Question

I am using Autocomplete using web service. And in my web service I am using LDS.

The problem is that when I am trying this code:

This is my UI code which is calling the webservice in Default.aspx:

<asp:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server">
    <Services>
    <asp:ServiceReference Path ="WebService1.asmx" />
    </Services>
    </asp:ToolkitScriptManager> 

    <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>

    <asp:AutoCompleteExtender ID="TextBox1_AutoCompleteExtender" runat="server" 
        DelimiterCharacters="" Enabled="True" ServicePath ="WebService1.asmx" ServiceMethod="ReturnEntity" EnableCaching="true"  TargetControlID="TextBox1" CompletionSetCount ="1">
    </asp:AutoCompleteExtender>

This is my WebService file (webservice1.asmx)

 [WebMethod]
    public string[] ReturnEntity(string prefixText, int count)
    {
        List<string> responses = new List<string>();
        for (int i = 0; i < count; i++)
            responses.Add(prefixText + (char)(i + 65));

        return responses.ToArray();
    }

Then is it working. However, I am working on this code and it is NOT working…

 [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;
        }

    }

When I am trying to run the webservice in the browser itself and passing some parameters then it is showing me these:

  <?xml version="1.0" encoding="utf-8" ?> 
- <ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://tempuri.org/">
  <string>Starr</string> 
  <string>Sally Jeans</string> 
  <string>Steven Kline</string> 
  <string>Steven Goldberg</string> 
  </ArrayOfString>

This is not returning any results. I just want to show listings from my table which is Entities, and the column name is ‘Name’.

Cannot figure it out 🙁

Answer 1

Try using StartsWith and pass in a StringComparison

var result = from n in search.Entities
             where n.Name.StartsWith(prefixText, 
                 StringComparison.InvariantCultureIgnoreCase)
             select n.Name;

return result.ToArray();

---

If this is still in the context of call you can use ToLower()

var result = from n in search.Entities
             where n.Name.ToLower().StartsWith(prefixText.ToLower())
             select n.Name;

return result.ToArray();