C# DatagridView shows 0 columns -

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• datagridview has no columns 1 answer

i'm creating datagridview , using datatable populate it.

my c#

datagridview dgv = new datagridview(); datatable dt = new datatable();  dt.columns.add("col_1"); dt.columns.add("col_2");  for(int i=0; i< mydictionary; i++) {   dt.rows.add(mydictionary.key, mydictionary.value); }  dgv.datasource = dt;  for(int j=0; j < dgv.columns.count; j++) {...} // count 0... 

i'm looking access columns can

dgv.columns[j].autosizemode = datagridviewautosizecolumnmode.fill;

q: how can have datagridview reflect columns properly?

you have set property autogeneratecolumns true:

dgv.autogeneratecolumns = true; dgv.datasource = dt;