I think the
>> error is somewhere else) is in the extra little class I wrote to display
>> images with captions. Here is a screenshot of the error I am shown:
>>  Server Error in '/VAPresenters' Application.
>>   ------------------------------------------------------------------------
>>
>>
>>     c:\inetpub\wwwroot\VAPresenters
>>
>> Description: An unhandled exception occurred during the execution of the
>> current web request. Please review the stack trace for more information
>> about the error and where it originated in the code.
>>
>> Exception Details: System.IO.FileNotFoundException:
>> c:\inetpub\wwwroot\VAPresenters
>>
>> Source Error:
>>
>> Line 27: Line 28:     Private Sub Page_Load(ByVal sender As
>> System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
>> Line 29:         Dim i As System.Drawing.Image =
>> System.Drawing.Image.FromFile(MapPath(photo))
>> Line 30:         imgPhoto.Height = New Unit(CInt(200 * i.Height /
>> i.Width))
>> Line 31:         i.Dispose() 'Without this line, you may recieve an error
>> saying another process is using the file when you try to delete it
>>
>>
>> Source File: c:\inetpub\wwwroot\VAPresenters\captionimage.ascx.vb
>> Line: 29
>>
>> Stack Trace:
>>
>> [FileNotFoundException: c:\inetpub\wwwroot\VAPresenters]
>>    System.Drawing.Image.FromFile(String filename, Boolean
>> useEmbeddedColorManagement) +204
>>    System.Drawing.Image.FromFile(String filename) +7
>>    VAPresenters.captionimage.Page_Load(Object sender, EventArgs e) in
>> c:\inetpub\wwwroot\VAPresenters\captionimage.ascx.vb:29
>>    System.Web.UI.Control.OnLoad(EventArgs e) +67
>>    System.Web.UI.Control.LoadRecursive() +35
>>    System.Web.UI.Control.LoadRecursive() +98
>>    System.Web.UI.Control.AddedControl(Control control, Int32 index) +307
>>    System.Web.UI.ControlCollection.Add(Control child) +153
>>    System.Web.UI.WebControls.DataList.CreateItem(Int32 itemIndex,
>> ListItemType itemType, Boolean dataBind, Object dataItem) +111
>>    System.Web.UI.WebControls.DataList.CreateControlHierarchy(Boolean
>> useDataSource) +686
>>    System.Web.UI.WebControls.BaseDataList.CreateChildControls() +61
>>    System.Web.UI.Control.EnsureChildControls() +100
>>    System.Web.UI.WebControls.BaseDataList.get_Controls() +12
>>    System.Web.UI.WebControls.BaseDataList.OnDataBinding(EventArgs e) +20
>>    System.Web.UI.WebControls.BaseDataList.DataBind() +23
>>    VAPresenters.newsinfoadmin.RefreshResults() in
>> c:\inetpub\wwwroot\VAPresenters\newsinfoadmin.aspx.vb:64
>>    VAPresenters.newsinfoadmin.datLinksFiles_PreRender(Object sender,
>> EventArgs e) in c:\inetpub\wwwroot\VAPresenters\newsinfoadmin.aspx.vb:192
>>    System.Web.UI.Control.OnPreRender(EventArgs e) +67
>>    System.Web.UI.Control.PreRenderRecursiveInternal() +62
>>    System.Web.UI.Control.PreRenderRecursiveInternal() +125
>>    System.Web.UI.Control.PreRenderRecursiveInternal() +125
>>    System.Web.UI.Page.ProcessRequestMain() +1476
>>
>>
>> ------------------------------------------------------------------------
>> Version Information: Microsoft .NET Framework Version:1.1.4322.2032;
>> ASP.NET Version:1.1.4322.2032
>>  Here is the class code and the couple other things that might be
>> relevant:
>>  The Class's .aspx File:
>>  <%@ Control Language="vb" AutoEventWireup="false"
>> Codebehind="captionimage.ascx.vb" Inherits="VAPresenters.captionimage"
>> TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %>
>> <div align="center">
>>     <asp:Image id="imgPhoto" runat="server"
>> EnableViewState="False"></asp:Image><BR>
>>     <asp:Label id="lblCaption" runat="server" EnableViewState="False"
>> Font-Size="X-Small" Width="200px"></asp:Label><br>
>> </div>
>>  The Class's .aspx.vb File (the "Web Form Designer Generated Code"
>> section is not included here, I did not modify that part):
>>  Public Class captionimage
>>     Inherits System.Web.UI.UserControl
>>  Public caption As String = ""
>>     Public photo As String = ""
>>  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
>> System.EventArgs) Handles MyBase.Load
>>         Dim i As System.Drawing.Image =
>> System.Drawing.Image.FromFile(MapPath(photo))
>>         imgPhoto.Height = New Unit(CInt(200 * i.Height / i.Width))
>>         i.Dispose() 'Without this line, you may recieve an error saying
>> another process is using the file when you try to delete it
