How to get all rows from Data table

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C#

C#4.0

how to get all rows from data table for particular column in c#

Posted 23-Apr-13 1:29am

kiran pericherla

Updated 23-Apr-13 1:35am

Kenneth Haugland

v3

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2 solutions

Solution 2

Try this:-

String col="LastName";

DataTable tableWithOnlySelectedColumns =
    new DataView(table).ToTable(false, col);

Posted 23-Apr-13 1:38am

TrushnaK

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StianSandberg · Accepted Answer · 2013-04-23T01:34:00

Datatable as in a database? Then you could use a SqlCommand and a DataReader to get all the values. (in this example as strings)

C#

var values = new List<string>();
var conn = new SqlConnection("connectionstring");
using (var cmd = new SqlCommand("select col1 from myTable", conn))
{
    conn.Open();
    var dr = cmd.ExecuteReader();
    while (dr.Read())
    {
        values.Add(dr.GetString(0));
    }
    conn.Close();
}

Or if it's from a DataTable object:

C#

List<string> values = tbl.AsEnumerable().Select(r => r.Field<string>("MyColumn")).ToList();