Insert update in linq c#

Skip to main content. This browser is no longer supported. Download Microsoft Edge More info. Contents Exit focus mode. Is this page helpful? NET 3. Just like insert operation, this delete operation example given above will work for. NET framework 3. To edit data, simply first, we will have to retrieve the objects rows and make changes to them wherever needed. Here is a simple code example below which will change a single row: There is no difference between this and changing multiple row only need to retrieve multiple objects and change them.

Thus, no changes will be reflected to your database. Sometime, while writing comparatively big linq to sql query, you might be interested to see what kind of resultant sql query is actually generated for a specific kind of operations. Here is a simple code snippet that will show how to get the corresponding sql query of a linq to sql operation and print it on console:.

Hope this article will be helpful for you for writing simple linq to sql query thus help doing basic database operations. Add a comment. Active Oldest Votes. Linq2Sql will by design always suck in mass insert scenarios. Improve this answer. TomTom TomTom 1. To add to Tom's answer, here is sample code for bulk insert dotnetcurry. So what does linq to sql do? If you try to insert one after another it forget about them or what?

Evan Nagle Evan Nagle 5, 1 1 gold badge 23 23 silver badges 23 23 bronze badges. Ya thats how I thought it would work. I guess what I am trying to go after is so you don't have to open the connection every single time. Even though it is still doing it one by one it would not have to open and close the db every time. I see. Well it looks like you have a solution then. I updated my answer above to more directly address your question.

Well thats how I verified if it was not working by looking in the database. When I tried to put them all in the datacontext then do the submitchanges nothing would be submited.

I changed it to do it after each record was inserted and it works now just fine. Hence try using below.. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 8 years, 8 months ago. Active 2 years, 5 months ago. Viewed 55k times. WeatherTBL where d. ToString select d. Temp; existingDay. WindSpeed; existingDay.

Pressure; existingDay. Humidity; existingDay. Cloudiness; existingDay. TypeRecip; db. Date; newDay. Temp; newDay. WindSpeed; newDay.