Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / MIT / System / Web / UI / MobileControls / ObjectListField.cs / 1305376 / ObjectListField.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- using System; using System.Collections; using System.ComponentModel; using System.Diagnostics; using System.Globalization; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.HtmlControls; using System.Security.Permissions; namespace System.Web.UI.MobileControls { /* * Object List Field class. * * Copyright (c) 2000 Microsoft Corporation */ ///[ PersistName("Field") ] [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] [Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")] public sealed class ObjectListField : IStateManager { private StateBag _stateBag = new StateBag(); private bool _marked; private PropertyDescriptor _dataFieldDescriptor; private ObjectList _owner; private bool _selfReference = false; /// [ DefaultValue("") ] public String Name { get { String s = (String)ViewState["Name"]; return (s == null) ? String.Empty : s; } set { ViewState["Name"] = value; } } /// [ DefaultValue("") ] public String DataField { get { String s = (String)ViewState["DataField"]; return (s == null) ? String.Empty : s; } set { ViewState["DataField"] = value; NotifyOwnerChange(); } } /// [ DefaultValue("") ] public String DataFormatString { get { String s = (String)ViewState["DataFormatString"]; return (s == null) ? String.Empty : s; } set { ViewState["DataFormatString"] = value; NotifyOwnerChange(); } } /// [ DefaultValue("") ] public String Title { get { String s = (String)ViewState["Title"]; return (s == null) ? String.Empty : s; } set { ViewState["Title"] = value; } } /// [ DefaultValue(true) ] public bool Visible { get { Object b = ViewState["Visible"]; return (b == null) ? true : (bool)b; } set { ViewState["Visible"] = value; } } internal bool SelfReference { get { return _selfReference; } set { _selfReference = value; } } internal String UniqueID { get { Object o = ViewState["Name"]; if (o != null) { return (String)o; } return (String)ViewState["DataField"]; } } private void NotifyOwnerChange() { // Only called if databinding behavior of the field changes. if (_owner != null) { _owner.OnFieldChanged(false); // fieldAddedOrRemoved = false; } } private StateBag ViewState { get { return _stateBag; } } internal void SetOwner(ObjectList owner) { _owner = owner; } /// public void DataBindItem(int fieldIndex, ObjectListItem item) { Object dataItem = item.DataItem; if (dataItem == null) { return; } if (!SelfReference) { String dataField = DataField; if (dataField.Length == 0) { return; } _dataFieldDescriptor = TypeDescriptor.GetProperties(dataItem).Find(dataField, true); if (_dataFieldDescriptor == null && !_owner.MobilePage.DesignMode) { throw new Exception( SR.GetString(SR.ObjectListField_DataFieldNotFound, dataField)); } } Object data; if (_dataFieldDescriptor != null) { data = _dataFieldDescriptor.GetValue(dataItem); } // Use fake databound text if the datasource is not accessible at designtime. else if (_owner.MobilePage.DesignMode) { data = SR.GetString(SR.ObjectListField_DataBoundText); } else { Debug.Assert(SelfReference, "Shouldn't get this far if !SelfReference"); data = dataItem; } String dataText; if ((data != null) && (data != System.DBNull.Value)) { String dataFormatString = DataFormatString; if (dataFormatString.Length > 0) { dataText = String.Format(CultureInfo.InvariantCulture, dataFormatString, data); } else { dataText = data.ToString(); } } else { dataText = String.Empty; } item[fieldIndex] = dataText; } ///////////////////////////////////////////////////////////////////////// // STATE MANAGEMENT ///////////////////////////////////////////////////////////////////////// /// /// bool IStateManager.IsTrackingViewState { get { return _marked; } } /// /// void IStateManager.TrackViewState() { _marked = true; ((IStateManager)ViewState).TrackViewState(); } /// /// void IStateManager.LoadViewState(Object state) { if (state != null) { ((IStateManager)ViewState).LoadViewState(state); } } /// /// Object IStateManager.SaveViewState() { return ((IStateManager)ViewState).SaveViewState(); } internal void SetDirty() { // VSWHIDBEY 236464. The bag needs to be set dirty not individual items. _stateBag.SetDirty(true); /* foreach (StateItem item in _stateBag.Values) { item.IsDirty = true; } */ } internal void ClearViewState() { ViewState.Clear(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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