c# - Getting the index of a ComboBox in in a DataGridView -

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i have system.windows.forms.datagridview in 1 column has comboboxes. when changes in combobox, need know new item is, , row index of combobox in event took place. latter giving me trouble. have following:

class myform : form {     private system.windows.forms.datagridview m_gridview;     private system.windows.forms.datagridviewcomboboxcolumn m_comboboxcolumn;      public myform ()      {       /* ... lots of initialisation stuf...*/       this.m_gridview.columns.addrange(new system.windows.forms.datagridviewcolumn[] {                                        this.m_comboboxcolumn});     }      private void m_gridview_editingcontrolshowing(object sender, datagridvieweditingcontrolshowingeventargs e)     {         combobox combobox = e.control combobox;         if (combobox != null)         {             combobox.selectedindexchanged -= new eventhandler(m_comboboxcolumn_selectedindexchanged);             combobox.selectedindexchanged += new eventhandler(m_comboboxcolumn_selectedindexchanged);         }     }      private void m_comboboxcolumn_selectedindexchanged(object sender, eventargs e)     {         combobox combobox = (combobox) sender;         string item = combobox.text;         if (item != null)         {             system.diagnostics.debug.writeline(item); // new item text             // need row index of combobox in 'm_gridview' (or 'm_comboboxcolumn')         }     } }

how can find row index of combobox in datagridviewcomboboxcolumn in last method?

you should cast datagridviewcomboboxeditingcontrol , access editingcontrolrowindex row index this:

var combobox = (datagridviewcomboboxeditingcontrol)sender; int rowindex = combobox.editingcontrolrowindex;

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