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Please suppy at least enough code snippets for someone else to understand what you've tried, and which part is not working. Your present question is sufficiently vague that no one is likely to respond.
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as I said, I am new to this so here is what I have done;
<br />
private bool uploadData(string myPath, string txtUpload)<br />
{<br />
bool bNoError = true;<br />
string strConnection = "Provider=Microsoft.Jet.OLEDB.4.0;" +<br />
"Data Source=" +myPath +txtUpload +";";<br />
<br />
OleDbConnection con = new OleDbConnection(strConnection);<br />
con.Open();<br />
<br />
<br />
try<br />
{<br />
DataSet dsEWEtmp = new DataSet();<br />
<br />
OleDbDataAdapter daEWEForm = new OleDbDataAdapter("SELECT * FROM Some_Form", con);<br />
<br />
<br />
int updates = daEWEForm.Fill(dsEWEtmp, "Some_Form");<br />
foreach (DataRow dataRow in dsEWEtmp.Tables)<br />
{<br />
dsEWEtmp.Tables[0].ImportRow(dataRow);<br />
dsEWEtmp.Tables[0].AcceptChanges();<br />
}<br />
<br />
updates = daEWEForm.Update(dsEWEtmp);<br />
<br />
DataTable tblEWEForm;<br />
tblEWEForm = dsEWEtmp.Tables[0];<br />
<br />
OleDbCommandBuilder objCommandBuilder = new OleDbCommandBuilder(daEWEForm);<br />
daEWEForm.Update(dsEWEtmp, "Some_Form");<br />
}<br />
catch(Exception err)<br />
{<br />
string str = err.Message;<br />
bNoError = false;<br />
<br />
}<br />
finally<br />
{<br />
if (con.State.ToString() =="Open")<br />
{<br />
con.Close();<br />
}<br />
}<br />
return bNoError;
As I stated I have the file that I upload; then if there is an uploaded file, it is "supposed" to read that file into a dataset and write it to the master database. In my web.config file, the master database resides at strConnection2, the uploaded file is at strConnection. I am really confused how to access them both, one to get the data from the uploaded file and two connect to the master database and write to it.
Is that better? Please help if you can. Thanks!
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You grab your data from strConnection and stored it in the DataSet dsEWEtmp. Now go ahead and open up strConnection2 and insert the data. I'm pretty sure you can find how to insert from dataset very easily from this site.
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Wow, I can't believe someone gave me 1 point because I didn't put the codes up. Isn't this a C# question anyways?
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It probably is a C# question, but as I said, I am new to all this and for me; it has to do with databases as well as the code behind. I don't know who gave you one point, but a little code for pointing in the right direction would have helped. Thanks.  
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First, you need two different connections, one for the input database, the other for the output. If the data in the "upload" copy is just to be appended to the "master" copy (no changes to existing rows in the master), then I would open a data reader on the "upload" table, and use an isert query to insert rows to the master while reading rows from the updload - psuedocode:
ConnMaster.Open(masterconnstring);
ConUpload.Open(uploadConnString);
string sql = "insert into master_table (f1,f2,f3) values (?,?,?)"
OledbCommand cmmd = new OleDbCommand(ConnMaster,sql);
using (Datareader dr = ConnUpload.Executereader("select f1,f2,f3from upload table");)
{
while (dr.Read())
{
try{
cmd.parameters.clear();
cmd.parameters.add(new oledbparameter("p1",dr[0].getvalue());
cmd.parameters.add("p2",dr[1].getvalue());
cmd.parameters.add("p3",dr[2].getvalue());
cmd.execute();
}
catch(oledbexception e)
{
logdata("insert failed" + e.tostring());
}
}
}
code not exact, please look up correct syntax .
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Thanks for your help Rob, but I am not exactly sure where this code would go; after the dset is defined or ??? Also, the insert into (f1,f2,f3) values (?,?,?)" I want to copy all columns, can I put insert into (*)" and leave off values?
Sorry to be such a pain, but like I said, I am REALLY new to this and still shakey on my feet (code  )
Thank you again for being such a help to such a bother  ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
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L wrote: can I put insert into (*)" and leave off values?