>>         imgPhoto.Width = New Unit(200)
>>         imgPhoto.ImageUrl = photo
>>         lblCaption.Text = caption.Trim()
>>     End Sub
>> End Class
>>  The Me.RefreshResults() Method:
>>
>> Private Sub RefreshResults()
>>     Dim imagedatatable As New DataTable
>>     Dim imageadapter As New OleDbDataAdapter("SELECT
>> contentid,textcaption,content FROM newsinfo WHERE contenttype='image'",
>> Global.connectionstring)
>>
>>     imageadapter.Fill(imagedatatable)
>>     datImages.DataSource = imagedatatable
>>     datImages.DataBind()
>> End Sub
>>  The 2 Places I call RefreshResults() From:
>>  Private Sub Page_Load(ByVal sender As System.Object, ByVal e As
>> System.EventArgs) Handles MyBase.Load
>>     If Not IsPostBack() Then Me.RefreshResults()
>> End Sub
>>  Private Sub Page_PreRender(ByVal sender As Object, ByVal e As
>> System.EventArgs) Handles MyBase.PreRender
>>     If IsPostBack() Then Me.RefreshResults()
>> End Sub
>>  The error is recieved only on postbacks (no matter what I do to cause
>> the postback, as far as I can tell). If I remove the line in
>> Page_PreRender Then I do not recieve the error, but doing that obviously
>> means that my page does not get updated. Another thing that is confusing
>> me, whether it is related I cannot tell, but in the Template Editor I see
>> the following:
>>  Error Creating Control
>>  Did I forget something in the UserControl's code? Why is it having a
>> problem creating the control? I don't think it matters for now, but since
>> the line shown in the error is in the control's code, I though it would
>> be good to mention this. Thanks.
>> --
>> Nathan Sokalski
>> njsokal***@hotmail.com <mailto:njsokal***@hotmail.com>
>> http://www.nathansokalski.com/
>>  "Ashish" <asha***@thisisjunk.com <mailto:asha***@thisisjunk.com>> wrote
>> in message news:uULreKbfGHA.1320@TK2MSFTNGP04.phx.gbl...
>>  > the problem would be that grid would bind again and event would be
>> lost,
>>  > because the grid has lost the view state information,
>>  >
>>  > on the itemcommand event you should be able to datakey value without
>>  > having to rebind it,
>>  > you can post more code if you want
>>  >
>>  >
>>  >
>>  >
>>  >
>>  > Nathan Sokalski wrote:
>>  >> When I do an If Not IsPostBack() in the Page_Load, then one of my
>> other
>>  >> events does not work because it uses the DataKeys property, which is
>> not
>>  >> completely created until after databinding. Any other ideas?

> The place where I set the photo and caption variables is in the .aspx file's
> tag for the control by using databinding. This gives the desired results
> during the initial load. Here is the section of the code that contains the
> tag I am referring to:
>
>
> <asp:datalist id="datImages" runat="server" DataKeyField="contentid"
> CellPadding="0" CellSpacing="5" RepeatColumns="3"
> RepeatDirection="Horizontal">
>     <ItemStyle HorizontalAlign="Center" VerticalAlign="Bottom"></ItemStyle>
>     <ItemTemplate>
>         <uc1:captionimage id=CapImg runat="server" EnableViewState="true"
> photo='<%#
> DataBinder.Eval(Container,"DataItem.content","newsinfo/{0}").Trim() %>'
> caption='<%# DataBinder.Eval(Container, "DataItem.textcaption").Trim()
> %>'></uc1:captionimage><BR>
>         <asp:Button id="btnDeleteImg" runat="server" Text="Delete"
> EnableViewState="False" Font-Bold="True" CausesValidation="False"
> CommandName="delete"></asp:Button>
>     </ItemTemplate>
> </asp:datalist>
>
>
> Notice that the tag for the captionimage contains attributes called photo
> and caption. From some of the debugging that I tried to do when I first
> started recieving this error it seemed like the control was being created
> before the databinding, which other than the initial load it is due to the
> fact that my page's Load event has the call to Me.RefreshResults() inside
> the following if statement:
>
> If Not IsPostBack() Then Me.RefreshResults()
>
> It almost feels like I need to somehow wait until after databinding to
> execute the captionimage's code, but I believe the page's Load event
> automatically calls the captionimage's Load event. I'm not sure what to do
> from here.

"Ashish" <asha***@thisisjunk.com> wrote in message
news:%23%23ITOunfGHA.1520@TK2MSFTNGP03.phx.gbl...
> what if you do the photo operation from the postback of the button event
> (or OnItemCommand) instead of page_load ?
