in this article, i will show you, how to generate c# class from sql database table.
create proc usp_createc#classfromsql
@tablename sysname
as
declare @result varchar(max) = 'public class ' + @tablename + '
{'
select @result = @result + 'public ' + columntype + nullablesign + ' ' + columnname + ' { get; set; }'
from
(
select
replace(col.name, ' ', '_') columnname,
column_id columnid,
case typ.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 'double'
when 'image' then 'byte[]'
when 'int' then 'int'
when 'money' then 'decimal'
when 'nchar' then 'string'
when 'ntext' then 'string'
when 'numeric' then 'decimal'
when 'nvarchar' then 'string'
when 'real' then 'float'
when 'smalldatetime' then 'DateTime'
when 'smallint' then 'short'
when 'smallmoney' then 'decimal'
when 'text' then 'string'
when 'time' then 'timespan'
when 'timestamp' then 'long'
when 'tinyint' then 'byte'
when 'uniqueidentifier' then 'guid'
when 'varbinary' then 'byte[]'
when 'varchar' then 'string'
else 'unknown_' + typ.name
end columntype,
case
when col.is_nullable = 1 and typ.name in ('bigint', 'bit', 'date', 'DateTime', 'datetime2', 'datetimeoffset', 'decimal', 'float', 'int', 'money', 'numeric', 'real', 'smalldatetime', 'smallint', 'smallmoney', 'time', 'tinyint', 'uniqueidentifie
r')
then '?'
else ''
end nullablesign
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 by columnid
set @result = @result + '
}'
print @result
create proc usp_createc#classfromsql
@tablename sysname
as
declare @result varchar(max) = 'public class ' + @tablename + '
{'
select @result = @result + 'public ' + columntype + nullablesign + ' ' + columnname + ' { get; set; }'
from
(
select
replace(col.name, ' ', '_') columnname,
column_id columnid,
case typ.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 'double'
when 'image' then 'byte[]'
when 'int' then 'int'
when 'money' then 'decimal'
when 'nchar' then 'string'
when 'ntext' then 'string'
when 'numeric' then 'decimal'
when 'nvarchar' then 'string'
when 'real' then 'float'
when 'smalldatetime' then 'DateTime'
when 'smallint' then 'short'
when 'smallmoney' then 'decimal'
when 'text' then 'string'
when 'time' then 'timespan'
when 'timestamp' then 'long'
when 'tinyint' then 'byte'
when 'uniqueidentifier' then 'guid'
when 'varbinary' then 'byte[]'
when 'varchar' then 'string'
else 'unknown_' + typ.name
end columntype,
case
when col.is_nullable = 1 and typ.name in ('bigint', 'bit', 'date', 'DateTime', 'datetime2', 'datetimeoffset', 'decimal', 'float', 'int', 'money', 'numeric', 'real', 'smalldatetime', 'smallint', 'smallmoney', 'time', 'tinyint', 'uniqueidentifie
r')
then '?'
else ''
end nullablesign
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 by columnid
set @result = @result + '
}'
print @result
2 Comments
Great work
ReplyDeletethanks for comment
ReplyDeleteif you have any doubts , please let me know