how to update datarow in datatable using LINQ C#?

Question

i want to update datatable (dtTaskandBugs) on some condition.
want to update storyid of all the row in the datatable when the id(which is a column of the Datatable) is passed as paramter to the function GetStoryid. this is my code below it's not working (nothing happening)

  dtTaskandBugs.Select(string.Format("Storyid = '{0}'", dtTaskandBugs.Rows)).ToList<DataRow>().ForEach(
                r =>
                {
                    r["Storyid"] = GetStoryid(r["Id"]);
                });

Answer 1

The error is here:

string.Format("Storyid = '{0}'", dtTaskandBugs.Rows)

You are passing the number of rows in this table as argument to DataTable.Select which filters the rows, so probably doesn't return any rows.

I suggest a simple foreach -loop since you want to update all rows:

foreach(DataRow row in dtTaskandBugs.Rows)
      row ["Storyid"] = GetStoryid(row["Id"]);