我的 MVC .NET Core 项目的一个页面上有一个下拉列表,我想为其自定义默认验证文本.
I have a dropdown list on one of my pages in my MVC .NET Core project that I want to customise the default validation text for.
<select asp-for="ProductID" class="form-control" asp-items="ViewBag.ProductID">
<option value="">--Select Product --</option>
</select>
<span asp-validation-for="ProductID" class="text-danger" />
给出的标准验证错误消息是产品 ID 字段是必需的".我想把它改成别的东西.
The standard validation error message given is "The Product ID field is required". I want to change this to something else.
我试过用这个
<span asp-validation-for="ProductID" class="text-danger">Please enter a product</span>
但是当页面加载而不是单击按钮时会显示错误消息
But the error message displays when the page loads instead of when the button is clicked
自定义验证文本的适当方法是什么?
What is the appropriate way to customise validation text?
一般是在你想要返回Controller的ViewModel中完成:
That's normally done in the ViewModel you want to return to the Controller:
public class SomeViewModel
{
[Required(ErrorMessage = "Your elegant error message goes here")]
public int ProductId { get; set; }
}
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