XP系统成功升级到SP3后，出现Window Media Player 播放器不能播放硬盘里面的音乐文件，听歌一直用WMP11听，图就是声音效果，没想到升级后竟然不能使用。

由于之前有一次打补丁打上后，也导致Window Media Player 11不能播放音乐文件MP3 ，WMA等不可以，于是就尝试使用之前的解决方法，结果获得解决。

具体解决步骤如下：

1.点击“开始”，再点击“运行”，在“打开”框中输入“regsvr32 jscript.dll”，而后点“确定”，出现成功提示后点OK。
2.按上面的步骤再次输入“regsvr32 vbscript.dll”.
3.再次输入“regsvr32 quartz.dll” 。

如果三次都重新注册成功，问题一般可以都可以解决。

1.運行VS2005 命令行提示，在彈出的命令行Cmd中輸入Devenv/ResetSkipPkgs。

2.或者直接在打開運行【即打開命令行】，敲入Devenv.exe /ResetSkipPkgs.【注意空格】。

 注意輸入命令行之前，最好將打開的的VS關閉。等輸入以上命令行后， VS會重新啟動，即可解決問題。

 code1:     
        string message="I have a test now";
        StringBuilder sb = new StringBuilder();
        sb.Append(" <script type=\"text/javascript\"> \n ");
        sb.Append("    alert(\"" + message + "\") \n");
        sb.Append(" </script> \n");
        Response.Write(sb.ToString());

 code2:   
        string function = string.Format("alert('{0}')", message);
        ClientScript.RegisterStartupScript(this.GetType(), "onclick", function, true);

 code3:
        string function = string.Format("alert('{0}')", message);
        ClientScript.RegisterClientScriptBlock(this.GetType(), "onclick", function, true);

 as you konw ,these three code3 have a the same funtion .

 if you have a test,you will find the differece in them. Actually, the code1 block is equal with code3 block .

 but the code3 block  can help you to improve User Experience,if you don't use the ajax in your solution.

 it's also a dev log for someone who need it.

 BTW,
 the differece in ClientScript.RegisterStartupScript and ClientScript.RegisterClientScriptBlock:

 ClientScript.RegisterClientScriptBlock  adds javascript function block at the right endings of "<form runat="server">" tag of web form.

 and  ClientScript.RegisterStartupScript just appends it above "</form>".
 
 what about Response.Write? you can figure it out.

 or what about  just  design a demo about it.

        Users users = new Users();
        DatabaseField[] queryFields =
        {  
            users[Users .UsersFields .UserCName ],users[Users .UsersFields .UserId ],
            users [Users .UsersFields .UserType],users[Users .UsersFields.XStatus ],
            users [Users .UsersFields .Title ],users [Users .UsersFields .UserEName ]
        };

        QueryCriteria qc = new QueryCriteria(users.TableName, queryFields);

       UsersBusinessObject usersBO = new UsersBusinessObject();

        DataTable dt = usersBO.GetDataTable(qc);

And Now,This DataTable just contain those column in queryFields.

So,it is just like BO.Update(qc);

....

  DatabaseField[] updateFields =
        {
           ui[Users .UsersFields .Address],ui[Users .UsersFields.Title] ,
           ui[Users .UsersFields.DOB ],ui[Users .UsersFields .City ],
           ui[Users .UsersFields .EMail ], ui[Users .UsersFields .Fax ],
           ui[Users .UsersFields .OrgPosition  ],ui[Users .UsersFields .LastLoginDate ],
           ui[Users .UsersFields .Country  ],ui[Users .UsersFields .Postalcode ],
           ui[Users .UsersFields .Province ],ui[Users .UsersFields .Education  ],
           ui[Users .UsersFields .OrgAddress ],ui[Users .UsersFields .OrgCity ],
           ui[Users .UsersFields .OrgName ],ui[Users .UsersFields .OrgCountry],
           ui[Users .UsersFields .OrgPostalcode ], ui[Users .UsersFields .UserType],    
           ui[Users .UsersFields .Phone ],  ui[Users .UsersFields .UserCName ],   
           ui[Users .UsersFields .OrgProvince ]
        };
        QueryCriteria qc = new QueryCriteria(ui.TableName, updateFields);

