ASP.NET MVC 一次发布两个操作以将多个条目写入两个表
ASP.NET MVC Posting two Actions at once to write multiple entries into two tables
我正在使用数据库在 ASP.NET MVC 中构建程序。可以这么说，它用于您厨房中的食谱和配料匹配。它从数据库 table 中提取食谱，并从另一个数据库 table 中提取配料，通过连接点 table 相关联。
RecipeTable
ID PK int not null
RecipeName varchar(25) not null
CategoryID int FK(references Cateogory(ID) not null
Directions varchar(max) not null
和
Recipe_IngredientsTable
RecipeID int FK(references Recipe(ID) not null
IngredientID int FK(references Ingredient(ID) not null (Ingredient table is just IDs and names)
IngredientAmount varchar(25) not null
唯一约束设置为 RecipeID 和 IngredientID。
现在，我遇到的问题是创建新食谱，我想继续并同时保存 RecipeIngredients 列表。 RecipeDM 包含一个 ID 字段、RecipeName、CategoryID、一个列表和一个字段 Directions。现在，在我的 DAL 级别，我有这种编写食谱的方法：
public void CreateRecipeIngredients(RecipeDM recipe)
{
using (SqlConnection connection = new SqlConnection(ConnectionString))
{
// Building single SQL query statement to reduce trips to database for multiple RecipeIngredients
StringBuilder queryString = new StringBuilder();
int rowsAffected = 0;
foreach (RecipeIngredientDM ingredient in recipe.RecipeIngredients)
{
queryString.AppendFormat("Insert into Recipe_Ingredients (RecipeID, IngredientID, IngredientAmount) Values ({0}, {1}, {2});",
recipe.RecipeID,
ingredient.IngredientID,
ingredient.IngredientAmount);
}
try
{
using (SqlCommand command = new SqlCommand(queryString.ToString(), connection))
{
command.CommandType = CommandType.Text;
rowsAffected = command.ExecuteNonQuery();
}
logger.LogError("Event", "User was able create a list of ingredients for a recipe.", "Class: RecipeIngredientDAO -- Method: CreateRecipeIngredients");
}
catch (Exception e)
{
logger.LogError("Error", "User was unable to create a list of ingredients for a recipe, error: " + e, "Class: RecipeIngredientDAO -- Method: CreateRecipeIngredients");
}
finally
{
if (rowsAffected != recipe.RecipeIngredients.Count())
{
recipeData.DeleteRecipe(recipe);
}
logger.LogError("Error", "All RecipeIngredients did not make it into the table; rolling back recipe creation.", "Class: RecipeIngredientDAO -- Method: CreateRecipeIngredients");
// If the number of RecipeIngredients inserted into the table does not equal the number of ingredients the recipe has, then roll back entire creation of recipe to prevent bad data
}
}
}
还有这种写菜谱的方法：
public void CreateRecipe(RecipeDM recipe)
{
try
{
SqlParameter[] parameters = new SqlParameter[]
{
new SqlParameter("@RecipeName", recipe.RecipeName)
,new SqlParameter("@CategoryID", recipe.CategoryID)
,new SqlParameter("@Directions", recipe.Directions)
};
dataWriter.Write(parameters, "CreateRecipe");
logger.LogError("Event", "User was able to create a recipe to the database", "Class: RecipeDAO -- Method: CreateRecipe");
}
catch (Exception e)
{
logger.LogError("Error", "User was unable to create a recipe to the database, error: " + e, "Class: RecipeDAO -- Method: CreateRecipe");
}
}
模型 - CreateRecipeVM
public class CreateRecipeVM
{
public int RecipeID { get; set; }
[Required]
[Display(Name = "Recipe Name")]
[StringLength(25, ErrorMessage = "Please enter a recipe name at least {2} and no more than {1} characters long.", MinimumLength = 3)]
public string RecipeName { get; set; }
[Required]
[Display(Name = "Categories")]
public List<CategorySM> Categories { get; set; }
public int CategoryID { get; set; }
[Required]
[Display(Name = "Ingredients")]
public List<RecipeIngredientVM> Ingredients { get; set; }
[Required]
[Display(Name = "Directions")]
public string Directions { get; set; }
}
型号 - RecipeIngredientVM
public class RecipeIngredientVM
{
public int RecipeID { get; set; }
