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ASP.NET get cell from DataRow in a datatable?


ASP.NET get cell from DataRow in a datatable?

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ASP.NET get cell from DataRow in a datatable?
Tag : asp.net , By : obijywk
Date : November 26 2020, 01:01 AM


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Handle DataTable.DataRow cell change event


Tag : winforms , By : kbrust
Date : March 29 2020, 07:55 AM
wish help you to fix your issue It looks as though the DataTable.ColumnChanged event will do what you want
http://msdn.microsoft.com/en-us/library/system.data.datatable.columnchanged.aspx

If I'm updating a DataRow, do I lock the entire DataTable or just the DataRow?


Tag : chash , By : lewing
Date : March 29 2020, 07:55 AM
hope this fix your issue Actually, just performing a lock in one place on the DataTable or DataRow doesn't actually do anything. An important aspect to remember in using Monitor locks (which is what a lock block is) is that locking an object doesn't do anything to it; that's one reason that some advocate using dedicated locking objects rather than locking the resource itself, since it forces you to realize that you have to perform the lock (and on the same object) whenever you're dealing with the resource.
That being said, it's a better idea to lock the entire DataTable, as the data storage itself is there (the DataRow objects internally only contain an offset into the DataTable as to where to retrieve the data). Because of this, even if you synchronize access to individual rows, updating two different rows simultaneously will cause you to update the same data storage mechanism in a non-synchronized manner.

Is DataRow thread safe? How to update a single datarow in a datatable using multiple threads? - .net 2.0


Tag : .net , By : Florian D.
Date : March 29 2020, 07:55 AM
hope this fix your issue According to MSDN:

how to update a ADO.NET DataRow in DataTable with another DataRow?


Tag : chash , By : cmhudson
Date : March 29 2020, 07:55 AM
Any of those help Although the question is not quite clear it sounds like you have a group of rows from one table and want to update the equivalent rows in another datatable. If this is the case they you can just use the find method and manually update them as you suggested, or alternatively, add the new rows to another table and merge them (there are all sorts of options for merging two data tables). Merging however will just do the same thing under the hood (i.e. find by primary key and update the columns).
Another way would be to just replace the row and set its status to modified datarow.SetModified()

How to select values from datatable based on another datatable using DataRow list


Tag : chash , By : Kyle
Date : March 29 2020, 07:55 AM
I hope this helps . Yes, you missed to convert List to comma seperated elements string.
Try below code
//Below code will convert List<int> SitNumList = new List<int>(){1, 2, 3, 4} to string "1, 2, 3, 4"
string siteNums = string.Join(", ", SitNumList);
DataTable dtPross = "select SitNum from dbo.Table2 where SitNum in (" + siteNums  + ")";
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