Comparing two datatables

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How to compare two datatables and highlight the particular cell WITHOUT USING LOOPS?

Posted 3-Apr-11 21:31pm

Ashishmau

Updated 3-Apr-11 21:37pm

Abhinav S

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BobJanova 4-Apr-11 6:00am

Why 'without using loops'? C# does most things like this with loops ...

Are the DataTables in memory or do you want to compare them with a database query? Are they the result of queries on the same table (i.e. you only need to check key fields)? Does order matter?

Ashishmau 4-Apr-11 6:51am

I want to compare two same datatables with some cells different and want to highlight that particular cell . I dont want to use looping as it will take more time if no. of rows increases.

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Abhinav S · Answer 1 · 2011-04-03T21:38:00

Solution 1

You could always write some logic to compare the collections behind the datagrids.
Once you know what is different, just change the colors of the cell for those values in the datagrid.

Posted 3-Apr-11 21:38pm

Abhinav S

*dan!sh* · Answer 2 · 2011-04-03T21:40:00

Solution 2

You should describe what do you mean when you say compare. BTW if you need to know the differences, this may work:

If both the tables have same schema, then you can do this using ID comparison. Use LINQ to get the IDs in lists and then compare them using Except.

Posted 3-Apr-11 21:40pm

dan!sh

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BobJanova 4-Apr-11 5:58am

I think you forgot to post the code under 'this may work:'.

dan!sh 4-Apr-11 6:23am

No. I posted the way for doing it rather than giving the code.