DbParameter public abstract class DbParameter Documentation public abstract DbType DbType { get; set; } public abstract ParameterDirection Direction { get; set; } public abstract bool IsNullable { get; set; } public abstract string ParameterName { get; set; } public virtual byte Precision { get; set; } public virtual byte Scale { get; set; } public abstract int Size { get; set; } public abstract string SourceColumn { get; set; } public abstract bool SourceColumnNullMapping { get; set; } public abstract object Value { get; set; } protected DbParameter() public abstract void ResetDbType()