mcs/class/System.Web.DynamicData/Test/WebPages/DynamicData/FieldTemplates/ForeignKey_Edit.ascx.cs

   1 using System;
   2 using System.Data;
   3 using System.Configuration;
   4 using System.Collections;
   5 using System.Collections.Specialized;
   6 using System.Linq;
   7 using System.Web;
   8 using System.Web.Security;
   9 using System.Web.UI;
  10 using System.Web.UI.WebControls;
  11 using System.Web.UI.WebControls.WebParts;
  12 using System.Web.UI.HtmlControls;
  13 using System.Xml.Linq;
  14 using System.Web.DynamicData;
  15
  16 public partial class ForeignKey_EditField : System.Web.DynamicData.FieldTemplateUserControl {
  17     protected void Page_Load(object sender, EventArgs e) {
  18         if (DropDownList1.Items.Count == 0) {
  19             if (!Column.IsRequired) {
  20                 DropDownList1.Items.Add(new ListItem("[Not Set]", ""));
  21             }
  22
  23             PopulateListControl(DropDownList1);
  24         }
  25     }
  26
  27     protected override void OnDataBinding(EventArgs e) {
  28         base.OnDataBinding(e);
  29
  30         if (Mode == DataBoundControlMode.Edit) {
  31             string foreignkey = ForeignKeyColumn.GetForeignKeyString(Row);
  32             ListItem item = DropDownList1.Items.FindByValue(foreignkey);
  33             if (item != null) {
  34                 DropDownList1.SelectedValue = foreignkey;
  35             }
  36         }
  37     }
  38
  39     protected override void ExtractValues(IOrderedDictionary dictionary) {
  40         // If it's an empty string, change it to null
  41         string val = DropDownList1.SelectedValue;
  42         if (val == String.Empty)
  43             val = null;
  44
  45         ExtractForeignKey(dictionary, val);
  46     }
  47
  48     public override Control DataControl {
  49         get {
  50             return DropDownList1;
  51         }
  52     }
  53 }