Class Property Not be included as sqlite database column in C#

Class Property Not be included as sqlite database column in C#

In C#, when using SQLite as a database, you can exclude a property of a class from being mapped to a database column by using the [SQLite.Ignore] attribute.

Here's an example of how to use the [SQLite.Ignore] attribute:

public class MyClass { [SQLite.Ignore] public string IgnoredProperty { get; set; } public string MappedProperty { get; set; } }

In this example, we have a class called MyClass with two properties: IgnoredProperty and MappedProperty. The [SQLite.Ignore] attribute is used on the IgnoredProperty property to indicate that it should not be included as a column in the database table.

When creating the SQLite table for the MyClass object, the IgnoredProperty will not be included as a column in the table. Only the MappedProperty property will be included.

Note that the [SQLite.Ignore] attribute can also be used on class level to ignore the entire class during mapping to a database table. In this case, all properties of the class will be ignored and not mapped to database columns.

Examples

  1. "SQLite Database Column Missing for Class Property C#"

    • Description: Investigating why a specific property in a class is not being included as a column in an SQLite database.
    • Code:
      public class Example { public int IncludedProperty { get; set; } // MissingProperty is not being included in the database public int MissingProperty { get; set; } }

  2. "Explicitly Specifying SQLite Database Columns in C#"

    • Description: Demonstrating how to explicitly specify database columns in SQLite using attributes.
    • Code:
      public class Example { [Column("IncludedColumn")] public int IncludedProperty { get; set; } // MissingProperty will not be included in the database public int MissingProperty { get; set; } }

  3. "SQLite Auto-Mapping Properties in C#"

    • Description: Explaining the automatic property mapping in SQLite and how to control it.
    • Code:
      [Table("ExampleTable")] public class Example { // SQLite will include all public properties as columns public int IncludedProperty { get; set; } public int MissingProperty { get; set; } }

  4. "SQLite Database Not Reflecting Changes in C#"

    • Description: Investigating why changes in class properties are not reflected in the SQLite database.
    • Code:
      public class Example { public int InitialProperty { get; set; } // UpdatedProperty is not being reflected in the database public int UpdatedProperty { get; set; } }

  5. "SQLite Database Schema Mismatch with C# Class"

    • Description: Handling scenarios where the SQLite database schema does not match the C# class.
    • Code:
      public class Example { [Column("Name")] // Mismatched column name public string UserName { get; set; } }

  6. "SQLite Data Annotations in C#"

    • Description: Using data annotations to control how properties are mapped to SQLite database columns.
    • Code:
      public class Example { [Column("CustomColumnName")] public int IncludedProperty { get; set; } public int MissingProperty { get; set; } }

  7. "SQLite Database Column Types in C#"

    • Description: Understanding how to specify SQLite column types for C# properties.
    • Code:
      public class Example { [Column("Value", TypeName = "TEXT")] public string IncludedProperty { get; set; } public int MissingProperty { get; set; } }

  8. "SQLite Table Creation Script for C# Class"

    • Description: Generating an SQLite table creation script based on the C# class properties.
    • Code:
      var tableCreationScript = SQLite.TableCreationScript<Example>(); // Output the script or execute it to create the table

More Tags

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