ListView Inserting Event - ListViewInsertEventArgs Values Collection Is Empty?

Aug 6, 2010

Given the following InsertItemTemplate (simplified) I'm not getting anything back in the event object's Values collection.

[code]....

I'm binding the listview to a collection attached to my nHibernate model object (SearchObject.SearchItems). This collection doesn't have insert or update handling like an object datasource would, so I want to handle the insert/update events manually. Is there a way to get these values to come through automatically, or do I have to manually grab each value from its control when I handle this event?

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<asp:Parameter Name="Prof" Type="String" />
<asp:Parameter Name="Class" Type="String" />
<asp:Parameter Name="Date" Type="DateTime" />
<asp:Parameter Name="Term" Type="String" />
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<asp:Parameter Name="OtherInfo2" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo3" Type="Boolean" DefaultValue="false" />
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<asp:Parameter Name="OtherInfo5" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo6" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo7" Type="Boolean" DefaultValue="false" />
<asp:Parameter Name="OtherInfo8" Type="Boolean" DefaultValue="false" />
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<asp:Label ID="StudentIDLabel" runat="server" Text='<%# Eval("StudentID") %>' />
<asp:Label ID="ProfLabel" runat="server" Text='<%# Eval("Prof") %>' />
<asp:Label ID="ClassLabel" runat="server" Text='<%# Eval("Class") %>' />
<asp:Label ID="DateLabel" runat="server" Text='<%# Eval("Date") %>' />
<asp:Label ID="TermLabel" runat="server" Text='<%# Eval("Term") %>' />
<asp:Label ID="YearLabel" runat="server" Text='<%# Eval("Year") %>' />
</td>
<td>
<asp:Label ID="SourceLabel" runat="server" Text='<%# Eval("Source") %>' />
</td>
<td>
<asp:Label ID="GradeLabel" runat="server" Text='<%# Eval("Grade") %>' />
</td>
<td>
<asp:Label ID="CommentsLabel" runat="server" Text='<%# Eval("Comments") %>' />
</td>
<td>
<asp:Label ID="NotesLabel" runat="server" Text='<%# Eval("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Eval("Read") %>'
Enabled="false" />
</td>
<td>
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<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Eval("OtherInfo2") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Eval("OtherInfo3") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Eval("OtherInfo4") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Eval("OtherInfo9") %>' Enabled="false" />
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</tr>
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<AlternatingItemTemplate>
<tr style="background-color: #FAFAD2;color: #284775;">
<td>
<asp:Button ID="EditButton" runat="server" CommandName="Edit" Text="Edit" />
</td>
<td>
<asp:Label ID="GradeIDLabel" runat="server" Text='<%# Eval("GradeID") %>' />
<asp:Label ID="StudentIDLabel" runat="server" Text='<%# Eval("StudentID") %>' />
<asp:Label ID="ProfLabel" runat="server" Text='<%# Eval("Prof") %>' />
<asp:Label ID="ClassLabel" runat="server" Text='<%# Eval("Class") %>' />
<asp:Label ID="DateLabel" runat="server" Text='<%# Eval("Date") %>' />
<asp:Label ID="TermLabel" runat="server" Text='<%# Eval("Term") %>' />
<asp:Label ID="YearLabel" runat="server" Text='<%# Eval("Year") %>' />
</td>
<td>
<asp:Label ID="SourceLabel" runat="server" Text='<%# Eval("Source") %>' />
</td>
<td>
<asp:Label ID="GradeLabel" runat="server" Text='<%# Eval("Grade") %>' />
</td>
<td>
<asp:Label ID="CommentsLabel" runat="server" Text='<%# Eval("Comments") %>' />
</td>
<td>
<asp:Label ID="NotesLabel" runat="server" Text='<%# Eval("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Eval("Read") %>'
Enabled="false" />
</td>
<td>
<asp:CheckBox ID="OtherInfo1CheckBox" runat="server"
Checked='<%# Eval("OtherInfo1") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Eval("OtherInfo2") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Eval("OtherInfo3") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Eval("OtherInfo4") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
Checked='<%# Eval("OtherInfo5") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Eval("OtherInfo6") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Eval("OtherInfo7") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Eval("OtherInfo8") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Eval("OtherInfo9") %>' Enabled="false" />
</td>
</tr>
</AlternatingItemTemplate>
<EmptyDataTemplate>
<table runat="server"
style="background-color: #FFFFFF;border-collapse: collapse;border-color: #999999;border-style:none;border-width:1px;">
<tr>
<td>
No data was returned.</td>
</tr>
