repopulating CheckBoxList from db table problem

[enginev]

Hi to all,

I have a an checkboxlist control in a webform wich populated from a db table values , DataTextField="interest_name" DataValueField="id"

1       <asp:CheckBoxList ID="interests_CheckBoxList" runat="server" Width="100%" DataSourceID="SqlDataSource1_int" DataTextField="interest_name" DataValueField="id" >
2                        </asp:CheckBoxList><asp:SqlDataSource ID="SqlDataSource1_int" runat="server" ConnectionString="<%$ ConnectionStrings:conn %>"
3                            SelectCommand="SELECT [id], [interest_name] FROM [interests] WHERE ([active] = @active)">
4                            <SelectParameters>
5                                <asp:Parameter DefaultValue="1" Name="active" Type="Byte" />
6                            </SelectParameters>
7                        </asp:SqlDataSource> 

then I have a storedprocedure which takes the selected values and store it to a db table.

Now I want to take these values and repopulate the checkboxlist , I tried to ryn the following function in the page load but something is wrong .. could you please help me how I could do it??

1    public void pop_checkboxes()
2        {
3    
4    
5           
6            string connectionString = ConfigurationManager.ConnectionStrings["conn"].ConnectionString;
7            SqlConnection sqlConnection1 = new SqlConnection(connectionString);
8    
9                    string CommandText1 = "select int_id from user_interests where user_id=1 ";
10   
11          
12           SqlCommand sqlComm1 = new SqlCommand(CommandText1, sqlConnection1);
13           SqlDataReader reader;
14   
15   
16           try
17           {
18   
19               //open connection
20               sqlConnection1.Open();
21               //execute command
22               reader = sqlComm1.ExecuteReader();
23   
24               CheckBoxList chkbx = (CheckBoxList)form1.FindControl("interests_CheckBoxList");
25               //get results
26               while (reader.Read())
27               {
28                  
29                   ListItem currentCheckBox = chkbx.Items.FindByValue(reader[0].ToString());
30                   if (currentCheckBox != null)
31                   {
32                       currentCheckBox.Selected = true;
33                   }
34               }
35   
36               //close reader
37               reader.Close();
38           }
39           catch
40           {
41              
42               Response.Write("error");
43   
44           }
45           finally
46           {
47               //close connection
48               sqlConnection1.Close();
49           }
50      
51       }