public int IngredientID { get; set; }
[Required]
[Display(Name = "Ingredient Name")]
public string IngredientName { get; set; }
[Required]
[Display(Name = "Quantity")]
public string IngredientAmount { get; set; }
}
现在，我几乎确定我已经正确编写了 CreateRecipeIngredients 方法，但我不确定。我知道这有点啰嗦 post，但我保证，一旦我奠定了基础，我会解释我的问题是什么。
在我的食谱控制器上，我有创建食谱：
// GET: Recipe/Create
public ActionResult Create()
{
CreateRecipeVM recipe = new CreateRecipeVM();
recipe.Categories = catLog.GetAllCategories();
recipe.Ingredients = Mapper.Map<List<RecipeIngredientVM>>(ingLog.GetAllIngredients());
return View(recipe);
}
// POST: Recipe/Create
[HttpPost]
public ActionResult Create(CreateRecipeVM recipe, List<RecipeIngredientVM> ingredients)
{
try
{
TempData["NewRecipeID"] = recipe.RecipeID;
recipe.Ingredients = (List<RecipeIngredientVM>)TempData.Peek("NewRecipeIngredients");
recLog.CreateRecipe(Mapper.Map<RecipeSM>(recipe));
recIngLog.CreateRecipeIngredients(Mapper.Map<RecipeSM>(recipe));
return RedirectToAction("Details", new { id = recipe.RecipeID }); ;
}
catch
{
return View();
}
}
我的菜谱创建视图如下：
@model MyKitchen.Models.CreateRecipeVM
@{
ViewBag.Title = "Create";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h3>Add a New Recipe</h3>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
@Html.HiddenFor(model => model.RecipeID)
<div class="form-group">
@Html.LabelFor(model => model.RecipeName, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.RecipeName, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.RecipeName, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Categories, htmlAttributes: new { @class = "control-label col-md-2"})
<div class="col-md-10">
@Html.DropDownList("CategoryID", new SelectList(Model.Categories, "CategoryID", "CategoryName"), "--- Select A Category ---")
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Directions, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Directions, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Directions, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Ingredients, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
<button type="button" name="AddIngredients" id="showPartial" class="btn btn-default">Click here to add ingredients for this recipe</button>
<div id="partialView"></div>
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
当您单击名为 "AddIngredients" 且 ID 为 "showPartial" 的按钮时，它会在其正下方分别名为 Div 的 PartialView 中呈现。我的 jquery 工作正常，经过数小时的尝试（我有没有提到我是新手？）。
现在，在我的 RecipeController 中，我有以下方法，它位于该部分视图中：
// GET Recipe/CreateIngredientsForRecipe
public ActionResult CreateIngredientsForRecipe()
{
List<RecipeIngredientVM> ingredients = Mapper.Map<List<RecipeIngredientVM>>(ingLog.GetAllIngredients());
return View(ingredients);
}
// POST Recipe/CreateIngredientsForRecipe
[HttpPost]
public ActionResult CreateIngredientsForRecipe(List<RecipeIngredientVM> ingredients)
{
List<RecipeIngredientVM> recIngredients = new List<RecipeIngredientVM>();
foreach(RecipeIngredientVM food in ingredients)
{
RecipeIngredientVM recFood = new RecipeIngredientVM();
if(food.IngredientAmount != null)
{
recFood.RecipeID = (int)TempData.Peek("NewRecipeID");
recFood.IngredientID = food.IngredientID;
recFood.IngredientName = food.IngredientName;
recFood.IngredientAmount = food.IngredientAmount;
recIngredients.Add(recFood);
}
}
TempData["NewRecipeIngredients"] = recIngredients;
return RedirectToAction("Details", new { id = recIngredients[0].RecipeID }); ;
}
}
}
部分渲染正确，CreateIngredientsForRecipe.cshtml 是：
<table class="table">
<tr>
<th>
@Html.DisplayNameFor(model => model.IngredientName)
</th>
<th>
@Html.DisplayName("Is it in your kitchen?")
