bas2754
asked on
Code to Swap Rows and Columns (Pivot) the Results of a Linq Query
Good evening, I am faced with having to do the following (and preferably not having to manually code something and loop through the results repeatedly). We have a table with about 30 fields in it which we run a Linq query against to pull a set of results that might be a something like the following (subset of data below):
and I need to turn it into this:
Now I know this is probably the simplest thing in the world, but it has been a long time since programming classes for me :) so I am looking for some help.
There are actually about 30 fields in the source table and an average of about 20 results per query we will need to format in this manner. It is basically all records tracking as you may have guessed some data about a persons health status over a period of time.
Thanks in advance!
ID DATE BP HEIGHT WEIGHT PULSE
1 1/1/12 120/70 6'0 210 80
2 1/8/12 120/70 6'0 212 76
3 1/15/12 120/70 6'0 214 60
and I need to turn it into this:
DATE 1/1/12 1/8/12 1/15/12
BP 120/70 120/70 120/70
HEIGHT 6'0 6'0 6'0
WEIGHT 210 212 214
PULSE 80 76 60
Now I know this is probably the simplest thing in the world, but it has been a long time since programming classes for me :) so I am looking for some help.
There are actually about 30 fields in the source table and an average of about 20 results per query we will need to format in this manner. It is basically all records tracking as you may have guessed some data about a persons health status over a period of time.
Thanks in advance!
ASKER
That really isn't at all what I am trying to do. I need to dynamically create each column based on the data that is in the date field. I do not need to sum or count any information, just display it in the format shown above.
In all the examples so far that I have found, the fields have needed to be hard coded into the LINQ query - including the example in the link above.
I basically need to be able to take the column field names from the original table and create a row from each of those column field names with the proper value for that field inserted into the date column of the newly created table.
I am about to just give up and write a very messy set of loops for this, but was hoping for a more elegant LINQ solution.
I am looking for a code snipped example that might be thought out more than just a link to here is something like what you want to do. Please post code that would turn that first table into the second if it is doable.
Thank You again in advance.
In all the examples so far that I have found, the fields have needed to be hard coded into the LINQ query - including the example in the link above.
I basically need to be able to take the column field names from the original table and create a row from each of those column field names with the proper value for that field inserted into the date column of the newly created table.
I am about to just give up and write a very messy set of loops for this, but was hoping for a more elegant LINQ solution.
I am looking for a code snipped example that might be thought out more than just a link to here is something like what you want to do. Please post code that would turn that first table into the second if it is doable.
Thank You again in advance.
ASKER CERTIFIED SOLUTION
membership
This solution is only available to members.
To access this solution, you must be a member of Experts Exchange.
ASKER
Seems that either no one else had a better idea or that no one had a more specific example. The link provided by the one responder was one I had seen already, but as stated I am looking for a way to not have to code any field names into the query.
Unfortunately Links are not answers and since no one else commented or offered solutions and I needed to get this done, I ended up doing it the old fashioned way.
Unfortunately Links are not answers and since no one else commented or offered solutions and I needed to get this done, I ended up doing it the old fashioned way.
this is the answer very similar for your needs and data columns:
Using lambda or LINQ for pivot tables
hi