EntityDataSource.Filter ~ DataList

*blanket disclaimer, don't slap me...*
New to NetTiers....

I am attempting to "Filter" data from an EntityDataSource via user input (textBox) and am for certain I am missing something blatant here...

<asp:TextBox ID="TermTextBox" runat="server" Columns="45" MaxLength="50"></asp:TextBox><asp:Button runat="server" ID="SearchButton" Text="search" OnClick="SearchButton_Click" />
<atlas:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server">
<atlas:AutoCompleteProperties Enabled="true" MinimumPrefixLength="1" TargetControlID="TermTextBox" ServicePath="~/Services/GlossaryService.asmx" ServiceMethod="GetFilteredTerms" />
</atlas:AutoCompleteExtender>
<br />
<br />
<table style="width: 100%;">
<tr>
<td style="width: 600px;">
<asp:DataList runat="server" ID="GlossaryDataList" DataSourceID="GlossaryDataSource1">
<ItemTemplate>
<strong><%# Eval("Term") %></strong> - <%# Eval("Definition") %>
<br />
<br />
<hr style="width: 100%; height: 1px; border: dotted 1px #C0C0C0;" />
</ItemTemplate>
</asp:DataList>
<data:GlossaryDataSource runat="server" ID="GlossaryDataSource1" SelectMethod="GetAll">
</data:GlossaryDataSource>
<br />
<br />
</td>
<td style="width: 150px;">
<atlas:UpdateProgress ID="GlossaryProgressPanel" runat="server">
<ProgressTemplate>
<img src="../Images/loading.gif" alt="Loading" />One moment... The Glossary is loading.
</ProgressTemplate>
</atlas:UpdateProgress>
</td>
</tr>
</table>

The page loads great, I have data, the AutoComplete Service kicking like a charm, have even eliminated it to test bare bones, postback SearchButton_Click method fires, Filter property is set for GlossaryDataSource1 when stepping through code, but data is not filtered...

I even tried disabling viewstate on the DataList and calling both the GlossaryDataSource1.DataBind() and the GlossaryDataList.DataBind() methods after applying the Filter to the DataSource, all no go. I even saw something about Filter and EnablePaging and EnableSorting set to false in intellisense of the .Filter method, no avail.

It has to be something right in front of me, I can feel it...

Many thanks in advance...
RA

Ryan Anderson,

Can you try the following:

protected void SearchButton_Click(object sender, EventArgs e)
{
GlossaryDataSource1.Filter = string.Format("Term LIKE '{0}%'", TermTextBox.Text);

GlossaryDataList.DataBind();
}

Mike123,
Ahhh... Vagueness (sp.)

No data displays at all when I type in single or multiple letters that exists in the data;

example: the following records exist in the data on intial page load: Maker, Market Rent, Market Study, Market Value.

When I type in "m" or "M" (thought it might be a case issue at first) or even "Market Study" and click the 'SearchButton' no data displays. The SearchButton_Click event fires and the .Filter property of the DataSource is set properly, yet nada. :(

Any idear's?
Thanks again,
Ryan

Ryan,

Have you stepped through the code, do you see TermTextBox.Text has a value assigned?

Roger that.

I even "watch" in both the Watch window and Autos window (I know redundant) the GlossaryDataSource1.Filter value change to "Term LIKE 'M%'" as well.
Don't break your neck Mike, this has to be something assinine on my part.

I did however pull out all AJAX (AutoCompleteExtender, UpdatePanel, UpdateProgress controls) and left nothing but the SearchButton, GlossaryDataList, and GlossaryDataSource and still the same problem, no data returned after filter.

I even changed;
String.Format("Term Like '{0}%'", TermTextBox.Text);
To:
String.Format("Termsss Like '{0}%'", TermTextBox.Text);

To get an error of course since the column Termsss doesn't exist.

Interesting to me is that I can enter nothing (I mean leave blank) into the TermTextBox, which should logically return all records and nothing comes up.

I can query the database with this same filter direcly and I do get records not sure what I am doing.
Sounds like a personal issue if you ask me... LOL...

