Question

My data table dt has columns are as below

Name, Value, key, IsMarkets, IsBudgets, IsPrograms

I have 3 check boxes chkbxBudgetsSearch,chkbxMarketsSearch,chkbxProgramsSearch

I want dt to be filtered on following condition

if chkbxMarketsSearch.IsChecked == true
all rows with IsMarkets=True should be displayed

if chkbxBudgetsSearch.IsChecked == true
all rows with IsBudgets=True should be displayed

similarly for programs

and if both check boxes are clicked then
all rows with IsMarkets=True and IsBudgets=False / IsMarkets=False and IsBudgets=True
/ IsMarkets=True and IsBudgets=True should be displayed

Note : its need not be only IsMarkets=True and IsBudgets=True

Its close to union operation
Can anyone wrire linq for this ?

Answer 1

EDIT: Okay, now that the question has changed:

var result = Enumerable.Empty<DataRow>();
var linqTable = table.AsEnumerable();
if (chkbxMarketsSearch.IsChecked)
{
    results = results.Union(linqTable.Where(row => row.Field<bool>("IsMarkets"));
}
if (chkbxBudgetsSearch.IsChecked)
{
    results = results.Union(linqTable.Where(row => row.Field<bool>("IsBudgets"));
}
if (chkbxProgramsSearch.IsChecked)
{
    results = results.Union(linqTable.Where(row => row.Field<bool>("IsPrograms"));
}
// Probably best to call `ToList()` here before doing much more work...

Note that if none of the checkboxes is ticked, you won’t get any results.