如何过滤数据表中的特定列

Question

I Have to filter a particular column in my data table.

here is my code

 string Groupname = txtGroup.Text;
 DataTable dt1 = _objGetDataProcess.Getgroupname(Groupname);

In dt1 i am getting table like this

here i have to filter Item column alone.

Answer 1

You can use Linq-To-DataTable :

var filteredRows = dt1.AsEnumerable()
    .Where(row => row.Field<string>("Item") == itemTextToFilter);

... case-insensitive:

var filteredRows = dt1.AsEnumerable()
    .Where(row => string.Equals(row.Field<string>("Item"), itemTextToFilter,StringComparison.CurrentCultureIgnoreCase));

If you need a new DataTable use filteredRows.CopyToDataTable() .

If you want to find also sub-strings:

var filteredRows = dt1.AsEnumerable()
    .Where(row => row.Field<string>("Item").Contains(itemTextToFilter));

... case-insensitive:

var filteredRows = dt1.AsEnumerable()
    .Where(row => row.Field<string>("Item").IndexOf(itemTextToFilter, StringComparison.CurrentCultureIgnoreCase) >= 0);