深圳企业网站建设哪家好,网页设计与制作项目教程第二版,share poine 户做网站,wordpress转换成 dede我写了一个控件Inherits TextBox#xff0c;里面有一个复杂属性Tip#xff0c;但每次postback的时候都说加载viewstate失败#xff0c;除非我在!postback的情况下给Tip.xxx赋值. 下面我贴出代码#xff0c;我已经搞了一天了#xff0c;搞不出什么原因。 JTextBox控件 usin…我写了一个控件Inherits TextBox里面有一个复杂属性Tip但每次postback的时候都说加载viewstate失败除非我在!postback的情况下给Tip.xxx赋值. 下面我贴出代码我已经搞了一天了搞不出什么原因。 JTextBox控件 using System;using System.Collections.Generic;using System.ComponentModel;using System.Text;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace Madou.WebControls{ [DefaultProperty(Text)] [ParseChildren(true), PersistChildren(false)] [ToolboxData({0}:JTextBox runatserver/{0}:JTextBox)] public class JTextBox : System.Web.UI.WebControls.TextBox { public JTextBox() { BackColor System.Drawing.Color.Beige; } Private#regionPrivate private ClipTipComponent _tip; #endregion 定义属性#region定义属性 [Bindable(true)] [Category(Behavior)] [Description(Tip)] [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)] [PersistenceMode(PersistenceMode.InnerProperty)] [NotifyParentProperty(true)] public virtual ClipTipComponent Tip { get { if (_tip null) { _tip new ClipTipComponent(); if (IsTrackingViewState) { ((IStateManager)_tip).TrackViewState(); } } return _tip; } } #endregion override#regionoverride state management#region state management protected override void LoadViewState(object savedState) { Pair p savedState as Pair; //HttpContext.Current.Response.Write(savedState.GetType().ToString()); // HttpContext.Current.Response.Write(savedStatenull); // HttpContext.Current.Response.End(); if (p ! null) { base.LoadViewState(p.First); ((IStateManager)Tip).LoadViewState(p.Second); } else { base.LoadViewState(savedState); } } protected override object SaveViewState() { object baseState base.SaveViewState(); object thisState null; if (Tip ! null) { thisState ((IStateManager)Tip).SaveViewState(); } if (thisState ! null) { return new Pair(baseState, thisState); } else { return baseState; } } protected override void TrackViewState() { if (_tip ! null) { ((IStateManager)_tip).TrackViewState(); } base.TrackViewState(); } #endregion protected override void OnPreRender(EventArgs e) { Tip.RegisterJs(this); base.OnPreRender(e); } protected override void OnLoad(EventArgs e) { if (!Page.IsPostBack) { Tip.CloseText 关闭; } base.OnLoad(e); } #endregion }} Tip属性类 using System;using System.Collections.Generic;using System.ComponentModel;using System.Text;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;using Madou.WebControls.Converter;namespace Madou.WebControls{ [TypeConverter(typeof(ClipTipComponentConverter))] public class ClipTipComponent : IStateManager { Private#regionPrivate private bool _isTrackingViewState; private StateBag _viewState; #endregion public ClipTipComponent() { } 属性#region属性 [Category(Behavior)] [DefaultValue(false)] [Description(是否启用Ajax效果)] [NotifyParentProperty(true)] public bool EnabledAjax { get { return ViewState[EnabledAjax] null ? false : Convert.ToBoolean(ViewState[EnabledAjax]); } set { ViewState[EnabledAjax] value; } } /**//// summary /// 是否使用Tip功能 /// /summary [Category(Behavior)] [DefaultValue(true)] [Description(是否使用ClipTip功能)] [NotifyParentProperty(true)] public bool EnabledClipTip { get { return ViewState[EnabledClipTip] null ? true : Convert.ToBoolean(ViewState[EnabledClipTip]); } set { ViewState[EnabledClipTip] value; } } /**//// summary /// // The width of the clueTip /// /summary [Category(Behavior)] [DefaultValue(275)] [Description(The width of the clueTip)] [NotifyParentProperty(true)] public string TipWidth { get { return ViewState[TipWidth] null ? 275 : ViewState[TipWidth].ToString(); } set { ViewState[TipWidth] value; } } /**//// summary /// // The height of the clueTip. /// /summary [Category(Behavior)] [DefaultValue(auto)] [Description(The height of the clueTip)] [NotifyParentProperty(true)] public string TipHeigth { get { return ViewState[TipHeigth] null ? auto : ViewState[TipHeigth].ToString(); } set { ViewState[TipHeigth] value; } } /**//// summary /// A character used to split the title attribute into the clueTip title and divs /// /summary [Category(Behavior)] [DefaultValue()] [Description(A character used to split the title attribute into the clueTip title and divs)] [NotifyParentProperty(true)] public string SplitTitle { get { return ViewState[SplitTitle] null ? string.Empty : Convert.ToString(ViewState[SplitTitle]); } set { ViewState[SplitTitle] value; } } /**//// summary /// show title bar of the clueTip, even if title attribute not set /// /summary [Category(Behavior)] [DefaultValue(true)] [Description(show title bar of the clueTip, even if title attribute not set)] [NotifyParentProperty(true)] public bool ShowTitle { get { return ViewState[ShowTitle] null ? true : Convert.ToBoolean(ViewState[ShowTitle]); } set { ViewState[ShowTitle] value; } } /**//// summary /// his is also used for a directional class on the same div, depending on where the clueTip is in relation to the invoking element. The class appears in the form of cluetip- direction cluetipClass. this allows you to create your own clueTip theme in a separate CSS file or use one of the three pre-packaged themes: default, jtip, or rounded. /// /summary [Category(Behavior)] [DefaultValue(default)] [Description(default, jtip, or rounded)] [NotifyParentProperty(true)] [Bindable(false)] [TypeConverter(typeof(Madou.WebControls.Converter.ClueTipClassConverter))] public string ClueTipClass { get { return ViewState[ClueTipClass] null ? default : Convert.ToString(ViewState[ClueTipClass]); } set { ViewState[ClueTipClass] value; } } /**//// summary /// class applied to the invoking element onmouseover and removed onmouseout /// /summary [Category(Behavior)] [DefaultValue()] [Description(class applied to the invoking element onmouseover and removed onmouseout)] [NotifyParentProperty(true)] public string HoverClass { get { return ViewState[HoverClass] null ? string.Empty : Convert.ToString(ViewState[HoverClass]); } set { ViewState[HoverClass] value; } } /**//// summary /// if true, displays arrow on appropriate side of clueTip. more info below [8] /// /summary [Category(Behavior)] [DefaultValue(false)] [Description(if true, displays arrow on appropriate side of clueTip)] [NotifyParentProperty(true)] public bool Arrows { get { return ViewState[Arrows] null ? false : Convert.ToBoolean(ViewState[Arrows]); } set { ViewState[Arrows] value; } } [Category(Behavior)] [DefaultValue(true)] [Description(是否有Shadow)] [NotifyParentProperty(true)] public bool DropShadow { get { return ViewState[DropShadow] null ? true : Convert.ToBoolean(ViewState[DropShadow]); } set { ViewState[DropShadow] value; } } [Category(Behavior)] [DefaultValue(6)] [Description(Shadow Steps)] [NotifyParentProperty(true)] public int DropShadowSteps { get { return ViewState[DropShadowSteps] null ? 6 : Convert.ToInt32(ViewState[DropShadowSteps]); } set { ViewState[DropShadowSteps] value; } } /**//// summary /// 如果ture,鼠标点击close才关闭 /// /summary [Category(Behavior)] [DefaultValue(false)] [Description(如果ture,鼠标点击close才关闭)] [NotifyParentProperty(true)] public bool Sticky { get { return ViewState[Sticky] null ? false : Convert.ToBoolean(ViewState[Sticky]); } set { ViewState[Sticky] value; } } /**//// summary /// close when clueTip is moused out /// /summary [Category(Behavior)] [DefaultValue(false)] [Description(close when clueTip is moused out)] [NotifyParentProperty(true)] public bool MouseOutClose { get { return ViewState[MouseOutClose] null ? false : Convert.ToBoolean(ViewState[MouseOutClose]); } set { ViewState[MouseOutClose] value; } } /**//// summary /// hoverOR click, // set to click to force user to click to show clueTip /// /summary [Category(Behavior)] [DefaultValue(hover)] [Description(hoverOR click)] [NotifyParentProperty(true)] [TypeConverter(typeof(Madou.WebControls.Converter.ActivationConverter))] public string Activation { get { return ViewState[Activation] null ? hover : ViewState[Activation].ToString(); } set { ViewState[Activation] value; } } /**//// summary /// if true, and activation is not click, then clicking on a clueTipped link will take user to /// the links href, even if href and tipAttribute are equal /// /summary [Category(Behavior)] [DefaultValue(false)] [Description(if true, and activation is not click)] [NotifyParentProperty(true)] public bool ClickThrough { get { return ViewState[ClickThrough] null ? false : Convert.ToBoolean(ViewState[ClickThrough]); } set { ViewState[ClickThrough] value; } } /**//// summary /// // if true, clueTip will track mouse movement (experimental) /// /summary [Category(Behavior)] [DefaultValue(false)] [Description(if true, clueTip will track mouse movement (experimental))] [NotifyParentProperty(true)] public bool Tracking { get { return ViewState[Tracking] null ? false : Convert.ToBoolean(ViewState[Tracking]); } set { ViewState[Tracking] value; } } /**//// summary /// close clueTip on a timed delay (experimental) /// /summary [Category(Behavior)] [DefaultValue(0)] [Description(close clueTip on a timed delay (experimental))] [NotifyParentProperty(true)] public int DelaydClose { get { return ViewState[DelaydClose] null ? 