Develop Reference

recursively step through asp table (that has been populated with a query)

so basically I have a query that populates a table in an asp page like so:
<div class="span10">
<table class="table table-bordered table-striped with-check" runat="server" id="noncompulsarymodules">
<tbody>
<tr>
<td><asp:Label ID="Label3" runat="server" Text= '<%# Eval("ModuleId") %>' style="display:none;" /> </td>
<td><asp:Label ID="Label1" runat="server" Text= '<%# Eval("noncompcode") %>' /> </td>
<td><asp:Label ID="Label2" runat="server" Text= '<%# Eval("noncomptitle") %>' /> </td>
<td><asp:Label ID="Label4" runat="server" Text= '<%# Eval("moduleunits") %>' /> </td>
<td class="center" style="overflow:hidden;"> <asp:Label ID="ModuleDescription" runat="server" Text='<%# Eval("noncompdesc") %>' /></td>
<td><input type="checkbox" /></td>
</tr>
</tbody>
</table>
</div>
basically what I want to do is cycle through the table and take the rows that have been checked and put them into a query.
Any tips would be greatly appreciated!

Have a look at using an ASP.Net Gridview control with a checkbox / templatefield column.
You will then be able to iterate through the GridViewRows and get the checked columns.

Add multiple items to a asp repeater using tuples

I've created a repeater on the front end, and I need to add multiple items, the second item is a string and this needs to be added to the image src, any thoughts?
<asp:Repeater runat="server" ID="WeatherForcastWeek" >
<ItemTemplate>
<td>
<asp:Label runat="server" ID="Day1" />
<asp:Image runat="server" ID="WeatherIcon" />
<asp:Label runat="server" ID="Min" />
<asp:Label runat="server" ID="Max" />
</td>
</ItemTemplate>
</asp:Repeater>
Below is the DataSource type
Tuple<string, string, double, double>

You need to use ImageUrl property and pass the value using the item binding syntax for ASP.NET WebForms <%# Item.Property #>
<asp:Repeater runat="server" ID="WeatherForcastWeek" ItemType="System.Tuple`4 [System.String,System.String,System.Double,System.Double]">
<ItemTemplate>
<td>
<asp:Label runat="server" ID="Day1" Text="<%# Item.Item1 %>" />
<asp:Image runat="server" ID="WeatherIcon" ImageUrl="<%# Item.Item2 %>" />
<asp:Label runat="server" ID="Min" Text="<%# Item.Item3 %>"/>
<asp:Label runat="server" ID="Max" Text="<%# Item.Item4 %>"/>
</td>
</ItemTemplate>
</asp:Repeater>

How can I pass the url of a selected image which is included in a listview from one aspx page to another?

I am working on my class project where I created an image gallery using listview.
The Designing is below:
<asp:ListView ID="lvPresent" runat="server" DataSourceID="SqlDataSource1">
<LayoutTemplate>
<table>
<tr>
<td></td>
</tr>
</table>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server"></asp:PlaceHolder>
</LayoutTemplate>
<ItemTemplate>
<td>
<asp:HyperLink ID="HyperLink1" runat="server">
<asp:Image ID="ImageButton1" runat="server" ImageUrl='<%#Eval("url")%>' Height="200px" Width="250px" />
</asp:HyperLink>
</td>
</ItemTemplate>
</asp:ListView>
How can I send the url of the selected image from one .aspx page to another anothe ?

To send URL to another page you can use QueryString.
Modify your HyperLink and add NavigateUrl
NavigateUrl='<%#"yourNextPageName.aspx?imgURL="+ Eval("url")%>'
just replace you code:-
<asp:HyperLink ID="HyperLink1" runat="server">
<asp:Image ID="ImageButton1" runat="server" ImageUrl='<%#Eval("url")%>' Height="200px" Width="250px" />
</asp:HyperLink>
with
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl='<%#"yourNextPageName.aspx?imgURL="+ Eval("url")%>'>
<asp:Image ID="ImageButton1" runat="server" ImageUrl='<%#Eval("url")%>' Height="200px" Width="250px" />
</asp:HyperLink>

