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POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
 

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  1. POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
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    <p>I have two tables:</p> <pre><code>CREATE TABLE `Vehicles` ( `ID` int(10) unsigned NOT NULL AUTO_INCREMENT, ... Other columns PRIMARY KEY (`ID`) ) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1 </code></pre> <p>And:</p> <pre><code>CREATE TABLE `VehicleOptions` ( `ID` int(10) unsigned NOT NULL AUTO_INCREMENT, `VehicleID` int(10) unsigned NOT NULL, ... Other columns PRIMARY KEY (`ID`), KEY `FK_Vehicles_to_VehicleOptions` (`VehicleID`), CONSTRAINT `FK_Vehicles_to_VehicleOptions` FOREIGN KEY (`VehicleID`) REFERENCES `vehicles` (`ID`) ON DELETE CASCADE ON UPDATE NO ACTION ) ENGINE=InnoDB DEFAULT CHARSET=latin1 </code></pre> <p>Here is a picture of the Data Objects:</p> <p><img src="https://i.stack.imgur.com/MMvDt.png" alt="Data Objects"></p> <p>I drag and dropped Vehicle and VehicleOptions onto my form. I then load the databse using a LINQ query:</p> <pre><code>var dataSource = from v in Database.DataContext.Vehicles.Include("VehicleOptions") orderby v.Stock descending select v; // The vehicles BindingSource bsVehicles.DataSource = dataSource; // The vehicleoptions BindingSource bsVehicleOptions.DataSource = bsVehicles; bsVehicleOptions.DataMember = "VehicleOptions"; </code></pre> <p>Whenever I add/edit data on my form I call:</p> <pre><code>bsVehicles.SuspendBinding(); bsVehicleOptions.SuspendBinding(); Database.DataContext.SaveChanges(); bsVehicleOptions.ResumeBinding(); bsVehicles.ResumeBinding(); </code></pre> <p>The changes made to <code>bsVehicles</code> are saved in my MySQL database but the changes made to <code>bsVehicleOptions</code> are not. Even on the form, the Controls bound to <code>bsVehicleOptions</code> empty their data on <code>Database.DataContext.SaveChanges();</code> Am I missing something here?</p> <p>Note: I am using the Entity Framework V4 (I've hear the Associations in older versions were funky?).</p>
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USCris McLaughlin
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
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      1. POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
      1. USCris McLaughlin
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    2. VO
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      1. POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
      1. This table or related slice is empty.
      1. VTUpMod
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      1. USRup
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    1. COCan you try detach and then attach the VehicleOptions into the Vehicles object graph and then call context.SaveChanges()?
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      1. POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
      1. USSiva Gopal
    2. CODetach it from the data context? What if the VehicleOptions don't exist yet (Im adding a new Vehicle for example)?
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      1. POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
      1. USCris McLaughlin
    3. COthe link to the image is borken.
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      1. POEntity Framework Foreign Key Table isn't saving changes made to its BindingSource
      1. USJohn Nicholas
 

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