</th>
<th></th>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.DisplayFor(modelItem => item.IngredientName)
</td>
<td>
@Html.EditorFor(modelItem => item.IngredientAmount)
</td>
</tr>
}
<tr>
<td>@Html.ActionLink("Don't see the ingredients you need? Click here to add them to the ingredient database!", "Create", "Ingredient")</td>
</tr>
现在，我的问题。当我单击页面底部的“创建”按钮时，我希望它触发 CreateRecipe 以及 CreateRecipeIngredients 的操作和方法。我不确定该怎么做，但我已经写了到目前为止的内容，这就是我的代码中当前的内容。我不记得我都试过了，但现在，它向我反击的例外是
User was unable to create a list of ingredients for a recipe, error: System.InvalidOperationException: ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.
at System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at DAL.RecipeIngredientDAO.CreateRecipeIngredients(RecipeDM recipe) in C:\Users\Sabba\Documents\Visual Studio 2015\Projects\MyKitchen\DAL\RecipeIngredientDAO.cs:line 73
在过去的两天里，我花了将近整整 20 个小时试图让这个东西工作，但无济于事。除了这一件事，我几乎完成了整个项目的其余部分，这让我非常疯狂。
有人可以指出我的写作方向，使它按照我想要的方式工作，或者至少按照它需要的方式工作吗？
根据错误，请打开连接。
使用（SqlConnection 连接 = 新的 SqlConnection（ConnectionString））
{
connection.open();
...
}
public class Address
{
public int? AddressID { get; set; }
public string City { get; set; }
}
public class Account
{
public int? AccountID { get; set; }
public string Name { get; set; }
public List<Address> Addresses { get; set; }
}
public class AccountRepository
{
public void Save(Account newAccount)
{
using (var conn = new SqlConnection())
{
conn.Open();
var tran = conn.BeginTransaction();
try
{
//add account
var cmd = new SqlCommand();
cmd.Connection = conn;
cmd.Transaction = tran;
cmd.CommandType = CommandType.Text;
cmd.CommandText = @"
INSERT INTO Accounts
VALUEs (@p_account_name);
SET @p_account_ID = scope_identity();
";
//param to get account ID
var accountID = new SqlParameter("p_account_id", typeof(int));
accountID.Direction = ParameterDirection.Output;
cmd.Parameters.Add(accountID);
cmd.Parameters.AddWithValue("p_account_name", newAccount.Name);
cmd.ExecuteNonQuery();
newAccount.AccountID = (int)accountID.Value;
if (newAccount.Addresses.Count > 0)
{
//add address
foreach (var address in newAccount.Addresses)
{
cmd = new SqlCommand();
cmd.Connection = conn;
cmd.Transaction = tran;
cmd.CommandType = CommandType.Text;
cmd.CommandText = @"
INSERT INTO Address (account_id, city)
VALUEs (@p_account_id, @p_city);
SET @p_address_ID = scope_identity();
";
//param to get address ID
var addressID = new SqlParameter("p_address_id", typeof(int));
addressID.Direction = ParameterDirection.Output;
cmd.Parameters.Add(addressID);
cmd.Parameters.AddWithValue("p_account_id", newAccount.AccountID);
cmd.Parameters.AddWithValue("p_city", address.City);
cmd.ExecuteNonQuery();
address.AddressID = (int)addressID.Value;
}
}
//commit transaction
tran.Commit();
}
catch (Exception ex)
{
tran.Rollback();
throw;
}
}
}
}
我没有测试代码，但你明白了。只需创建一个新的控制台应用程序并对其进行测试。
我正在使用数据库在 ASP.NET MVC 中构建程序。可以这么说，它用于您厨房中的食谱和配料匹配。它从数据库 table 中提取食谱，并从另一个数据库 table 中提取配料，通过连接点 table 相关联。
RecipeTable
ID PK int not null
RecipeName varchar(25) not null
CategoryID int FK(references Cateogory(ID) not null
Directions varchar(max) not null
和
Recipe_IngredientsTable
RecipeID int FK(references Recipe(ID) not null
IngredientID int FK(references Ingredient(ID) not null (Ingredient table is just IDs and names)
IngredientAmount varchar(25) not null
唯一约束设置为 RecipeID 和 IngredientID。
现在，我遇到的问题是创建新食谱，我想继续并同时保存 RecipeIngredients 列表。 RecipeDM 包含一个 ID 字段、RecipeName、CategoryID、一个列表和一个字段 Directions。现在，在我的 DAL 级别，我有这种编写食谱的方法：