Add image URL as query string ,
NavigateUrl ='yourNextPageName.aspx?imgURL=<%# Eval("url")%>'
in HyperLink
<asp:HyperLink ID="HyperLink1" runat="server" NavigateUrl ='yourNextPageName.aspx?imgURL=<%# Eval("url")%>' >
<asp:Image ID="ImageButton1" runat="server" ImageUrl='<%#Eval("url")%>' Height="200px" Width="250px" />
</asp:HyperLink>
In destination page , get your image url as string _imgURL =Request.QueryString["imgURL"];

ASP.NET, Multiple Val Summary not working; required field val not firing

I have a repeater with editable rows on the aspx page. The row has a textbox and a required field validator associated to it. On 'save' button click on that row, the required field valiator fires, It is tied to a validationsummary at the top of the page.
Now I have this panel below the repeater with a text box and a save button. This panel is 'opened' using the jquery show method on the click on a linkbutton at the top of this panel.
The required field validator is not firing for this texbox. I have a different validation summary for this textbox; as I need to trigger the validations on click on its save button only.
So I have the code like this,
<asp:ValidationSummary ID="validationSummary" ValidationGroup="ValidationGroup1" EnableClientScript="true" runat="server" />
<asp:ValidationSummary ID="validationSummary1" ValidationGroup="ValidationGroup2" EnableClientScript="true" runat="server" />
<asp:Repeater ID="Teams" runat="server" OnItemCommand="ItemCommand" OnItemDataBound="ItemDataBound">
<HeaderTemplate>
<table >
<tr>
<th>
<asp:Label ID="lbTeamNameHeader" runat="server" Text="TeamNameHeader"></asp:Label></th>
<th></th> </tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
<asp:TextBox ID="txtTeamName" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "txtTeamName")%>' />
<asp:RequiredFieldValidator ID="reqdFieldValTeamName" ErrorMessage="Field cannot be blank" ValidationGroup="ValidationGroup1" runat="server" Display="None" ControlToValidate="txtTeamName"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="regularExprTeamName" ErrorMessage="Invalid input for the team name" ValidationGroup="ValidationGroup1" Display="None" ControlToValidate="txtTeamName" runat="server" ValidationExpression="^[a-zA-Z0-9]+$"></asp:RegularExpressionValidator>
</td>
<td>
<asp:Panel ID="panelSave" runat="server" Visible="false">
<asp:LinkButton ID="linkbuttonSave" runat="server" CommandName="Save" ValidationGroup="ValidationGroup1" Text="SAVE" />
<asp:LinkButton ID="linkbuttonCancel" runat="server" CommandName="Cancel" Text="CANCEL" />
</asp:Panel>
</td>
</tr>
</ItemTemplate>
<FooterTemplate></table></FooterTemplate>
</asp:Repeater>
<asp:LinkButton ID="linkbuttonAddTeam" runat="server" Text="Add New Team" />
<div id="AddPanelDiv" style="display:none;">
<asp:TextBox ID="txtAddTeam" runat="server" />
<asp:RequiredFieldValidator ID="reqdFieldValAddTeam" ErrorMessage="Field cannot be blank" ValidationGroup="ValidationGroup2" runat="server" Display="None" ControlToValidate="txtAddTeam"></asp:RequiredFieldValidator>
<asp:RegularExpressionValidator ID="regularExprValAddTeam" ErrorMessage="Invalid format" ValidationGroup="ValidationGroup2" Display="None" ControlToValidate="txtAddTeam" runat="server" ValidationExpression="^[a-zA-Z0-9]+$"></asp:RegularExpressionValidator>
<asp:LinkButton ID="linkbuttonCancel" runat="server" Text="CANCEL"></asp:LinkButton>
<asp:LinkButton ID="linkbuttonSaveNewTeam" runat="server" OnClick="linkbuttonSaveNewTeam_OnClick" Text="SAVE" CausesValidation="true" />
</div>
Why on earth the validators for the bottom panel fire? On click of that save button, it straightaway goes to the page method onclick.
If I remove the validation group and click on the save in the repeater, it fires! But thats not what I want..

