ASP.NET (VB.NET) Autocomplete AJAX problems.[Answered] RSS

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  clifford.pap...

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  ASP.NET (VB.NET) Autocomplete AJAX problems.

  Apr 12, 2014 07:05 AM|clifford.papworth|LINK

  I am trying to implement an Autocomplete but having problems. Please help.

  i have added the toolkit. I have added these controls

  <asp:ToolkitScriptManager runat="server" ID="SM" />
  <asp:AutoCompleteExtender runat="server" ID="autoComplete" ServiceMethod="GetCompletionList" TargetControlID="TextBox1" CompletionInterval="1000" CompletionSetCount="2" MinimumPrefixLength="1" />
  <asp:TextBox runat="server" ID="TextBox1" />
  

  Firsty, if I click on the control in DESIGN view and click on Add Autocomplete page method. I get an error
  
  Unexpected Error (TargetInvocationException):Exception has been thrown by the target of the invocation......

  It however lets me carry on and created the following code

  Public Function GetCompletionList() As System.String[]
  
  End Function

  So i replace this code with
  
  

  Public Shared Function GetCompletionList(ByVal prefixText As String, ByVal count As Integer, ByVal contextKey As String) As String()
          ' Create array of movies  
          Dim movies() As String = {"Star Wars", "Star Trek", "Superman", "Memento", "Shrek", "Shrek II"}
  
          ' Return matching movies  
          Return (
              From m In movies
              Where m.StartsWith(prefixText, StringComparison.CurrentCultureIgnoreCase)
              Select m).Take(count).ToArray()
  End Function

  I then run the website, but when I star typing Star Wars in the txt box, nothing happens. I put a debug break at the Dim in the above code but the debugger does not stop thus meaning that this code is not even being run. I thought that if I could at least get it run this code then I could have a good go at debugging myself but the fact that it does not even hit this code means that is a problem way before this.
  
  Anyone shed any light on this to what the problem may be.....

  Thanks in advance.

  autocomplete ajax ASP.NETAjaxAutocomplete

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  codeasp

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  Re: ASP.NET (VB.NET) Autocomplete AJAX problems.

  Apr 12, 2014 11:17 AM|codeasp|LINK

  Where are you specifying the ServicePath in the AutoCompleteExtender?  Is the GetCompletionList inside a webservice and is decorated as a web method?  Documentation of Autocomplete http://www.asp.net/ajaxlibrary/ajaxcontroltoolkitsamplesite/autocomplete/autocomplete.aspx

  autocomplete ajax ASP.NETAjaxAutocomplete

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  AidyF

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  Re: ASP.NET (VB.NET) Autocomplete AJAX problems.

  Apr 12, 2014 11:42 AM|AidyF|LINK

  According to this

  http://www.asp.net/ajaxlibrary/ajaxcontroltoolkitsamplesite/autocomplete/autocomplete.aspx

  the signature of your GetCompletionList is incorrect, it only supports a string and int, but you have string int string, so remove the contextKey param.  Not sure if that page is out of date or you're using a different version.

  autocomplete ajax ASP.NETAjaxAutocomplete

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