我需要从 .Net Core 项目中的数据库获取存储过程。通常我通过这样做来运行这个存储过程:
首选代码
readonly private SqlConnection _dbConnection = new SqlConnection(ConfigurationManager.ConnectionStrings["DbConnection"].ConnectionString);
public int Insert(Employee employee)
{
var result = 0;
using (var cmd = new SqlCommand("Sp_Insert", _dbConnection) { CommandType = CommandType.StoredProcedure })
{
try
{
cmd.Parameters.AddWithValue("@FirstName", employee.FirstName);
cmd.Parameters.AddWithValue("@LastName", employee.LastName);
cmd.Parameters.AddWithValue("@EmployeeCode", employee.EmployeeCode);
cmd.Parameters.AddWithValue("@Position", employee.Position);
cmd.Parameters.AddWithValue("@Office", employee.Office);
_dbConnection.Open();
result = cmd.ExecuteNonQuery();
}
catch
{
// ignore
}
finally
{
_dbConnection.Close();
}
}
return result;
}
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我的连接字符串位于 Web.config 中,但对于 .net Core,我的连接字符串位于 appsettings.json 中,如下所示:
.Net 实体框架代码
{
"ConnectionStrings": {
"Default": "server=DESKTOP-98TG6JE\\SERVER_2014;database=vega;user=sa;password=ComplexPassword!123;"
},
"Logging": {
"LogLevel": {
"Default": "Warning"
}
}
}
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然后我创建一个 DbContext,如下所示:
public class VegaDbContext : DbContext
{
public VegaDbContext(DbContextOptions<VegaDbContext> options) : base(options)
{}
public DbSet<Make> Makes { get; set; }
}
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然后在我的 Startup.cs 中调用它,如下所示:
public Startup(IConfiguration configuration)
{
Configuration = configuration;
}
public IConfiguration Configuration { get; }
// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
services.AddDbContext<VegaDbContext>(options => options.UseSqlServer(Configuration.GetConnectionString("Default")));
services.AddMvc();
}
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如果我使用实体框架进行 CRUD,这很好,但是,我多次需要创建复杂的查询,因此我需要 SQL 存储过程。您能告诉我如何将我的“首选代码”与“.net 实体框架代码”集成吗?非常感谢。
PS如果可能的话,您可以使用我上面的代码作为示例吗?
进行以下更改:
在您的ConfigureServices方法中添加以下行:
services.AddSingleton<IConfiguration>(Configuration);
在class otherwith中InsertEmployee,添加IConfiguration构造函数参数,调用它configuration并将其设置为私有字段。
看起来应该是这样InsertEmployee的:
public int InsertEmployee(Employee employee)
{
var sql = new SqlConnection(
this.configuration.GetConnectionString("Default"));
//... rest of your ADO code.
}
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