public void CreateRecipeIngredients(RecipeDM recipe)
{
using (SqlConnection connection = new SqlConnection(ConnectionString))
{
// Building single SQL query statement to reduce trips to database for multiple RecipeIngredients
StringBuilder queryString = new StringBuilder();
int rowsAffected = 0;
foreach (RecipeIngredientDM ingredient in recipe.RecipeIngredients)
{
queryString.AppendFormat("Insert into Recipe_Ingredients (RecipeID, IngredientID, IngredientAmount) Values ({0}, {1}, {2});",
recipe.RecipeID,
ingredient.IngredientID,
ingredient.IngredientAmount);
}
try
{
using (SqlCommand command = new SqlCommand(queryString.ToString(), connection))
{
command.CommandType = CommandType.Text;
rowsAffected = command.ExecuteNonQuery();
}
logger.LogError("Event", "User was able create a list of ingredients for a recipe.", "Class: RecipeIngredientDAO -- Method: CreateRecipeIngredients");
}
catch (Exception e)
{
logger.LogError("Error", "User was unable to create a list of ingredients for a recipe, error: " + e, "Class: RecipeIngredientDAO -- Method: CreateRecipeIngredients");
}
finally
{
if (rowsAffected != recipe.RecipeIngredients.Count())
{
recipeData.DeleteRecipe(recipe);
}
logger.LogError("Error", "All RecipeIngredients did not make it into the table; rolling back recipe creation.", "Class: RecipeIngredientDAO -- Method: CreateRecipeIngredients");
// If the number of RecipeIngredients inserted into the table does not equal the number of ingredients the recipe has, then roll back entire creation of recipe to prevent bad data
}
}
}
还有这种写菜谱的方法：
public void CreateRecipe(RecipeDM recipe)
{
try
{
SqlParameter[] parameters = new SqlParameter[]
{
new SqlParameter("@RecipeName", recipe.RecipeName)
,new SqlParameter("@CategoryID", recipe.CategoryID)
,new SqlParameter("@Directions", recipe.Directions)
};
dataWriter.Write(parameters, "CreateRecipe");
logger.LogError("Event", "User was able to create a recipe to the database", "Class: RecipeDAO -- Method: CreateRecipe");
}
catch (Exception e)
{
logger.LogError("Error", "User was unable to create a recipe to the database, error: " + e, "Class: RecipeDAO -- Method: CreateRecipe");
}
}
模型 - CreateRecipeVM
public class CreateRecipeVM
{
public int RecipeID { get; set; }
[Required]
[Display(Name = "Recipe Name")]
[StringLength(25, ErrorMessage = "Please enter a recipe name at least {2} and no more than {1} characters long.", MinimumLength = 3)]
public string RecipeName { get; set; }
[Required]
[Display(Name = "Categories")]
public List<CategorySM> Categories { get; set; }
public int CategoryID { get; set; }
[Required]
[Display(Name = "Ingredients")]
public List<RecipeIngredientVM> Ingredients { get; set; }
[Required]
[Display(Name = "Directions")]
public string Directions { get; set; }
}
型号 - RecipeIngredientVM
public class RecipeIngredientVM
{
public int RecipeID { get; set; }
public int IngredientID { get; set; }
[Required]
[Display(Name = "Ingredient Name")]
public string IngredientName { get; set; }
[Required]
[Display(Name = "Quantity")]
public string IngredientAmount { get; set; }
}
现在，我几乎确定我已经正确编写了 CreateRecipeIngredients 方法，但我不确定。我知道这有点啰嗦 post，但我保证，一旦我奠定了基础，我会解释我的问题是什么。
在我的食谱控制器上，我有创建食谱：
// GET: Recipe/Create
public ActionResult Create()
{
CreateRecipeVM recipe = new CreateRecipeVM();
recipe.Categories = catLog.GetAllCategories();