          Calendar._MN=new Array
                      ('1月','2月','3月','4月', '5月','6月','7月',
                      '8月','9月','10月', '11月', '12月');
                      Calendar._SMN=Calendar._MN;
                      Calendar._TT={};
                      Calendar._TT['INFO'] = 'カレンダーについて';
                      Calendar._TT['TOGGLE']='週の最初の曜日を切り替え';
                      Calendar._TT['PREV_YEAR']='前年';
                      Calendar._TT['PREV_MONTH']='前月';
                      Calendar._TT['GO_TODAY']='今日';
                      Calendar._TT['NEXT_MONTH']='翌月';
                      Calendar._TT['NEXT_YEAR']='翌年';
                      Calendar._TT['SEL_DATE']='日付選択';
                      Calendar._TT['DRAG_TO_MOVE']='ウィンドウの移動';
                      Calendar._TT['PART_TODAY']='(今日)';
                      Calendar._TT['MON_FIRST']='月曜日を先頭に';
                      Calendar._TT['SUN_FIRST']='日曜日を先頭に';
                      Calendar._TT['CLOSE']='閉じる';
                      Calendar._TT['TODAY']='今日';
                      // date formats
                      Calendar._TT['DEF_DATE_FORMAT']='Y-mm-dd';
                      Calendar._TT['TT_DATE_FORMAT']='%m月%d日(%a)';
                      Calendar._TT['WK']='週';
                      Calendar._TT['TIME'] = '時間:';
                      Calendar._TT['WEEKEND'] = '0,6';
                      Calendar._TT['DAY_FIRST'] = '%sを最初に表示;';
                      Calendar._FD = 0;

I got some help from this  website:http://www.koders.com/javascript/fidAF34A3E6CAF52EC39A7950E2786B936DB2439702.aspx?s=calendar.

And Now Mark it .

Last Modified Date: 5/2/2006
Version: 1.2.5000.13

Public Properties:
-

Set column-level properties for editor in CustomEditorProperties using WebGrid.NET Designer.

Features and behavior:
- Own key handler.
- No base editor.
- Full OOP and implemented advanced interface
- Support WebGrid.NET Enterprise 4.0

Dependencies:
-Shared\ISCore.jse (WebUI.NET Client Framework)
-WebInput\*.jse (WebInput Core Scripts)
*/

// Implementation object for WebInput.NET which contains set of required methods for custom editor interface.
// Format: CustomEditorName_Editor()
function WebInputNET_Editor()
{

 // #Start required interface implementation

 // Fired on WebGrid's initialization
 // Put codes to initialize custom editor's properties and create necessary objects here
 this.OnInitialize = function()
 {
 };

 // Initialize the WebInput only once
 this._Initialize = function()
 {
  var textEditor = this.GetTextEditor();
  var htmlObj = textEditor.HtmlObj;

  if (!textEditor._IsInitialized)
  {
   var grid = this.CustomEditor.Grid;
   var wi = this.GetTextEditorFrame();
   textEditor.HandleTab = true;
   Listener.Remove(htmlObj, "onkeydown", WIOnKeyDown_v1);
       Listener.Append(0, htmlObj, "onbeforedeactivate", WebInputNET_DeActivate);
       if (typeof(wgEditCtlKBHandler) == "function")
        Listener.Append(0, htmlObj, "onkeydown", function() {wgEditCtlKBHandler(grid, "WebInputNET"); WIOnKeyDown_v1(); WebInputNET_Keydown();});
       else
        Listener.Append(0, htmlObj, "onkeydown", function() {grid.EditKeyboardHandler("WebInputNET"); WIOnKeyDown_v1(); WebInputNET_Keydown();});
       
