Asp.net dropdown of countries with isd code

<asp:DropDownList ID="ddlCountryWithISD" runat="server" CssClass="form-control" Style="width: 320px">
                        <asp:ListItem data-countryCode="IN" Value="+91" Selected>India (+91)</asp:ListItem>
                        <asp:ListItem data-countryCode="GB" Value="44" >UK (+44)</asp:ListItem>
                        <asp:ListItem data-countryCode="US" Value="1">USA(+1)</asp:ListItem>
                        <asp:ListItem data-countryCode="DZ" Value="213">Algeria (+213)</asp:ListItem>
                        <asp:ListItem data-countryCode="AD" Value="376">Andorra (+376)</asp:ListItem>
                        <asp:ListItem data-countryCode="AO" Value="244">Angola (+244)</asp:ListItem>
                        <asp:ListItem data-countryCode="AI" Value="1264">Anguilla (+1264)</asp:ListItem>
                        <asp:ListItem data-countryCode="AG" Value="1268">Antigua &amp; Barbuda (+1268)</asp:ListItem>
                        <asp:ListItem data-countryCode="AR" Value="54">Argentina (+54)</asp:ListItem>
                        <asp:ListItem data-countryCode="AM" Value="374">Armenia (+374)</asp:ListItem>
                        <asp:ListItem data-countryCode="AW" Value="297">Aruba (+297)</asp:ListItem>
                        <asp:ListItem data-countryCode="AU" Value="61">Australia (+61)</asp:ListItem>
                        <asp:ListItem data-countryCode="AT" Value="43">Austria (+43)</asp:ListItem>
                        <asp:ListItem data-countryCode="AZ" Value="994">Azerbaijan (+994)</asp:ListItem>
                        <asp:ListItem data-countryCode="BS" Value="1242">Bahamas (+1242)</asp:ListItem>
                        <asp:ListItem data-countryCode="BH" Value="973">Bahrain (+973)</asp:ListItem>
                        <asp:ListItem data-countryCode="BD" Value="880">Bangladesh (+880)</asp:ListItem>
                        <asp:ListItem data-countryCode="BB" Value="1246">Barbados (+1246)</asp:ListItem>
                        <asp:ListItem data-countryCode="BY" Value="375">Belarus (+375)</asp:ListItem>
                        <asp:ListItem data-countryCode="BE" Value="32">Belgium (+32)</asp:ListItem>
                        <asp:ListItem data-countryCode="BZ" Value="501">Belize (+501)</asp:ListItem>
                        <asp:ListItem data-countryCode="BJ" Value="229">Benin (+229)</asp:ListItem>
                        <asp:ListItem data-countryCode="BM" Value="1441">Bermuda (+1441)</asp:ListItem>
                        <asp:ListItem data-countryCode="BT" Value="975">Bhutan (+975)</asp:ListItem>
                        <asp:ListItem data-countryCode="BO" Value="591">Bolivia (+591)</asp:ListItem>
                        <asp:ListItem data-countryCode="BA" Value="387">Bosnia Herzegovina (+387)</asp:ListItem>
                        <asp:ListItem data-countryCode="BW" Value="267">Botswana (+267)</asp:ListItem>
                        <asp:ListItem data-countryCode="BR" Value="55">Brazil (+55)</asp:ListItem>
                        <asp:ListItem data-countryCode="BN" Value="673">Brunei (+673)</asp:ListItem>
                        <asp:ListItem data-countryCode="BG" Value="359">Bulgaria (+359)</asp:ListItem>
                        <asp:ListItem data-countryCode="BF" Value="226">Burkina Faso (+226)</asp:ListItem>
                        <asp:ListItem data-countryCode="BI" Value="257">Burundi (+257)</asp:ListItem>
                        <asp:ListItem data-countryCode="KH" Value="855">Cambodia (+855)</asp:ListItem>
                        <asp:ListItem data-countryCode="CM" Value="237">Cameroon (+237)</asp:ListItem>
                        <asp:ListItem data-countryCode="CA" Value="1">Canada (+1)</asp:ListItem>
