c# - How do I exclude the default named column having no data in my excelsheet which I am fetching in a dataset -


i having excel sheet multiple rows , columns fetching in dataset in .net application(using c#). when see returned dataset through simple select query, excel sheet having required columns want , there blank columns in between them default given name f1, f2, f3 , on. want remove these columns , required columns want. in advance.

try datatable , dataview:

datatable oldtable = dataset.tables[0]; datatable newtable = oldtable.defaultview.totable(false, "only columns want", "only columns want");

with columns names dynamic might try this:

for (int col = datatable.columns.count - 1; col >= 0; col--) {   bool removecolumn = true;   foreach (datarow row in datatable.rows)   {     if (!row.isnull(col))     {       removecolumn = false;       break;     }   }   if (removecolumn)     datatable.columns.removeat(col); }

or shorter linq version:

for (var col = datatable.columns.count - 1; col >= 0; col--)     {         bool removecolumn = datatable.rows.cast<datarow>().all(row => row.isnull(col));         if (removecolumn)             datatable.columns.removeat(col);     }

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