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Query A DataTable
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De
02/03/2009 00:10:16
Mike Cole
Yellow Lab Technologies
Stanley, Iowa, États-Unis
 
Information générale
Forum:
ASP.NET
Catégorie:
Code, syntaxe and commandes
Divers
Thread ID:
01384878
Message ID:
01384889
Vues:
45
Kevin Goff posted a method several times that you could use to select distinct products from your table. I don't know what it is, though.

>I have a stored proc that returns the result of a JOIN from a SQL Server database. The data represents products and parts. It's possible to have one or many products returned, and all the parts that correspond to each product. So it will either be a many to many, or a one to many.
>
>Once the data is in ADO, I want to be able to determine of I got back more than one product. So far I have to following code, but to me it seems rather inefficient:
>
>
>bool bMultiProductDS = false;
>
>// Get the first prod number
>string sFirstProductNumber = dsResults.Tables[0].Rows[0]["Product_Number"].ToString().ToLower();
>
>// Define a variable to hold subsequent product numbers
>string sNextProductNumber = "";
>
>// Define a row counter
>int iRow = 0;
>
>// Loop once for each row in the firs table
>foreach(DataRow oRow in dsResults.Tables[0].Rows)
>{
>    // Skip the first row
>    if (iRow == 0)
>    {
>        iRow++;
>        continue;
>    }
>
>    // Get the next product number
>    sNextProductNumber = oRow["Product_Number"].ToString().ToLower();
>
>    if (sFirstProductNumber != sNextProductNumber) ;
>    {
>        bMultiProductDS = true;
>        break;
>    }
>}
>
Very fitting: http://xkcd.com/386/
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