DbColumn.cs

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namespace System.Data.Common;
 
public abstract class DbColumn
{
    public bool? AllowDBNull { get; protected set; }
 
    public string? BaseCatalogName { get; protected set; }
 
    public string? BaseColumnName { get; protected set; }
 
    public string? BaseSchemaName { get; protected set; }
 
    public string? BaseServerName { get; protected set; }
 
    public string? BaseTableName { get; protected set; }
 
    public string ColumnName { get; protected set; } = "";
 
 
    public int? ColumnOrdinal { get; protected set; }
 
    public int? ColumnSize { get; protected set; }
 
    public bool? IsAliased { get; protected set; }
 
    public bool? IsAutoIncrement { get; protected set; }
 
    public bool? IsExpression { get; protected set; }
 
    public bool? IsHidden { get; protected set; }
 
    public bool? IsIdentity { get; protected set; }
 
    public bool? IsKey { get; protected set; }
 
    public bool? IsLong { get; protected set; }
 
    public bool? IsReadOnly { get; protected set; }
 
    public bool? IsUnique { get; protected set; }
 
    public int? NumericPrecision { get; protected set; }
 
    public int? NumericScale { get; protected set; }
 
    public string? UdtAssemblyQualifiedName { get; protected set; }
 
    public Type? DataType { get; protected set; }
 
    public string? DataTypeName { get; protected set; }
 
    public virtual object? this[string property] => property switch
    {
        "AllowDBNull" => AllowDBNull, 
        "BaseCatalogName" => BaseCatalogName, 
        "BaseColumnName" => BaseColumnName, 
        "BaseSchemaName" => BaseSchemaName, 
        "BaseServerName" => BaseServerName, 
        "BaseTableName" => BaseTableName, 
        "ColumnName" => ColumnName, 
        "ColumnOrdinal" => ColumnOrdinal, 
        "ColumnSize" => ColumnSize, 
        "IsAliased" => IsAliased, 
        "IsAutoIncrement" => IsAutoIncrement, 
        "IsExpression" => IsExpression, 
        "IsHidden" => IsHidden, 
        "IsIdentity" => IsIdentity, 
        "IsKey" => IsKey, 
        "IsLong" => IsLong, 
        "IsReadOnly" => IsReadOnly, 
        "IsUnique" => IsUnique, 
        "NumericPrecision" => NumericPrecision, 
        "NumericScale" => NumericScale, 
        "UdtAssemblyQualifiedName" => UdtAssemblyQualifiedName, 
        "DataType" => DataType, 
        "DataTypeName" => DataTypeName, 
        _ => null, 
    };
}