   Listener.Append(0, htmlObj, "onselectstart", function() {event.cancelBubble = true; event.returnValue = true; return true});
   grid.FrameObj.insertAdjacentElement("beforeEnd", wi);
   
   if (textEditor.DisplayFormat)
   {
    var _ctl = document.getElementById(textEditor.DisplayFormat.WindowInfo.ControlID);
    if (_ctl)
    {
     grid.FrameObj.insertAdjacentElement("beforeEnd", _ctl);
    }
   }
   
   if (textEditor.EditFormat)
   {
    var _ctl = document.getElementById(textEditor.EditFormat.WindowInfo.ControlID);
    if (_ctl)
    {
     grid.FrameObj.insertAdjacentElement("beforeEnd", _ctl);
    }
   
   }
   
   var ev = textEditor.Events;
   if (!ev) ev = new Object();
   if (!ev.OnDirty) ev.OnDirty = "";
   if (ev.OnDirty != "") ev.OnDirty += ";";
   
   ev.OnDirty += "WebInputNET_OnDirty('" + grid.Name + "')";
   
   textEditor.Events = ev;
   textEditor._IsInitialized = true;
  }
 };

 this.OnUnload = function()
 {
  var textEditor = this.GetTextEditor();
      Listener.Remove(textEditor.HtmlObj, "onbeforedeactivate", WebInputNET_DeActivate);
     Listener.Remove(textEditor.HtmlObj, "onkeydown", WebInputNET_Keydown);
 };

 // Fired when the control is entering edit mode
 // You can set default editor properties in this event
 this.OnEnterEditMode = function(activeCell, columnXml, isDirty)
 {

  this._Initialize();

  // use built-in WebGrid function to display the control
  var textEditorFrame = this.GetTextEditorFrame();

  wgDispObjGeneric(this.Grid, textEditorFrame, activeCell.element, 0, 1, false);

  // apply column-based editor properties if any
  this.SetProperties();

  // you should return the base editor element if any
  // otherwise, return the dropdown object

  var textEditor = this.GetTextEditor();
  
  if (textEditor.SkipSetValue) return textEditorFrame;
  
  //if (textEditor._WGI==null)
  //{
  // WGI always recreated because same instance can be used in multiple columns.
   var wgi = new Object();
   var dt = null;
   
   if (columnXml.attributes)
    dt = columnXml.attributes.getNamedItem("dataType").text;
   else
    dt = columnXml.DataType;
   
   dt = dt.replace("System.", "").toLowerCase();
   switch(dt)
   {
    case "single" :
    case "float" :
    case "double" :
    case "decimal" :
    case "sbyte" :
    case "byte" :
    case "short" :
    case "ushort" :
    case "int" :
    case "uint" :
    case "long" :
    case "ulong" :
    case "int16" :
    case "int32" :
    case "int64" :
    case "uint16" :
    case "uint32" :
    case "uint64" : wgi.dataType = "number"; break;
    default : wgi.dataType = dt;
   }

   if (columnXml.attributes)
    wgi.dataFormat = columnXml.attributes.getNamedItem("dataFormat").text;
   else
    wgi.dataFormat = columnXml.DataFormatString;

   if (wgi.dataType=="datetime")
   {
    var dti = textEditor.CultureInfo.DateTimeFormatInfo;
    if (wgi.dataFormat==null || wgi.dataFormat=="")
     wgi.dataFormat = dti.StandarFormat.GeneralLongTime;
    else
    {
     if (wgi.dataFormat.length==1) wgi.dataFormat = GetFullFormatDate(dti, wgi.dataFormat);
    }
   }

               textEditor._WGI = wgi;

  textEditorFrame.setActive();
  textEditor.DoFocus();
  textEditor.isDirty = false;
  textEditor.HtmlObj.isDirty = false;

  return textEditorFrame;
 };

