如何从asp.net中动态生成的html文本框中获取值

Question

I want to fetch the values from dynamically created html textboxes in my aspx page. Now first I want to check if the textbox exists or not. If exists then I want to fetch values from these texboxes. Here is the code which I am using for creating textboxes dynamically

<script type="text/javascript">
    var counter = 2;
    $(document).ready(function () {

        $("#addButton").click(function () {
            if (counter > 3) {
                alert("Limit Exceeds");
                return false;
            }
            var $wrap = $('#TextBoxesGroup');
            var dynamichtml = '<div id="div' + counter + '"><div class="mcity"><label> Leaving from</label><input type="text" name="textbox' + counter + '" id="textbox' + counter + '" class="auto"/>  </div><div class="mcity"> <label> Going to</label>  <input type="text" name="textbox' + counter + '" id="textbox' + counter + 1 + '" class="auto"/> </div><div class="mcity"> <label> Going to</label>  <input type="text" name="textbox' + counter + '" id="textbox' + counter + 11 + '" class="auto"/> </div>';
            $wrap.append(dynamichtml);
            counter++;
        });

        $("#removeButton").click(function () {
            if (counter == 1) {
                alert("No more textbox to remove");
                return false;
            }

            counter--;
            $("#TextBoxesGroup").find("#div"+ counter).remove();
          //  $("#TextBoxesGroup").find("#textbox" + counter+1).remove();


        });
  $(".auto").live("focus", function () {

                  $(this).autocomplete({

                      source: function (request, response) {
                          var textval = request.term; // $(this).val();
                          $.ajax({
                              type: "POST",
                              contentType: "application/json; charset=utf-8",
                              url: "Home.aspx/GetAutoCompleteData",
                              data: "{'code':'" + textval + "'}",
                              dataType: "json",
                              success: function (data) {
                                  response(data.d);
                              },
                              error: function (result) {
                                  alert("Error");
                              }
                          });
                      }
                  });
              });
          });

</script>

This code is generating textboxes generating and I am fetching data from my database using json autocomplete process.After this I am trying to send the information to another page using javascript the code that I write for this is below

<script type="text/javascript">
      $(function () {
          $("#btnPost").bind("click", function () {
              //Create a Form
              var $form = $("<form/>").attr("id", "data_form")
                            .attr("action", "Complete.aspx")
                            .attr("method", "post");
              $("body").append($form);

              //Append the values to be send
              AddParameter($form, "txtleft", $("#txtSearchleft").val());
              AddParameter($form, "txtright", $("#txtSearchright").val());

              //Send the Form
              $form[0].submit();
          });
      });
      function AddParameter(form, name, value) {
          var $input = $("<input />").attr("type", "hidden")
                                .attr("name", name)
                                .attr("value", value);
          form.append($input);
      }
    </script>

This work fine for textboxes which placed default in my page. But for the textboxes that generate dynamically after these textboxes I dnt know how to send values of those textboxes to my next page

Javascript and asp.net experts please help me to resolve this

Thanks

Answer 1

You can get the controls values using FormCollection . Note that it works on name rather than Id.

You need to keep the count and follow some naming convention for name of your controls.

Create a asp.net hidden field and keep the control count in that. And get according the values of the hidden field.
Msdn link

Answer 2

well if you were to assign your form an id you could just serialize your form and post it using ajax if you wanted

$.post("complete.aspx",$("#data_form").serialize(),function(response){
//react to the post here
});