ASP.NET - problem while reading the repeater.control

on the button click event i write the below code for inserting the record into my database.but compiler return 0 value for Repeater1.Controls.Count.but i have five control of checkbox inside the repeater control in my page.

            for (int i = 0; i <= Repeater1.Controls.Count - 1; i++)
            {
                CheckBox obj = (CheckBox)Repeater1.Controls[i].FindControl("checkbox");
                if (obj != null)
                {
                    SqlConnection objConnection = new SqlConnection("Data Source=localhost;Initial Catalog=PageIssue;Integrated Security=True");
                    objConnection.Open();
                    SqlCommand objCommand = new SqlCommand();
                    objCommand.CommandText = "insert into tblCustomer values('" + txtCustomerName.Text + "','" + TextBox2.Text + "','" + obj.Text + "')";
                    objCommand.Connection = objConnection;
                    objCommand.ExecuteNonQuery();
                    objConnection.Close();
                }
            }   
        }

i have created checkbox dynamically on behind code.
SqlConnection objConnection = new SqlConnection("Data Source=localhost;Initial Catalog=PageIssue;Integrated Security=True");
                objConnection.Open();
                SqlCommand objCommand = new SqlCommand();
                objCommand.CommandText = "select tblCategory.DataList from tblCategory where tblCategory.CatogeryID=2";
                objCommand.Connection = objConnection;
                objCommand.ExecuteNonQuery();
                SqlDataAdapter objAdapter = new SqlDataAdapter(objCommand);
                DataSet objDataSet = new DataSet();
                objAdapter.Fill(objDataSet);
                foreach (DataRow objDataRow in objDataSet.Tables[0].Rows)
                {
                    for (int i = 1; i < 2; i++)
                    {
                        obj = new CheckBox();
                        Repeater1.Controls.Add(obj);
                        obj.Text = objDataRow[0].ToString();
                    }
                }
                Label1.Text=Repeater1.Controls.Count.ToString();
                objConnection.Close();
            }
how can i insert the the record in my database?
label1 gives it appropriate value i.e 5
thanks
regards

First check the name of CheckBox, which you are giving while searching.


CheckBox obj = (CheckBox)Repeater1.Controls[i].FindControl("checkbox");