How to delete rows from Dataset table using Linq

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How to delete rows from Dataset table using Linq? pls help

Posted 5-Jan-12 2:08am

vivektp

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Not Active · Answer 1 · 2012-01-05T02:18:00

Solution 1

If you have a DataTable why would you need to use Linq? Linq is not some unique all powerful language/tool that must be used.

Posted 5-Jan-12 2:18am

Not Active

bbirajdar · Answer 2 · 2012-01-05T04:10:00

Solution 3

You cannot directly delete the rows from datatable. However you can use this alternative trick with LINQ

C#

var query = from p in dataTable.AsEnumerable() 
                                    
where p.Field<string>("OrderNo").Trim() != orderN.Trim() 
                                   
 select p; 
                        
if (query.Count<datarow>() > 0) 
                        
{ 
                            
//Creating a table from the query 
                            
dataTable = query.CopyToDataTable<datarow>(); 
                        
}

Posted 5-Jan-12 4:10am

bbirajdar

Updated 5-Jan-12 19:07pm

v3

Comments

[no name] 5-Jan-12 21:26pm

Why can't you delete from a DataTable?

"...is as powerful as LINQ"?? You are using linq.

You haven't deleted anything with this solution.

bbirajdar 6-Jan-12 1:24am

Mark, instead of downvoting my solution, you should have posted the solution with some code sample.

[no name] 6-Jan-12 8:34am

Not all solutions require code. The down vote is justified because you didn't even answer the question posted. Live with it or post a better solution that answers the question.

bbirajdar 6-Jan-12 1:24am

And if you can't 'read' the code above, try executing it. I also invite you to make performance tests on it with the other option using 'foreach' loop and deleting one DataRow at a time from the Datatable.

[no name] 6-Jan-12 8:35am

If you can't "read" the question, then don't post a solution. No where was there any concern about performance. Your solution just didn't answer the question.