c# - How to pass data from childform to parentform -

i have 2 forms ,form1 , form2.

form1 - parent form2 - child

form1 contains following,

textbox - loads file path, datagridview - loads file data, buttonnext -when button cliked opens form2,

form2 contains following,

browsebutton - broswe file directory textbox - shows path buttonfinish - tabes form1

*now want access datagridview form1(parent) form2(child). can broswe file on form2 , when click finish can see file path on form1(parent) textbox no databeing loaded.

how can load data on form1 datagridview ?

this code far..

form2.

    public frminputfile(frmmain_page _frmmain)     {         initializecomponent();         this._frmmain = _frmmain;     }  private void btnbrowse_click(object sender, eventargs e)  {      browsefile(); }   private void btnfinish_click(object sender,eventargs e)     {          _frmmain.setfilepath(txtinputfile.text);         _grid.rows.clear();          //cant grid form1         string pathselection = "";         if (txtinputfile.text.length > 0)         {             pathselection = txtinputfile.text;         }         odataset = new dataset();         xmlreadmode omode = odataset.readxml(pathselection);          (int = 0; < odataset.tables[2].rows.count; i++)         {             string comment = odataset.tables["data"].rows[i][2].tostring();             string font = between(comment, "[font]", "[/font]");             string datestamp = between(comment, "[datestamp]", "[/datestamp]");             string commentval = between(comment, "[comment]", "[/comment]");             string[] row = new string[] { odataset.tables["data"].rows[i][0].tostring(), odataset.tables["data"].rows[i][1].tostring(), font, datestamp, commentval };             _grid.rows.add(row);         }        this.hide();         program._mainpage.show(); 

form1

    private void btnloadfile_click(object sender, eventargs e)     {         frminputfile frminput = new frminputfile(this);         frminput.show();      }     public void setfilepath(string filepath)     {         txtinputfile.text = filepath;     }     //i dont know how can handle gridview here     public void loadgrid(string loadgrid)     {         gridview_input.tostring();     } 

first things first. please avoid duplicate posts.

what variable _grid doing here ?? way of passing data 1 form other looks strange. nevertheless, tried simulate problem , able add rows in form1 from2. code listing given below. thing note,i have added 4 columns in datagridview in designer. in case might want add columns programmatically.

 public partial class form2 : form {     public form2(form1 frm1)     {         initializecomponent();         form1prop = frm1;     }      private void button1_click(object sender, eventargs e)     {         form1prop.setfilepath("hihi");          form1prop.datagridpropgrid.rows.add("hih", "ki", "lo", "po");     }      public form1 form1prop { get; set; } }      public partial class form1 : form {     public form1()     {         initializecomponent();     }      private void button1_click(object sender, eventargs e)     {         form2 frm2 = new form2(this);         frm2.show();     }      public void setfilepath(string filepath)     {         textbox1.text = filepath;     }      public datagridview datagridpropgrid     {                 {             return datagridview1;         }     } } 

cheers