You are missing ValidationGroup="ValidationGroup2" on your second button it looks like.
<asp:LinkButton ID="linkbuttonSaveNewTeam" runat="server" OnClick="linkbuttonSaveNewTeam_OnClick"
Text="SAVE" CausesValidation="true" ValidationGroup="ValidationGroup2" />

Handling repeater events aynchronously

I have a custom search control on my page (asp.net) which contains a textbox and a repeater for displaying results.
The repeater is populated with a callback as the user types ... nice and simple callback.
...
When a search result is selected the repeater fires off a postback and the itemcommand event is raised (as expected) ... and this event adds a child repeater to itself and binds a child list to the current item.
My problem is that I don't want my parent repeater to fire off a full postback because the page is quite time consuming to render.
I tried putting the control / just the outer repeater in to an ajax update panel control but it appears to still fire a ful postback.
Can anyone shed any light on how I might tell a repeater to fire its item command event in a callback instead of a postback?
I'm guessing this involves a load of manual wiring for my repeater item controls but i'm hoping theres a control somewhere that handles all that for me :)
EDIT : Sample of my situation ....
<asp:UpdatePanel ... >
<asp:Repeater ...>
<itemTemplate> <asp:LinkButton ... CommandArg='<%= Eval("ID") %>' CommandName="select" /> </itemTemplate>
</asp:Repeater>
</asp:UpdatePanel>
So my question is ...
How do i tell the repeater "fire this link buttons onclick as a callback instead of a postback"
the process of wrapping up the repeater in an update panel doesn't help because the ID of the link button is dynamic and therefore I cannot (not inline anyway) add a trigger for the link button.
If i manually add a trigger to the panel in the repeaters onitembound event i get an exception from .Net sayingt he callback reference is invalid ... i guess this is because im trying to attach a callback trigger to a control that is already handling a postback event or something setup by the repeater ...
EDIT 2 : Sample of the scenario faced here
essentially because this control X number of times on the page virtually everything has to be dynamic.
The control implements ICallbackHandler and the search bx code (not included below) fires off an ajax call onkeyup when the user types in company names (so it works a bit like google).
I was hoping that when a user clicked on a company name from the list it would ajax call back / partial postback to recover the sub list of branches thus preventing the full page flicker you get with a full postback.
Then a user would select a branch and it would do a full postback which would result in several server actions taking place.
This works fine as is ... its just not the cleanest user experience.
<div id='<%= this.UniqueID + "Results" %>' class="results">
<asp:Repeater ID="ui_lstCompanies" runat="server" onitemcommand="ui_lstCompanies_ItemCommand">
<HeaderTemplate>
<ul>
</HeaderTemplate>
<ItemTemplate>
<asp:Panel ID="item" runat="server">
<li>
<asp:LinkButton ID="ui_btnSelectCompany" runat="server" CommandName="Select" Text='<%# Eval("Name") %>' />
</li>
</asp:Panel>
<asp:Panel ID="selectedItem" runat="server" Visible="false">
<li>
<hr /><h4><%# Eval("Name") %></h4>
<asp:Repeater ID="ui_lstBranches" runat="server" onitemcommand="ui_lstBranches_ItemCommand" >
<HeaderTemplate>
<table style="border-collapse:collapse;">
<tr><th> </th><th>Branch Name</th><th>Branch Address</th><th>Tel</th><th>Fax</th><th>Email</th></tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td> </td>
<td><asp:LinkButton ID="ui_btnSelectBranch1" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Select" Text='<%# Eval("Name") %>' /></td>
<td><asp:LinkButton ID="ui_btnSelectBranch2" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Select" Text='<%# Eval("Address") %>' /></td></td>
<td><asp:LinkButton ID="ui_btnSelectBranch3" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Select" Text='<%# Eval("Telephone1") %>' /></td></td>
<td><asp:LinkButton ID="ui_btnSelectBranch4" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Select" Text='<%# Eval("Fax") %>' /></td></td>
<td><asp:LinkButton ID="ui_btnSelectBranch5" runat="server" CommandArgument='<%# Eval("ID") %>' CommandName="Select" Text='<%# Eval("Email") %>' /></td></td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<hr />
</li>
</asp:Panel>
</ItemTemplate>
<FooterTemplate>
</ul>
</FooterTemplate>
</asp:Repeater>
</div>