                        <asp:ListItem data-countryCode="CV" Value="238">Cape Verde Islands (+238)</asp:ListItem>
                        <asp:ListItem data-countryCode="KY" Value="1345">Cayman Islands (+1345)</asp:ListItem>
                        <asp:ListItem data-countryCode="CF" Value="236">Central African Republic (+236)</asp:ListItem>
                        <asp:ListItem data-countryCode="CL" Value="56">Chile (+56)</asp:ListItem>
                        <asp:ListItem data-countryCode="CN" Value="86">China (+86)</asp:ListItem>
                        <asp:ListItem data-countryCode="CO" Value="57">Colombia (+57)</asp:ListItem>
                        <asp:ListItem data-countryCode="KM" Value="269">Comoros (+269)</asp:ListItem>
                        <asp:ListItem data-countryCode="CG" Value="242">Congo (+242)</asp:ListItem>
                        <asp:ListItem data-countryCode="CK" Value="682">Cook Islands (+682)</asp:ListItem>
                        <asp:ListItem data-countryCode="CR" Value="506">Costa Rica (+506)</asp:ListItem>
                        <asp:ListItem data-countryCode="HR" Value="385">Croatia (+385)</asp:ListItem>
                        <asp:ListItem data-countryCode="CU" Value="53">Cuba (+53)</asp:ListItem>
                        <asp:ListItem data-countryCode="CY" Value="90392">Cyprus North (+90392)</asp:ListItem>
                        <asp:ListItem data-countryCode="CY" Value="357">Cyprus South (+357)</asp:ListItem>
                        <asp:ListItem data-countryCode="CZ" Value="42">Czech Republic (+42)</asp:ListItem>
                        <asp:ListItem data-countryCode="DK" Value="45">Denmark (+45)</asp:ListItem>
                        <asp:ListItem data-countryCode="DJ" Value="253">Djibouti (+253)</asp:ListItem>
                        <asp:ListItem data-countryCode="DM" Value="1809">Dominica (+1809)</asp:ListItem>
                        <asp:ListItem data-countryCode="DO" Value="1809">Dominican Republic (+1809)</asp:ListItem>
                        <asp:ListItem data-countryCode="EC" Value="593">Ecuador (+593)</asp:ListItem>
                        <asp:ListItem data-countryCode="EG" Value="20">Egypt (+20)</asp:ListItem>
                        <asp:ListItem data-countryCode="SV" Value="503">El Salvador (+503)</asp:ListItem>
                        <asp:ListItem data-countryCode="GQ" Value="240">Equatorial Guinea (+240)</asp:ListItem>
                        <asp:ListItem data-countryCode="ER" Value="291">Eritrea (+291)</asp:ListItem>
                        <asp:ListItem data-countryCode="EE" Value="372">Estonia (+372)</asp:ListItem>
                        <asp:ListItem data-countryCode="ET" Value="251">Ethiopia (+251)</asp:ListItem>
                        <asp:ListItem data-countryCode="FK" Value="500">Falkland Islands (+500)</asp:ListItem>
                        <asp:ListItem data-countryCode="FO" Value="298">Faroe Islands (+298)</asp:ListItem>
                        <asp:ListItem data-countryCode="FJ" Value="679">Fiji (+679)</asp:ListItem>
                        <asp:ListItem data-countryCode="FI" Value="358">Finland (+358)</asp:ListItem>
                        <asp:ListItem data-countryCode="FR" Value="33">France (+33)</asp:ListItem>
                        <asp:ListItem data-countryCode="GF" Value="594">French Guiana (+594)</asp:ListItem>
                        <asp:ListItem data-countryCode="PF" Value="689">French Polynesia (+689)</asp:ListItem>
                        <asp:ListItem data-countryCode="GA" Value="241">Gabon (+241)</asp:ListItem>
                        <asp:ListItem data-countryCode="GM" Value="220">Gambia (+220)</asp:ListItem>
