We Keep Coding

Repositioning Items In ASP.NET ListView

I have a ListView control on my ASP.NET web form.
It is populated with a simple SELECT from SQL data source. One of the items returned by SELECT has a value "All".
I want that item to be the first item of the ListView.
I tried setting DisplayIndex and DataItemIndex to 0, but these properties are read-only. ORDER BY does not always work either.
Could someone please provide a solution in c# or SQL? Thank you.
<asp:ListView ID="ListView1" runat="server" DataKeyNames="ListName" DataSourceID="SqlDataSource1">
<ItemTemplate>
<asp:Label ID="ListNameLabel" runat="server" Text='<%# Eval("ListName") %>' />
</ItemTemplate>
</asp:ListView>
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:MyConnectionString %>" SelectCommand="SELECT [ListName] FROM [Lists]"></asp:SqlDataSource>

Ok, I designed an ugly solution for it. SELECT statement should look like this:
SELECT [ListName] FROM [Lists] WHERE [ListName] = 'All' UNION SELECT [ListName] FROM [Lists] WHERE [ListName] != 'All'

Error when displaying data in a datalist from sqldatasource in asp project

I am building a website for a class and have come across an error that I can not find the solution to. I have a dropdownlist on the page that displays the cutomer name and sets the selected value to the customer id selected from a sqldatasource (data tables from access database - fig1) (this works fine as I have tested it before I added the second sqldatasource). I add a datalist control to the page and a second sqldatasource for the datalist to bind to. I configured the datasource using the configure data source wizard as shown in fig2. I then use the wizard to test the data returned by the query and see that it works, the wizard shows that the data that I wanted is returned. So I bind the datalist to the data source and now the itemtemplate (in the html source view) contains data bound labels that will show the values:
Products.Name:
<asp:Label ID="Products_NameLabel" runat="server" Text='<%# Eval("Products.Name") %>' />
<br />
Technicians.Name:
<asp:Label ID="Technicians_NameLabel" runat="server" Text='<%# Eval("Technicians.Name") %>' />
<br />
Incidents.DateOpened:
<asp:Label ID="Incidents_DateOpenedLabel" runat="server" Text='<%# Eval("Incidents.DateOpened") %>' />
<br />
Incidents.DateClosed:
<asp:Label ID="Incidents_DateClosedLabel" runat="server" Text='<%# Eval("Incidents.DateClosed") %>' />
<br />
Incidents.Description:
<asp:Label ID="Incidents_DescriptionLabel" runat="server" Text='<%# Eval("Incidents.Description") %>' />
The labels are now bound to the data returned from the second source....or so it would seem. When I run it and select a customer that should return the data that is being selected in the sqldatasource select statement, my program crashes and gives this error:
DataBinding: 'System.Data.DataRowView' does not contain a property with the name 'Products'.
I do not understand why it is saying that the datarowview does not contain a column with that name when the sqldatasource clearly returns it when I test it in the wizard. Can anyone please help?
P.S. Sorry for the links to imgur...apparently you have to have a higher rep to post pictures

I tried this and the generated HTML was NOT prefixed with the table name like in your code.
I hand-added the table name and reproduced your error.
So, if you have duplicate column names like you do, you need to modify the SQL statement to use an alias:
Products.Name as Products_Name

ASP.NET C# Nested controlls access

I've got something like that
<asp:ListView ID="lv" runat="server">
<LayoutTemplate>
<asp:Literal ID="litControlTitle" runat="server" />
<label id="test" runat="server">dw</label>
<asp:PlaceHolder ID="itemPlaceHolder" runat="server" />
</LayoutTemplate>
<ItemTemplate>
</ItemTemplate>
</asp:ListView>
Can someone tell me, how should I change label text, using C# code?
Main problem for me is- how to get access to the nested control (label, literal) from c# code?
EDITED:
<SelectedItemTemplate>
<asp:HiddenField ID="NumberEdit" runat="server"
Value='<%# Bind("numbers") %>' />
<label for="NameEdit">Name:</label>
<asp:TextBox ID="NameEdit" Width="160px" runat="server" AutoPostBack="true" OnTextChanged="NameEdit_TextChanged"
Text='<%# Bind("Name") %>' />
<br />
<label for="ShortcutEdit">Shortcut:</label>
<asp:TextBox ID="ShortcutEdit" Width="80px" runat="server"
Text='<%# Bind("Shortcut") %>' />
<br />
and I would like to generate automatically Shortcut text when user will change Name (Shortcut = 2 first letters from NameEdit)? Can you explain me, how should I do it? –

You would want to have an ItemDataBound event handler to get access to the controls for that particular item in your listview. The example on the page I linked should help you out.