 // Fired when the control is about to be displayed during enter edit mode.
 // The value of the editor need to be set to reflect current cell's text.
 this.OnSetValue = function(text, activeCell)
 {
  if (!this.ControlCreated) return false;

  var textEditor = this.GetTextEditor();
  if (textEditor.SkipSetValue) return;

  textEditor.isDirty = false;

  if (text == " ") text = "";

  var wgi = textEditor._WGI;
  var df = textEditor.DisplayFormat;
  var ef = textEditor.EditFormat;
  var dyf = textEditor.DynamicEditFormat;
  
  wgi.OldValue = text;

  if (df!=null || ef!=null || dyf!=null)
  {
   var ve = IS.GetValidationEngine();

   if (wgi.dataType=="datetime")
   {
    var cd = df!=null ? df.ClientData : ef.ClientData;
    with(cd)
    {
     Type = "DateTime";
     Format = wgi.dataFormat;
     OldValue = NewValue = text;
     PromptChar = null;
     IsValid = true;
    }
    ve.Validate(cd, textEditor.CultureInfo);
    var wgf = wgi.dataFormat;
    var dd = cd.DateData;
    if (wgf.indexOf("h")<0 && wgf.indexOf("H")<0) dd.Hour24 = dd.Hour12 = 1;
    if (wgf.indexOf("m")<0) dd.Minute = 0;
    if (wgf.indexOf("s")<0) dd.Second = 0;

    if ((wgf.indexOf("h")<0 && wgf.indexOf("H")<0) && wgf.indexOf("m")<0 && wgf.indexOf("s")<0)
                    {
                     with(cd)
         {
                          Format = textEditor.CultureInfo.DateTimeFormatInfo.StandarFormat.ShortDate;
      OldValue = NewValue = IS.GetCommonDateFormat(dd.Day, parseFloat(dd.Month)+1, dd.Year);
             }
    }
    else
    {
     var d = new Date(dd.Year, dd.Month, parseFloat(dd.Day), dd.Hour24, dd.Minute, dd.Second, dd.Fraction);
         var v = d.toDateString() + " " + d.toTimeString();
         with(cd)
         {
          Format = textEditor.CultureInfo.DateTimeFormatInfo.StandarFormat.GeneralLongTime;
                      OldValue = NewValue = v.substr(0, v.indexOf("UTC")-1);
     }
    }

    cd.IsValid = true;
    ve.Validate(cd, textEditor.CultureInfo);
    textEditor.Value = cd.FormattedValue;
   }
   else
   {
    if (wgi.dataType=="number")
    {
                     var cd = df!=null ? df.ClientData : (ef!=null ? ef.ClientData : dyf.ClientData);
     with(cd)
     {
      Type = "Number";
      Format = wgi.dataFormat;
      OldValue = NewValue = text;
      PromptChar = null;
      IsValid = true;
     }
     textEditor.Value = ve.UnMask(cd, textEditor.CultureInfo);
    }
    else
    {
     if (wgi.dataType=="string" && ef!=null)
     {
      textEditor.Text = textEditor.EditText = textEditor.Value = textEditor.HtmlObj.value = textEditor.EditFormat.ParseRawText(text);
     }
    }
   }
  }
  else
              textEditor.Text = textEditor.Value = text;

  if (textEditor.EditFormat==null)
  {
   textEditor.SetValueData(textEditor.Value);
  }
  else
  {
   var ef = textEditor.EditFormat;
   textEditor.EditText = textEditor.GetEditText();
   textEditor.SetValueData(textEditor.EditText);
  }

 };

 // Fired when the editor's content is changed.
 this.OnDirty = function() {
  var textEditor = this.GetTextEditor();
  textEditor.isDirty = true;
  this._GetLastEditCell().cellModified = true;
 };

