我是节点和表达新手.我已经看到了使用"res.send"和"return res.send"的app.get和app.post示例.这些都一样吗?
var express = require('express');
var app = express();
app.get('/', function(req, res) {
res.type('text/plain');
res.send('i am a beautiful butterfly');
});
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要么
var express = require('express');
var app = express();
app.get('/', function(req, res) {
res.type('text/plain');
return res.send('i am a beautiful butterfly');
});
Run Code Online (Sandbox Code Playgroud) 我看到越来越多的 OnInitialized 和 OnInitializedAsync() 返回 base.OnInitialized[Async] 的示例。但为什么?微软网站上的示例不包括返回基本方法
protected override Task OnInitializedAsync()
{
Contact = new();
return base.OnInitializedAsync();
}
Run Code Online (Sandbox Code Playgroud) 我想确认客户订阅已被取消.该条纹API文档仅指返回"主动"订阅.如何获得所有订阅的列表?
列出订阅
您可以看到客户的有效订阅列表.
Run Code Online (Sandbox Code Playgroud)GET https://api.stripe.com/v1/customers/{CUSTOMER_ID}/subscriptions
检索客户的订阅
默认情况下,您可以直接在客户对象上查看存储在客户上的10个最新活动订阅,但您也可以检索有关客户的特定活动订阅的详细信息.
Run Code Online (Sandbox Code Playgroud)GET https://api.stripe.com/v1/customers/{CUSTOMER_ID}/subscriptions/{SUBSCRIPTION_ID}
当我运行以下迁移时,我收到以下错误:
ALTER TABLE语句与FOREIGN KEY约束冲突
我有一个现有的数据库并重构模型以包含导航属性.
查看原始模型,然后查看新模型:
原型号:
public class Student
{
public int ID { get; set; }
public string Name { get; set; }
public string Country { get; set; }
}
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新模式:
public class Student
{
public int ID { get; set; }
public string Name { get; set; }
public int CountryID { get; set; }
public virtual Country Country { get; set; }
}
public class Country
{
public int ID { get; set; }
public …
Run Code Online (Sandbox Code Playgroud) 我正在尝试使用 MVC5 使用 Code First Migration 和 OWIN Identity 2 为用户和角色设定种子。在升级到 2.0 之前,我已经完成了这项工作。
首先,当使用DropCreateDatabaseIfModelChanges的非代码优先迁移示例时,以下工作
IdentityConfig.cs 文件中的 ApplicationDbInitializer 类:
public class ApplicationDbInitializer : DropCreateDatabaseIfModelChanges<ApplicationDbContext>
{
protected override void Seed(ApplicationDbContext context)
{
InitializeIdentityForEF(context);
base.Seed(context);
}
public static void InitializeIdentityForEF(ApplicationDbContext db)
{
var userManager = HttpContext
.Current.GetOwinContext()
.GetUserManager<ApplicationUserManager>();
var roleManager = HttpContext.Current
.GetOwinContext()
.Get<ApplicationRoleManager>();
const string name = "admin@admin.com";
const string password = "Admin@123456";
const string roleName = "Admin";
//Create Role Admin if it does not exist
var role = roleManager.FindByName(roleName); …
Run Code Online (Sandbox Code Playgroud) 我想扩展AWS PowerShell命令.许多AWS开发工具包都在GitHub上,例如AWS .NET SDK,而不是用于Windows PowerShell的AWS工具.
我正在尝试播种(使用外部资源,即 CSV 文件)与 Azure 网站关联的 Azure SQL 数据库。
我能够在开发环境中使用EF Migration Seed 方法和一个 CSV 文件在开发环境中为数据库设置种子,在Migration.cs 文件中定义如下。注意:Visual Studio 中项目中的 CSV 文件设置为 Build Action to Embedded Resource。
public void SeedData(WebApp.Models.ApplicationDbContext Context)
{
Assembly assembly = Assembly.GetExecutingAssembly();
string resourceName = "WebApp.SeedData.Name.csv";
using (Stream stream = assembly.GetManifestResourceStream(resourceName))
{
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
CsvReader csvReader = new CsvReader(reader);
csvReader.Configuration.WillThrowOnMissingField = false;
var records = csvReader.GetRecords<Products>().ToArray();
foreach (Product record in records)
{
Context.Products.AddOrUpdate(record);
}
}
}
Context.SaveChanges();
}
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当我从 …
entity-framework azure-web-app-service entity-framework-migrations
我想将会员订阅添加到asp.net mvc网站。我希望使用现有的库来合并成员资格和订阅功能。我搜索了,但是找不到任何库或nuget模块。
我想使用Braintree框架来创建和管理订阅和付款,但是没有找到集成示例。
I have always written my LINQ queries with the predicate in the Where clause followed by the FirstOrDefault clause. I started seeing examples with the predicate in the FirstOrDefault clause.
Is one better than the other? Would the answer be different with EF (SQL)?
A. Using Where Clause
List<Product> products = GetProductList();
Product productWhere = products.Where(p => p.ProductID == 789).FirstOrDefault();
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B. No Where Clause
List<Product> products = GetProductList();
Product productNoWhere = products.FirstOrDefault(p => p.ProductID == 789);
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https://code.msdn.microsoft.com/LINQ-Element-Operators-0f3f12ce
在输入字段"bootbox1"上出现模糊事件后,我想在消息模式关闭时使用Bootstrap Modal作为消息,将转到输入字段"bootbox2".但是输入字段没有得到关注.
我究竟做错了什么?
HTML
<input type="text" id="bootbox" />
<input type="text" id="bootbox2" />
<div id="myModal" class="modal fade">
<div class="modal-dialog">
<div class="modal-content">
<!-- dialog body -->
<div class="modal-body">
<button type="button" class="close" data-dismiss="modal">×</button>Hello world!</div>
<!-- dialog buttons -->
<div class="modal-footer">
<button type="button" class="btn btn-primary">OK</button>
</div>
</div>
</div>
</div>
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JS
$('#bootbox').on('blur', function checkSelection(e) {
$("#myModal").on("show", function () { // wire up the OK button to dismiss the modal when shown
$("#myModal a.btn").on("click", function (e) {
console.log("button pressed"); // just as an example...
$("#myModal").modal('hide'); …
Run Code Online (Sandbox Code Playgroud) entity-framework-migrations ×2
asp.net-mvc ×1
blazor ×1
braintree ×1
c# ×1
express ×1
focus ×1
javascript ×1
jquery ×1
linq ×1
node.js ×1
owin ×1
sql-server ×1
stripe.net ×1