Gridview paging is not working correctly

Question

Hi ,

 

I need pagination for my asp.net gridview 

 

 I write code like below but its not work correctly.

 

This is my c# code :

 

protected void Button1_Click(object sender, EventArgs e)

{

string url = "http://maps.google.com/maps/api/geocode/xml?address=" + txtsearch.Text + "&sensor=false";

WebRequest request = WebRequest.Create(url);

using (WebResponse response = (HttpWebResponse)request.GetResponse())

{

using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))

{

DataSet dsResult = new DataSet();

dsResult.ReadXml(reader);

DataTable dtCoordinates = new DataTable();

dtCoordinates.Columns.AddRange(new DataColumn[4] { new DataColumn("Id", typeof(int)),

new DataColumn("Address", typeof(string)),

new DataColumn("Latitude",typeof(string)),

new DataColumn("Longitude",typeof(string)) });

var latitude = string.Empty;

var longitude = string.Empty;

if (dsResult.Tables["location"] != null && dsResult.Tables["location"].Rows.Count > 0)

{

latitude = dsResult.Tables["location"].Rows[0]["lat"].ToString();

longitude = dsResult.Tables["location"].Rows[0]["lng"].ToString();

map.Lattitude = float.Parse(latitude);

map.Longitude = float.Parse(longitude);

map.Radius = float.Parse(txtdemo.Text);

dsLocation= mapBL.GetLocation(map);

GridView2.DataSource = dsLocation;

GridView2.DataBind();

}

}

}

}

 

 This is gridview onchange :

 

 

protected void OnPageIndexChanging(object sender, GridViewPageEventArgs e)

{

GridView2.PageIndex = e.NewPageIndex;

GridView2.DataSource = dsLocation;

GridView2.DataBind();

}

but this is not work properly

 

Please send correct code for that.

 

Thanks