Datasets

[Yuki]

Can one dataset be directly populated with tables from different sources?

Example:
There are 3 .mdb files, with the same schema, and I want 2 tables from each
file. Is there a way I can just create one dataset and put all the tables
into that dataset? (versus creating a dataset for each .mdb then merging the
datasets)
Thanks,
~ Yuki

[Siva M]

Yes, you can. Just pass the same data set object to all the Fill() method
calls of the data adapter, perhaps with a different table name each time.

"Yuki" <Yu**@discussio ns.microsoft.co m> wrote in message
news:7B******** *************** ***********@mic rosoft.com...
Can one dataset be directly populated with tables from different sources?

Example:
There are 3 .mdb files, with the same schema, and I want 2 tables from each
file. Is there a way I can just create one dataset and put all the tables
into that dataset? (versus creating a dataset for each .mdb then merging
the
datasets)
Thanks,
~ Yuki

[Yuki]

Let's see if I understand...

The Fill() method is called through a table adapter or data adapter and
passed a dataset, which it will fill. Right now I have 3 different table
adapters, because I have 3 separate .mdb files, so the code looks like:

this.TableAdapt er.Fill(this.Da taSet.table1); // from
a.mdb
this.TableAdapt er1.Fill(this.D ataSet2.table1) ; // from b.mdb
this.TableAdapt er2.Fill(this.D ataSet3.table1) ; // from c.mdb

If I were to change the part that says DataSet* to just DataSet, in the Fill
method, the complier gives me errors. I'm assuming this is because the table
adapters only like their personal datasets, because of possible schema issues?

Would I need to create a new dataset and define a schema? Or is the issue
with the table adapters?
Thanks,
~ Yuki


"Siva M" wrote:

Yes, you can. Just pass the same data set object to all the Fill() method
calls of the data adapter, perhaps with a different table name each time.

"Yuki" <Yu**@discussio ns.microsoft.co m> wrote in message
news:7B******** *************** ***********@mic rosoft.com...
Can one dataset be directly populated with tables from different sources?

Example:
There are 3 .mdb files, with the same schema, and I want 2 tables from each
file. Is there a way I can just create one dataset and put all the tables
into that dataset? (versus creating a dataset for each .mdb then merging
the
datasets)
Thanks,
~ Yuki

[Mel Weaver]

How about something like this.

using (SqlConnection conn = new SqlConnection(d sn))
{
using (SqlCommand cmd = new SqlCommand())
{
cmd.Connection = conn;

cmd.CommandText = "Select * from database1file"

using (SqlDataAdapter da = new SqlDataAdapter( ))
{
using (DataSet ds = new DataSet())
{

da.SelectComman d = cmd;
da.Fill(ds, "1stTable") ;

cmd.CommandText = "Select * from database2file"
da.SelectComman d = cmd;
da.Fill(ds, "2ndTables" );
}
}
}
}
}


"Yuki" <Yu**@discussio ns.microsoft.co m> wrote in message
news:33******** *************** ***********@mic rosoft.com...

Let's see if I understand...

The Fill() method is called through a table adapter or data adapter and
passed a dataset, which it will fill. Right now I have 3 different table
adapters, because I have 3 separate .mdb files, so the code looks like:

this.TableAdapt er.Fill(this.Da taSet.table1); // from
a.mdb
this.TableAdapt er1.Fill(this.D ataSet2.table1) ; // from
b.mdb
this.TableAdapt er2.Fill(this.D ataSet3.table1) ; // from
c.mdb

If I were to change the part that says DataSet* to just DataSet, in the
Fill
method, the complier gives me errors. I'm assuming this is because the
table
adapters only like their personal datasets, because of possible schema
issues?

Would I need to create a new dataset and define a schema? Or is the issue
with the table adapters?
Thanks,
~ Yuki


"Siva M" wrote:

Yes, you can. Just pass the same data set object to all the Fill() method
calls of the data adapter, perhaps with a different table name each time.

"Yuki" <Yu**@discussio ns.microsoft.co m> wrote in message
news:7B******** *************** ***********@mic rosoft.com...
Can one dataset be directly populated with tables from different sources?

Example:
There are 3 .mdb files, with the same schema, and I want 2 tables from
each
file. Is there a way I can just create one dataset and put all the
tables
into that dataset? (versus creating a dataset for each .mdb then merging
the
datasets)
Thanks,
~ Yuki

[Siva M]

Did you try Mel's code?

"Yuki" <Yu**@discussio ns.microsoft.co m> wrote in message
news:33******** *************** ***********@mic rosoft.com...
Let's see if I understand...

The Fill() method is called through a table adapter or data adapter and
passed a dataset, which it will fill. Right now I have 3 different table
adapters, because I have 3 separate .mdb files, so the code looks like:

this.TableAdapt er.Fill(this.Da taSet.table1); // from
a.mdb
this.TableAdapt er1.Fill(this.D ataSet2.table1) ; // from
b.mdb
this.TableAdapt er2.Fill(this.D ataSet3.table1) ; // from
c.mdb

If I were to change the part that says DataSet* to just DataSet, in the Fill
method, the complier gives me errors. I'm assuming this is because the
table
adapters only like their personal datasets, because of possible schema
issues?

Would I need to create a new dataset and define a schema? Or is the issue
with the table adapters?
Thanks,
~ Yuki


"Siva M" wrote:

Yes, you can. Just pass the same data set object to all the Fill() method
calls of the data adapter, perhaps with a different table name each time.

"Yuki" <Yu**@discussio ns.microsoft.co m> wrote in message
news:7B******** *************** ***********@mic rosoft.com...
Can one dataset be directly populated with tables from different sources?

Example:
There are 3 .mdb files, with the same schema, and I want 2 tables from
each
file. Is there a way I can just create one dataset and put all the tables
into that dataset? (versus creating a dataset for each .mdb then merging
the
datasets)
Thanks,
~ Yuki