                        <asp:ListItem data-countryCode="GE" Value="7880">Georgia (+7880)</asp:ListItem>
                        <asp:ListItem data-countryCode="DE" Value="49">Germany (+49)</asp:ListItem>
                        <asp:ListItem data-countryCode="GH" Value="233">Ghana (+233)</asp:ListItem>
                        <asp:ListItem data-countryCode="GI" Value="350">Gibraltar (+350)</asp:ListItem>
                        <asp:ListItem data-countryCode="GR" Value="30">Greece (+30)</asp:ListItem>
                        <asp:ListItem data-countryCode="GL" Value="299">Greenland (+299)</asp:ListItem>
                        <asp:ListItem data-countryCode="GD" Value="1473">Grenada (+1473)</asp:ListItem>
                        <asp:ListItem data-countryCode="GP" Value="590">Guadeloupe (+590)</asp:ListItem>
                        <asp:ListItem data-countryCode="GU" Value="671">Guam (+671)</asp:ListItem>
                        <asp:ListItem data-countryCode="GT" Value="502">Guatemala (+502)</asp:ListItem>
                        <asp:ListItem data-countryCode="GN" Value="224">Guinea (+224)</asp:ListItem>
                        <asp:ListItem data-countryCode="GW" Value="245">Guinea - Bissau (+245)</asp:ListItem>
                        <asp:ListItem data-countryCode="GY" Value="592">Guyana (+592)</asp:ListItem>
                        <asp:ListItem data-countryCode="HT" Value="509">Haiti (+509)</asp:ListItem>
                        <asp:ListItem data-countryCode="HN" Value="504">Honduras (+504)</asp:ListItem>
                        <asp:ListItem data-countryCode="HK" Value="852">Hong Kong (+852)</asp:ListItem>
                        <asp:ListItem data-countryCode="HU" Value="36">Hungary (+36)</asp:ListItem>
                        <asp:ListItem data-countryCode="IS" Value="354">Iceland (+354)</asp:ListItem>
                        <asp:ListItem data-countryCode="ID" Value="62">Indonesia (+62)</asp:ListItem>
                        <asp:ListItem data-countryCode="IR" Value="98">Iran (+98)</asp:ListItem>
                        <asp:ListItem data-countryCode="IQ" Value="964">Iraq (+964)</asp:ListItem>
                        <asp:ListItem data-countryCode="IE" Value="353">Ireland (+353)</asp:ListItem>
                        <asp:ListItem data-countryCode="IL" Value="972">Israel (+972)</asp:ListItem>
                        <asp:ListItem data-countryCode="IT" Value="39">Italy (+39)</asp:ListItem>
                        <asp:ListItem data-countryCode="JM" Value="1876">Jamaica (+1876)</asp:ListItem>
                        <asp:ListItem data-countryCode="JP" Value="81">Japan (+81)</asp:ListItem>
                        <asp:ListItem data-countryCode="JO" Value="962">Jordan (+962)</asp:ListItem>
                        <asp:ListItem data-countryCode="KZ" Value="7">Kazakhstan (+7)</asp:ListItem>
                        <asp:ListItem data-countryCode="KE" Value="254">Kenya (+254)</asp:ListItem>
                        <asp:ListItem data-countryCode="KI" Value="686">Kiribati (+686)</asp:ListItem>
                        <asp:ListItem data-countryCode="KP" Value="850">Korea North (+850)</asp:ListItem>
                        <asp:ListItem data-countryCode="KR" Value="82">Korea South (+82)</asp:ListItem>
                        <asp:ListItem data-countryCode="KW" Value="965">Kuwait (+965)</asp:ListItem>
                        <asp:ListItem data-countryCode="KG" Value="996">Kyrgyzstan (+996)</asp:ListItem>
                        <asp:ListItem data-countryCode="LA" Value="856">Laos (+856)</asp:ListItem>
                        <asp:ListItem data-countryCode="LV" Value="371">Latvia (+371)</asp:ListItem>
                        <asp:ListItem data-countryCode="LB" Value="961">Lebanon (+961)</asp:ListItem>
