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Re: prompt user to save changes in datagrid editmode when they try to navigate away from page...how do you do that?

Eric

2/6/2004 2:48:00 AM

If you don't mind the behavior being limited to Internet Explorer, see the
following article:

http://www.codeproject.com/aspnet/EWS...


"tafs7" <tafs7@yahoo.com> wrote in message
news:8ac52dd0.0402041353.20eff253@posting.google.com...
> Hello,
>
> I have a custom datagrid control that works great. But I was thinking
> about adding some functionality to it. Currently, I use the datagrid
> to display one record at a time, and with edit item templates, if you
> click
> the edit button, the datagrid becomes a nice form to make changes.
> Kinda like a big rolodex, and as you page you flip thru each record
> individually.
>
> My question is this: how can I have some kind of server side script
> (and probably client side javascript) on the pages that contain this
> datagrid control (there are quite a few...), so that it can detect if
> the grid is in edit mode and will confirm if the user wants to save
> the changes made, before clicking
> away to another link on the page that is not the 'save' link? This
> will be very similar to the windows forms 'Exit without saving?'
> popup, so if
> users make changes to a record and forget to push the save/update
> button, then decide to click somewhere else on the page, it will tell
> them..."hey
> you need to save!"
>
> If anyone has any ideas on how to implement this, please let me
> know. I appreciate all of your help. Below is a rough pseudo code of
> my datagrid control within an aspx file. Most of the logic for the
> datagrid control is in the assembly for the custom control itself
> (i.e. itemcreated, itemdatabound, init, load, edit/delete command)
>
> Regards,
> Thiago
> Web Developer
>
> <Grid:CustomDG id=MyDG runat="server"
> ShowHeader="True"
> AutoGenerateColumns="False"
> DBTable = "tblMyTable"
> DataKeyField = "MyKeyField"
> GridLines="None"
> Cellpadding="5"
> width="800"
> BackColor="FloralWhite"
> BorderColor="Navy"
> BorderStyle="solid"
> BorderWidth="1px"
> CssClass="panel"
> AllowPaging="True"
> PageSize="1"
>
> OnUpdateCommand="MyDG_Update"
>
> HeaderStyle-BackColor="lightgrey"
> HeaderStyle-Font-Name="Verdana"
> HeaderStyle-Font-Bold="True"
> HeaderStyle-HorizontalAlign="Right"
>
> FooterStyle-BackColor="lightgrey"
> FooterStyle-Font-Name="Verdana"
> FooterStyle-Font-Bold="True" >
> <Columns>
> <asp:TemplateColumn>
> <ItemTemplate>
> <TABLE cellSpacing="0" cellPadding="0" align="center" border="1"
> bordercolor="#696969" width="100%">
> <tr bgColor="LightSteelBlue">
> <td class="tblHead">Some Information:</td>
> </tr>
> <tr><td>
> <TABLE class="setText" id="tblReason" cellSpacing="1"
> cellPadding="4" width="100%" align="center" border="0">
> <tr>
> <td class="label">Field Name: </td>
> <td>
> <asp:Label id="lblMyLabel"
> CssClass="txtIn"
> Text='<%# DataBinder.Eval(Container, "DataItem.MyFieldName") %>'
> Runat="server"/>
> </td>
> </tr>
> </TABLE>
> </td></tr>
> </TABLE>
> </ItemTemplate>
> <EditItemTemplate>
> <TABLE cellSpacing="0" cellPadding="0" align="center" border="1"
> bordercolor="#696969" width="100%">
> <tr bgColor="LightSteelBlue">
> <td class="tblHead">Provider Information:</td>
> </tr>
> <tr><td>
> <TABLE class="setText" id="tblReason" cellSpacing="3" cellPadding="3"
> width="100%" align="center" border="0">
> <tr>
> <td class="label">Field Name: </td>
> <td>
> <asp:TextBox id="lblMyLabel"
> CssClass="txtIn"
> Text='<%# DataBinder.Eval(Container, "DataItem.MyFieldName") %>'
> </td></tr>
> </TABLE>
> </EditItemTemplate>
> </asp:TemplateColumn>
> </Columns>
> </Grid:CustomDG>
> ...
>
> I do the databinding, and all other required logic, in the custom
> control's source code (assembly).