這個控制元件SharePoint用來選擇Field ,和Content Type, 以下是一個完整的示例。
<SharePoint:GroupedItemPicker ID="SelectColumn" runat="server" CandidateControlId="SelectCandidate" ResultControlId="SelectResult" AddButtonId="AddButton" RemoveButtonId="RemoveButton" /> <table class="ms-long" cellpadding="0" cellspacing="0" border="0"> <tr> <td class="ms-input"> <SharePoint:SPHtmlSelect ID="SelectCandidate" Width="143" Height="125" runat="server" multiple="true" /> </td> <td style="padding-left: 10px"/> <td align="center" valign="middle" class="ms-input"> <button id="AddButton" runat="server" style="width:80px"> <SharePoint:EncodedLiteral ID="EncodedLiteral3" runat="server" Text="<%$Resources:wss,multipages_gip_add%>" EncodeMethod='HtmlEncode' /> </button> <br /> <br /> <button id="RemoveButton" runat="server" style="width:80px"> <SharePoint:EncodedLiteral ID="EncodedLiteral4" runat="server" Text="<%$Resources:wss,multipages_gip_remove%>" EncodeMethod='HtmlEncode' /> </button> </td> <td style="padding-left: 10px"/> <td class="ms-input"> <SharePoint:SPHtmlSelect ID="SelectResult" Width="143" Height="125" runat="server" multiple="true" /> </td> <td align="center" valign="middle" class="ms-input"> <input type="button" runat="server" id="SelectResultUp" value="Up" onclick="listbox_move(SelectResultID, 'up'); GipSetHiddenControlValue(window[SelectColumnsID + '_m']);"/> <br /> <br /> <input type="button" runat="server" id="SelectResultDown" value="Down" onclick="listbox_move(SelectResultID, 'down'); GipSetHiddenControlValue(window[SelectColumnID + '_m']);"/> </td> </tr> </table>
伺服器端程式碼:
foreach (SPField field in SPContext.Current.List.Fields) { SelectColumn.AddChoice(field.InternalName, field.Title, string.Empty, string.Empty); }
1 調整選中項的順序:
function listbox_move(listID, direction) { var listbox = document.getElementById(listID); if (direction == "up") { for (var i = 0; i < listbox.options.length; i++) { var option = listbox.options[i]; if (option.selected == true) { listbox_moveOption(listbox, i, direction); } } } else { for (var i = listbox.options.length-1; i >=0; i--) { var option = listbox.options[i]; if (option.selected == true) { listbox_moveOption(listbox, i, direction); } } } } function listbox_moveOption(listbox, i, direction) { var selIndex = i; if (-1 == selIndex) { alert("Please select an option to move."); return; } var increment = -1; if (direction == 'up') increment = -1; else increment = 1; if ((selIndex + increment) < 0 || (selIndex + increment) > (listbox.options.length - 1)) { return; } var selValue = listbox.options[selIndex].value; var selText = listbox.options[selIndex].text; listbox.options[selIndex].value = listbox.options[selIndex + increment].value listbox.options[selIndex].text = listbox.options[selIndex + increment].text listbox.options[selIndex].selected = false; listbox.options[selIndex + increment].value = selValue; listbox.options[selIndex + increment].text = selText; listbox.options[selIndex + increment].selected = true; }
2, 更新HiddenField
函式 GipSetHiddenControlValue 位於 "%program files%\Common Files\microsoft shared\Web Server Extensions\15\TEMPLATE\LAYOUTS\GroupedItemPicker.js"
var groupItemData = []; for (var i = 0, max = fields.length; i < max; i++) { options += "<option value=\"" + fields[i].Second + "\">" + STSHtmlEncode(fields[i].First) + "</option>"; groupItemData[i+1] = [fields[i].Second, fields[i].First]; } spbLookup(this.lookupFieldSelect).html(options); window[this.context.appearanceColumnsID + "_m"].data = [groupItemData]; spbLookup(this.appearanceColumnsSelectResult).html(""); GipRefreshGroupCore(window[this.context.appearanceColumnsID + "_m"]);