Convert 12 Hour format to 24 Hour Format asp.net C#

12 to 24

   private string ConvertTo24HourFormat(string strTime)  //HH:MM AM/PM
   {  
     string FinalTime=string.Empty;  
     if (!string.IsNullOrEmpty(strTime))  
     {  
       try  
       {  
         string[] InTime = strTime.Split(':');  
         int h = Convert.ToInt32(InTime[0].ToString());  
         string[] AMPM = InTime[1].Split(' ');  
         if (AMPM[1].ToString() == "PM")  
         {  
           h += 12;  
         }  
         if (AMPM[1].ToString() == "AM" && h.ToString()=="12")  
         {  
           h = 00;  
         }  
         FinalTime = h + ":" + InTime[1];  
         //if(h>  
       }  
       catch (Exception) { }  
     }  
     return FinalTime;  
   }  

24 to 12

  private string ConvertTo12HourFormat(string strTime)  //HH:MM AM/PM
   {  
     string FinalTime = string.Empty;  
     if (!string.IsNullOrEmpty(strTime))  
     {  
       try  
       {  
         string[] InTime = strTime.Split(':');  
         int h = Convert.ToInt32(InTime[0].ToString());  
         string[] AMPM = InTime[1].Split(' ');  
         if (AMPM[1].ToString() == "PM")  
         {  
           h -= 12;  
         }  
         if (AMPM[1].ToString() == "AM" && h.ToString() == "00")  
         {  
           h = 12;  
         }  
         FinalTime = h + ":" + InTime[1];  
         //if(h>  
       }  
       catch (Exception) { }  
     }  
     return FinalTime;  
   }  

Fire event on enter key press for a textbox

ASPX:

 <asp:TextBox ID="TextBox1" clientidmode="Static" runat="server" onkeypress="return EnterEvent(event)"></asp:TextBox>    
 <asp:Button ID="Button1" runat="server" style="display:none" Text="Button" />  

JS:
 

 function EnterEvent(e) {  
     if (e.keyCode == 13) {  
       __doPostBack('<%=Button1.UniqueId%>', "");  
     }  
   }  

CS:

 protected void Button1_Click1(object sender, EventArgs e)  
   {  
   }