public void ExecuteSql()
{
using (GalaxyDbContext db = new GalaxyDbContext(new DbContextOptions <GalaxyDbContext>()))
{
//这里仅仅为了测试，具体还是以实际为准
//SqlCommand只返回受影响的行数，所以用在新增，插入，修改，删除行，删除表等操作中
//新增Table
int addResult = db.Database.ExecuteSqlCommand(@"CREATE TABLE dbo.Test (id INT IDENTITY(1,1) PRIMARY KEY, Name VARCHAR(100), Age INT);");
//插入
SqlParameter Name1 = new SqlParameter("@Name", "王明");
SqlParameter Age1 = new SqlParameter("@Age", 19);
string strInsertSql = "INSERT INTO dbo.Test(Name, Age) VALUES(@Name, @Age)";
int insertResult = db.Database.ExecuteSqlCommand(strInsertSql, new SqlParameter[] { Name1, Age1 });
//修改， 使用sqlParameter防止注入攻击
SqlParameter Name2 = new SqlParameter("@Name", "李磊");
SqlParameter Age2 = new SqlParameter("@Age", 18);
string strUpdateSql = "UPDATE dbo.Test SET Name=@Name, Age=@Age";
int updateResult = db.Database.ExecuteSqlCommand(strUpdateSql, new SqlParameter[] { Name2, Age2 });
//删除行
SqlParameter Id1 = new SqlParameter("@Id", 1);
string strDeleteSql = "DELETE FROM dbo.Test WHERE Id=@Id";
int deleteResult = db.Database.ExecuteSqlCommand(strDeleteSql, new SqlParameter[] { Id1 });
//删除Table
string strDropSql = "Drop Table dbo.Test";
int dropResult = db.Database.ExecuteSqlCommand(strDropSql);
//SqlQuery返回查询的结果，所以用在查询操作中, SqlQuery在EFCore中没有，只能用FromSql, FromSql还能执行存储过程
SqlParameter Id2 = new SqlParameter("@Id", 1);
string strSelectSql = "SELECT * FROM dbo.Test WHERE Id=@Id";
var selectResult = db.Set <Message>().FromSql(strSelectSql, new SqlParameter[] { Id2 });
}
}
public TestDataBuilder(GalaxyDbContext context)
{
_context = context;
}