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I'm creating a contract database that has over 80 different calculations and formulas. I'm using one table with fields and one query for formulas. I need to run/update query through the browser. Does anyone have any idea how this should be done? I'm using this SQL statement in the query, maybe there is a better SQL statement I can use to automatically update my fields in the table? Please help!
I appreciate any help from you guys.
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1. I have an application (SDI) which works with database
that is, retrieves data and the data are displayed in Edit Boxes and Statics
I want to send these data to another program, MS Word in my case
how to do this ?
2. Is it possible with ADO?
thank you.
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You ought to use WinWord's COM API, e.g. create a new Word document, insert a table, and fill it in with the data from your database.
Alexandre Kojevnikov
MCP (SQL2K)
Leuven, Belgium
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I want to count the number of records.... and display it in my web-page using my ASp page. I know that the "Select count(*) from table" will give the count in the database.
How can I retrive the 'result' from that query and pass it on to my ASP page??
Any help?
I was born intelligent
Education ruined me!.
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Off the top of my head it goes something like this (there might be some mistakes since I haven't tested it):
<script language=vbscript runat=server>
Dim ADOConn
Dim ADORs
Dim RecordCount
set ADOConn = CreateObject("ADODB.Connection")
ADOConn.Open(myConnectionString)
set ADORs = ADOConn.Execute("select count(*) as NumRecords from MyTable")
if not ADORs.BOF and not ADORs.EOF then
RecordCount = ADORs.Fields("NumRecords").Value
end if
ADORs.Close
ADOConn.Close
Response.Write "# Records: " & RecordCount
</script>
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The fact that you're using a <script runat="server"> tag says that you're using .NET.
Therefore:
1. Use .NET the proper way with code behinds and a literal control
2. Use .NET the proper way with ADO.NET rather than ADO and late binding
Those are where your problems lie - your using legacy code in a new environment.
If you use ADO.NET, to get your record count just go get the value of myDataset.Tables(0).Rows.Count.
Tatham Oddie (VB.NET/C#/ASP.NET/VB6/ASP/JavaScript)
tatham@e-oddie.com
+61 414 275 989
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 Actually, you're wrong there.
The <script runat="server"> tag was there long before .NET was developed. It's how script is run server-side in ASP.
Tatham wrote:
Those are where your problems lie - your using legacy code in a new environment.
Since the grandparent post asked for "ASP" and not "ASP.NET", I answered using VBScript which is the de-facto standard for using server side scripting in ASP.
Not everyone is using .NET yet.
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I just installed SQL Server on my machine, and found that it was
really slow! I even had to wait for quite a while when
create a table or open an empty table in the Enterrpise
Manager. Accessing it from a program is also painfully
slow. I got SQL Server SP2 installed as well, but didn't
solve the problem. Any ideas?
Thanks a lot!
Wenrich
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What machine/spec are you running it on? Memory, OS, Clock-Speed, Harddisk ( fragmentation) all plays a part on the overall speed.
Notorious SMC
The difference between the almost-right word & the right word is a really large matter - it's the difference between the lightning bug and the Lightning
Mark Twain
Get your facts first, and then you can distort them as much as you please
Mark Twain
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You can try to reinstall.
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what is the easiest way to count the total records in C#? can I have an example please?
Jassim Rahma
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Select count(*) from tablename
This will return one record and its number of records.
Mazy
"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits
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Use alias name:
Select Count(*) as total from tablename
Display result:
response.write(rs("total"))
dungnv
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Hi all,
I have a disconnected dataset in a remoting smart client application.
If I insert and update rows at client data set, I can send it back to the server, call the Update() command and everything works fine.
However, when I delete a row and send the dataset back to the server, I get a concurrency violation and the database is not modified.
So update and insert work, delete doesn't.
Any ideas why this could be? I lost a whole day looking for a solution but still haven't found it :-/
Kind regards,
Ludwig
Ludwig
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Use GetChanges() function.
p.s:Do you use Access or SQLServer?
Mazy
"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits
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Hi there,
well, in short, I use the following approach:
- at client side, I have a typed dataset connected to a listbox. If I select an item in the listbox and hit a delete button, that dataset is serialized and sent to the server through the http-channel.