No, you need to explicitly name the columns (since these are different connections and different databases, * wont work (and is bad practice in any case). Also, the number of columns must match the number of values in the values clause. The order of the parameters must match the field name order.
You don't need the dataset at all. It's not helping you. The datareader is a fast replacement for the dataset in this case, it represents the results from the query as a collection of rows that can be read once only in forward order.
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Rob,
the following is my code...still having problems. Could you please take a look?  
<br />
<small>OleDbConnection con = new OleDbConnection(strConnection);<br />
<br />
OleDbConnection con2 = new OleDbConnection(strConnection2);<br />
<br />
con.Open();<br />
con2.Open();<br />
string strSQL = "INSERT INTO First_Table([OID]) values (@OID)";<br />
string strSQL2 = "Select [OID] From First_Table";<br />
OleDbCommand cmd2 = new OleDbCommand(strSQL2,con2);<br />
<br />
OleDbCommand cmd = new OleDbCommand(strSQL,con);<br />
<br />
OleDbDataReader dr = cmd.ExecuteReader();<br />
<br />
<br />
while (dr.Read())<br />
{<br />
try<br />
{<br />
<br />
cmd.Parameters.Add (new OleDbParameter("OID",dr[0].ToString()));<br />
cmd.ExecuteReader();<br />
} <br />
catch (Exception err)<br />
{ <br />
string str=err.Message;<br />
bNoError=false;<br />
<br />
} <br />
finally<br />
{<br />
if (con.State.ToString() == "Open")<br />
con.Close();<br />
if (con2.State.ToString() == "Open")<br />
con2.Close();<br />
}</small><br />
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You need to clear your parameters collection after executing the cmd. Also, don't use executereader here (the insert command), you don't need it and it can only cause problems, use cmd.execute instead. Even if executereader was a typo, continually adding the same parameter (even with a different value) to the parameters collection will cause errors.
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Hi all,
Possibly my first post, if not certainly for a while.
I have a simple C# program which is creating a table in a MySQL db, I want to know how to find out if the table exists already before creating the table. Had a look on the net and here, nothing really answers my question.
Can anyone help?
FYI: Running, VS2005, MySql 5.0.41 and .NET Framework 2
Thanks
AD2
Do not disturb, I'm disturbed enough as it is!
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Try IF NOT EXISTS `Schema`.`Table` to test the table.
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This is the table creation syntax
CREATE TABLE IF NOT EXISTS YourTableName
(create_definition,...)
[table_option] ...Is this what you are looking for ?
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I'm aware of this capability, however there is potential for the table structure to change and if it exists there was problem when the function ran previously and I would want to delete the table.
The program is being used to update a MySQL Db from an Access db
Is IF NOT EXISTS an instruction in its own right?
Do not disturb, I'm disturbed enough as it is!
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Have a look at OdbcConnection.GetSchema. This should help you.
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I want to script a database in sql 2005, i only succeeded in scripting only the objects, but without tables data. How do i achieve my mission
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You can also use the AFC Data Unoader - its free.
AFC Data Unloader
Bob
Ashfield Consultants Ltd
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Hi,
I installed SQL Server 2005 on my pc, but i didn't get default databases like(northwind, adventureworks...etc).
anybody help me how to get/install these default databases
steps or link will be appriciated.
thanks
Ramana
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what is the difference between sql,ms sql and sqlserver 2000
Signature preview salil_k_singh 11:06 15 Jul '07
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SQL is the generic term for the programming language used to query databases, for example select column1 from table1
MS SQL is the gerneric term for Microsft's implementation of SQL or it is sometimes used as the generic name for any of Microsoft's SQL Server versions
SQL Server 2000 is s specific version of Microsoftd database system, SQL Server
Hope this clarifies
Bob
Ashfield Consultants Ltd
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This sounds like a homework problem
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Hi All,
I have some prob in c#.So i want to CREATE a TABLE on Button's "click" event.That's mean when I click on "ok" botton "a new table have to create on my existing DATABASE ".So how i do it in C#..?
ReGardZ
"ChiNthaKa"
CheeN
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The same as you do any other time, issue a CREATE TABLE command - for example
CREATE TABLE Fred(Column1 int NOT NULL, Column2 varchar(50) NULL...etc)
Bob
Ashfield Consultants Ltd
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