 // Fired when the editor is about to exit edit mode
 this.OnExitEditMode = function(isCancel)
 {
  var textEditorFrame = this.GetTextEditorFrame();

  if (textEditorFrame && textEditorFrame.style.display != "none")
  {
   var te = this.GetTextEditor();
   te.DoLastBlur();
   te.HtmlObj.isActive = false;

   textEditorFrame.style.display = "none";

   if (isCancel)
   {
    if (!this.CustomEditor.IsRowDirty())
     this.OnCancel();
   } else
   {
    if (te.HtmlObj.isDirty || te.IsDirty)
    {
     this.OnDirty();
     var isValid = this.OnValidate();
     if (!isValid)
     {
      var curGrid = this.Grid;
      var activeCellElement = this.Grid.getLastEditObject().cellElement;
      var wi = te.EditFormat.WindowInfo;
      
      textEditorFrame.style.display = "";
      
      setTimeout(function()
      {
       // reactivate current edit object
       te.SkipSetValue = true;

       wgHighlightEditCell(activeCellElement);
       wgActivateEditMode(curGrid);
       textEditorFrame.setActive();
       te.SetFocus();

       te.SkipSetValue = false;
      }
      , 50
      );
      
      setTimeout(function()
      {
       // reshow error info
       WindowEngine.Show(wi);
       te.IsDirty = true;
      },
      500
      );
     }
     return isValid;
    }
   }
  }

  return true;
 };

 // Fired when the changes in editor is applied/accepted
 this.OnApply = function()
 {
  // not used in WebInput
 };

 // Fired when user cancel the changes in editor
 // by pressing Escape in editor or entire row changes cancel.
 this.OnCancel = function()
 {
  var textEditorFrame = this.GetTextEditorFrame();
        textEditorFrame.style.display = "none";

 };

 // Fired when the cell is about to exit edit mode
 // When the validation result is true, it will process to exit edit mode.
 this.OnValidate = function(activeCellElement)
 {
  var textEditor = this.GetTextEditor();
  var wgi = textEditor._WGI;
  var df = textEditor.DisplayFormat;
  var ef = textEditor.EditFormat;
  var dyf = textEditor.DynamicEditFormat;
  var isValid = false;
  if (ef)
  {
   var omv = document.getElementById(textEditor.Id + IS.MaskValidatorSuffix);
   isValid = MaskValidatorEvaluateIsValid(omv);
  }
  else
  {
   if (dyf)
   {
    var omv = document.getElementById(textEditor.Id + IS.MaskValidatorSuffix);
    isValid = DynamicMaskValidatorEvaluateIsValid(omv);
   }
   else
   {
    if (df)
    {
     var omv = document.getElementById(textEditor.Id + IS.FormatValidatorSuffix);
     isValid = FormatValidatorEvaluateIsValid(omv);
    }
   }
  }
  return isValid;
 };

 // Fired when user type on keyboard (only for customeditor that has baseeditor)
 this.OnKeyDown = function(keyCode)
 {
 };

 // Fired when dropdown button is clicked
 // Not used in WebInput
 this.OnDropdown = function()
 {
 };

 // Required method to get base editor element
 // Put codes to get the base editor element
 this.GetBaseEditorElement = function()
 {
  return this.GetTextEditorFrame();
 };

 // Required method to get dropdown button element
 // Put codes here to get the dropdown button element
 this.GetDropdownButtonElement = function()
 {
  return null;
 };

 // Required method to get dropdown list object
 this.GetDropdownObject = function()
 {
  return null;
 };

 // Required method to get the IsDirty status of the editor
 this.IsDirty = function()
 {
  var textEditor = this.GetTextEditor();
  return textEditor.isDirty;
 };

 // Required method to get the content of the editor
 this.GetText = function()
 {
  // always return originalText since we dont want to update to cell content
  // unless Update button in WebInput.NET is clicked.
  var textEditor = this.GetTextEditor();
  var wgi = textEditor._WGI;
  var df = textEditor.DisplayFormat;
  var ef = textEditor.EditFormat;
  var dyf = textEditor.DynamicEditFormat;

  if (!textEditor.isDirty)
  {
   // not edited at all
   return wgi.OldValue;
  }

  if (df!=null || ef!=null || dyf!=null)
  {
   var ve = IS.GetValidationEngine();