I had a similar problem as you did. If you replace the linkbuttons with regular asp:button and continue to use the repeater's itemcommand event as you were, it will work. Why? I don't know. However, it works. It may not look good with your design, but it triggers the asynch postback that you desired.

<asp:Repeater runat="server" ID="rpt1">
</asp:Repeater>
<asp:UpdatePanel runat="server" ID="up1">
<Triggers>
<asp:AsyncPostBackTrigger ControlID="rpt1"/>
</Triggers>
<ContentTemplate>
<asp:Repeater runat="server" ID="rpt2">
</asp:Repeater>
</ContentTemplate>
</asp:UpdatePanel>
This should then perform an async call to all commands from rpt1.
Just Replace these repeater control's with yours
EDIT:
I've basically created a mockup of your code with different fields etc. I assume the code below is what you tried and it was not working? If so then I've got no idea why it's not working on your side as it is on myne, there must be some slight difference somewhere that we're not picking up.
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel runat="server" ID="UpdatePanel1">
<ContentTemplate>
<div id='<%= this.UniqueID + "Results" %>' class="results">
<asp:Repeater ID="ui_lstCompanies" runat="server" OnItemCommand="ui_lstCompanies_ItemCommand">
<HeaderTemplate>
<ul>
</HeaderTemplate>
<ItemTemplate>
<asp:Panel ID="item" runat="server">
<li>
<asp:LinkButton ID="ui_btnSelectCompany" runat="server" CommandName="Select" Text='<%# Eval("Name") %>' />
</li>
</asp:Panel>
<asp:Panel ID="selectedItem" runat="server" Visible="false">
<li>
<hr />
<h4>
<%# Eval("Name") %></h4>
<asp:Repeater ID="ui_lstBranches" runat="server" OnItemCommand="ui_lstBranches_ItemCommand">
<HeaderTemplate>
<table style="border-collapse: collapse;">
<tr>
<th>
</th>
<th>
Branch Name
</th>
<th>
Branch Address
</th>
<th>
Tel
</th>
<th>
Fax
</th>
<th>
Email
</th>
</tr>
</HeaderTemplate>
<ItemTemplate>
<tr>
<td>
</td>
<td>
<asp:LinkButton ID="ui_btnSelectBranch1" runat="server" CommandArgument='<%# Eval("ID") %>'
CommandName="Select" Text='<%# Eval("Name") %>' />
</td>
<td>
<asp:LinkButton ID="ui_btnSelectBranch2" runat="server" CommandArgument='<%# Eval("ID") %>'
CommandName="Select" Text='<%# Eval("Address") %>' />
</td>
</td>
<td>
<asp:LinkButton ID="ui_btnSelectBranch3" runat="server" CommandArgument='<%# Eval("ID") %>'
CommandName="Select" Text='<%# Eval("Telephone1") %>' />
</td>
</td>
<td>
<asp:LinkButton ID="ui_btnSelectBranch4" runat="server" CommandArgument='<%# Eval("ID") %>'
CommandName="Select" Text='<%# Eval("Fax") %>' />
</td>
</td>
<td>
<asp:LinkButton ID="ui_btnSelectBranch5" runat="server" CommandArgument='<%# Eval("ID") %>'
CommandName="Select" Text='<%# Eval("Email") %>' />
</td>
</td>
</tr>
</ItemTemplate>
<FooterTemplate>
</table>
</FooterTemplate>
</asp:Repeater>
<hr />
</li>
</asp:Panel>
</ItemTemplate>
<FooterTemplate>
</ul>
</FooterTemplate>
</asp:Repeater>
</div>
</ContentTemplate>
</asp:UpdatePanel>