</table>
</EmptyDataTemplate>
<InsertItemTemplate>
<tr style="">
<td>
<asp:Button ID="InsertButton" runat="server" CommandName="Insert"
Text="Insert" />
<asp:Button ID="CancelButton" runat="server" CommandName="Cancel"
Text="Clear" />
</td>
<td>
<!--
<asp:TextBox ID="StudentIDTextBox" runat="server"
Text='<%# Bind("StudentID") %>' />
<asp:TextBox ID="ProfTextBox" runat="server" Text='<%# Bind("Prof") %>' />
<asp:TextBox ID="ClassTextBox" runat="server" Text='<%# Bind("Class") %>' />
--> <asp:TextBox ID="DateTextBox" runat="server" Text='<%# Bind("Date") %>' />
<!-- <asp:TextBox ID="TermTextBox" runat="server" Text='<%# Bind("Term") %>' />
<asp:TextBox ID="YearTextBox" runat="server" Text='<%# Bind("Year") %>' />
--> </td>
<td>
<asp:TextBox ID="SourceTextBox" runat="server" Text='<%# Bind("Source") %>' />
</td>
<td>
<asp:TextBox ID="GradeTextBox" runat="server" Text='<%# Bind("Grade") %>' />
</td>
<td>
<asp:TextBox ID="CommentsTextBox" runat="server"
Text='<%# Bind("Comments") %>' />
</td>
<td>
<asp:TextBox ID="NotesTextBox" runat="server" Text='<%# Bind("Notes") %>' />
</td>
<td>
<asp:CheckBox ID="ReadCheckBox" runat="server" Checked='<%# Bind("Read") %>' />
</td>
<td>
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Checked='<%# Bind("OtherInfo1") %>' />
<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
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<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Bind("OtherInfo6") %>' />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Bind("OtherInfo7") %>' />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Bind("OtherInfo8") %>' /> -->
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Bind("OtherInfo9") %>' />
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</tr>
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<table runat="server">
<tr runat="server">
<td runat="server">
<table ID="itemPlaceholderContainer" runat="server" border="1"
style="background-color: #FFFFFF;border-collapse: collapse;border-color: #999999;border-style:none;border-width:1px;font-family: Verdana, Arial, Helvetica, sans-serif;">
<tr runat="server" style="background-color: #FFFBD6;color: #333333;">
<th runat="server">
</th>
<th runat="server">
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<th runat="server">
Source</th>
<th runat="server">
Grade</th>
<th runat="server">
Comments</th>
<th runat="server">
Notes</th>
<th runat="server">
Read</th>
<th runat="server">
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</tr>
<tr ID="itemPlaceholder" runat="server">
</tr>
</table>
</td>
</tr>
<tr runat="server">
<td runat="server"
style="text-align: center;background-color: #FFCC66;font-family: Verdana, Arial, Helvetica, sans-serif;color: #333333;">
<asp:DataPager ID="DataPager1" runat="server">
<Fields>
<asp:NextPreviousPagerField ButtonType="Button" ShowFirstPageButton="True"
ShowNextPageButton="False" ShowPreviousPageButton="False" />
<asp:NumericPagerField />
<asp:NextPreviousPagerField ButtonType="Button" ShowLastPageButton="True"
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<asp:TextBox ID="GradeTextBox" runat="server" Text='<%# Bind("Grade") %>' />
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<asp:CheckBox ID="OtherInfo2CheckBox" runat="server"
Checked='<%# Eval("OtherInfo2") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo3CheckBox" runat="server"
Checked='<%# Eval("OtherInfo3") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo4CheckBox" runat="server"
Checked='<%# Eval("OtherInfo4") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo5CheckBox" runat="server"
Checked='<%# Eval("OtherInfo5") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo6CheckBox" runat="server"
Checked='<%# Eval("OtherInfo6") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo7CheckBox" runat="server"
Checked='<%# Eval("OtherInfo7") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo8CheckBox" runat="server"
Checked='<%# Eval("OtherInfo8") %>' Enabled="false" />
<asp:CheckBox ID="OtherInfo9CheckBox" runat="server"
Checked='<%# Eval("OtherInfo9") %>' Enabled="false" />
</td>
</tr>
</SelectedItemTemplate>
</asp:ListView>

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Forms Data Controls :: ListView Not Inserting Records

Sep 20, 2010

Here's the next instalment of my asp.net data access nightmare!

I've got a listview on my page, and when I run the page it correctly displays the data that it should. However, when I add data into the empty new record and hit the 'Insert' button the page posts back but the record isn't inserted. Annoyingly, I don't get any error!

The listview's datasource has an INSERT command and insert parameters specified. The button seems to be triggering the listview's insert method because the ItemInserting event fires.