   if (wgi.dataType=="datetime")
   {
    var cd = df!=null ? df.ClientData : ef.ClientData;
    var dd = cd.DateData;
    var wgf = wgi.dataFormat;
    if (wgf.indexOf("h")<0 && wgf.indexOf("H")<0) dd.Hour24 = dd.Hour12 = 0;
    if (wgf.indexOf("m")<0) dd.Minute = 0;
    if (wgf.indexOf("s")<0) dd.Second = 0;
        var d = new Date(dd.Year, dd.Month, parseFloat(dd.Day), dd.Hour24, dd.Minute, dd.Second, dd.Fraction);
        var v = d.toDateString() + " " + d.toTimeString();
    v = v.substr(0, v.indexOf("UTC")-1);
    with(cd)
    {
     Type = "DateTime";
     Format = wgi.dataFormat;
     OldValue = NewValue = v;
     PromptChar = null;
     IsValid = true;
    }
    if (ve.Validate(cd, textEditor.CultureInfo))
     return cd.FormattedValue;
    else
     return textEditor.Text;
   }
   else
   {
    if (wgi.dataType=="number")
    {
                     var cd = df!=null ? df.ClientData : (ef!=null ? ef.ClientData : dyf.ClientData);
     with(cd)
     {
      Type = "Number";
      Format = wgi.dataFormat;
      OldValue = NewValue = textEditor.Value;
      PromptChar = null;
      IsValid = true;
     }
     if (ve.Validate(cd, textEditor.CultureInfo))
      return cd.FormattedValue;
     else
      return textEditor.Text;
    }
    else
    {
     if (wgi.dataType=="string" && ef!=null)
     {
      return textEditor.EditText.replace(new RegExp(ef.MaskInfo.PromptChar, "g"), " ");
     }
    }
   }
  }
  return textEditor.Text;
 };

 // Required method to get the value of the editor
 // Only useful when editor value is differ then content/text such as in Dropdownlist.
 this.GetValue = function()
 {
  // since this editor has same value and content,
  // simply return the text
  return this.GetText();
 };

 // Required method to apply editor properties defined in Column's CustomEditorProperties
 this.SetProperties = function()
 {
  var props = this.CustomEditor.GetColumnEditorProperties();
  var aProps = props.split(";");
  for (var i=0; i<aProps.length; i++)
  {
   this.SetProperty(aProps[i].split("=")[0], aProps[i].split("=")[1]);
  }
 };
 
 
 // Indicates whether default behavior of exit edit mode should be processed
 // This method is optional.
 this.ShouldProcessExitEditModeDefaultBehavior = function()
 {
  return true;
 };
 
 // Indicates the cell's content mode
 // This method is optional.
 this.GetContentMode = function()
 {
  // valid value is "Text" or "HTML"
  // if this method is not implemented, the default is Text.
  return "Text";
 };
 
 // #End interface implementation

 // #Start required properties
 
 this.Grid = null;
 this.CustomEditor = null;
 this._IsInitialized = false;
 
 // #End properties
 
 // #Start WebInput.NET editor functions
 this.DDBtn = null;
 this.ControlName = "WebInput.NET";
 this.OriginalText = "";
 this.ControlCreated = true;
 
 // Required method to apply individual property
 this.SetProperty = function(propName, propValue)
 {

  
 };

 // Method to initialize dropdown object (rich textbox server control)
 this.InitializeDropdownObject = function()
 {
  return true;
 };

 this.GetTextEditor = function()
 {
  var controlID = this._GetLastEditorClientID();
  var editor = IS.GetRuntimeObjectById(controlID);
  
  if (controlID.indexOf("$") > -1 && editor == null)
  {
      for (var i=0; i<IS.RuntimeObjects.length; i++)
      {
          if (IS.RuntimeObjects[i].ServerUniqueID == controlID)
          {
              editor = IS.RuntimeObjects[i];
              break;
          }
      }
  }
  editor.CustomEditor = this;
  return editor;
 };

