Error message Problem RSS

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  NewProgramer

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  Error message Problem

  Nov 19, 2011 02:43 AM|LINK

  hi

  try
  
   Catch ex As Exception
              If Err.Number <> 0 Then msgbox(ex.Message, MsgBoxStyle.Critical)
              Exit Sub
          End Try

  its work fine But i want to show this with ajax like this. 

  try
  
   Catch ex As Exception
              If Err.Number <> 0 Then DisplayAJAXMessage(Me, ex.Message.ToString)
              Exit Sub
          End Try
  
   Sub DisplayAJAXMessage(ByVal page As Control, ByRef Message As String)
          Dim myScript As String = ("alert('" & Message & "');")
          ScriptManager.RegisterStartupScript(page, page.GetType(), "MyScript", myScript, True)
  
      End Sub

  But its Not working. tell me what is the problem of this code. Please Help

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  patricgreat

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  Re: Error message Problem

  Nov 19, 2011 03:18 AM|LINK

  its looking perfect but still try using a different control(instead of page) which is inside updatepanel instead of page.

  ScriptManager.RegisterStartupScript(control, control.GetType(), "MyScript", myScript, True)
  
  

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  NewProgramer

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  Re: Error message Problem

  Nov 19, 2011 03:33 AM|LINK

  thanks but sory to say i could'nt understand. can you explain through code or some example?

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  patricgreat

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  Re: Error message Problem

  Nov 19, 2011 03:44 AM|LINK

  ok, this is just my thought :) i am not sure if it will work or not but please make a try :)

   you must be using updatepanel in your aspx page. lets assume that you have some button name myControl inside updatepanel.

   

  try 
   
   Catch ex As Exception 
              If Err.Number <> 0 Then DisplayAJAXMessage(myControl, ex.Message.ToString) 
              Exit Sub 
          End Try 
   
   Sub DisplayAJAXMessage(ByVal myCon As Button, ByRef Message As String) 
          Dim myScript As String = ("alert('" & Message & "');") 
          ScriptManager.RegisterStartupScript(myCon,myCon.GetType(), "MyScript", myScript, True) 
   
      End Sub

   

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  NewProgramer

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  232 Posts

  Re: Error message Problem

  Nov 19, 2011 04:03 AM|LINK

  it was looking right code but i have try this and also check with break point. its running right But message did not display in application. You can check it. 

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  patricgreat

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  Re: Error message Problem

  Nov 19, 2011 11:38 AM|LINK

  if possible can you please paste your aspx code? how r u using ajax?

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  NewProgramer

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  Re: Error message Problem

  Nov 21, 2011 02:42 AM|LINK

  i was paste my aspx code in my first post. its my Code and when i use it in simple message then it works fine. for example.

  Sub DisplayAJAXMessage(ByVal page As Control, ByRef Message As String)
          Dim myScript As String = ("alert('" & Message & "');")
          ScriptManager.RegisterStartupScript(page, page.GetType(), "MyScript", myScript, True)
      End Sub
  
  Protected Sub cmdUpdate_Click(ByVal sender As Object, ByVal e As System.EventArgs)
  DisplayAJAXMessage(cmdUpdate, "My Message")
  end sub

  But when i use this code it do not work. and no one error comes. 

   Protected Sub cmdUpdate_Click(ByVal sender As Object, ByVal e As System.EventArgs)
  
   Try
  
               UpdateTable("Update BankDetail set AccountNo='" & txtAccountNo.Text & "' , " & _
              "Cno='" & txtBankCNo.Text & "', " & _
              "AccountID='" & cmbAccountID2.Text & "', " & _
              "BankName='" & txtBankName.Text & "', " & _
              "BankAddress='" & txtBankAddress.Text & "', " & _
              "City='" & txtCity.Text & "', " & _
              "ShortName='" & txtShortName.Text & "' where BNo='" & txtUpdate.Text & "'")
  
             
          Catch ex As Exception
              If Err.Number <> 0 Then DisplayAJAXMessage(cmdUpdate, ex.Message.ToString)
              Exit Sub
          End Try

  End Sub

  Public Function UpdateTable(ByVal Query As String)
          With obj
              .cn = GetConnection()
              .comm.CommandText = ""
              .comm.Connection = .cn
              .comm.CommandType = Data.CommandType.Text
              .comm.CommandText = Query
              .comm.CommandTimeout = 0
              .comm.ExecuteNonQuery()
              .cn.Close()
          End With
      End Function 

  • Edited by NewProgramer on Nov 21, 2011 02:43 AM
  • Edited by NewProgramer on Nov 21, 2011 02:48 AM
  • Edited by NewProgramer on Nov 21, 2011 02:49 AM
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  NewProgramer

  Member

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  232 Posts

  Re: Error message Problem

  Nov 21, 2011 03:19 AM|LINK

  and i also want to explane that when i use this code. 

  Catch ex As Exception
              If Err.Number <> 0 Then DisplayAJAXMessage(cmdUpdate, ex.Message.ToString)
              Exit Sub
          End Try

  it doesn't work. no message display in run time. But when i use this

   Catch ex As Exception
              If Err.Number <> 0 Then DisplayAJAXMessage(cmdUpdate, "any Message")
              Exit Sub
          End Try

  then its work perfect. 

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  patricgreat

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  Re: Error message Problem

  Nov 21, 2011 03:48 AM|LINK

  means if you are using static message its working and if you are using ex.Message its not working?? may be you can check your ex.Messge in debug mode and make sure its not containing any ' single quotatin mark(')

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  NewProgramer

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  232 Posts

  Re: Error message Problem

  Nov 21, 2011 05:43 AM|LINK

  yes when i debug that code ex.message display. But in web page it does not display.