With no error message to go on I'm struggling to figure out what the problem is. I have a feeling it's something to do with the makeup of the page. The listview in question is nested within an Accordion control and the listview's data source isn't set until runtime, when it's done in the ItemDataBound event of the Accordion control. As I say, though, it does RETRIEVE data correctly, it's just the inserting that's a problem.

I created a new, blank page with just this listview on it using the same code but not nesting it within any other control and hardcoding the datasource instead of setting it at runtime and that works perfectly, so I'm confident that my INSERT command, insert parameters and so forth are correct.

I've tried to get my listview to break, deliberately leaving out insert parameters and so forth just so it'll give me an error message but it never does! It's as if the insert isn't taking place at all, except that because the ItemInserting even takes place I'm assuming that it is.

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Forms Data Controls :: Listview Not Updating And Inserting?

Apr 17, 2010

Data entered in textboxes is not getting updated in database. In debug mode I see that textbox1 and textbox2 in ItemUpdating event contain the same values as they had before calling ItemUpdating.

Here's my listview control:

[Code]....

What's wrong with updating of text1.Text, text2.Text in ItemUpdating event? Should I use e.NewValues property? If so, how to use it?

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Inserting Data Into Listview From Textbox Controls On The Form

Jan 20, 2013

My project is in ASP.net and C#.I am doing webbased desktop application.I have some 4-5 textboxes on the webform like ItemCode, ItemName Qty Rate Amt and a Button called Add on the click event of the Add button i want the data from the textboxes to be inserted or added to the ListView, user can add multiple entries to the ListView through this textboxes and then finally he will have a button called save on the click of save button.i want this LIstView data to be inserted into the SQL Table

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ListView LayoutTemplate Does Not Show When Empty .net?

Mar 31, 2011

I have an <asp:ListView> but for some reason the LayoutTemplate section does not show when the list is empty, although the <EmptyDataTemplate> section shows. The LayoutTemplate contains the headers for the table, and I want to show an empty table when there are no items in the datasource, not just the content of EmptyDataTemplate.If there is no choice I will copy the LayoutTemplate into EmptyDataTemplate.

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Show Empty Elements In ListView?

Mar 10, 2011

Is it possible to show empty items in ListView in ASP.NET 4.0 ? For example, there are 2 items in the datasource, but I want to show them + 2 other empty items.

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Forms Data Controls :: Inserting Item Manually In A ListView?

Feb 21, 2011

I am trying to insert manually new items in a Listview control using objects. The item seems to be inserted, but when the page is sent back to the browser, there is nothing there. Here is the code that I am using:

[Code]....

I can assign a list of object to the datasource, but when I try to input a new object to the list of items from the ListView, it doesn't work.

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Import A Collection Of Values In A Controller Using MEF?

Oct 22, 2010

I have an ASP.NET MVC2 application that supports visualization plug-ins/providers. The IVisualization interface is defined in a common assembly which is referenced by both the ASP.NET MVC2 app, and any visualization providers.

In the Visualization controller, I have a method which returns all the applicable visualizations for a given set of data. In order to scan the available providers, I use the following code in the controller's ActionMethod.

var catalog = new DirectoryCatalog(HttpRuntime.BinDirectory);
var container = new CompositionContainer(catalog);
var visualizations = container.GetExportedValues<IVisualization>();

However, I feel like if I have the following in the controller

[ImportMany] public IEnumerable<IVisualization> Visualizations { get; set; }

then the import should happen automatically. What am I missing that prevents the automatic imports?

Also, is the code that I am currently using going to kill scaling of website?

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C# - Listview - Check If Field Is Not Empty And Show A Link?

Aug 11, 2010

How to check if an a field is not empty, and show a link? i tried something like this but i get error.

<asp:ListView ID="ListView1" runat="server">
<LayoutTemplate>
<asp:PlaceHolder ID="itemPlaceholder" runat="server"></asp:PlaceHolder>
</LayoutTemplate>
<ItemTemplate>
<h2><%#Eval("NC_Title") %></h2>
<%#Eval("NC_StartDate") %>
<p><%#Eval("NC_Abstract") %></p>
<%if(Eval("NC_Description").ToString().Length > 0)
{
%><a href="">Read more...</a><%
}%>
</ItemTemplate>
</asp:ListView>

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Forms Data Controls :: Using Eval To Get Data Bound Values From Outer Listview In Nested Listview Sample Case?

Jul 6, 2010

i need to get data-bound items from outer listview to display in inner Listview, in this scenario:

[code]....

Where the higlighted text mean the title for outer datasource.

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