- at server side, it is deserialized and written to the database:
SqlDataAdapter sqlda = new SqlDataAdapter("select * from tbSearch", sqlcon)
SqlCommandBuilder sqlcomb = new SqlCommandBuilder(sqlda);
sqlda.Update(dsetUserSearches, dsetUserSearches.tbSearch.TableName);
dsetUserSearches.AcceptChanges();
I then send this dataset dsetUserSearches back to the client, where it is merged with the client dataset:
dsetUserSearches.Merge(us, false);
This works with updates and insertions, but it does not when I delete items in the listbox. The strange thing is, that it works the first time, it doesn't the second time, it does the third time, it doesn't the 4th time, etc...
The error I get is 'concurrency violation'.
I'm stuck here....
PS - I'm using sql server
Ludwig
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Well,I don't know about the way you did it,but I use a function like this to save changes,and it works fine me.May you can make some change to use in server and client side:
private System.Data.DataSet deletedRows;
private System.Data.DataSet updatedRows;
private System.Data.DataSet insertedRows;
private bool save()
{
deletedRows=null;
updatedRows=null;
insertedRows=null;
try
{
deletedRows = myDataSet1.GetChanges(System.Data.DataRowState.Deleted);
if(deletedRows != null)
mysqlAdapter.Update(myDataSet1 , "Table1");
updatedRows = myDataSet1.GetChanges(System.Data.DataRowState.Modified);
if(updatedRows !=null)
mysqlAdapter.Update(myDataSet1 , "Table1");
insertedRows = myDataSet1.GetChanges(System.Data.DataRowState.Added);
if(insertedRows !=null)
mysqlAdapter.Update(myDataSet1 , "Table1");
return true;
}
catch(Exception myE)
{
MessageBox.Show("Problem!!" + myE.ToString() );
return false;
}
}
I call this function when I want to make database updated when I use disconnected dataset.
Mazy
"And the carpet needs a haircut, and the spotlight looks like a prison break
And the telephone's out of cigarettes, and the balcony is on the make
And the piano has been drinking, the piano has been drinking...not me...not me-Tom Waits
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Just a thought:
maybe it has something to do with the fact that the client dataset rows are different than the database rows. It only occurs after I delete something. Maybe it has something to do with the auto-increment field in my datatable? If I delete the last row in the client dataset, send it to the server and update the database, what happens to the autonumber? On the database, if the last row was number 61, then 61 is gone and the next number would be 62. But is this also the case on client side? If not, maybe this is what causing the concurrency violation.
The idea would be to make sure that client dataset rows are equal to database rows, only question is, how do I do that?
Ludwig
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From my experience with databases, cuncurrency usually occurs when you violate relationship rules. For example, if Table A is a composite table with relationship to Table B, and if a row in Table B is deleted, concurrency error occurs because the values in Table A just became invalid
Also, from what i know, commandbuilder doen't work with datasets with multiple tables
Does that help?
Notorious SMC
The difference between the almost-right word & the right word is a really large matter - it's the difference between the lightning bug and the Lightning
Mark Twain
Get your facts first, and then you can distort them as much as you please
Mark Twain
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Well, I found the reason.
When a new row is inserted in my dataset at client side, the autonumber column for that row receives a number that is equal to the previous rownumber + 1, for example 10.
The dataset is then sent to the server, where it is written back to the database. However, the autonumber of the new row in the database is not always the previous autonumber + 1, for example if you previously deleted the last row in the database. In this example, it will be 11.
At this point, the dataset at client side and the database rows are not consistent anymore.
Solution: after the database has been updated, the updated dataset has to be sent back to the client. But first, the autonumber column of the new row has to be adjusted to the real database autonumber (by using the RowUpdated event handler).
At client side, the new row at the original client dataset is first purged; then it is merged with the new dataset coming from the server, and then AcceptChanges() is called.
After this, the client dataset is equal to the database rows, and concurrency violation won't occur.
 It was a day work to find this one 
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lustuyck wrote:
It was a day work to find this one
Well, you know what they say, better a day than a week 
Glad you found the problem!
Notorious SMC
The difference between the almost-right word & the right word is a really large matter - it's the difference between the lightning bug and the Lightning
Mark Twain
Get your facts first, and then you can distort them as much as you please
Mark Twain
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Hello, I have extreamly huge table and I want to show it in DataGrid. How can I read this table from DB by parts (oracle database and c# client)? I dont want to select each data part from server (select first N-records then next N-records ...).
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