 this.GetTextEditorFrame = function()
 {
  var controlID = this._GetLastEditorClientID();
  var editorF = document.getElementById(controlID + IS.FrameSuffix);

  return editorF;
 };

 this.GetContentCell = function()
 {
  var rowEl = this.CustomEditor.GetEditRowElement();
  if (wgIsRecordRow(rowEl))
  {
   // if row type is record
   return this.CustomEditor.GetEditCellElement();
  }
  else
  {
   // row type is either newrow or filterrow
   return this.CustomEditor.GetEditCellElement();
  }
 };

 this._GetLastEditCell = function()
 {
  if (this.Grid.LastEditObj)
   return this.Grid.LastEditObj.cellElement;
  else
   return this.CustomEditor.GetEditCellElement();
 };
 
 this._GetColumnXml = function()
 {
  var table = this.CustomEditor.GetTable();
  var name = wgGetColNameByCell(this._GetLastEditCell());
  var col = null;
  
  try { col = table.getColumn(name); }
  catch(e) { col = table.GetColumn(name); }
  return col;
 };

 this._GetLastEditorClientID = function() {
  var colXml = this._GetColumnXml();
  
  if (colXml.CustomEditorServerID)
  {
      var ServerID = colXml.CustomEditorServerID.replace("$", "_");
      return ServerID;
  }
  
  if (colXml.CustomEditorServerId)
   return colXml.CustomEditorServerId;
  else
   return colXml.getAttribute("ceID");
 };  
 // #End functions
 
return this;
}

function WebInputNET_Keydown()
{
  var c = IS.GetRuntimeObjectById(event.srcElement.id);

 if (c.CustomEditor)
 {
  var keyCode = event.keyCode;

  if (keyCode == 9)
  {
   event.cancelBubble = false;
   event.returnValue = false;
   event.keyCode = 0;
   return false;
  }
 }
 return true;
}

function WebInputNET_DeActivate()
{
 var c = IS.GetRuntimeObjectById(window.event.srcElement.id);
 if (c.CustomEditor)
 {
  if (c.isDirty) c.CustomEditor.OnApply();
 }
 event.returnValue = true;
 return true;
}

function WebInputNET_OnDirty(gridName)
{
 var grid = wgGetGridById(gridName);
 if (typeof(wgMarkEdit) == "function")
  wgMarkEdit(grid);
 else
  grid.MarkEdit();
}

if invoke the function that named DoK2Process() in the same page two times ,the error happen.

  private void DoK2Process(string ProcSN)
    {
        using (TransactionScope trancat = new TransactionScope())
        {
            SourceCode.K2ROM.WorklistItem worklistitem = K2RomWP.GetWorklistItem(ProcSN);
            //To do:worklistitem do something

            //finally
            worklistitem.Finish();
        }
    }

But if you debug to trace this funciton ,it can run successfully.
So First I guess that error occur by TransactionScope delay in disposing.

So I add codes to dispose it and then run it again, i failed again.

And I look through WorklistItem class,found it provide
Finish(bool Sync) function . So I Invoke this function (Finish(True)) in DoK2Process function and run it again.

Bingo,I am right.

there was also  info about this problem i found.

"As I understand, calling the worklistitem.Finish(true) means that the call is made synchronously - meaning the worklist item has been completed by the time the call returns. Otherwise, calling just worklistitem.Finish() means that the call returns before the worklist item is actually finished because the worklistitem is actually finished in a separate thread"

And You also Can  see the whole info  Here :http://k2underground.com/forums/thread/18564.aspx

    今天从同事那看到了一些国际程序实际大赛的作品，不相信如此绚丽画面的3D作品竟然只有几KB-几十kB。惊叹之余，真想在知道到底是用什么语言写的，最后想想估计也只有汇编语言了。

    用汇编语言写出这样的3D画面，还有配乐的程序，真是牛啊，剽悍得一塌啊。

    我想在这种程序最能体现： 算法是程序的灵魂。

    如果你还未欣赏这里可以下载：

    国际程序设计大赛的作品欣赏