c# - how to update GridView row at once in sql database -


i have dll class call table 

    public datatable gettemtablevalue(string tablename)     {         sqlconnection conn = new sqlconnection(sconnectionstring);         conn.open();          string query = "select *  " + tablename + "";          sqlcommand cmd = conn.createcommand();         cmd.commandtext = query;          datatable ds = new datatable();         sqldataadapter da = new sqldataadapter(cmd);         da.fill(ds);         conn.close();          return ds;     }

and binding table grid view

    private void loaddata()     {          clsdataaccess objdal = new clsdataaccess();         datatable ds = new datatable();          string objbll = ddltemtablelist.selectedvalue.tostring();         ds = objdal.gettemtablevalue(objbll);          if (ds != null && ds.rows.count != 0)         {             lblnorecord.visible = false;              foreach (datacolumn col in ds.columns)             {                 //declare bound field , allocate memory bound field.                 boundfield bfield = new boundfield();                  //initalize datafield value.                 bfield.datafield = col.columnname;                  //initialize headertext field value.                 bfield.headertext = col.columnname;                  //add newly created bound field gridview.                 gvdataentry.columns.add(bfield);              }               gvdataentry.datasource = ds;             gvdataentry.databind();             gvdataentry.visible = true;         }         else         {             lblnorecord.visible = true;             gvdataentry.datasource = null;             gvdataentry.databind();             //gvdataentry.emptydatatext = "no recorddata found";         }

so table loading grid view. every time when change tables in dropdownbox , press search button columns change dynamically how can update data in grid view through using rowediting,rowupdating function , need store date in database?


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