Generate class from SQL database table

Generate class from SQL database table

declare @TableName sysname = 'BANKACCOUNT'

declare @Result varchar(max) = 'public class ' + UPPER(LEFT(@TableName,1))+LOWER(SUBSTRING(@TableName,2,LEN(@TableName)))  + 'Entity

{'

select @Result =@Result + '

    public ' + ColumnType + NullableSign + ' ' + ColumnName + ' { get; set; }

'

from

(

    select

        replace(col.name, ' ', '_') ColumnName,

        column_id ColumnId,

        casetyp.name

            when'bigint' then 'long'

            when'binary' then 'byte[]'

            when'bit' then 'bool'

            when'char' then 'string'

            when'date' then 'DateTime'

            when'datetime' then 'DateTime'

            when'datetime2' then'DateTime'

            when'datetimeoffset' then'DateTimeOffset'

            when'decimal' then 'decimal'

            when'float' then 'float'

            when'image' then 'byte[]'

            when'int' then 'int'

            when'money' then 'decimal'

            when'nchar' then 'char'

            when'ntext' then 'string'

            when'numeric' then 'decimal'

            when'nvarchar' then 'string'

            when'real' then 'double'

            when'smalldatetime' then'DateTime'

            when'smallint' then 'short'

            when'smallmoney' then'decimal'

            when'text' then 'string'

            when'time' then 'TimeSpan'

            when'timestamp' then'DateTime'

            when'tinyint' then 'byte'

            when'uniqueidentifier' then'Guid'

            when'varbinary' then'byte[]'

            when'varchar' then 'string'

            else'UNKNOWN_' + typ.name

        endColumnType,

        case

            whencol.is_nullable =1 and typ.name in ('bigint', 'bit', 'date', 'datetime', 'datetime2', 'datetimeoffset', 'decimal', 'float', 'int', 'money', 'numeric', 'real', 'smalldatetime', 'smallint', 'smallmoney', 'time', 'tinyint', 'uniqueidentifier')

            then'?'

            else''

        endNullableSign

    from sys.columns col

        join sys.types typ on

            col.system_type_id = typ.system_type_id AND col.user_type_id = typ.user_type_id

    where object_id= object_id(@TableName)

) t

order byColumnId

set @Result =@Result  +'

}'

print @Result

public class BankaccountEntity

{

    public int ID { get; set; }

    public string BANK { get; set; }

    public string ROUNTINGNUM { get; set; }

    public string CURRENCY { get; set; }

    public string ACCOUNTNUM { get; set; }

    public int? MAINACCOUNTID { get; set; }

    public string IBAN { get; set; }

    public string SWIFT { get; set; }

    public string BRANCH { get; set; }

    public string CONTACTPERSON { get; set; }

    public string CONTACTPHONE { get; set; }

    public string CONTACTEMAIL { get; set; }

    public bool? STATUS { get; set; }

}