recipe.Ingredients = Mapper.Map<List<RecipeIngredientVM>>(ingLog.GetAllIngredients());
return View(recipe);
}
// POST: Recipe/Create
[HttpPost]
public ActionResult Create(CreateRecipeVM recipe, List<RecipeIngredientVM> ingredients)
{
try
{
TempData["NewRecipeID"] = recipe.RecipeID;
recipe.Ingredients = (List<RecipeIngredientVM>)TempData.Peek("NewRecipeIngredients");
recLog.CreateRecipe(Mapper.Map<RecipeSM>(recipe));
recIngLog.CreateRecipeIngredients(Mapper.Map<RecipeSM>(recipe));
return RedirectToAction("Details", new { id = recipe.RecipeID }); ;
}
catch
{
return View();
}
}
我的菜谱创建视图如下：
@model MyKitchen.Models.CreateRecipeVM
@{
ViewBag.Title = "Create";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h3>Add a New Recipe</h3>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
<hr />
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
@Html.HiddenFor(model => model.RecipeID)
<div class="form-group">
@Html.LabelFor(model => model.RecipeName, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.RecipeName, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.RecipeName, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Categories, htmlAttributes: new { @class = "control-label col-md-2"})
<div class="col-md-10">
@Html.DropDownList("CategoryID", new SelectList(Model.Categories, "CategoryID", "CategoryName"), "--- Select A Category ---")
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Directions, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
@Html.EditorFor(model => model.Directions, new { htmlAttributes = new { @class = "form-control" } })
@Html.ValidationMessageFor(model => model.Directions, "", new { @class = "text-danger" })
</div>
</div>
<div class="form-group">
@Html.LabelFor(model => model.Ingredients, htmlAttributes: new { @class = "control-label col-md-2" })
<div class="col-md-10">
<button type="button" name="AddIngredients" id="showPartial" class="btn btn-default">Click here to add ingredients for this recipe</button>
<div id="partialView"></div>
</div>
</div>
<div class="form-group">
<div class="col-md-offset-2 col-md-10">
<input type="submit" value="Create" class="btn btn-default" />
</div>
</div>
</div>
}
当您单击名为 "AddIngredients" 且 ID 为 "showPartial" 的按钮时，它会在其正下方分别名为 Div 的 PartialView 中呈现。我的 jquery 工作正常，经过数小时的尝试（我有没有提到我是新手？）。
现在，在我的 RecipeController 中，我有以下方法，它位于该部分视图中：
// GET Recipe/CreateIngredientsForRecipe
public ActionResult CreateIngredientsForRecipe()
{
List<RecipeIngredientVM> ingredients = Mapper.Map<List<RecipeIngredientVM>>(ingLog.GetAllIngredients());
return View(ingredients);
}
// POST Recipe/CreateIngredientsForRecipe
[HttpPost]
public ActionResult CreateIngredientsForRecipe(List<RecipeIngredientVM> ingredients)
{
List<RecipeIngredientVM> recIngredients = new List<RecipeIngredientVM>();
foreach(RecipeIngredientVM food in ingredients)
{
RecipeIngredientVM recFood = new RecipeIngredientVM();
if(food.IngredientAmount != null)
{
recFood.RecipeID = (int)TempData.Peek("NewRecipeID");
recFood.IngredientID = food.IngredientID;
recFood.IngredientName = food.IngredientName;
recFood.IngredientAmount = food.IngredientAmount;
recIngredients.Add(recFood);
}
}
TempData["NewRecipeIngredients"] = recIngredients;
return RedirectToAction("Details", new { id = recIngredients[0].RecipeID }); ;
}
}
}
部分渲染正确，CreateIngredientsForRecipe.cshtml 是：
<table class="table">
<tr>
<th>
@Html.DisplayNameFor(model => model.IngredientName)
</th>
<th>
@Html.DisplayName("Is it in your kitchen?")
