472,352 Members | 1,579 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 472,352 software developers and data experts.

Change Database at Runtime for Crystal Report

I'm developing an application in VS.Net 2003 using C#, which uses Crystal
Reports.

When creating each report, crystal asks where the database to use is, so I
specify our SQL server using the ADO option. The problem is that these
database settings seem to get compiled into the report, so when we take the
application to our client it won't work on their systems.

Before running each report I run some code which is ment to reset the
database information to the correct settings (used by our client) for each
table. The problem is that the report has an SQL Query Command embedded in
it (this query unions two select statements), which when in design view in
crystal it just looks like another database table. The code which runs seems
to update the database information, but cannot update the location setting
for the query and therefore when the report is run, it will keep trying to
look at the SQL Server we used for development.

The Crystal Help suggests something like:
TableLogOnInfo logOnInfo = new TableLogOnInfo();
// Loop through every table in the report.
for(int i=0;i<report.Database.Tables.Count;i++)
{
// Set the connection information for the current table.
logOnInfo.ConnectionInfo.ServerName = DataSource;
logOnInfo.ConnectionInfo.DatabaseName = DatabaseName;
logOnInfo.ConnectionInfo.UserID = Username;
logOnInfo.ConnectionInfo.Password = Password;
report.Database.Tables[i].ApplyLogOnInfo(logOnInfo);
}

This doesn't work unless you add:
report.Database.Tables[i].Location = DatabaseName.dbo.TableName

The problem with this is that when it gets to the table called "Command"
which is the SQL Query, Crystal throws an exception because it decides that
"Command" is not a valid table in the specified database.

If you get the code to ignore the "Command" query/table then the report will
continue trying to access our SQL Server for this one query and not the
other one specified.

I've made sure that the SQL Query doesn't have any occurances of
"dbo.tablename" and instead just has "tablename". Both methods fail.

Does anyone know how to update the connection details for a SQL Command in
Crystal?

Thanks,
Grant
Nov 22 '05 #1
4 12692
> I'm developing an application in VS.Net 2003 using C#, which uses Crystal
Reports.
Poor soul - you have my sympathies. :)

When creating each report, crystal asks where the database to use is, so I
specify our SQL server using the ADO option. The problem is that these
database settings seem to get compiled into the report, so when we take the application to our client it won't work on their systems.


About 18months ago, I discovered that this was happening to our reports
also, in v9 evaluation and the version that ships with VS.NET. Everything
changes except the database when you set the connection details at runtime.
If you are using SQL Server you can run a trace and notice that it tries to
access the original database that the report was developed against,
regardless of your code. We develop against what is essentially an
arbitrary named database, so this is a major problem for us too.
Nov 22 '05 #2
> When creating each report, crystal asks where the database to use is, so I
specify our SQL server using the ADO option. The problem is that these
database settings seem to get compiled into the report, so when we take the application to our client it won't work on their systems.


(Whoops - sent the message before I finished! Wrong key combo..)

I filed a bug report to Crystal/Seagate over a year ago about the fact the
database does not reflect changes at runtime, but the last evaluation I
downloaded still hadn't addressed this problem. I also got into
conversations with other users facing this problem who also reported or had
no help from Crystal support. All in all, it sucks. Version 8 doesn't
suffer from this, so we use that through COM.

I don't think it helps that it manifests itself as an addressed issue
(completely unrelated) that they provide a "fix" for. So while it doesn't
exactly help you out, at least you know you're not alone and (as far as I'm
willing to guess) it's not your fault :)

(btw, we use ODBC access to our database[s] not ADO directly, but the
problem seems to persist)

K.
Nov 22 '05 #3
Hello,

Thanks for the reply, its good to know its not just my code. I guess I'll
have to work around it somehow.

One question, is it just the Database Name that cannot be changed at runtime
but the Database Server, Username and Password can be changed?
Because if this is the case then I can probably live with it, although it
will make testing the software against our development database and our
clients database a little more annoying.

Thanks for the help,
Grant
"Kev Sherratt" <k.********@lancaster.ac.uk> wrote in message
news:c9**********@alliance.lancs.ac.uk...
When creating each report, crystal asks where the database to use is, so I specify our SQL server using the ADO option. The problem is that these
database settings seem to get compiled into the report, so when we take the
application to our client it won't work on their systems.


