How to create a DataTable in C# and how to add rows?

Question

How do create a DataTable in C#?

I did like this:

 DataTable dt = new DataTable();
 dt.clear();
 dt.Columns.Add(\"Name\");
 dt.Columns.Add(\"Marks\")         


        

Answer 1

Question 1: How do create a DataTable in C#?

Answer 1:

DataTable dt = new DataTable(); // DataTable created

// Add columns in your DataTable
dt.Columns.Add("Name");
dt.Columns.Add("Marks");

Note: There is no need to Clear() the DataTable after creating it.

Question 2: How to add row(s)?

Answer 2: Add one row:

dt.Rows.Add("Ravi","500");

Add multiple rows: use ForEach loop

DataTable dt2 = (DataTable)Session["CartData"]; // This DataTable contains multiple records
foreach (DataRow dr in dt2.Rows)
{
    dt.Rows.Add(dr["Name"], dr["Marks"]);
}