c# - Unable to Copy datacolumn from one data table to another -

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how can copy 1 data column 1 data table new datatable. when try it, error column 'xxx' belongs datatable.? 

datacolumn = datatable1.columns[1]; datatable2 = new datatable(); datatable2.columns.add(datacolumn);

thanks in advance

you cannot copy datacolumns. you'll need create new datacolumn in new datatable same data type in old datatable's column, , need run loop bring in data old datatable new datatable.

see following code. assumes datatables have same number of rows. 

 datatable dt1 = new datatable(); datatable dt2 = new datatable();  dt2.columns.add("columna", dt1.columns["columna"].datatype);  (int = 0; < dt1.rows.count; i++) {     dt2.rows[i]["columna"] = dt1.rows[i]["columna"]; }

also, if data copying reference types , not value types might want see if .clone() method available type, or make 1 yourself. doing 'this = that' in loop not work on reference types.


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