如何从SQL Server表对象生成类?
我说的不是使用ORM。我只需要创建实体(简单类)。喜欢的东西:
public class Person
{
public string Name { get;set; }
public string Phone { get;set; }
}
给定一个表，比如:
+----+-------+----------------+
| ID | Name | Phone |
+----+-------+----------------+
| 1 | Alice | (555) 555-5550 |
| 2 | Bob | (555) 555-5551 |
| 3 | Cathy | (555) 555-5552 |
+----+-------+----------------+
当前回答
之前的解决方案的一个小补充: object_id(@TableName)仅在默认模式中有效。
(Select id from sysobjects where name = @TableName)
只要@tableName是唯一的，就可以在任何模式中工作。
其他回答
之前的解决方案的一个小补充: object_id(@TableName)仅在默认模式中有效。
(Select id from sysobjects where name = @TableName)
只要@tableName是唯一的，就可以在任何模式中工作。
是的，这些是伟大的，如果你使用一个简单的ORM像Dapper。
如果你使用。net，你可以在运行时使用WriteXmlSchema方法用任何数据集生成XSD文件。http://msdn.microsoft.com/en-us/library/xt7k72x8 (v = vs.110) . aspx
是这样的:
using (SqlConnection cnn = new SqlConnection(mConnStr)) {
DataSet Data = new DataSet();
cnn.Open();
string sql = "SELECT * FROM Person";
using (SqlDataAdapter Da = new SqlDataAdapter(sql, cnn))
{
try
{
Da.Fill(Data);
Da.TableMappings.Add("Table", "Person");
Data.WriteXmlSchema(@"C:\Person.xsd");
}
catch (Exception ex)
{ MessageBox.Show(ex.Message); }
}
cnn.Close();
从那里，您可以使用xsd.exe创建一个可从开发人员命令提示符序列化XML的类。 http://msdn.microsoft.com/en-us/library/x6c1kb0s (v = vs.110) . aspx
是这样的:
xsd C:\Person.xsd /classes /language:CS
Visual Studio杂志发表了这篇文章:
为SQL查询结果生成。net POCO类
它有一个可下载的项目，你可以构建，给它你的SQL信息，它会为你制作出类。
现在，如果该工具刚刚为SELECT、INSERT和UPDATE创建了SQL命令....
Oracle DB的另一个解决方案-> c#
单查询 无功能无步骤 Mulitple表
添加DataAnnotations
(例子) (需要) (表) (StringLength) (列) 可以为空
查询
https://gist.github.com/omansak/f19eefffd2d639ac72a1f4b506d8471a
输出
[Table("AGENTS")]
public class Agents
{
[Key]
[Required]
[Column("INT_ID", TypeName = "NUMBER(10,0)", Order = 1)]
public long IntId { get; set; }
[Key]
[Required]
[StringLength(15)]
[Column("REFERENCE_CODE", TypeName = "VARCHAR2(15)", Order = 2)]
public string ReferenceCode { get; set; }
[Required]
[Column("PARENT_INT_ID", TypeName = "NUMBER(10,0)", Order = 3)]
public long ParentIntId { get; set; }
[Required]
[StringLength(200)]
[Column("TITLE", TypeName = "VARCHAR2(200)", Order = 4)]
public string Title { get; set; }
[Required]
[Column("START_DATE", TypeName = "DATE", Order = 5)]
public DateTime StartDate { get; set; }
[Required]
[Column("END_DATE", TypeName = "DATE", Order = 6)]
public DateTime EndDate { get; set; }
[Required]
[StringLength(1)]
[Column("AGENT_TYPE", TypeName = "VARCHAR2(1)", Order = 7)]
public string AgentType { get; set; }
[Required]
[Column("CREATE_DATE", TypeName = "DATE", Order = 8)]
public DateTime CreateDate { get; set; }
[Required]
[StringLength(32)]
[Column("CREATE_USER", TypeName = "VARCHAR2(32)", Order = 9)]
public string CreateUser { get; set; }
[StringLength(200)]
[Column("RESPONSIBLE_CONTACT", TypeName = "VARCHAR2(200)", Order = 10)]
public string ResponsibleContact { get; set; }
[StringLength(100)]
[Column("RESPONSIBLE_TITLE", TypeName = "VARCHAR2(100)", Order = 11)]
public string ResponsibleTitle { get; set; }
[StringLength(100)]
[Column("AGENCY_PLATE_NO", TypeName = "VARCHAR2(100)", Order = 12)]
public string AgencyPlateNo { get; set; }
[Column("AGENCY_COVER_AMOUNT", TypeName = "NUMBER(24,2)", Order = 13)]
public double? AgencyCoverAmount { get; set; }
[StringLength(100)]
[Column("MERSIS_NO", TypeName = "VARCHAR2(100)", Order = 14)]
public string MersisNo { get; set; }
[StringLength(100)]
[Column("TECH_PERSONEL_NO", TypeName = "VARCHAR2(100)", Order = 15)]
public string TechPersonelNo { get; set; }
[StringLength(100)]
[Column("TECH_PERSONEL_NAME", TypeName = "VARCHAR2(100)", Order = 16)]
public string TechPersonelName { get; set; }
[Column("COVER_END_DATE", TypeName = "DATE", Order = 17)]
public DateTime? CoverEndDate { get; set; }
[Column("BRANCH_NUMBER", TypeName = "NUMBER(10,0)", Order = 18)]
public long? BranchNumber { get; set; }
[Column("ACTION_NUMBER", TypeName = "NUMBER(10,0)", Order = 19)]
public long? ActionNumber { get; set; }
[Column("CLUB_PARTICIPATION_COUNT", TypeName = "NUMBER(10,0)", Order = 20)]
public long? ClubParticipationCount { get; set; }
[Column("AGENCY_CONTRACT_DATE", TypeName = "DATE", Order = 21)]
public DateTime? AgencyContractDate { get; set; }
[StringLength(200)]
[Column("KEP_ADDRESS", TypeName = "VARCHAR2(200)", Order = 22)]
public string KepAddress { get; set; }
}
因为之前没有人提到它，所以还有Scaffold-DbContext
在NuGet Package Manager控制台类型如下: Microsoft.EntityFrameworkCore.SqlServer -OutputDir "输出目录"