                        <asp:ListItem data-countryCode="LS" Value="266">Lesotho (+266)</asp:ListItem>
                        <asp:ListItem data-countryCode="LR" Value="231">Liberia (+231)</asp:ListItem>
                        <asp:ListItem data-countryCode="LY" Value="218">Libya (+218)</asp:ListItem>
                        <asp:ListItem data-countryCode="LI" Value="417">Liechtenstein (+417)</asp:ListItem>
                        <asp:ListItem data-countryCode="LT" Value="370">Lithuania (+370)</asp:ListItem>
                        <asp:ListItem data-countryCode="LU" Value="352">Luxembourg (+352)</asp:ListItem>
                        <asp:ListItem data-countryCode="MO" Value="853">Macao (+853)</asp:ListItem>
                        <asp:ListItem data-countryCode="MK" Value="389">Macedonia (+389)</asp:ListItem>
                        <asp:ListItem data-countryCode="MG" Value="261">Madagascar (+261)</asp:ListItem>
                        <asp:ListItem data-countryCode="MW" Value="265">Malawi (+265)</asp:ListItem>
                        <asp:ListItem data-countryCode="MY" Value="60">Malaysia (+60)</asp:ListItem>
                        <asp:ListItem data-countryCode="MV" Value="960">Maldives (+960)</asp:ListItem>
                        <asp:ListItem data-countryCode="ML" Value="223">Mali (+223)</asp:ListItem>
                        <asp:ListItem data-countryCode="MT" Value="356">Malta (+356)</asp:ListItem>
                        <asp:ListItem data-countryCode="MH" Value="692">Marshall Islands (+692)</asp:ListItem>
                        <asp:ListItem data-countryCode="MQ" Value="596">Martinique (+596)</asp:ListItem>
                        <asp:ListItem data-countryCode="MR" Value="222">Mauritania (+222)</asp:ListItem>
                        <asp:ListItem data-countryCode="YT" Value="269">Mayotte (+269)</asp:ListItem>
                        <asp:ListItem data-countryCode="MX" Value="52">Mexico (+52)</asp:ListItem>
                        <asp:ListItem data-countryCode="FM" Value="691">Micronesia (+691)</asp:ListItem>
                        <asp:ListItem data-countryCode="MD" Value="373">Moldova (+373)</asp:ListItem>
                        <asp:ListItem data-countryCode="MC" Value="377">Monaco (+377)</asp:ListItem>
                        <asp:ListItem data-countryCode="MN" Value="976">Mongolia (+976)</asp:ListItem>
                        <asp:ListItem data-countryCode="MS" Value="1664">Montserrat (+1664)</asp:ListItem>
                        <asp:ListItem data-countryCode="MA" Value="212">Morocco (+212)</asp:ListItem>
                        <asp:ListItem data-countryCode="MZ" Value="258">Mozambique (+258)</asp:ListItem>
                        <asp:ListItem data-countryCode="MN" Value="95">Myanmar (+95)</asp:ListItem>
                        <asp:ListItem data-countryCode="NA" Value="264">Namibia (+264)</asp:ListItem>
                        <asp:ListItem data-countryCode="NR" Value="674">Nauru (+674)</asp:ListItem>
                        <asp:ListItem data-countryCode="NP" Value="977">Nepal (+977)</asp:ListItem>
                        <asp:ListItem data-countryCode="NL" Value="31">Netherlands (+31)</asp:ListItem>
                        <asp:ListItem data-countryCode="NC" Value="687">New Caledonia (+687)</asp:ListItem>
                        <asp:ListItem data-countryCode="NZ" Value="64">New Zealand (+64)</asp:ListItem>
                        <asp:ListItem data-countryCode="NI" Value="505">Nicaragua (+505)</asp:ListItem>
                        <asp:ListItem data-countryCode="NE" Value="227">Niger (+227)</asp:ListItem>
                        <asp:ListItem data-countryCode="NG" Value="234">Nigeria (+234)</asp:ListItem>