>
>
>
> Nathan Sokalski wrote:
>> The place where I set the photo and caption variables is in the .aspx
>> file's tag for the control by using databinding. This gives the desired
>> results during the initial load. Here is the section of the code that
>> contains the tag I am referring to:
>>
>>
>> <asp:datalist id="datImages" runat="server" DataKeyField="contentid"
>> CellPadding="0" CellSpacing="5" RepeatColumns="3"
>> RepeatDirection="Horizontal">
>>     <ItemStyle HorizontalAlign="Center"
>> VerticalAlign="Bottom"></ItemStyle>
>>     <ItemTemplate>
>>         <uc1:captionimage id=CapImg runat="server" EnableViewState="true"
>> photo='<%#
>> DataBinder.Eval(Container,"DataItem.content","newsinfo/{0}").Trim() %>'
>> caption='<%# DataBinder.Eval(Container, "DataItem.textcaption").Trim()
>> %>'></uc1:captionimage><BR>
>>         <asp:Button id="btnDeleteImg" runat="server" Text="Delete"
>> EnableViewState="False" Font-Bold="True" CausesValidation="False"
>> CommandName="delete"></asp:Button>
>>     </ItemTemplate>
>> </asp:datalist>
>>
>>
>> Notice that the tag for the captionimage contains attributes called photo
>> and caption. From some of the debugging that I tried to do when I first
>> started recieving this error it seemed like the control was being created
>> before the databinding, which other than the initial load it is due to
>> the fact that my page's Load event has the call to Me.RefreshResults()
>> inside the following if statement:
>>
>> If Not IsPostBack() Then Me.RefreshResults()
>>
>> It almost feels like I need to somehow wait until after databinding to
>> execute the captionimage's code, but I believe the page's Load event
>> automatically calls the captionimage's Load event. I'm not sure what to
>> do from here.

"Nathan Sokalski" <njsokal***@hotmail.com> wrote in message
news:OGS3RRofGHA.3364@TK2MSFTNGP05.phx.gbl...
>I might have to end up doing that, but if I were to do that, there wouldn't
>be much point in even creating a UserControl, since it is so small and the
>photo operation is the only code that is in the UserControl. I might need
>to do that due to time restraints. I will also try this other idea. What if
>I put the photo operation code in the UserControl's PreRender event? would
>it get called immediately after the UserControl's Load event, or would it
>get called from the page's PreRender event? Either way, thanks for your
>suggestion, hopefully one of these two ideas will work. Thanks, I will let
>you know.
> --
> Nathan Sokalski
> njsokal***@hotmail.com
> http://www.nathansokalski.com/
>
> "Ashish" <asha***@thisisjunk.com> wrote in message
> news:%23%23ITOunfGHA.1520@TK2MSFTNGP03.phx.gbl...
>> what if you do the photo operation from the postback of the button event
>> (or OnItemCommand) instead of page_load ?
>>
>>
>>
>> Nathan Sokalski wrote:
>>> The place where I set the photo and caption variables is in the .aspx
>>> file's tag for the control by using databinding. This gives the desired
>>> results during the initial load. Here is the section of the code that
>>> contains the tag I am referring to:
>>>
>>>
>>> <asp:datalist id="datImages" runat="server" DataKeyField="contentid"
>>> CellPadding="0" CellSpacing="5" RepeatColumns="3"
>>> RepeatDirection="Horizontal">
>>>     <ItemStyle HorizontalAlign="Center"
>>> VerticalAlign="Bottom"></ItemStyle>
>>>     <ItemTemplate>
>>>         <uc1:captionimage id=CapImg runat="server"
>>> EnableViewState="true" photo='<%#
>>> DataBinder.Eval(Container,"DataItem.content","newsinfo/{0}").Trim() %>'
>>> caption='<%# DataBinder.Eval(Container, "DataItem.textcaption").Trim()
>>> %>'></uc1:captionimage><BR>
>>>         <asp:Button id="btnDeleteImg" runat="server" Text="Delete"
>>> EnableViewState="False" Font-Bold="True" CausesValidation="False"
>>> CommandName="delete"></asp:Button>
>>>     </ItemTemplate>
>>> </asp:datalist>
>>>
>>>
>>> Notice that the tag for the captionimage contains attributes called
>>> photo and caption. From some of the debugging that I tried to do when I
>>> first started recieving this error it seemed like the control was being
>>> created before the databinding, which other than the initial load it is
>>> due to the fact that my page's Load event has the call to
>>> Me.RefreshResults() inside the following if statement:
>>>
>>> If Not IsPostBack() Then Me.RefreshResults()
>>>
>>> It almost feels like I need to somehow wait until after databinding to
>>> execute the captionimage's code, but I believe the page's Load event
>>> automatically calls the captionimage's Load event. I'm not sure what to
>>> do from here.
>
>