Question

我在模型中显示占位符

@Html.TextBox("",ViewData.TemplateInfo.FormattedModelValue, 
    new { placeholder = ViewData.ModelMetadata.Watermark })

来自Shared\EditorTemplates folder and call it String.cshtml。

现在我想从模型中设置maxlength，而不是像下面那样放入我的视图。

在我的模型中

[Required(ErrorMessage = "Please Enter Community Code")]
[Display(Prompt = "Enter Company Code")]
[StringLength(6)]
public string COMPANYCODE { get; set; }

查看：

@Html.EditorFor(model => model.COMPANYCODE, new { @maxlength = "4" })

我怎样才能做到这一点？

Answer 1

我改变了My model和String.cshtml，如下所示

型号：

[Required(ErrorMessage = "Please Enter Community Code")]
[Display(Prompt = "Enter Community Code")]
[AdditionalMetadata("MaxLength", 4)]
public string COMPANYCODE { get; set; }

String.cshtml

@{
    string maxLength = ViewData.ModelMetadata.AdditionalValues.ContainsKey("MaxLength")
        ? ViewData.ModelMetadata.AdditionalValues["MaxLength"].ToString() : null;
}

 @Html.TextBox("", ViewData.TemplateInfo.FormattedModelValue,
       new { placeholder = ViewData.ModelMetadata.Watermark, @class = "form-control", maxlength = maxLength })

查看：

 @Html.EditorFor(model => model.COMPANYCODE)

它起作用了。

MVC4输入字段maxlength

1 个答案: