如:txt里的数据是这样的
name   age    sex
chen   18     1
wang   16     2

name、age、sex 都是数据库表里的字段。
我现在要这样的效果：点击“打开”按钮，然后选择txt文档，之后这些数据就会insert到表里面去。
是不是要用到OpenFileDialog openFileDialog = new OpenFileDialog()这些，求一个完整的C#代码，非常感谢。。。

顶一个。

public interface DataParser
    {
        DataTable Parse(string fileName);
    }

    public class PlainDataParser : DataParser
    {
        private const char separator = '\t';

        #region DataParser 成员

        public DataTable Parse(string fileName)
        {
            DataTable dt = new DataTable();
            using (StreamReader reader = File.OpenText(fileName))
            {
                string temp;
                string[] parts;
                if (!reader.EndOfStream)
                {
                    temp = reader.ReadLine();
                    parts = temp.Split(separator);
                    foreach (string s in parts)
                    {
                        dt.Columns.Add(s);
                    }
                    while (reader.Peek() > -1)
                    {
                        temp = reader.ReadLine();
                        parts = temp.Split(separator);
                        dt.LoadDataRow(parts, true);
                    }
                }
                else
                {

                }
            }
            return dt;
        }

        #endregion
    }