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POAutocomplete in WebService using LINQ
 

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  1. POAutocomplete in WebService using LINQ
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    <p>I am using Autocomplete using web service. And in my web service I am using LDS.</p> <p>The problem is that when I am trying this code:</p> <p>This is my UI code which is calling the webservice in Default.aspx:</p> <pre><code>&lt;asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"&gt; &lt;Services&gt; &lt;asp:ServiceReference Path ="WebService1.asmx" /&gt; &lt;/Services&gt; &lt;/asp:ToolkitScriptManager&gt; &lt;asp:TextBox ID="TextBox1" runat="server"&gt;&lt;/asp:TextBox&gt; &lt;asp:AutoCompleteExtender ID="TextBox1_AutoCompleteExtender" runat="server" DelimiterCharacters="" Enabled="True" ServicePath ="WebService1.asmx" ServiceMethod="ReturnEntity" EnableCaching="true" TargetControlID="TextBox1" CompletionSetCount ="1"&gt; &lt;/asp:AutoCompleteExtender&gt; </code></pre> <p>This is my WebService file (webservice1.asmx)</p> <pre><code> [WebMethod] public string[] ReturnEntity(string prefixText, int count) { List&lt;string&gt; responses = new List&lt;string&gt;(); for (int i = 0; i &lt; count; i++) responses.Add(prefixText + (char)(i + 65)); return responses.ToArray(); } </code></pre> <p>Then is it working. However, I am working on this code and it is NOT working...</p> <pre><code> [WebMethod] public string[] ReturnEntity(string prefixText) { using (DataClasses1DataContext search = new DataClasses1DataContext()) { string[] fullText = (from n in search.Entities where n.Name.StartsWith(prefixText) select n.Name).ToArray(); return fullText; } } </code></pre> <p>When I am trying to run the webservice in the browser itself and passing some parameters then it is showing me these:</p> <pre><code> &lt;?xml version="1.0" encoding="utf-8" ?&gt; - &lt;ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/"&gt; &lt;string&gt;Starr&lt;/string&gt; &lt;string&gt;Sally Jeans&lt;/string&gt; &lt;string&gt;Steven Kline&lt;/string&gt; &lt;string&gt;Steven Goldberg&lt;/string&gt; &lt;/ArrayOfString&gt; </code></pre> <p>This is not returning any results. I just want to show listings from my table which is Entities, and the column name is 'Name'.</p> <p>Cannot figure it out :(</p>
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    1. COHave you tried calling that method (using the DataContext) outside of using autocomplete? My best guess is that your query is not returning any results. Try using sql server profiler to determine the query your call is sending to the database, then see what happens if you execute that query in sql server management studio.
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      1. USeoldre
    2. CO@eoldre: When viewing the web service file in the browser, I can see the results right there in an XML format. So I am assuming that it is pulling from the DB.
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    3. CO@DOT-NET I'm sorry, what results? If they are in the browser, what do you mean by "not returning any results"?
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      1. USR. Martinho Fernandes
 

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