0 : Convert.ToInt32(ViewState[DelaydClose]); } set { ViewState[DelaydClose] value; } } /**//// summary /// location of close text for sticky cluetips; can be top or bottom or title /// /summary [Category(Behavior)] [DefaultValue(top)] [Description(location of close text for sticky cluetips; can be top or bottom or title)] [NotifyParentProperty(true)] [TypeConverter(typeof(Madou.WebControls.Converter.ClosePositionConverter))] public string ClosePosition { get { return ViewState[ClosePosition] null ? top : ViewState[ClosePosition].ToString(); } set { ViewState[ClosePosition] value; } } [Category(Behavior)] [DefaultValue(关闭)] [Description(Close Text)] [NotifyParentProperty(true)] public string CloseText { get { return ViewState[CloseText] null ? 关闭 : ViewState[CloseText].ToString(); } set { ViewState[CloseText] value; } } /**//// summary /// 字符数 /// /summary [Category(Behavior)] [DefaultValue(0)] [Description(字符数)] [NotifyParentProperty(true)] public int Truncate { get { return ViewState[Truncate] null ? 0 : Convert.ToInt32(ViewState[Truncate]); } set { ViewState[Truncate] value; } } #endregion HELP#regionHELP protected virtual StateBag ViewState { get { if (_viewState null) { _viewState new StateBag(true); if (_isTrackingViewState) ((IStateManager)_viewState).TrackViewState(); } return _viewState; } } #endregion 重写的方法#region重写的方法 public override string ToString() { return ToString(System.Globalization.CultureInfo.InvariantCulture); } public string ToString(System.Globalization.CultureInfo culture) { return TypeDescriptor.GetConverter(GetType()).ConvertToString(null, culture, this); } #endregion IStateManager Members#region IStateManager Members bool IStateManager.IsTrackingViewState { get { return _isTrackingViewState; } } void IStateManager.LoadViewState(object state) { if (state ! null) { ((IStateManager)ViewState).LoadViewState(state); } } object IStateManager.SaveViewState() { object savedState null; if (_viewState ! null) { savedState ((IStateManager)_viewState).SaveViewState(); } else{ // HttpContext.Current.Response.Write(saveState1false); } return savedState; } void IStateManager.TrackViewState() { _isTrackingViewState true; if (_viewState ! null) { ((IStateManager)_viewState).TrackViewState(); } } #endregion internal void SetDirty() { _viewState.SetDirty(true); } internal void RegisterJs(Control target, string clientId) { if (target is WebControl) { string tooltip (target as WebControl).ToolTip; if (string.IsNullOrEmpty(tooltip.Trim())) { if (!EnabledAjax) return; } } if (EnabledClipTip) { JavaScriptWriter w new JavaScriptWriter(); w.AddLine($(function()); w.OpenBlock(); if (!EnabledAjax) { if (string.IsNullOrEmpty(SplitTitle)) SplitTitle |; w.AddLine($(# clientId ).cluetip({splitTitle: SplitTitle ); } else { w.AddLine($(# clientId ).cluetip({splitTitle: ); } w.AddJSONItem(cluetipClass, ClueTipClass); w.AddJSONItem(hoverClass, HoverClass); w.AddJSONItem(arrows, Arrows); w.AddJSONItem(dropShadow, DropShadow); w.AddJSONItem(dropShadowSteps, DropShadowSteps); w.AddJSONItem(sticky, Sticky); w.AddJSONItem(mouseOutClose, MouseOutClose); w.AddJSONItem(activation, Activation); w.AddJSONItem(clickThrough, ClickThrough); w.AddJSONItem(tracking, Tracking); w.AddJSONItem(delayedClose, DelaydClose); w.AddJSONItem(closePosition, ClosePosition); w.AddJSONItem(width, TipWidth); w.AddJSONItem(height, TipHeigth); w.AddJSONItem(closeText, CloseText); w.AddJSONItem(truncate, Truncate); w.AddLine(});); w.CloseBlock(); w.AddLine();); target.Page.ClientScript.RegisterClientScriptBlock(target.GetType(), clientId, w.ToString(), false); } } internal void RegisterJs(Control target) { string clientId target.ClientID; RegisterJs(target, clientId); } }} 出现的问题一定要在!PostBack给Tip.xxx赋值否则出现viewstate不能正常加载的错误提示(如果给JTextBox的Text赋值的话),请问这个是什么原因 bug已经发现原来System.Web.UI.WebControls.TextBox的SaveViewState()已经是Pair 转载于:https://www.cnblogs.com/genson/archive/2008/02/03/1063463.html
