if same city name are there then it can'n repeat?

Question

i need help to dislpy unic city name if city name are same then city data is disply but city name is not display?

 

my code like this:

 

<%

string tmp = "";

tmp=Convert.ToString(dstTourData1.Rows[i]["CityName"]);

if (tmp !=Convert.ToString(dstTourData1.Rows[i]["CityName"]))

{

%>

<div class="col-md-3">

<h3><%=dstTourData1.Rows[i]["CityName"] %>,<%=dstTourData1.Rows[i]["stateName"] %>,<%=dstTourData1.Rows[i]["CountryName"] %></h3>

</div>

<%

for (int j = 0; j <dstTourData1.Rows.Count; j++)

{

   <%

 

<div class="col-md-9">

<br />

<br />

<div class="col-md-12">

<h4><%=dstTourData1.Rows[i]["lname"] %></h4>

<p>

<%=dstTourData1.Rows[i]["detail"] %>

<br />

<b>Address </b>: <%=dstTourData1.Rows[i]["address"] %>

</p>

<p>

<img src="UploadImages/<%=dstTourData1.Rows[i]["image1"]%>" height="60" width="60" style="margin-right:25px" />

<img src="UploadImages/<%=dstTourData1.Rows[i]["image2"]%>" height="60" width="60" style="margin-right:25px" />

<img src="UploadImages/<%=dstTourData1.Rows[i]["image3"]%>" height="60" width="60" style="margin-right:25px" />

<img src="UploadImages/<%=dstTourData1.Rows[i]["image4"]%>" height="60" width="60" style="margin-right:25px" />

<img src="UploadImages/<%=dstTourData1.Rows[i]["image5"]%>" height="60" width="60" style="margin-right:25px" />

</p>

<!-- End row -->

</div>

</div>

<!-- End col-md-9 -->

</div>

 

 

   %> 

}

}

%>