mcs/class/System.Web/System.Web.UI.HtmlControls/HtmlInputFile.cs

   1 /*      System.Web.UI.HtmlControls\r
   2 *       Authors\r
   3 *               Leen Toelen (toelen@hotmail.com)\r
   4 */\r
   5 \r
   6 using System;\r
   7 using System.ComponentModel;\r
   8 using System.Web;\r
   9 using System.Web.UI;\r
  10 using System.Globalization;\r
  11 using System.Collections.Specialized;\r
  12 \r
  13 namespace System.Web.UI.HtmlControls{\r
  14         [ValidationProperty("Value")]\r
  15         public class HtmlInputFile : HtmlInputControl, IPostBackDataHandler{\r
  16                 \r
  17                 public HtmlInputFile():base("file"){}\r
  18                 \r
  19                 bool IPostBackDataHandler.LoadPostData (string postDataKey,\r
  20                                                        NameValueCollection postCollection)\r
  21                 {\r
  22                         return false;\r
  23                 }\r
  24                 \r
  25                 void IPostBackDataHandler.RaisePostDataChangedEvent ()\r
  26                 {\r
  27                 }\r
  28                 \r
  29                 [DefaultValue("")]\r
  30                 [WebCategory("Behavior")]\r
  31                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
  32                 public string Accept{\r
  33                         get{\r
  34                                 string attr = Attributes["accept"];\r
  35                                 if (attr != null)\r
  36                                         return attr;\r
  37                                 return String.Empty;\r
  38                         }\r
  39                         set{\r
  40                                 Attributes["accept"] = AttributeToString(value);\r
  41                         }\r
  42                 }\r
  43                 \r
  44                 [DefaultValue("")]\r
  45                 [WebCategory("Behavior")]\r
  46                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
  47                 public int MaxLength{\r
  48                         get{\r
  49                                 string attr = Attributes["maxlength"];\r
  50                                 if (attr != null)\r
  51                                         return Int32.Parse(attr, CultureInfo.InvariantCulture);\r
  52                                 return -1;\r
  53                         }\r
  54                         set{\r
  55                                 Attributes["maxlength"] = AttributeToString(value);\r
  56                         }\r
  57                 }\r
  58                 \r
  59                 [DefaultValue("")]\r
  60                 [WebCategory("Appearance")]\r
  61                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
  62                 public int Size{\r
  63                         get{\r
  64                                 string attr = Attributes["size"];\r
  65                                 if (attr != null)\r
  66                                         return Int32.Parse(attr, CultureInfo.InvariantCulture);\r
  67                                 return -1;\r
  68                         }\r
  69                         set{\r
  70                                 Attributes["size"] = AttributeToString(value);\r
  71                         }\r
  72                 }\r
  73                 \r
  74                 [DefaultValue("")]\r
  75                 [WebCategory("Misc")]\r
  76                 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]\r
  77                 public HttpPostedFile PostedFile{\r
  78                         get{\r
  79                                 return Context.Request.Files[RenderedName];\r
  80                         }\r
  81                 }\r
  82 \r
  83                 protected override void OnPreRender (EventArgs e)\r
  84                 {\r
  85                         base.OnPreRender (e);\r
  86                         for (Control ctrl = this.Parent; ctrl != null && !(ctrl is Page); ctrl = ctrl.Parent) {\r
  87                                 if (!(ctrl is HtmlForm))\r
  88                                         continue;\r
  89 \r
  90                                 HtmlForm form = (HtmlForm) ctrl;\r
  91                                 if (form.Enctype == "")\r
  92                                         form.Enctype = "multipart/form-data";\r
  93                                 break;\r
  94                         }\r
  95                 }\r
  96 #if NET_1_1\r
  97                 [Browsable (false)]\r
  98                 public override string Value {\r
  99                         get {\r
 100                                 HttpPostedFile file = PostedFile;\r
 101                                 if (file == null)\r
 102                                         return "";\r
 103 \r
 104                                 return file.FileName;\r
 105                         }\r
 106 \r
 107                         set {\r
 108                                 throw new NotSupportedException ();\r
 109                         }\r
 110                 }\r
 111 #endif\r
 112                 \r
 113         } // class HtmlInputFile\r
 114 } // namespace System.Web.UI.HtmlControls\r
 115 \r