how to find a route from node to node till reach the destination

Hi, I have problem in finding the route. find one by one till reach the destination. the criteria is to get the nearest node,once its find, that nearest node will be a source node and again find the nearest one.here's the code:

clear 
close all
home_size=25;
radius=10;
No_Nodes =100;
x=0;
y=0;
w=22;h=7;
Cell_Range = 10;

Node_Loc = round(home_size*rand(No_Nodes, 2));

[temp,Source_Loc]=min(Node_Loc(:,1)); 
[tmp,Dest_Loc]=max(Node_Loc(:,1));
plot(Node_Loc(Source_Loc,1),Node_Loc(Source_Loc,2),'or');hold on; 
plot(Node_Loc(Dest_Loc,1),Node_Loc(Dest_Loc,2), 'ok'); hold on;
hold on
Source_Loc=Node_Loc(Source_Loc,:)
Dest_Loc=Node_Loc(Dest_Loc,:)

SLoc=Source_Loc;
Sarah=[]; %j=1;
SPts=Node_Loc; [Ck Indx1]=min(SPts(:,1));
SPts(Indx1,:)=[];

for i=1:length(SPts(:,1))
    for SLoc ~= Dest_Loc
     plot(SPts(i,1), SPts(i,2), '.b'); hold on; axis equal;

           Dist(i)=sqrt((SPts(i,1)-SLoc(1,1))^2+(SPts(i,2)-SLoc(1,2))^2);
           Sarah=[Sarah Dist(i)];

           [Minmm Indx]=min(Sarah);
           plot([SLoc(1,1);SPts(Indx,1)],[SLoc(1,2);SPts(Indx,2)],'g');hold on 
           SLoc=[SPts(Indx,1),SPts(Indx,2)]

      end
  end

I hope somebody can help me on this. thank you very much.