Datasource to Populate DDL - then choose item

I've got a page with a SQLDataSource control successfully populating a Dropdownlist...

However, now I find I need extended functionality - so I've got another page with links to this page, using querystrings - I need to hit the page, check the querystring, and if it's blank, just continue, but if the querystring is populated, then choose that item.

I've tried the page_load and the page_prerender, but so far, it's not working:
CC = Request.QueryString("center")
If CC <>""Then
' DropDownList1.Items.FindByText(CC).Selected = True
DropDownList1.SelectedIndex = DropDownList1.Items.IndexOf(DropDownList1.Items.FindByText(CC))
End if

I've double checked, and yes, every time CC is populated, that item is definitely in the dropdownlist - it just doesn't get changed to that item.

ideas?

EndIf

Here's an example for you:

ASPX

<asp:dropdownlist id="ddlPets" runat="server" ondatabound="ddlPets_DataBound"></asp:dropdownlist><br /><br /><asp:hyperlink id="hypDog" runat="server" navigateurl="1131233.aspx?pet=Dog" text="Pre-select Dog" /><br /><asp:hyperlink id="hypCat" runat="server" navigateurl="1131233.aspx?pet=Cat" text="Pre-select Cat" /><br /><asp:hyperlink id="hypGoldfish" runat="server" navigateurl="1131233.aspx?pet=Goldfish"text="Pre-select Goldfish" /><br />

CODE-BEHIND

protected void Page_Load(object sender, EventArgs e){if (!this.IsPostBack){string[] pets = {"Dog","Cat","Goldfish" };ddlPets.DataSource = pets;ddlPets.DataBind();}}protected void ddlPets_DataBound(object sender, EventArgs e){if (this.Request["Pet"] ==null) {return; }ddlPets.SelectedIndex = ddlPets.Items.IndexOf(ddlPets.Items.FindByValue(this.Request["Pet"]));}

|||

using the databound even worked

sql

Datasource error

Hi, i've a problem with calling a report created with reporting service; i get this error :System.Web.Services.Protocols.SoapException : Impossible find datasource...... ( i translate from italian ) I'm sure ip i wrote is right , and , moreover, any ip datasource i put ,i get the same error. Thank you in advance for your help.

Hi,

From your description, it seems that you are using WebService as your datasource of your report, right?

And the error "System.Web.Services.Protocols.SoapException" indicates that the WebService failed to return the result which your report expected.

So I suggest that you should try to check your WebService to see if it can work correctly, we suppose that it returns a dataset typed datasource, then you can just write a simple project, remove the reporting service part, try to see if you can retrieve the return properly.

Thanks.

|||Hi Nai-Dong,
I use the webservice as result, distribuiting report I've developed with SQL Server Development intelligence studio.
I'm doing this for the first time , I'm studying how to use SQLServer reporting service.
The webservice "seems" to me that works properly because I see exposed all the methods, and moreover ,
calling the other methods that don't involve datasource , the report is correctly called.
I'm using XP .
Thank you.|||

Hi,

The webservice "seems" to me that works properly because I see exposed all the methods, and moreover , calling the other methods that don't involve datasource , the report is correctly called.

Well, if so. I think you should try to check if the database is available from the machine which host the web service. Another problem is the account. You should try to check if the account which runs the webservice exist in the web service identity of the report server. Also, try to check if the account which runs the webservice (ASPNET or IUSR_MachineName) has to permission to access the reporting service database. If not, add the account into the users of that database.

Besides, I suggest you to refer the following link, it may be helpful to you.

http://msdn2.microsoft.com/en-us/library/aa179578(SQL.80).aspx

Thanks.