First thing is that you need a data source binded with this ListView control, for example SqlDataSource, or any other allowed type you need:
<asp:SqlDataSource ID="SqlDataSource1" runat="server"
ConnectionString="<%$ ConnectionStrings:YourConnectionString %>"
SelectCommand="SELECT [Title], [id] FROM [Articles]"></asp:SqlDataSource>
<asp:ListView ID="lv" runat="server" DataSourceID="SqlDataSource1" >
// rest of the code
</asp:ListView>
Second thing is that controls from LayoutTemplate template will be rendered only if there is any data to show. So if you have datasource, but it is empty, this tamplate will not be applied. But you can use EmptyDataTemplate to display info when there is nothing from the datasource to display.
And then, when you already have datasource defined and binded to your ListView and there is data that will be displayed, the LayoutTemplate will be rendered. And then you can use FindControl method of the ListView. As for example of getting this literal:
Literal l = (Literal)lv.FindControl("litControlTitle");
It's returning null for you because you have no data to display, so controls are not rendered at all.

((Label)ListView1.FindControl("test")).Text = "Hello!";

Customizing ListView control in ASP.NET

I am using ListView control in ASP.NET to retrieve data from my database. I studied web form codes for my ListView control and figured out that it basically makes labels to show my data retrieved from the database. I wonder how I can manipulate the label. I can easily change the font color of the label, but I cannot make the label to truncate and show "(..more)" if its length goes more than 10 without resorting to C# code. (I could not find the labels in .cs page.) Is there anyway I can manipulate the C# codes of the labels automaticaly generated by ListView control? Pease let me know. Thanks in advance!
Below is my ListView control in C#
<asp:ListView ID="Posts" runat="server" DataSourceID="SqlDataSource1">
<ItemTemplate>
<span>
<asp:Label ID="subjectLabel" runat="server" Font-Bold="True" Font-Size="Large" Text='<%# Eval("subject") %>' />
<br />
<asp:Label ID="contentsLabel" runat="server" Font-Size="Small" ForeColor="#666699" Text='<%# Eval("contents") %>' />
<br />
<br /></span>
</ItemTemplate>

If you really want to avoid doing it in code, you could always do it in the SQL that provides the data:
SELECT CASE WHEN Len(contents) > 10 THEN Left(contents, 10) + '...' ELSE contents END
FROM YourTable
WHERE whatever
But you can do it in the databinding Eval() using the ternary operator if you don't want to use code-behind.

in the code behind page u need to bind the listview control with the datatable which u are fetching like,
Posts.Datasource=dt;
Posts.Databind();
where dt is the datatable which u are fetching using sql query.can give more explanation once u write the question more elaborately

How do i put 2 DataSet Table Results in one GridView Column?

I have two results from a data set. I want to add both results in one gridview column. I do not want to merge in the code behind. Is there another way to do that?
<asp:TemplateField HeaderText="Entered Date" SortExpression="Date">
<ItemTemplate>
<div style="text-align: center;">
<asp:Label ID="Label3" runat="server" Text='<%# formatDisplayDate(Eval("Date").ToString()) %>'></asp:Label>
</div>
</ItemTemplate>
</asp:TemplateField>
Now i would return "04/04/2009". I would like to return "04/04/2009-PASSED"

Have you tried:
formatDisplayDate(Eval("Date").ToString()) & "-" & Eval("OtherField").ToString()
If that doesn't work you should be able to set up a TemplateField for the combined rows like this:
<asp:TemplateField HeaderText="CombinedFieldName" SortExpression="CombinedFieldName">
<ItemTemplate>
<asp:Label ID="Label1" runat="server"
Text='<%# DataBinder.Eval(Container,"DataItem.FirstField") %>' >
</asp:Label>
-
<asp:Label ID="Label2" runat="server"
Text='<%# DataBinder.Eval(Container,"DataItem.SecondField") %>' >
</asp:Label>
</ItemTemplate>
</asp:TemplateField>
That said - it is usually much more efficient to do the field concatenation in the database operation if possible. I haven't tested, but I would assume that concatenating in the SELECT would be fastest, followed by concatenating in the data set in the codebehind, and combining them on the ASP.Net page would be slowest.

Another option would be to create a calculated column in the DataTable, using the DataColumn.Expression property

My first question is why don't you want to merge in the code behind? The more content you bind to a control the more data that gets put into that controls view state.
#Gary.Ray has a really good solution, but something you might find better is to use linq to build a single data object from your existing data sets that way you only include what you need and the data is a lot easier to isolate, think single responsibility pattern here, if you can move the code that deals with getting your data to somewhere that only deals with getting data your application will be MUCH easy to maintain in the future.