AUTOCOMPLETE扩展器

Question

我正在尝试在我的项目中使用自动完成扩展程序，但它无法正常工作，我使用的是Vs2008 .net framework 3.5 并且它给了我网格视图分页的错误，该源不可用 这是我的.aspx代码

<asp:TextBox ID="txtsearch" runat="server" Width="158px" CssClass="text"
     Height="22px" ontextchanged="txtsearch_TextChanged"/>

 <cc1:AutoCompleteExtender ID="AutoCompleteExtender1" runat="server" 
    ServiceMethod="GetFilterCategoryName" CompletionSetCount="1" CompletionInterval="10" 
    EnableCaching="true" MinimumPrefixLength="1" TargetControlID="txtsearch" 
    UseContextKey="true">
 </cc1:AutoCompleteExtender>

这是我的Axpx.cs代码

[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod()]
public static List<string> GetFilterCategoryName(string prefixText)
{
   SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["MainConnStr"].ConnectionString);
   conn.Open();
   SqlCommand cmd = new SqlCommand("select Question from quick_search where Question like @Name+'%'", conn);
   cmd.Parameters.AddWithValue("@Name", prefixText);
   SqlDataAdapter da = new SqlDataAdapter(cmd);
   DataTable dt = new DataTable();
   da.Fill(dt);
   List<string> answer = new List<string>();
   for (int i = 0; i < dt.Rows.Count; i++)
   {
       answer.Add(dt.Rows[i][1].ToString());
    }
    return answer;
}    

Answer 1

将脚本管理器添加到aspx文件中。

试试这个

<asp:ScriptManager ID="ScriptManager1" runat="server" EnablePageMethods = "true"></asp:ScriptManager>

<asp:TextBox ID="txtsearch" runat="server" Width="158px" CssClass="text"               Height="22px" ontextchanged="txtsearch_TextChanged"/>

<cc1:AutoCompleteExtender ServiceMethod="GetFilterCategoryName" 
    MinimumPrefixLength="1"
    CompletionInterval="0" EnableCaching="false" CompletionSetCount="10" 
    TargetControlID="txtsearch"
    ID="autoCompleteExtender1" runat="server" FirstRowSelected = "false">
</cc1:AutoCompleteExtender>

COED背后：

[System.Web.Services.WebMethod]
[System.Web.Script.Services.ScriptMethod()]

public static List<string> GetFilterCategoryName(string prefixText)
{
   SqlConnection conn = new sqlConnection(ConfigurationManager.ConnectionStrings["MainConnStr"].ConnectionString);
   conn.Open();
   SqlCommand cmd = new SqlCommand("select Question from quick_search where Question like @Name+'%'", conn);
   cmd.Parameters.AddWithValue("@Name", prefixText);
   SqlDataAdapter da = new SqlDataAdapter(cmd);
   DataTable dt = new DataTable();
   da.Fill(dt);
   List<string> answer = new List<string>();
   for (int i = 0; i < dt.Rows.Count; i++)
   {
     answer.Add(dt.Rows[i][1].ToString());
   }
   return answer;
 }