ASP.NET程式中常用代碼匯總（五）

41.判斷是否為數字

{
this.style.display='none'; Codehighlighter1_1_129_Open_Text.style.display='none'; Codehighlighter1_1_129_Closed_Image.style.display='inline'; Codehighlighter1_1_129_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_1_129_Closed_Text.style.display='none'; Codehighlighter1_1_129_Open_Image.style.display='inline'; Codehighlighter1_1_129_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" align="top"> /**//// <summary> 
 /// 名稱：IsNumberic 
 /// 功能：判斷輸入的是否是數字 
 /// 參數：string oText：源文本 
 /// 傳回值：　bool true:是　false:否 
 /// </summary> 
  
 public bool IsNumberic(string oText) 
{
this.style.display='none'; Codehighlighter1_173_286_Open_Text.style.display='none'; Codehighlighter1_173_286_Closed_Image.style.display='inline'; Codehighlighter1_173_286_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_173_286_Closed_Text.style.display='none'; Codehighlighter1_173_286_Open_Image.style.display='inline'; Codehighlighter1_173_286_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" align="top"> { 
  try 
{
this.style.display='none'; Codehighlighter1_185_245_Open_Text.style.display='none'; Codehighlighter1_185_245_Closed_Image.style.display='inline'; Codehighlighter1_185_245_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_185_245_Closed_Text.style.display='none'; Codehighlighter1_185_245_Open_Image.style.display='inline'; Codehighlighter1_185_245_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">  { 
   int var1=Convert.ToInt32 (oText); 
   return true; 
  } 
  catch 
{
this.style.display='none'; Codehighlighter1_259_282_Open_Text.style.display='none'; Codehighlighter1_259_282_Closed_Image.style.display='inline'; Codehighlighter1_259_282_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_259_282_Closed_Text.style.display='none'; Codehighlighter1_259_282_Open_Image.style.display='inline'; Codehighlighter1_259_282_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">  { 
   return false; 
  } 
 } 

 獲得字串實際長度（包括中文字元） 

 //獲得字串oString的實際長度 
 public int StringLength(string oString) 
{
this.style.display='none'; Codehighlighter1_376_494_Open_Text.style.display='none'; Codehighlighter1_376_494_Closed_Image.style.display='inline'; Codehighlighter1_376_494_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_376_494_Closed_Text.style.display='none'; Codehighlighter1_376_494_Open_Image.style.display='inline'; Codehighlighter1_376_494_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" align="top"> { 
  byte[] strArray=System.Text .Encoding.Default .GetBytes (oString); 
  int res=strArray.Length ; 
  return res; 
 } 

42.將斷行符號轉換為TAB //當在有keydown事件的控制項上敲斷行符號時，變為tab 
 public void Tab(System.Web .UI.WebControls .WebControl webcontrol) 
{
this.style.display='none'; Codehighlighter1_100_190_Open_Text.style.display='none'; Codehighlighter1_100_190_Closed_Image.style.display='inline'; Codehighlighter1_100_190_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_100_190_Closed_Text.style.display='none'; Codehighlighter1_100_190_Open_Image.style.display='inline'; Codehighlighter1_100_190_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" align="top"> { 
  webcontrol.Attributes .Add ("onkeydown", "if(event.keyCode==13) event.keyCode=9"); 
 } 

43.datagrid分頁中如果刪除時出現超出索引 public void jumppage(System.Web.UI.WebControls.DataGrid dg) 
{
this.style.display='none'; Codehighlighter1_62_615_Open_Text.style.display='none'; Codehighlighter1_62_615_Closed_Image.style.display='inline'; Codehighlighter1_62_615_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_62_615_Closed_Text.style.display='none'; Codehighlighter1_62_615_Open_Image.style.display='inline'; Codehighlighter1_62_615_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" align="top"> { 
  int int_PageLess; //定義頁面跳轉的頁數 
  //如果當前頁是最後一頁 
  if(dg.CurrentPageIndex == dg.PageCount-1) 
{
this.style.display='none'; Codehighlighter1_161_611_Open_Text.style.display='none'; Codehighlighter1_161_611_Closed_Image.style.display='inline'; Codehighlighter1_161_611_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_161_611_Closed_Text.style.display='none'; Codehighlighter1_161_611_Open_Image.style.display='inline'; Codehighlighter1_161_611_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">  { 
   //如果就只有一頁 
   if(dg.CurrentPageIndex == 0) 
{
this.style.display='none'; Codehighlighter1_214_284_Open_Text.style.display='none'; Codehighlighter1_214_284_Closed_Image.style.display='inline'; Codehighlighter1_214_284_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_214_284_Closed_Text.style.display='none'; Codehighlighter1_214_284_Open_Image.style.display='inline'; Codehighlighter1_214_284_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">   { 
    //刪除後頁面停在當前頁 
    dg.CurrentPageIndex = dg.PageCount-1;    
   } 
   else 
{
this.style.display='none'; Codehighlighter1_299_606_Open_Text.style.display='none'; Codehighlighter1_299_606_Closed_Image.style.display='inline'; Codehighlighter1_299_606_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_299_606_Closed_Text.style.display='none'; Codehighlighter1_299_606_Open_Image.style.display='inline'; Codehighlighter1_299_606_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">   { 
    //如果最後一頁只有一條記錄 
    if((dg.Items.Count % dg.PageSize == 1) || dg.PageSize == 1) 
{
this.style.display='none'; Codehighlighter1_391_455_Open_Text.style.display='none'; Codehighlighter1_391_455_Closed_Image.style.display='inline'; Codehighlighter1_391_455_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_391_455_Closed_Text.style.display='none'; Codehighlighter1_391_455_Open_Image.style.display='inline'; Codehighlighter1_391_455_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">    { 
     //把最後一頁最後一條記錄刪除後，頁面應跳轉到前一頁 
     int_PageLess = 2; 
    } 
    else      //如果最後一頁的記錄數大於1，那麼在最後一頁刪除記錄後仍然停在當前頁 
{
this.style.display='none'; Codehighlighter1_513_544_Open_Text.style.display='none'; Codehighlighter1_513_544_Closed_Image.style.display='inline'; Codehighlighter1_513_544_Closed_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align="top">{
this.style.display='none'; Codehighlighter1_513_544_Closed_Text.style.display='none'; Codehighlighter1_513_544_Open_Image.style.display='inline'; Codehighlighter1_513_544_Open_Text.style.display='inline';
}" alt="" src="http://ghd258.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align="top">    { 
     int_PageLess = 1; 
    } 
    dg.CurrentPageIndex = dg.PageCount - int_PageLess; 
   } 
  } 
 }