DataItem in DataListItem is null.

21 Nov 2005 9:01 AM

Mirek Endys

Hello,

the problem I have now, is:

Im binding generic collection based on List<iDB2SQLTransferItem> //
iDB2SQLTransferItem is my class // into WebCOntrol DataList. But the
DataItem of the DataListCommandEventArgs is null. Here is my code:

private MyData.iDB2SQLTransfers transfers = null;

protected void Page_Load(object sender, EventArgs e)
{
    AppSettingsReader apReader = new AppSettingsReader();
    string dtdPath = (string)apReader.GetValue("DTDPath", typeof(string));
    transfers = iDB2SQLTransfers.Load(dtdPath);
    this.dlDTDefinitions.DataSource = transfers;
    this.dlDTDefinitions.DataBind();
}

protected void dlDTDefinitions_ItemCommand(object source,
DataListCommandEventArgs e)
{
    switch(e.CommandName)
    {

        case "Save":
            // Here i suppose, that in the DataItem is edited item typeof
iDB2SQLTransferItem
            // but it is null. (ListItemType is right - EditItem)
            iDB2SQLTransferItem item = (iDB2SQLTransferItem)e.Item.DataItem
            dlDTDefinitions.EditItemIndex = -1;
            dlDTDefinitions.SelectedIndex = e.Item.ItemIndex;
        break;
}

---------------------------------------------
Code in aspx page // Only EditItemTemplate //
---------------------------------------------

<EditItemTemplate>
    <table>
        <tr>
            <td>ID:</td>
                <td nowrap="nowrap" valign="top"><%#
DataBinder.Eval(Container.DataItem, "ID")%></td>
                    <td>Caption:</td>
                <td>
                <asp:TextBox ID="txtCaption" runat="server" Text='<%#
DataBinder.Eval(Container.DataItem, "Caption") %>'></asp:TextBox></td>
            <td>Description:</td>
                <td>
                    <asp:TextBox ID="txtDescription" runat="server"
Text='<%# DataBinder.Eval(Container.DataItem, "Description") %>'

></asp:TextBox></td>

</tr>
</table>

==================================================

All is working well, data are viewed, commands are working well, but on Save
command I need to get edited iDB2SQLTransferItem and save it.

Thanks for ideas.

Mirek

22 Nov 2005 1:33 AM

Steven Cheng[MSFT]

Hi Mirek

Thanks for your posting.
Regarding on this issue, I've also found your another duplicated thread in
the microsoft.public.dotnet.framework.aspnet newsgroup, I've posted my
reply there. I'd appreciate if you have a look there. Also, if you feel it
convenient that we continue to discuss in that thread, please feel free to
post there.

Thanks,

Steven Cheng
Microsoft Online Support

Get Secure! www.microsoft.com/security
(This posting is provided "AS IS", with no warranties, and confers no
rights.)
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microsoft.public.dotnet.framework.aspnet:359739
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| X-Tomcat-NG: microsoft.public.dotnet.framework.aspnet.webcontrols
|
| Hello,
|
| the problem I have now, is:
|
| Im binding generic collection based on List<iDB2SQLTransferItem> //
| iDB2SQLTransferItem is my class // into WebCOntrol DataList. But the
| DataItem of the DataListCommandEventArgs is null. Here is my code:
|
| private MyData.iDB2SQLTransfers transfers = null;
|
| protected void Page_Load(object sender, EventArgs e)
| {
|     AppSettingsReader apReader = new AppSettingsReader();
|     string dtdPath = (string)apReader.GetValue("DTDPath", typeof(string));
|     transfers = iDB2SQLTransfers.Load(dtdPath);
|     this.dlDTDefinitions.DataSource = transfers;
|     this.dlDTDefinitions.DataBind();
| }
|
| protected void dlDTDefinitions_ItemCommand(object source,
| DataListCommandEventArgs e)
| {
|     switch(e.CommandName)
|     {
|
|         case "Save":
|             // Here i suppose, that in the DataItem is edited item typeof
| iDB2SQLTransferItem
|             // but it is null. (ListItemType is right - EditItem)
|             iDB2SQLTransferItem item =

(iDB2SQLTransferItem)e.Item.DataItem
Show quoteHide quote

|             dlDTDefinitions.EditItemIndex = -1;
|             dlDTDefinitions.SelectedIndex = e.Item.ItemIndex;
|         break;
| }
|
| ---------------------------------------------
| Code in aspx page // Only EditItemTemplate //
| ---------------------------------------------
|
| <EditItemTemplate>
|     <table>
|         <tr>
|             <td>ID:</td>
|                 <td nowrap="nowrap" valign="top"><%#
| DataBinder.Eval(Container.DataItem, "ID")%></td>
|                     <td>Caption:</td>
|                 <td>
|                 <asp:TextBox ID="txtCaption" runat="server" Text='<%#
| DataBinder.Eval(Container.DataItem, "Caption") %>'></asp:TextBox></td>
|             <td>Description:</td>
|                 <td>
|                     <asp:TextBox ID="txtDescription" runat="server"
| Text='<%# DataBinder.Eval(Container.DataItem, "Description") %>'
| ></asp:TextBox></td>
| </tr>
| </table>
|
| ==================================================
|
| All is working well, data are viewed, commands are working well, but on
Save
| command I need to get edited iDB2SQLTransferItem and save it.
|
| Thanks for ideas.
|
| Mirek
|
|
|