Generate C Sharp Model Class from MySQL table

Many time we need to generate model class for RDBMS tables. For this i have written small MySQL stored procedure to generate C# model class for a MySQL table. Any one can generate class by calling this stored procedure with TABLE_NAME parameter.

One can easily modify this script according to his need.

Here is stored procedure script to generate c# code

-- --------------------------------------------------------------------------------
-- Routine DDL
-- Note: comments before and after the routine body will not be stored by the server
-- --------------------------------------------------------------------------------
DELIMITER $$

CREATE DEFINER=`root`@`localhost` PROCEDURE `GenCSharpModel`(in pTableName VARCHAR(255) )
BEGIN
DECLARE vClassName varchar(255);
declare vClassCode mediumtext;
declare v_codeChunk varchar(1024);
DECLARE v_finished INTEGER DEFAULT 0;
DEClARE code_cursor CURSOR FOR 
    SELECT code FROM temp1; 

DECLARE CONTINUE HANDLER 
        FOR NOT FOUND SET v_finished = 1;

set vClassCode =\'\';
/* Make class name*/
    SELECT (CASE WHEN col1 = col2 THEN col1 ELSE concat(col1,col2)  END) into vClassName
    FROM(
    SELECT CONCAT(UCASE(MID(ColumnName1,1,1)),LCASE(MID(ColumnName1,2))) as col1,
    CONCAT(UCASE(MID(ColumnName2,1,1)),LCASE(MID(ColumnName2,2))) as col2
    FROM
    (SELECT SUBSTRING_INDEX(pTableName, \'_\', -1) as ColumnName2,
        SUBSTRING_INDEX(pTableName, \'_\', 1) as ColumnName1) A) B;

    /*store all properties into temp table*/
    CREATE TEMPORARY TABLE IF NOT EXISTS  temp1 ENGINE=MyISAM  
    as (
    select concat( \'public \', ColumnType , \' \' , FieldName,\' { get; set; }\') code
    FROM(
    SELECT (CASE WHEN col1 = col2 THEN col1 ELSE concat(col1,col2)  END) AS FieldName, 
    case DATA_TYPE 
            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 \'mediumint\' then \'INT\'
            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\'
            when \'year\' THEN \'UINT\'
            else \'UNKNOWN_\' + DATA_TYPE
        end ColumnType
    FROM(
    select CONCAT(UCASE(MID(ColumnName1,1,1)),LCASE(MID(ColumnName1,2))) as col1,
    CONCAT(UCASE(MID(ColumnName2,1,1)),LCASE(MID(ColumnName2,2))) as col2, DATA_TYPE
    from
    (SELECT SUBSTRING_INDEX(COLUMN_NAME, \'_\', -1) as ColumnName2,
    SUBSTRING_INDEX(COLUMN_NAME, \'_\', 1) as ColumnName1,
    DATA_TYPE, COLUMN_TYPE FROM INFORMATION_SCHEMA.COLUMNS  WHERE table_name = pTableName) A) B)C);

    set vClassCode = \'\';
    /* concat all properties*/
    OPEN code_cursor;
 
            get_code: LOOP
         
                FETCH code_cursor INTO v_codeChunk;
         
                IF v_finished = 1 THEN 
                    LEAVE get_code;
                END IF;
                
                -- build code
                select  CONCAT(vClassCode,\'rn\', v_codeChunk) into  vClassCode ;
         
            END LOOP get_code;
     
        CLOSE code_cursor;

drop table temp1;
/*make class*/
select concat(\'public class \',vClassName,\'rn{\', vClassCode,\'rn}\');
END

 

Execute above script to create stored procedure. You can add addition data types or modify existing according to your need.

genrate-cshar-model-1

Call this stored to get C# model code, using table as parameter

CALL `dietplandb`.`GenCSharpModel`(\'unit_lookup\');

genrate-cshar-model-2

Here is final output

public class UnitLookup
{
        public int Id { get; set; }
        public string Name { get; set; }
        public DateTime DateModified { get; set; }
        public byte IsDeleted { get; set; }
}

You can modify stored procedure script to modify code generation according to you requirement.