asp.net-mvc TextBoxFor 中限制为 2 位小数
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Limit to 2 decimals in TextBoxFor
提问by Kris-I
The code below works fine but, in the textbox the decimal value has this format "0,0000" (, is the decimal separator). I'd like have only 2 decimal. How can I do this ?
下面的代码工作正常，但在文本框中，十进制值的格式为“0,0000”（，是小数点分隔符）。我想要只有两位小数。我怎样才能做到这一点 ？
Thanks,
谢谢，
//Database model used with NHibernate
public class Bank
{
public virtual int Id { get; set; }
public virtual string FirstName { get; set; }
public virtual string LastName{ get; set; }
public virtual decimal Amount { get; set; }
}
//MVC Model
public class MyModel
{
public Bank Bank { get; set; }
}
//View
@Html.TextBoxFor(m => m.Bank.Amount, new { id = "tbAmount"})
Update 1
更新 1
In the debugger, I don't see any decimal, wehn I do step by step inside (o @HTML.Textbofor) the view, the value does not have any decimal but when the page is displayed there are 4 decimals
在调试器中，我没有看到任何小数点，当我在视图中逐步执行（o @HTML.Textbofor）时，该值没有任何小数点，但是当显示页面时有 4 个小数点
//Database model used with NHibernate
public class Bank
{
public virtual int Id { get; set; }
public virtual string FirstName { get; set; }
public virtual string LastName{ get; set; }
public virtual decimal Amount { get; set; }
}
//Class for view
public class ViewBank
{
[DisplayFormat(DataFormatString = "{0:n2}", ApplyFormatInEditMode = true)]
public decimal Amount { get; set; }
}
//MVC Model
public class MyModel
{
public Bank Bank { get; set; }
var ViewBank = new ViewBank() { Amount = Bank.Amount};
}
//View
@Html.TextBoxFor(m => m.Amount, new { id = "tbAmount"})
回答by Darin Dimitrov
I would use editor templates and I would notuse my NHibernate domain models in my views. I would define view models which are specifically tailored to the requirements of the given view (in this case limiting the amount to 2 decimals):
我会使用编辑器模板，并且不会在我的视图中使用我的 NHibernate 域模型。我将定义专门针对给定视图的要求定制的视图模型（在这种情况下，将数量限制为 2 位小数）：
[DisplayFormat(DataFormatString = "{0:n2}", ApplyFormatInEditMode = true)]
public decimal Amount { get; set; }
and then:
进而：
@Html.EditorFor(m => m.Bank.Amount)
回答by Alexandros B
This works for me
这对我有用
@Html.TextBox("Amount", String.Format("{0:0.00}", Model.Bank.Amount), new { id = "tbAmount"})
EDIT:
编辑：
This is for TextBoxFor (does not work on MVC3)
这是用于 TextBoxFor（不适用于 MVC3）
@{var formated = String.Format("{0:0.00}", Model.Bank.Amount);}
@Html.TextBoxFor(m => m.Bank.Amount, formated, new { id = "tbAmount"})
回答by thelem
In MVC 4 you can now pass the format as the second parameter
在 MVC 4 中，您现在可以将格式作为第二个参数传递
//View
@Html.TextBoxFor(m => m.Bank.Amount, "{0:n2}", new { id = "tbAmount"})
回答by davke
If you don't have customized editor template for Decimaltype then EditorFordecorated with DisplayFormatAttributewould probably work out of the box.
如果您没有自定义的Decimal类型编辑器模板，那么EditorFor装饰DisplayFormatAttribute可能会立即使用。
For a custom editor template I ended up using something like:
对于自定义编辑器模板，我最终使用了以下内容：
@model decimal?
@{
string displayValue;
if (Model == null)
{
displayValue = null;
}
else {
var formatString = (ViewData.ModelMetadata).DisplayFormatString;
displayValue = formatString == null ? Model.ToString() : string.Format(formatString, Model);
}
}
<div class="form-group">
@Html.LabelFor(c => c)
@Html.TextBoxFor(c => c, new { type = "text", Value = displayValue, @class = "form-control" })
@Html.ValidationMessageFor(c => c)
</div>
Which works when the property is decorated with DisplayFormatAttributelike so:
当属性被这样装饰时，它会起作用DisplayFormatAttribute：
[DisplayFormat(DataFormatString = "{0:n1}", ApplyFormatInEditMode = true), Display(Name = "Commission")]
public decimal? CommissionPercentage { get; set; }
