Get number of Rows affected using LINQ

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I am using LINQ query to update a DataTable. Is their any possibility to get the number of rows affected while executing the query? following is the query i was using, it works fine at all but i have to take the count of rows affected.

C#

dataTable.Select(string.Format("[rollNumber]>'{0}'", 10))
        .ToList<DataRow>()
        .ForEach(r =>
        {
            r["Sem"] = 6;          
        });

Posted 24-Feb-15 18:22pm

Sujith Karivelil

Updated 24-Feb-15 18:24pm

v2

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3 solutions

Solution 2

First make a copy for that data table before update say dt1
after update you will get another table say dt2

Now you can write below code

dt1.Merge(dt2);

DataTable d3 = dt2.GetChanges();

return d3.Rows.Count;

Posted 24-Feb-15 18:55pm

Himanshu Kumarrrr

Solution 3

use below command

System.Data.Linq.ChangeSet changes = db.GetChangeSet();

Posted 24-Feb-15 18:59pm

Abdulnazark

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manchanx · Accepted Answer · 2015-02-24T18:40:00

Solution 1

The List that you're creating "in the middle" of your statement "knows" the number of records. You can simply do it in two steps and get the number of records inbetween:

C#

var rows = dataTable.Select(string.Format("[rollNumber]>'{0}'", 10)).ToList<DataRow>();
int numberOfRecords = rows.Count;
rows.ForEach(r =>
        {
            r["Sem"] = 6;
        });

Posted 24-Feb-15 18:40pm

manchanx

Comments

BillWoodruff 25-Feb-15 0:45am

+5

[no name] 25-Feb-15 0:51am

merci