DataSizer for 2000

Hi,
I'm trying to estimate the amount of space that will be required for several
import tables.
I've run the DataSizer tool and it calculates the following for a table with
3 INT fields and one REAL field (prec - 24).
Heap Table Data Sizer
Rows in table 137,242,307
Data Row Fixed Len Col Size 16
Number of Columns in data row 4
Number of Variable Length Columns in data row 0
Max Size of Variable Length Data in data row 0
Index Key Fixed Len Col Size 0
Number of Columns in Index Key 0
Number of Variable Length Columns in index key 0
Max Size of Variable Length Data in index key 0
Page size (not configurable) 8192
Page Hdr Size (not configurable) 96
Data Row Size Calculation
Data Row Header 4
Null Bitmap 3
Variable Length Columns Total Size 0
Minimum Row Length 16
Total Row Size 23
Data rows per page 324
Data pages 423588
Table Size 3,470,032,896
This example happens to be an existing table (heap) that reports the
following information via sp_spaceused
rows = 137242307
space used = 3569632 KB
There is about a 100MB difference between the two values returned (table
size est and table size actual). Is the DataSizer tool accurate for SQL
2000? Am I performing the calculation incorrectly?
Thanks
Jerry
Sp_spaceused might use stale information (see the @.updateusage parameter to sp_spaceused and also
DBCC UPDATEUSAGE). Also, you might have less than 100% full pages (see DBCC SHOWCONTIG).
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
Blog: http://solidqualitylearning.com/blogs/tibor/
"Jerry Spivey" <jspivey@.vestas-awt.com> wrote in message
news:%23yVzzudoFHA.1444@.TK2MSFTNGP10.phx.gbl...
> Hi,
> I'm trying to estimate the amount of space that will be required for several import tables.
> I've run the DataSizer tool and it calculates the following for a table with 3 INT fields and one
> REAL field (prec - 24).
> Heap Table Data Sizer
> Rows in table 137,242,307
> Data Row Fixed Len Col Size 16
> Number of Columns in data row 4
> Number of Variable Length Columns in data row 0
> Max Size of Variable Length Data in data row 0
> Index Key Fixed Len Col Size 0
> Number of Columns in Index Key 0
> Number of Variable Length Columns in index key 0
> Max Size of Variable Length Data in index key 0
> Page size (not configurable) 8192
> Page Hdr Size (not configurable) 96
> Data Row Size Calculation
> Data Row Header 4
> Null Bitmap 3
> Variable Length Columns Total Size 0
> Minimum Row Length 16
> Total Row Size 23
> Data rows per page 324
> Data pages 423588
> Table Size 3,470,032,896
>
> This example happens to be an existing table (heap) that reports the following information via
> sp_spaceused
>
> rows = 137242307
> space used = 3569632 KB
> There is about a 100MB difference between the two values returned (table size est and table size
> actual). Is the DataSizer tool accurate for SQL 2000? Am I performing the calculation
> incorrectly?
> Thanks
> Jerry
>
|||Hey Tibor.
I did use the updateusage param of sp_spaceused.
Yea I thought it might be due to fragmentation so I created a clustered
index on the table then dropped the clustered index to recompact the heap
pages. The 137 million rows now consume 3,399,200 KB (apx 70 MB less than
the estimated and about 170 MB less than before with the fragmentation).
Interesting ;-)
Thanks again for the reply.
Jerry
"Tibor Karaszi" <tibor_please.no.email_karaszi@.hotmail.nomail.com> wrote in
message news:eTrz2aeoFHA.3448@.TK2MSFTNGP12.phx.gbl...
> Sp_spaceused might use stale information (see the @.updateusage parameter
> to sp_spaceused and also DBCC UPDATEUSAGE). Also, you might have less than
> 100% full pages (see DBCC SHOWCONTIG).
> --
> Tibor Karaszi, SQL Server MVP
> http://www.karaszi.com/sqlserver/default.asp
> http://www.solidqualitylearning.com/
> Blog: http://solidqualitylearning.com/blogs/tibor/
>
> "Jerry Spivey" <jspivey@.vestas-awt.com> wrote in message
> news:%23yVzzudoFHA.1444@.TK2MSFTNGP10.phx.gbl...
>
|||Hi Jerry,
If I take the numbers from your calculation (3,470,032,896 bytes) and compare to the numbers from
sp_spaceused (I assume) (3,399,200 KB) and convert properly to MB etc, I get:
SELECT KB, KB/1024 AS MB, KB/(1024*1024) AS GB
FROM
(
SELECT 3470032896/1024 AS KB
UNION
SELECT 3399200 AS KB
) AS i
KB MB GB
-- -- --
3388704.000000 3309.28125000000 3.23171997070312500
3399200.000000 3319.53125000000 3.24172973632812500
I.e. a difference of 10 MB, which for a 3.2GB table is pretty close, IMO :-).
Btw, I always select from sysindexes (after updateusage) when I want to get these values. I never
remember whether sp_spaceused uses reserved, dpages or the used column. To be honest, I don't
remember the difference between dpages and used by heart either, so I always look up sysindexes in
BOL.
I should also say that I didn't actually look at your formula/calculation. I was initially focused
on the stale information in sysindexes.
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://www.solidqualitylearning.com/
Blog: http://solidqualitylearning.com/blogs/tibor/
"Jerry Spivey" <jspivey@.vestas-awt.com> wrote in message
news:%23CmI1geoFHA.2472@.TK2MSFTNGP15.phx.gbl...
> Hey Tibor.
> I did use the updateusage param of sp_spaceused.
> Yea I thought it might be due to fragmentation so I created a clustered index on the table then
> dropped the clustered index to recompact the heap pages. The 137 million rows now consume
> 3,399,200 KB (apx 70 MB less than the estimated and about 170 MB less than before with the
> fragmentation).
> Interesting ;-)
> Thanks again for the reply.
> Jerry
> "Tibor Karaszi" <tibor_please.no.email_karaszi@.hotmail.nomail.com> wrote in message
> news:eTrz2aeoFHA.3448@.TK2MSFTNGP12.phx.gbl...
>

DataMining problems

Hello Experts,

I’ve got a logical problem. I’m just a newbie in this theme.

I build a cube with Analysis Services. It works and I can brows the cube.

For Example this could be a possible result:

Color

RedBlueBlackYellow

Auto brand

Opel12

VW214

Mercedes1122

The count shows us how much cars were stolen.

Now I try to build a Data Mining structure that shows me the behavior between the auto brand and the color. (To build the report I used Excel 2007 and the Data Mining AddIn)

After build the Mining Structure the Colum name are 1, 2 or 4 (just the counts).

To search for a better solution I tried to build the report manual. (Now it looked like that)

Auto BrandCollorstolen

OpelRedno

OpelBlueyes

OpelBlackyes

OpelYellowno

VWRedyes

VWBlueyes

VWBlackno

VWYellowyes

MercedesRedyes

MercedesBlueyes

MercedesBlackyes

MercedesYellowyes

Now the Column names are correct and the Data Mining structure is more understandable.

But the second report you can’t build with a cube, because the Measures were just numeric.

My Questions:

- Where is my error?

- How do you build a Data Mining?

- Is there somewhere a tutorial could help me (I just founded tutorials that explains the different works of the different Data Mining Models)

- How would you build this problem in a Mining Structure?

Hope I don’t forget some information and hear you soon

Yours sincerely,

Alex

Please visit our portal site ssdm.com. You can find tutorials, tips and tricks as well as samples there.

As to your problem, it depends on what information you wish to analyze. For example, you can build a data mining model using some classification algorithms (such as decision trees and neural network). If you mark stolen as predictable, you can use your model to predict the probability that some specific type of car got stolen. You can also train a clustering model to assist in exploring your data.

Thanks,