C Sql Server And Entity Framework Don T Save Changes Stack Overflow

C Sql Server And Entity Framework Don T Save Changes Stack Overflow I have the following issue: i created a sql server localdb instance and created a simple table called player. then i added an ado entity framework data model (database to code) and instantiated the poco class player. The database might not preserve your changes if your changes affect a precision level that is not supported by the data type of the database field. a common example for this is the datetime field in ms sql server which has less precision than the datetime object in , check the code below.

C Sql Server And Entity Framework Don T Save Changes Stack Overflow My workflow is, pull all the products from the database into the program, (we use c# and ef core), update the relevant products, and send back the updates to the database. I've got an mvc web application that uses sql server 2008 as a back end database along with the entity framework. the application is working fine and pulling data from the database just fine. my problem is, when it does an update to the data, it doesn't appear to be saving it. i am using the follow function:. Savechangesasync does not save changes made within the context to the database. no error's are noticed. however the changes cannot be seen in the database. i have attached the trace files. steps to reproduce:. My web api code already incorporates the mitigation advised for ef core 8 when working with sql tables that have triggers. the particular error i have having says it cannot cast from system.string data type to system.int64 data type.

C Sql Server And Entity Framework Don T Save Changes Stack Overflow Savechangesasync does not save changes made within the context to the database. no error's are noticed. however the changes cannot be seen in the database. i have attached the trace files. steps to reproduce:. My web api code already incorporates the mitigation advised for ef core 8 when working with sql tables that have triggers. the particular error i have having says it cannot cast from system.string data type to system.int64 data type. So what's the solution to this? instead of db.addtopeople (), try db.people.add (). also, wrap a using statement around the db variable to make sure the context and connection get disposed correctly. this is for ef4 and 4.0. assuming you have a list called people setup. hope this helps! 🙂 here is the code: person roger = new person() . Trying to implement entity framework for an existing database (sql server 2012). i have a vb application running and trying to convert it to the ef based web api. when i insert data into the table inboundequipment where inboundequipmentid is an identity column. Just edit the properties in your entitites and save them. if you cannot do this as part of the changes you save, you can just do an extra operation and save it. you could also look into using interceptors in ef. Ef core will cache all entities in the change tracker by default. it doesn't have a two way connection with the database so the cache can become stale if you have other processes touching the data outside of your context.

C Entity Framework Save Changes Issue Stack Overflow So what's the solution to this? instead of db.addtopeople (), try db.people.add (). also, wrap a using statement around the db variable to make sure the context and connection get disposed correctly. this is for ef4 and 4.0. assuming you have a list called people setup. hope this helps! 🙂 here is the code: person roger = new person() . Trying to implement entity framework for an existing database (sql server 2012). i have a vb application running and trying to convert it to the ef based web api. when i insert data into the table inboundequipment where inboundequipmentid is an identity column. Just edit the properties in your entitites and save them. if you cannot do this as part of the changes you save, you can just do an extra operation and save it. you could also look into using interceptors in ef. Ef core will cache all entities in the change tracker by default. it doesn't have a two way connection with the database so the cache can become stale if you have other processes touching the data outside of your context.