.net - how to upload file using wpf and c# in windows application -

i have form on there browse button , when clicked it, dialogue box open , selected file path or file name of file show on textbox have written code file path not display in text box, have try resolve fail, kindly me out of this, , there 1 thing more, want upload in specfic folder , download on system , please tell me also

using system; using system.collections.generic; using system.text; using system.windows; using system.windows.controls; using system.windows.data; using system.windows.documents; using system.windows.input; using system.windows.media; using system.windows.media.imaging; using system.windows.shapes; using system.data; using system.data.sqlclient; using system.linq; using system.io; //using system.drawing; using system.componentmodel;    namespace ris_2 {     /// <summary>     /// interaction logic crud.xaml     /// </summary>     public partial class crud : window     {         public crud()         {             this.initializecomponent();              // insert code required on object creation below point.         }          private void browse_btn_click(object sender, routedeventargs e)         {             stream checkstream = null;          //   openfiledialog op1 = new openfiledialog();             microsoft.win32.openfiledialog dlg = new microsoft.win32.openfiledialog();             dlg.multiselect = false;             dlg.filter = "all image files | *.*";             //dlg.filter = "(*.pfw)|*.pfw|all files (*.*)|*.*";            nullable<bool> result = dlg.showdialog();             // if ((bool)dlg.showdialog())             if(result==true)             {                 try                 {                     if ((checkstream = dlg.openfile()) != null)                     {                      //   myimage.source = new bitmapimage(new uri(dlg.filename, urikind.absolute));                         //listbox1.items.add(openfiledialog.filename);                         string filename = dlg.filename;                         tb_file.text = filename;                        // tb_file.appendtext(dlg.filename.tostring());                         messagebox.show("successfully done", filename);                     }                 }                 catch (exception ex)                 {                     messagebox.show("error: not read file disk. original error: " + ex.message);                 }              }              else              {                   messagebox.show("problem occured, try again later");               }          }       } } 

frankly, me code looks okay, it's strange doesn't work. having said that, i'd suggest take different approach. using wpf, @ data binding. if in code behind define property

private string _filename; public string filename {  get{return _filename;}  set{   _filename = value;   onpropertychanged("filename"); } 

the implementation of onpropertychanged , simple explanation of inotifypropertychanged can found @ http://www.java2s.com/tutorial/csharp/0470__windows-presentation-foundation/raisethepropertychangedevent.htm

in xaml, have textblock should extended binding

textblock x:name="tb_file" text="{binding path=filename}" 

to ensure binding property in code behind works, please refer binding objects defined in code-behind

hope helps (at least first part of question)