Question

How can I filter data from dataset to datatable?
like the code->

DataRow[] dr = DS.Tables[0]
    .Select("STAGENAME='Develop' AND DEVLAPSEDAYS IS NOT NULL");        

How can I use datatable here?

following code doesn`t reflect changes->

DataTable FilteredDataD = DS.Tables[0];
if (FilteredDataD.Rows.Count > 0) {
    FilteredDataD.DefaultView.RowFilter = "STAGENAME='Develop' AND DEVLAPSEDAYS IS NOT NULL";
    FilteredDataD.DefaultView.ToTable();
}

Is is possible to remove a column using above filter,like “STAGENAME=’Develop’ AND DEVLAPSEDAYS IS NOT NULL” + FilteredDataD.column(“col_name”)…
Suppose I have 5 columns display only 4,I can`t remove col_name from my query.Is there a way?

Reply

Answer 1

Try using LINQ instead:

var table = DS.Tables[0].AsEnumerable().Where(
    r => r.Field<string>("STAGENAME") == "Develop" && r.Field<int?>("DEVLAPSEDAYS").HasValue).AsDataView().ToTable();

EDIT Changed AsDataView to AsDataView() for syntactical accuracy.
EDIT Provided .NET 2.0 compatible solution

DataTable table = DS.Tables[0];
if (table.Rows.Count > 0)
{
    table.DefaultView.RowFilter = "STAGENAME = 'DEVELOP' AND DEVLAPSEDAYS IS NOT NULL";
    table = table.DefaultView.ToTable(); 
}