A DataTable object resembles a database table and has a collection of DataColumns and DataRows.
The DataTable is a central object in the ADO.NET library. Other objects that use the DataTable include the DataSet and the DataView.
To play the demo, you can create a new console application, then add your code as shown below.
class Program
{
static void Main(string[] args)
{
//Create a new datatable
using (DataTable dt = new DataTable("Test"))
{
//Add columns to datatable
dt.Columns.Add("ID", typeof(int));
dt.PrimaryKey = new DataColumn[] { dt.Columns["ID"] };
dt.Columns.Add("Dosage", typeof(int));
dt.Columns.Add("Drug", typeof(string));
dt.Columns.Add("Patient", typeof(string));
dt.Columns.Add("Date", typeof(DateTime));
//Add data to datatable
dt.Rows.Add(1, 1, "Indocin", "David", DateTime.Now);
dt.Rows.Add(2, 2, "Enebrel", "Sam", DateTime.Now);
dt.Rows.Add(4, 3, "Hydralazine", "Christoff", DateTime.Now);
dt.Rows.Add(7, 4, "Combivent", "Janet", DateTime.Now);
dt.Rows.Add(7, 5, "Dilantin", "Melanie", DateTime.Now);
//Using foreach to get data from datatable
foreach (DataRow dr in dt.Rows)
{
Console.WriteLine("ID = {4} Dosage = {0}, Drug = {1}, Patient = {2}, Date = {3}", dr["Dosage"], dr["Drug"], dr["Patient"], dr["Date"], dr["ID"]);
}
}
Console.ReadKey();
}
}We will create a new DataTable, then add columns to the DataTable.
Finally, Add DataRow to the DataTable, if you want to get data from datatable in c#, you can use the foreach loop to get datarow in datatable.
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