                        <asp:ListItem data-countryCode="NU" Value="683">Niue (+683)</asp:ListItem>
                        <asp:ListItem data-countryCode="NF" Value="672">Norfolk Islands (+672)</asp:ListItem>
                        <asp:ListItem data-countryCode="NP" Value="670">Northern Marianas (+670)</asp:ListItem>
                        <asp:ListItem data-countryCode="NO" Value="47">Norway (+47)</asp:ListItem>
                        <asp:ListItem data-countryCode="OM" Value="968">Oman (+968)</asp:ListItem>
                        <asp:ListItem data-countryCode="PW" Value="680">Palau (+680)</asp:ListItem>
                        <asp:ListItem data-countryCode="PA" Value="507">Panama (+507)</asp:ListItem>
                        <asp:ListItem data-countryCode="PG" Value="675">Papua New Guinea (+675)</asp:ListItem>
                        <asp:ListItem data-countryCode="PY" Value="595">Paraguay (+595)</asp:ListItem>
                        <asp:ListItem data-countryCode="PE" Value="51">Peru (+51)</asp:ListItem>
                        <asp:ListItem data-countryCode="PH" Value="63">Philippines (+63)</asp:ListItem>
                        <asp:ListItem data-countryCode="PL" Value="48">Poland (+48)</asp:ListItem>
                        <asp:ListItem data-countryCode="PT" Value="351">Portugal (+351)</asp:ListItem>
                        <asp:ListItem data-countryCode="PR" Value="1787">Puerto Rico (+1787)</asp:ListItem>
                        <asp:ListItem data-countryCode="QA" Value="974">Qatar (+974)</asp:ListItem>
                        <asp:ListItem data-countryCode="RE" Value="262">Reunion (+262)</asp:ListItem>
                        <asp:ListItem data-countryCode="RO" Value="40">Romania (+40)</asp:ListItem>
                        <asp:ListItem data-countryCode="RU" Value="7">Russia (+7)</asp:ListItem>
                        <asp:ListItem data-countryCode="RW" Value="250">Rwanda (+250)</asp:ListItem>
                        <asp:ListItem data-countryCode="SM" Value="378">San Marino (+378)</asp:ListItem>
                        <asp:ListItem data-countryCode="ST" Value="239">Sao Tome &amp; Principe (+239)</asp:ListItem>
                        <asp:ListItem data-countryCode="SA" Value="966">Saudi Arabia (+966)</asp:ListItem>
                        <asp:ListItem data-countryCode="SN" Value="221">Senegal (+221)</asp:ListItem>
                        <asp:ListItem data-countryCode="CS" Value="381">Serbia (+381)</asp:ListItem>
                        <asp:ListItem data-countryCode="SC" Value="248">Seychelles (+248)</asp:ListItem>
                        <asp:ListItem data-countryCode="SL" Value="232">Sierra Leone (+232)</asp:ListItem>
                        <asp:ListItem data-countryCode="SG" Value="65">Singapore (+65)</asp:ListItem>
                        <asp:ListItem data-countryCode="SK" Value="421">Slovak Republic (+421)</asp:ListItem>
                        <asp:ListItem data-countryCode="SI" Value="386">Slovenia (+386)</asp:ListItem>
                        <asp:ListItem data-countryCode="SB" Value="677">Solomon Islands (+677)</asp:ListItem>
                        <asp:ListItem data-countryCode="SO" Value="252">Somalia (+252)</asp:ListItem>
                        <asp:ListItem data-countryCode="ZA" Value="27">South Africa (+27)</asp:ListItem>
                        <asp:ListItem data-countryCode="ES" Value="34">Spain (+34)</asp:ListItem>
                        <asp:ListItem data-countryCode="LK" Value="94">Sri Lanka (+94)</asp:ListItem>
                        <asp:ListItem data-countryCode="SH" Value="290">St. Helena (+290)</asp:ListItem>
                        <asp:ListItem data-countryCode="KN" Value="1869">St. Kitts (+1869)</asp:ListItem>
