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using System;
 
public class Test
{
	public static void Main()
	{
		// your code goes here
	}
 
	private void button3_Click(object sender, EventArgs e)
        {
            try
            {
                DataRow dr = nBA_DataSet.Tables["Players"].NewRow();
                dr["ORANK"] = 1;
                dr["NAME"] = "Michael Jordan";
                dr["GP"] = 52;
                dr["FGM"] = 18.6;
                dr["FGA"] = 25.4;
                dr["FTM"] = 6.3;
                dr["FTA"] = 8.0;
                dr["THREEPTM"] = 5.2;
                dr["PTS"] = 38.6;
                dr["REB"] = 10.6;
                dr["AST"] = 7.6;
                dr["ST"] = 4.6;
                dr["BLK"] = 3.6;
                dr["TO"] = 2.6;
                dr["STATUS"] = "in";
                nBA_DataSet.Tables["Players"].Rows.Add(dr);
                playersTableAdapter.Update(nBA_DataSet);
                MessageBox.Show("insert success");
            }
            catch (InvalidCastException error)
            {
                MessageBox.Show(error.Message.ToString());
            }
        }
}

prog.cs(14,17): error CS0246: The type or namespace name `DataRow' could not be found. Are you missing a using directive or an assembly reference?
prog.cs(15,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(16,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(17,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(18,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(19,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(20,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(21,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(22,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(23,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(24,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(25,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(26,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(27,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(28,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(29,17): error CS0841: A local variable `dr' cannot be used before it is declared
prog.cs(30,17): error CS0103: The name `nBA_DataSet' does not exist in the current context
prog.cs(31,17): error CS0103: The name `playersTableAdapter' does not exist in the current context
prog.cs(32,17): error CS0103: The name `MessageBox' does not exist in the current context
prog.cs(36,17): error CS0103: The name `MessageBox' does not exist in the current context
Compilation failed: 20 error(s), 0 warnings

Standard output is empty