Problem in accessing 4 decimal values while uploading excel

Question

Hi sir,
     Problem in accessing 4 decimal values while uploading excel into asp.net c#. I have created one website that upload one excel file containing one field 'customerid' as "5.53861.11.11.100126", but it shows null value while the other values like "1.14026836"
showing the correct values in 'customerid' field.

    My question is why i cant able to read the 'customerid' field as "5.53861.11.11.100126". I can able to read the value "1.14026836". Kindly give me the solution for this problem.