how to get attribute of input in asp.net forms

Question

I have an input in ASP.NET form. I did not use ASP.NET controls, but the adjective runat="server" was used. Like this:

<input id="cmbIOType" name="cmbIOType" runat="server" list="listcmbIOType" autocomplete="off" data-id="564" value="111" />

I'm using strig valcmbIOType = cmbIOType.value; to get the input value. I also need to data-id the input.
I used string idcmbIOType = cmbIOType.Attributes["data-id"] but returned NULL. Meanwhile, the data-id is made by Jquery.

Please help.

No other attributes than name and value are posted. Take a different approach, for example using AJAX. — CodeCaster
– CodeCaster, Commented Mar 3, 2015 at 10:28

nima shayanfar · Accepted Answer · 2015-03-03 10:50:04Z

1

i used this:

<input id="cmbLoc" name="cmbLoc" runat="server" list="listcmbLoc" autocomplete="off" />
<datalist id="listcmbLoc">
       <option data-id="15" value="CPF"></option>
       <option data-id="18" value="HOLD"></option>
       <option data-id="19" value="CCR"></option>
 </datalist>
<div style="display: none"><input id="cmbLoc_ID" type="text" name="cmbLoc_ID" runat="server"/></div>
<script type="text/javascript">
    $(document).ready(function () {
          $("#cmbLoc").change(function () {
$("#MainContent_cmbLoc_ID").val($('#listcmbLoc').find('option[value="' + $(this).val() + '"]').data('id'));
          });
    });
</script>

And enter cmbLoc_ID.value in the code behind it to get data-id.

answered Mar 3, 2015 at 10:50

nima shayanfar

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