</th>
<th></th>
</tr>
@foreach (var item in Model) {
<tr>
<td>
@Html.DisplayFor(modelItem => item.IngredientName)
</td>
<td>
@Html.EditorFor(modelItem => item.IngredientAmount)
</td>
</tr>
}
<tr>
<td>@Html.ActionLink("Don't see the ingredients you need? Click here to add them to the ingredient database!", "Create", "Ingredient")</td>
</tr>
现在，我的问题。当我单击页面底部的“创建”按钮时，我希望它触发 CreateRecipe 以及 CreateRecipeIngredients 的操作和方法。我不确定该怎么做，但我已经写了到目前为止的内容，这就是我的代码中当前的内容。我不记得我都试过了，但现在，它向我反击的例外是
User was unable to create a list of ingredients for a recipe, error: System.InvalidOperationException: ExecuteNonQuery requires an open and available Connection. The connection's current state is closed.
at System.Data.SqlClient.SqlCommand.ValidateCommand(String method, Boolean async)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at DAL.RecipeIngredientDAO.CreateRecipeIngredients(RecipeDM recipe) in C:\Users\Sabba\Documents\Visual Studio 2015\Projects\MyKitchen\DAL\RecipeIngredientDAO.cs:line 73
在过去的两天里，我花了将近整整 20 个小时试图让这个东西工作，但无济于事。除了这一件事，我几乎完成了整个项目的其余部分，这让我非常疯狂。
有人可以指出我的写作方向，使它按照我想要的方式工作，或者至少按照它需要的方式工作吗？
根据错误，请打开连接。
使用（SqlConnection 连接 = 新的 SqlConnection（ConnectionString）） {
connection.open();
... }
public class Address
{
public int? AddressID { get; set; }
public string City { get; set; }
}
public class Account
{
public int? AccountID { get; set; }
public string Name { get; set; }
public List<Address> Addresses { get; set; }
}
public class AccountRepository
{
public void Save(Account newAccount)
{
using (var conn = new SqlConnection())
{
conn.Open();
var tran = conn.BeginTransaction();
try
{
//add account
var cmd = new SqlCommand();
cmd.Connection = conn;
cmd.Transaction = tran;
cmd.CommandType = CommandType.Text;
cmd.CommandText = @"
INSERT INTO Accounts
VALUEs (@p_account_name);
SET @p_account_ID = scope_identity();
";
//param to get account ID
var accountID = new SqlParameter("p_account_id", typeof(int));
accountID.Direction = ParameterDirection.Output;
cmd.Parameters.Add(accountID);
cmd.Parameters.AddWithValue("p_account_name", newAccount.Name);
cmd.ExecuteNonQuery();
newAccount.AccountID = (int)accountID.Value;
if (newAccount.Addresses.Count > 0)
{
//add address
foreach (var address in newAccount.Addresses)
{
cmd = new SqlCommand();
cmd.Connection = conn;
cmd.Transaction = tran;
cmd.CommandType = CommandType.Text;
cmd.CommandText = @"
INSERT INTO Address (account_id, city)
VALUEs (@p_account_id, @p_city);
SET @p_address_ID = scope_identity();
";
//param to get address ID
var addressID = new SqlParameter("p_address_id", typeof(int));
addressID.Direction = ParameterDirection.Output;
cmd.Parameters.Add(addressID);
cmd.Parameters.AddWithValue("p_account_id", newAccount.AccountID);
cmd.Parameters.AddWithValue("p_city", address.City);
cmd.ExecuteNonQuery();
address.AddressID = (int)addressID.Value;
}
}
//commit transaction
tran.Commit();
}
catch (Exception ex)
{
tran.Rollback();
throw;
}
}
}
}
我没有测试代码，但你明白了。只需创建一个新的控制台应用程序并对其进行测试。