我从服务器A和B获得了2个值.我一次只能有一个值.
我需要的是一次要检查的无线电之一,只有一个真正的价值.
var viewModel = {
radioSelectedOptionValue: ko.observable("false"),
A: ko.observable("false"),
B: ko.observable("false")
};
ko.applyBindings(viewModel);Run Code Online (Sandbox Code Playgroud)
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/2.1.0/knockout-min.js"></script>
<div class='liveExample'>
<h3>Radio View model</h3>
<table>
<tr>
<td class="label">Radio buttons:</td>
<td>
<label><input name="Test" type="radio" value="True" data-bind="checked: A" />Alpha</label>
<label><input name="Test" type="radio" value="True" data-bind="checked: B" />Beta</label>
</td>
</tr>
</table>
A-<span data-bind="text: A"></span>
B-<span data-bind="text: B"></span>
</div>Run Code Online (Sandbox Code Playgroud)
我有这个:
using (var con= new SqlConnection(ConfigurationManager.ConnectionStrings["sqlcon"].ConnectionString))
{
try
{
// many transactions
}
catch (Exception e)
{
con.BeginTransaction().Rollback();
}
}
Run Code Online (Sandbox Code Playgroud)
这项工作是我的问题.我知道另一种方法是创建一个事务然后打开然后回滚.
我似乎无法计算出这项工作的价值。任何输入将不胜感激。
我从服务器获取我的价格值。
var pModel = function () {
var self = this;
self.prices = ko.observable({ "ID": 1,"Price1": 12,"Price2": 12});
self.Total = ko.computed(function () {
var total = 0;
total = self.prices().Price1 + self.prices().Price2;
return total;
});
};
var VModel = new pModel();
ko.applyBindings(VModel);Run Code Online (Sandbox Code Playgroud)
<script src="https://cdnjs.cloudflare.com/ajax/libs/knockout/2.1.0/knockout-min.js"></script>
<form action='/someServerSideHandler'>
<table>
<thead>
<tr>Prices</tr>
</thead>
<tbody id="calc">
<tr>
<td>Price 1</td>
<td>
<input data-bind='value: prices().Price1' />
</td>
</tr>
<tr>
<td>price 2</td>
<td>
<input data-bind='value: prices().Price2' />
</td>
</tr>
<td>TOTAL</td>
<td> <span data-bind="text: $root.Total"></span>
</td>
</tbody> …Run Code Online (Sandbox Code Playgroud)我想知道如果我无法插入,是否有办法说明删除删除.
请指教.
像下面的东西.
BEGIN TRAN
Delete from MYTABLE where ID=@ID;
INSERT INTO MYTABLE (ID, NAME)
SELECT @ID, NAME
COMMIT
Run Code Online (Sandbox Code Playgroud) 我在MVC应用程序中有一个模型Auto,它具有如下属性
public string Id { get; set; }
public bool IsOOS{ get; set; }
public string Make { get; set; }
public string Model { get; set; }
[XmlElement(IsNullable = true)]
public DateTime? RegisteredDate { get; set; }
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还有一个有这个......
var a = new Auto(){
Id = someIDcomingfromServer,
IsOOS = someOOScomingFromServer,
...
}
Run Code Online (Sandbox Code Playgroud)
我想要做的是...循环遍历这些并查看是否有任何属性现在为null.
我如何循环并查看是否有任何属性(Id,IsOOS等)包含null?
谢谢
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