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delete previous pushpin toadd new one.

This is a discussion on delete previous pushpin toadd new one. within the MapPoint 2006/2009 Discussion forums, part of the Map Forums category; Hello, I am new to Mappoint. I want to know how to delete continuous pushpin. Like if I will insert ...


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Old 04-13-2008
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Yellow Belt
  
Join Date: Mar 2008
Posts: 37
delete previous pushpin toadd new one.
Hello,
I am new to Mappoint. I want to know how to delete continuous pushpin. Like if I will insert lat & lon and when I will insert next time I want mine previous pushpin be deleted. I tried but it keep on deleting my new add pushpin. Please let me know how to overcome this problem. I am using C#.
Hope to hear from you people.
Gul
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Old 04-14-2008
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Posts: 2,094
Re: delete previous pushpin toadd new one.
Hi,

a Pushpin has a Delete method. So if you have somewhere:
Code:
PushPin pp = MP.ActiveMap.AddPushpin(location, name);
pp.Delete();
you can also hold an array of your pushpins. Or you can find a specific pushpin to delete with FindPushpin() method.

If you want to move a pushpin or replace it then you can also change the Location property of it to move it to a next location on the map. Less resources and it saves time.
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Old 04-14-2008
Member
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Join Date: Mar 2008
Posts: 37
Re: delete previous pushpin toadd new one.
Hello,
Thanks Wilfried. Well with find pushpin I cant able to delete all previous pushpins generated by GPS and only plot pushpin that is in the visible area. I want to keep mine exact position pushpin and delete the previous pushpins. With PP.Delete(); i can able to delete but I am interested to keep my location pushpin and delete others.
Nasir


Quote:
Originally Posted by Wilfried View Post
Hi,

a Pushpin has a Delete method. So if you have somewhere:
Code:
PushPin pp = MP.ActiveMap.AddPushpin(location, name);
pp.Delete();
you can also hold an array of your pushpins. Or you can find a specific pushpin to delete with FindPushpin() method.

If you want to move a pushpin or replace it then you can also change the Location property of it to move it to a next location on the map. Less resources and it saves time.
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Old 04-14-2008
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Join Date: Dec 2002
Posts: 237
Re: delete previous pushpin toadd new one.
nasirgul,

Try deleting the "My PushPins" dataset before adding a new pushpin.

Mike Mattys
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Old 04-14-2008
Member
Yellow Belt
  
Join Date: Mar 2008
Posts: 37
Re: delete previous pushpin toadd new one.
Hello,
I tried with the below code but pushpin appears and invisible within second.

if (radioButton1.Checked)
{
MapPoint.Location loc = axMappointControl1.ActiveMap.Location;

double Lat = Convert.ToDouble(this.textBox1.Text as string);
double Lon = Convert.ToDouble(this.textBox2.Text as string);
loc = axMappointControl1.ActiveMap.GetLocation(Lat, Lon, Altitude);
loc.GoTo();
// MapPoint.Pushpin currPushpin = null;

//currPushpin = axMappointControl1.ActiveMap.AddPushpin(loc, "mylocation");


// currPushpin = axMappointControl1.ActiveMap.AddPushpin(loc, "hi");

//MapPoint.DataSets ds = axMappointControl1.ActiveMap.DataSets;

object o = "My Pushpins";
try
{
MapPoint.Pushpin hi = null;
hi = axMappointControl1.ActiveMap.AddPushpin(loc, "hi");

MapPoint.DataSet myPushpins = axMappointControl1.ActiveMap.DataSets.get_Item(ref o);
MapPoint.Recordset rs = axMappointControl1.ActiveMap.DataSets.get_Item(ref o).QueryAllRecords();


rs.MoveFirst();
//rs.MoveNext();

while (!rs.EOF)
{
//rs.Pushpin.GoTo();
rs.Pushpin.Delete();
rs.MoveNext();
}



}
catch
{


}


}

Nasir

Quote:
Originally Posted by Mattys Consulting View Post
nasirgul,

Try deleting the "My PushPins" dataset before adding a new pushpin.

Mike Mattys
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Old 04-14-2008
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Join Date: Dec 2002
Posts: 237
Re: delete previous pushpin toadd new one.
I don't speak .Net yet.

Concept is:
Default dataset is My Pushpins, so delete the dataset
When unassigned pin is added, MapPoint must recreate My Pushpins
to add the new pin.

You might also assign a more visible pushpin symbol.

Mike Mattys
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Old 04-15-2008
Member
Yellow Belt
  
Join Date: Mar 2008
Posts: 37
Re: delete previous pushpin toadd new one.
Hi,
I cant able to resolve the problem of deleting previous pushpin and get mine visible pushpin only. Iam intrested to delete all previous pushpins generated by GPS and only want to show pushpin that is in the visible area.I tried for deleting PP dataset and then add new one but not able to get control on program. ....please let me help to come out of this problem.
Code:
 object o = "Pushpins";
               Pushpin a =null;
               a= axMappointControl1.ActiveMap.AddPushpin(loc, "hi");
                try
                {
                   
//MapPoint.DataSet Pushpins = axMappointControl1.ActiveMap.DataSets.get_Item(ref o);
MapPoint.Recordset rs = axMappointControl1.ActiveMap.DataSets.get_Item(ref o).QueryAllRecords();
MapPoint.DataSet pushpin = axMappointControl1.ActiveMap.DataSets.AddPushpinSet("new");
a.Delete();
                    rs.MoveFirst();
                    while (!rs.EOF)
                    {
                        axMappointControl1.ActiveMap.DataSets.ZoomTo();                        
                        rs.Pushpin.MoveTo(pushpin);
                        rs.MoveNext();
                    }

                }
                catch {  }
            }

Quote:
Originally Posted by Wilfried View Post
Hi,

a Pushpin has a Delete method. So if you have somewhere:
Code:
PushPin pp = MP.ActiveMap.AddPushpin(location, name);
pp.Delete();
you can also hold an array of your pushpins. Or you can find a specific pushpin to delete with FindPushpin() method.

If you want to move a pushpin or replace it then you can also change the Location property of it to move it to a next location on the map. Less resources and it saves time.
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Old 04-16-2008
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Posts: 2,094
Re: delete previous pushpin toadd new one.
Hi,

I answered in other thread on how to delete all pushpins.
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Old 08-22-2008
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Join Date: Aug 2008
Posts: 9
Re: delete previous pushpin toadd new one.
Where is the other thread? Looking to delete My Pushpins...cheers
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Old 08-25-2008
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Senior Member
Black Belt
  
Join Date: Nov 2004
Posts: 2,094
Re: delete previous pushpin toadd new one.
Hi,

I don't know because it is a while ago. But this will delete the dataset:

Code:
object o = "My Pushpins";
MP.ActiveMap.DataSets.get_Item(ref o).Delete();
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