(Whoops - sent the message before I finished! Wrong key combo..)

I filed a bug report to Crystal/Seagate over a year ago about the fact the
database does not reflect changes at runtime, but the last evaluation I
downloaded still hadn't addressed this problem. I also got into
conversations with other users facing this problem who also reported or

had no help from Crystal support. All in all, it sucks. Version 8 doesn't
suffer from this, so we use that through COM.

I don't think it helps that it manifests itself as an addressed issue
(completely unrelated) that they provide a "fix" for. So while it doesn't
exactly help you out, at least you know you're not alone and (as far as I'm willing to guess) it's not your fault :)

(btw, we use ODBC access to our database[s] not ADO directly, but the
problem seems to persist)

K.

Nov 22 '05 #4
> One question, is it just the Database Name that cannot be changed at
runtime
but the Database Server, Username and Password can be changed?
Because if this is the case then I can probably live with it, although it
will make testing the software against our development database and our
clients database a little more annoying.


From what I've experienced, yes, it's just the database name (this is with
ODBC and a minor ADO testing with SQL Server.) But of course, your mileage
may vary and it'd be best to make sure this is the case with you too,
obviously.

Best of luck.
Nov 22 '05 #5

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

1
by: munish | last post by:
I am using pull model in crystal reports.For simplicity I m using only one table in SQL Server. I have tried following code to change my database:...
4
by: Grant Stanley | last post by:
I'm developing an application in VS.Net 2003 using C#, which uses Crystal Reports. When creating each report, crystal asks where the database to...
0
by: Arif | last post by:
MY crystal report is using Access database. At design time i set file path for report. But i want that i can change this path at runtime so that my...
7
by: Henry | last post by:
I am writing a Windows forms VB.Net/MS SQL application via VS 2003 that utilizes Crystal Reports. I want to be able to dynamically set the report...
0
by: Ray | last post by:
Dear all, Now I am using the report document in vb.net to call the crystal report and I will set the database information in the report document....
6
by: pearsons_11114 | last post by:
Changing connection info at run time with Crystal does not seem to work as advertised. I've tried the code in the documentation and the code that's...
1
by: ngpost1 | last post by:
I have a Crystal Reports.Net report being generated from my C# application. I would like to change the background color of the details section...
4
by: Rodo | last post by:
Hi all, I'm new to this whole thing. I have a bunch of text files that are created by a software at work that keeps info one of our products....
0
by: hemu4hemang | last post by:
Hi Friends I m working on one application in Vb.net and Sql server and crystal report 9.0. This...
7
OuTCasT
by: OuTCasT | last post by:
I know how to change the database and sqlserver for a crystal report Dim report As New ReportDocument Dim connection As IConnectionInfo ...
1
by: Kemmylinns12 | last post by:
Blockchain technology has emerged as a transformative force in the business world, offering unprecedented opportunities for innovation and...
0
by: Naresh1 | last post by:
What is WebLogic Admin Training? WebLogic Admin Training is a specialized program designed to equip individuals with the skills and knowledge...
0
by: antdb | last post by:
Ⅰ. Advantage of AntDB: hyper-convergence + streaming processing engine In the overall architecture, a new "hyper-convergence" concept was...
0
by: Matthew3360 | last post by:
Hi there. I have been struggling to find out how to use a variable as my location in my header redirect function. Here is my code. ...
0
by: AndyPSV | last post by:
HOW CAN I CREATE AN AI with an .executable file that would suck all files in the folder and on my computerHOW CAN I CREATE AN AI with an .executable...
0
by: Arjunsri | last post by:
I have a Redshift database that I need to use as an import data source. I have configured the DSN connection using the server, port, database, and...
0
by: Matthew3360 | last post by:
Hi, I have been trying to connect to a local host using php curl. But I am finding it hard to do this. I am doing the curl get request from my web...
0
Oralloy
by: Oralloy | last post by:
Hello Folks, I am trying to hook up a CPU which I designed using SystemC to I/O pins on an FPGA. My problem (spelled failure) is with the...
0
BLUEPANDA
by: BLUEPANDA | last post by:
At BluePanda Dev, we're passionate about building high-quality software and sharing our knowledge with the community. That's why we've created a SaaS...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.