Plateforme Level Extreme
Abonnement
Profil corporatif
Produits & Services
Support
Légal
English
How to create DataSet from SqlSelect with parameter?
Message
 
 
À
29/11/2007 14:34:11
Mike Cole
Yellow Lab Technologies
Stanley, Iowa, États-Unis
Information générale
Forum:
ASP.NET
Catégorie:
ADO.NET
Versions des environnements
Environment:
C# 2.0
Divers
Thread ID:
01272138
Message ID:
01272228
Vues:
17
>>>I have created data reader with parameters many times but now I need to create a dataset and I am lost.
>>>
>>>Here is an example:
>>>
>>>
>>>OleDbConnection oDbConnection = new OleDbConnection
>>>(connectionString);
>>>
>>>string strSqlCommand = "select * MYTABLE where MYFIELD(?)";
>>>
>>>OleDbDataAdapter objAdapter = new OleDbDataAdapter(strSqlCommand,
>>>oDbConnection);
>>>
>>>DataSet dsMyTable = new DataSet();
>>>
>>>objAdapter.Fill(dsMyTable, "tblMyTable");
>>>
>>>
>>>
>>>Somewhere above I have to specify parameter for field MYFIELD but I don't know how and where.
>>>
>>>Thank you in advance for any help.
>>
>>
>>I found out that I probably need to add the parameret to the Adapter object, as following:
>>
>>
>>objAdapter.GetFillParameters()[0].Value = nMyValue;
>>
>>
>>But I get an error on this line that index is invalid. So I think I need to find a way to specify that the adapter takes so many paramenters. I can't find how to do it so far.
>
>Dmitry,
>I usually use parameters with SPROCS instead of with straight SQL, so I don't know exactly what you need to do, but I think you are specifying your parameter incorrectly in your SQL.
>
>Try changing you SQL to something like this:
>
>"select * MYTABLE where MYFIELD = @MyFieldParm";
>
>and your code to something like this:
>
>objAdapter.GetFillParameters()["@MyFieldParm"].Value = nMyValue;
>
Mike,

In this particular case I am not using stored procedure, but rather getting data from VFP database using OleDb Driver.

Thank you.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
"If a nation values anything more than freedom, it will lose its freedom; and the irony of it is that if it is comfort or money that it values more, it will lose that too." W.Somerset Maugham
Précédent
Répondre
Fil
Voir

Click here to load this message in the networking platform