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| Guest | Using the ObjectDataProvider always throws an exception... The following code in C# always throws an exception at the 3rd Line.....+ $exception {"ObjectDataProvider can only be assigned an ObjectType or an ObjectInstance, not both."} System.Exception {System.InvalidOperationException} ============================================================================== LoginScreenDataSource mLoginScreen = new LoginScreenDataSource(); ObjectDataProvider LoginProvider = (ObjectDataProvider)FindResource("ods_LoginScreenDataSource"); LoginProvider.ObjectInstance = new LoginScreenDataSource(); =============================================================================== LoginScreenDataSource is a Class object ods_LoginScreenDataSource is in the XAML file defined as <Window.Resources> <ObjectDataProvider x:Key="ods_LoginScreenDataSource" ObjectType="{x:Type ds:LoginScreenDataSource}"/> Any ideas ??? Cheers Desmond. |
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| Guest | Re: Using the ObjectDataProvider always throws an exception... On Jun 19, 5:55 pm, "Desmond Cassidy" <Desmond.PA.Cass...@T-Online.de> wrote: > The following code in C# always throws an exception at the 3rd Line.....+ > $exception {"ObjectDataProvider can only be assigned an ObjectType or an > ObjectInstance, not both."} System.Exception > {System.InvalidOperationException} > ============================================================================== > > LoginScreenDataSource mLoginScreen = new LoginScreenDataSource(); > ObjectDataProvider LoginProvider = > (ObjectDataProvider)FindResource("ods_LoginScreenDataSource"); > LoginProvider.ObjectInstance = new LoginScreenDataSource(); > =============================================================================== > LoginScreenDataSource is a Class object > ods_LoginScreenDataSource is in the XAML file defined as > <Window.Resources> > <ObjectDataProvider x:Key="ods_LoginScreenDataSource" ObjectType="{x:Type > ds:LoginScreenDataSource}"/> > > Any ideas ??? > Cheers Desmond. As specified by the error message, you cannot specify BOTH the ObjectType and the ObjectInstance... ObjectType indicates to the ObjectDataProvider what type of object to instantiate (if no object instance is supplied). ObjectInstance is there to allow you to feed an object instance to the ObjectDataProvider, so it does not have to create its own... Cheers, Marcus. |
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