1 @using (Html.BeginForm()) {
 2     @Html.ValidationSummary(true)
 3     <fieldset>
 4         <legend>Album</legend>
 5
 6         @Html.HiddenFor(model => model.AlbumId)
 7
 8         <div class="editor-label">
 9             @Html.LabelFor(model => model.GenreId, "Genre")
10         </div>
11         <div class="editor-field">
12             @Html.DropDownList("GenreId", String.Empty)
13             @Html.ValidationMessageFor(model => model.GenreId)
14         </div>
15
16         <div class="editor-label">
17             @Html.LabelFor(model => model.ArtistId, "Artist")
18         </div>
19         <div class="editor-field">
20             @Html.DropDownList("ArtistId", String.Empty)
21             @Html.ValidationMessageFor(model => model.ArtistId)
22         </div>
23
24         <div class="editor-label">
25             @Html.LabelFor(model => model.Title)
26         </div>
27         <div class="editor-field">
28             @Html.EditorFor(model => model.Title)
29             @Html.ValidationMessageFor(model => model.Title)
30         </div>
31
32         <div class="editor-label">
33             @Html.LabelFor(model => model.Price)
34         </div>
35         <div class="editor-field">
36             @Html.EditorFor(model => model.Price)
37             @Html.ValidationMessageFor(model => model.Price)
38         </div>
39
40         <div class="editor-label">
41             @Html.LabelFor(model => model.AlbumArtUrl)
42         </div>
43         <div class="editor-field">
44             @Html.EditorFor(model => model.AlbumArtUrl)
45             @Html.ValidationMessageFor(model => model.AlbumArtUrl)
46         </div>
47
48         <p>
49             <input type="submit" value="Save" />
50         </p>
51     </fieldset>
52 }

音乐商店编辑专辑的视图

public class Album{[ScaffoldColumn(false)]public int AlbumId { get; set; }[DisplayName("Genre")]public int GenreId { get; set; }[DisplayName("Artist")]public int ArtistId { get; set; }[Required(ErrorMessage = "An Album Title is required")][StringLength(160)]public string Title { get; set; }[Required(ErrorMessage = "Price is required")][Range(0.01, 100.00,ErrorMessage = "Price must be between 0.01 and 100.00")]public decimal Price { get; set; }[DisplayName("Album Art URL")][StringLength(1024)]public string AlbumArtUrl { get; set; }public virtual Genre Genre { get; set; }public virtual Artist Artist { get; set; }public virtual List<OrderDetail> OrderDetails { get; set; }

 [StringLength(160)]public string Title { get; set; }

  // 摘要: //     指定数据字段中允许的最小和最大字符长度。[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false)]public class StringLengthAttribute : ValidationAttribute{// 摘要: //     使用指定的最大长度初始化 System.ComponentModel.DataAnnotations.StringLengthAttribute//     类的新实例。//// 参数: //   maximumLength://     字符串的最大长度。public StringLengthAttribute(int maximumLength);// 摘要: //     获取或设置字符串的最大长度。//// 返回结果: //     字符串的最大长度。public int MaximumLength { get; }//// 摘要: //     获取或设置字符串的最小长度。//// 返回结果: //     字符串的最小长度。public int MinimumLength { get; set; }// 摘要: //     对指定的错误消息应用格式设置。//// 参数: //   name://     要进行格式设置的错误消息。//// 返回结果: //     带有格式的错误消息。//// 异常: //   System.ArgumentOutOfRangeException://     maximumLength 为负数。- 或 -maximumLength 小于 minimumLength。public override string FormatErrorMessage(string name);//// 摘要: //     确定指定的对象是否有效。//// 参数: //   value://     要验证的对象。//// 返回结果: //     如果指定的对象有效，则为 true；否则为 false。//// 异常: //   System.ArgumentOutOfRangeException://     maximumLength 为负数。- 或 -maximumLength 小于 System.ComponentModel.DataAnnotations.StringLengthAttribute.MinimumLength。public override bool IsValid(object value);}