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How do I Fill a DataSet with different tables without recreating the adapter?

Posted on 2007-11-21
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Last Modified: 2013-11-07
I'm using ASP.NET 2.0 / C# and I have several SELECT statements that I will be using to fill up a DataSet with DataTables. But I'm stuck recreating the dataadapters. See here:

    OdbcConnection conn = new OdbcConnection(connString);    
    DataSet ds = new DataSet();

    sqlSelect = "SELECT ordid, date FROM orders";
    OdbcDataAdapter ad = new OdbcDataAdapter(sqlSelect, conn);
    ad.Fill(ds, "Orders");

    sqlSelect = "SELECT customerid, misc1 FROM customers";
    OdbcDataAdapter adx = new OdbcDataAdapter(sqlSelect, conn);
    adx.Fill(ds, "Customers");

Notice how I have OdbcDataAdapter adx = new OdbcDataAdapter. How do I declase the OdbcDataAdapter at the top and reuse it?
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Question by:bemara57
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2 Comments
 
LVL 12

Expert Comment

by:Mortaza Doulaty
ID: 20329932
You can each time create new commands and set it as the adapter's select command.
or you can simply change the SelectCommand.CommandText of the adapter to your new sql...

Like this:

OdbcConnection conn = new OdbcConnection(connString);    
DataSet ds = new DataSet();
 
sqlSelect = "SELECT ordid, date FROM orders";
OdbcDataAdapter ad = new OdbcDataAdapter(sqlSelect, conn);
ad.Fill(ds, "Orders");
 
sqlSelect = "SELECT customerid, misc1 FROM customers";
ad.SelectCommand.CommandText=sqlSelect;
adx.Fill(ds, "Customers");

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LVL 12

Accepted Solution

by:
Mortaza Doulaty earned 500 total points
ID: 20329945
Sorry, the last line should change to:
ad.Fill(ds, "Customers");

So your code looks like:
OdbcConnection conn = new OdbcConnection(connString);    
DataSet ds = new DataSet();
 
sqlSelect = "SELECT ordid, date FROM orders";
OdbcDataAdapter ad = new OdbcDataAdapter(sqlSelect, conn);
ad.Fill(ds, "Orders");
 
sqlSelect = "SELECT customerid, misc1 FROM customers";
ad.SelectCommand.CommandText=sqlSelect;
ad.Fill(ds, "Customers");

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0

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