I even took it a step further and implemented a "Clear Filter" button to set the GlossaryDataSource.Filter = "";
Here is the code in its entirty again:
<atlas:UpdatePanel ID="GlossaryUpdatePanel" runat="server" Mode="Always">
<ContentTemplate>
To filter begin typing text into the text box below and a list of possible matched will display dynamically.<br />
<asp:TextBox ID="TermTextBox" runat="server" Columns="45" MaxLength="50"></asp:TextBox><asp:Button runat="server" ID="SearchButton" Text="filter" OnClick="SearchButton_Click" />&nbsp;<asp:Button runat="server" ID="ClearSearchButton" Text="clear filter" OnClick="ClearSearchButton_Click" Enabled="false" />
<atlas:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server">
<atlas:AutoCompleteProperties Enabled="true" MinimumPrefixLength="1" TargetControlID="TermTextBox" ServicePath="~/Services/GlossaryService.asmx" ServiceMethod="GetFilteredTerms" />
</atlas:AutoCompleteExtender>
<br />
<br />
<table style="width: 100%;">
<tr>
<td style="width: 600px;">
<asp:DataList runat="server" ID="GlossaryDataList" DataSourceID="GlossaryDataSource1">
<ItemTemplate>
<strong><%# Eval("Term") %></strong> - <%# Eval("Definition") %>
<br />
<br />
<hr style="width: 100%; height: 1px; border: dotted 1px #C0C0C0;" />
</ItemTemplate>
</asp:DataList>
<data:GlossaryDataSource runat="server" ID="GlossaryDataSource1" SelectMethod="GetAll" EnablePaging="false">
</data:GlossaryDataSource>
<br />
<br />
</td>
<td style="width: 150px;">
<atlas:UpdateProgress ID="GlossaryProgressPanel" runat="server">
<ProgressTemplate>
<img src="../Images/loading.gif" alt="Loading" />One moment... The Glossary is loading.
</ProgressTemplate>
</atlas:UpdateProgress>
</td>
</tr>
</table>
</ContentTemplate>
</atlas:UpdatePanel>

protected void SearchButton_Click(object sender, EventArgs e)
{
ClearSearchButton.Enabled = true;
GlossaryDataSource1.Filter = String.Format("Term LIKE '{0}%'", TermTextBox.Text);
GlossaryDataList.DataBind();
}

What I found interesting is that the ClearSearchButton_Click event works great. After I attempt a "Filter" (which renders the DataList with no data) all the data properly displays again...

I am using CodeSmith 3.2 and netTiers v2.0.0.387 if that be of any use. I also rebuilt/ compiled/ generated the application as well. I also think I have tried every variation of enabling and disabling viewstate for all controls on the page.

Clueless over here.
Thanks... 

Ryan,

Sorry it's totally slipped my mind , you should fine just use asterisk instead of percentage when you construct your LIKE clause

protected void SearchButton_Click(object sender, EventArgs e)
{
ClearSearchButton.Enabled = true;
GlossaryDataSource1.Filter = String.Format("Term LIKE '{0}*'", TermTextBox.Text);
GlossaryDataList.DataBind();
}

LMAO!!!

I told you it was something assinine right in front of my face... I think I saw that in the wiki too but it didn't sink in...

No worries, I am just glad that there was someone on "The Other Side" of the forum firing back with the assist!

Works like a champ!

Many thanks Mike!
RA

Interesting thing about it is that it is when typing an a single letter the filter returns all Glossary Terms that have that letter anywhere in the Term (excluding the first letter).

Example: If I Type "Ma" and click the search button it will list
Returns ~
Small Cap, Small Door

Not ~
Maker, Market Rent, Market Study, Market Value
Like I assumed it would.

I attempting to get filtered records that start with the typed letter/ letters. Is this functionality available via this method?

I think I may have to use a custom query instead, which is alright by me I guess... 

Once again many thanks,
RA

Ryan,

Have you tried using the declarative filters?

i.e. change your datasources select method to Find and then specify parameters in a similar fashion to code below

SelectMethod="Find" >
<Parameters>
<data:SqlParameter Name="Parameters" >
<Filters>
<data:GlossaryFilter Column="Term" ControlID="TermTextBox" ComparisionType="Contains" />
</Filters>
</data:SqlParameter>
</Parameters>

or using a filter predicate in the OnSelected event of your data source like...

private void GlossaryDataSource_Selected( object sender, ObjectDataSourceStatusEventArgs e )
{
TList<Glossary> glossaryList = e.ReturnValue as TList<Glossary>;
glossaryList.ApplyFilter(
delegate( Glossary x )
{
return ( x.Term == TermTextBox.text )
);
} );
}

HTH

swin

The downside to this is that it sends a bunch of custom sql, creates a temporary table, etc when a simple where clause would suffice.

Beauty!

You guys are wonderful! I have it in an AJAX UpdatePanel right... Put it up on my production server after I was done tinkering and it flows flawlessly!

I used the GlossaryFilter, your first example and it is just seamless... All data loads on page load (initially) my AutoCompleteExtender put a smile on my clients face, and the lack of pain in developing a cheap search tool put a smile on mine! Loving it! Total development time for Glossary Search tool (minus learning curve for me) about 30 minutes total....
I have only been working with netTiers for a few weeks now and the more I play, the more I find it to be priceless!!!
A solution seems to always be a stones throw away...

I sincerely thank you guys!