                        <asp:ListItem data-countryCode="SC" Value="1758">St. Lucia (+1758)</asp:ListItem>
                        <asp:ListItem data-countryCode="SD" Value="249">Sudan (+249)</asp:ListItem>
                        <asp:ListItem data-countryCode="SR" Value="597">Suriname (+597)</asp:ListItem>
                        <asp:ListItem data-countryCode="SZ" Value="268">Swaziland (+268)</asp:ListItem>
                        <asp:ListItem data-countryCode="SE" Value="46">Sweden (+46)</asp:ListItem>
                        <asp:ListItem data-countryCode="CH" Value="41">Switzerland (+41)</asp:ListItem>
                        <asp:ListItem data-countryCode="SI" Value="963">Syria (+963)</asp:ListItem>
                        <asp:ListItem data-countryCode="TW" Value="886">Taiwan (+886)</asp:ListItem>
                        <asp:ListItem data-countryCode="TJ" Value="7">Tajikstan (+7)</asp:ListItem>
                        <asp:ListItem data-countryCode="TH" Value="66">Thailand (+66)</asp:ListItem>
                        <asp:ListItem data-countryCode="TG" Value="228">Togo (+228)</asp:ListItem>
                        <asp:ListItem data-countryCode="TO" Value="676">Tonga (+676)</asp:ListItem>
                        <asp:ListItem data-countryCode="TT" Value="1868">Trinidad &amp; Tobago (+1868)</asp:ListItem>
                        <asp:ListItem data-countryCode="TN" Value="216">Tunisia (+216)</asp:ListItem>
                        <asp:ListItem data-countryCode="TR" Value="90">Turkey (+90)</asp:ListItem>
                        <asp:ListItem data-countryCode="TM" Value="7">Turkmenistan (+7)</asp:ListItem>
                        <asp:ListItem data-countryCode="TM" Value="993">Turkmenistan (+993)</asp:ListItem>
                        <asp:ListItem data-countryCode="TC" Value="1649">Turks &amp; Caicos Islands (+1649)</asp:ListItem>
                        <asp:ListItem data-countryCode="TV" Value="688">Tuvalu (+688)</asp:ListItem>
                        <asp:ListItem data-countryCode="UG" Value="256">Uganda (+256)</asp:ListItem>
                        <asp:ListItem data-countryCode="UA" Value="380">Ukraine (+380)</asp:ListItem>
                        <asp:ListItem data-countryCode="AE" Value="971">United Arab Emirates (+971)</asp:ListItem>
                        <asp:ListItem data-countryCode="UY" Value="598">Uruguay (+598)</asp:ListItem>
                        <asp:ListItem data-countryCode="UZ" Value="7">Uzbekistan (+7)</asp:ListItem>
                        <asp:ListItem data-countryCode="VU" Value="678">Vanuatu (+678)</asp:ListItem>
                        <asp:ListItem data-countryCode="VA" Value="379">Vatican City (+379)</asp:ListItem>
                        <asp:ListItem data-countryCode="VE" Value="58">Venezuela (+58)</asp:ListItem>
                        <asp:ListItem data-countryCode="VN" Value="84">Vietnam (+84)</asp:ListItem>
                        <asp:ListItem data-countryCode="VG" Value="84">Virgin Islands - British (+1284)</asp:ListItem>
                        <asp:ListItem data-countryCode="VI" Value="84">Virgin Islands - US (+1340)</asp:ListItem>
                        <asp:ListItem data-countryCode="WF" Value="681">Wallis &amp; Futuna (+681)</asp:ListItem>
                        <asp:ListItem data-countryCode="YE" Value="969">Yemen (North)(+969)</asp:ListItem>
                        <asp:ListItem data-countryCode="YE" Value="967">Yemen (South)(+967)</asp:ListItem>
                        <asp:ListItem data-countryCode="ZM" Value="260">Zambia (+260)</asp:ListItem>
                        <asp:ListItem data-countryCode="ZW" Value="263">Zimbabwe (+263)</asp:ListItem>
                    </asp:DropDownList>