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将数据库表导出为C#实体对象

article 2025/8/15 9:58:13

数据库方式

use 数据库;declare @TableName sysname = '表名'
declare @Result varchar(max) = '
/// <summary>
///  ' +  @TableName +'
/// </summary>
public class ' + @TableName + '
{'select @Result = @Result + '/// <summary>/// ' +  CONVERT(NVARCHAR(500), ISNULL(ColName, '无')) +'/// </summary>public ' + ColumnType + NullableSign + ' ' + ColumnName + ' { get; set; }
'
from
(SELECTreplace(col.name, ' ', '_') ColumnName,column_id ColumnId,prop.value ColName,case typ.namewhen '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.nameend ColumnType,casewhen 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', 'uniqueidentifier')then '?'else ''end NullableSignfrom sys.columns coljoin sys.types typ oncol.system_type_id = typ.system_type_id AND col.user_type_id = typ.user_type_idLEFT JOIN sys.extended_properties prop ON col.object_id = prop.major_id AND col.column_id = prop.minor_idwhere object_id = object_id(@TableName)
) t
--order by ColumnIdset @Result = @Result  + '
}'print @Result

sqlsugar

using SqlSugar;namespace ConsoleApp3
{internal class Program{static void Main(string[] args){var dbName = "数据库名字";SqlSugarClient db = new SqlSugarClient(new ConnectionConfig(){ConnectionString = $"Server=localhost;uid=sa;pwd=123456789;Database={dbName};MultipleActiveResultSets=true;pooling=true;min pool size=5;max pool size=32767;connect timeout=20;Encrypt=True;TrustServerCertificate=True;",DbType = DbType.SqlServer,IsAutoCloseConnection = true,InitKeyType = InitKeyType.Attribute});var path = AppDomain.CurrentDomain.BaseDirectory;db.DbFirst.Where("TableName", "Student").CreateClassFile(path, "Test.Models");Console.WriteLine("生成成功");}}
}