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Fastest Method to get data from database to excel (C#)
- Thread starter leto100
- Start date
ETL (Extract Transform Load)
I have seen 2 implementations of this SSIS (MS) and Rhino.ETL (OSS). I favor Rhino.ETL as it's part of the Rhino.Tools stack and is easily testable.
If you don't have Access to SSIS and you don't want to figure out Rhino.ETL. Then your options are limited. One thing to consider is the amount of data. It may be beneficial to query the database in chunks rather then select all records at once and pull into memory.
Jason Meckley
Programmer
Specialty Bakers, Inc.
faq855-7190
I have seen 2 implementations of this SSIS (MS) and Rhino.ETL (OSS). I favor Rhino.ETL as it's part of the Rhino.Tools stack and is easily testable.
If you don't have Access to SSIS and you don't want to figure out Rhino.ETL. Then your options are limited. One thing to consider is the amount of data. It may be beneficial to query the database in chunks rather then select all records at once and pull into memory.
Jason Meckley
Programmer
Specialty Bakers, Inc.
faq855-7190
- Thread starter
- #3
I am not sure if SSIS will work because I don't think generic users can call SSIS packages without much permission hassles.
I have a winforms application, and a user would select which report they want to publish to excel. Thus, some paramters would need to be passed to the SSIS package. There also would be some runtime formatting and data placement logic to take into account.
To keep it coupled with my application, I was thinking of just using the Microsoft.Office.Interop.Excel assembly in my winforms application. Thoughts?
I have a winforms application, and a user would select which report they want to publish to excel. Thus, some paramters would need to be passed to the SSIS package. There also would be some runtime formatting and data placement logic to take into account.
To keep it coupled with my application, I was thinking of just using the Microsoft.Office.Interop.Excel assembly in my winforms application. Thoughts?
the details of how you get the data into excel aren't really important. whether you use the Excel Interop assemblies, XML for XLS, or some other 3rd party library, it just an implementation detail.
I think your biggest concerns are:
1. how much data at any given time must be feed into Excel?
2. how often will this need to happen?
3. how current does the data have to be?
if you are talking about 100,000+ records. then this probably should not be done real-time. Either run this offline (non-core business hours) or near time, using some async techniques.
is this operation hourly, daily, weekly, monthly, sporadic, at a users discretion? If it doesn't happen that often then you could let this happen in the background. No need to have the actual computation on every single client.
do you need real-time, near-time or some other freshness of data? real time being right now. near-time being close to now as possible without making the user wait. Or, do you need records dated last month? in that case you could have a windows service create the file on the 1st of every month for the previous month. then the user just downloads the file. they don't need to wait for computation.
those are my thoughts anyway.
Jason Meckley
Programmer
Specialty Bakers, Inc.
faq855-7190
I think your biggest concerns are:
1. how much data at any given time must be feed into Excel?
2. how often will this need to happen?
3. how current does the data have to be?
if you are talking about 100,000+ records. then this probably should not be done real-time. Either run this offline (non-core business hours) or near time, using some async techniques.
is this operation hourly, daily, weekly, monthly, sporadic, at a users discretion? If it doesn't happen that often then you could let this happen in the background. No need to have the actual computation on every single client.
do you need real-time, near-time or some other freshness of data? real time being right now. near-time being close to now as possible without making the user wait. Or, do you need records dated last month? in that case you could have a windows service create the file on the 1st of every month for the previous month. then the user just downloads the file. they don't need to wait for computation.
those are my thoughts anyway.
Jason Meckley
Programmer
Specialty Bakers, Inc.
faq855-7190
alvechurchdata
Programmer
If it's in a database table whose format is understood by Excel then it might be easier to use some VBA in Excel to pull it in rather than trying to push it.
Geoff Franklin
Geoff Franklin
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