csharp: DataTable export to Excel,Word,csv etc

http://code.msdn.microsoft.com/office/Export-GridView-to-07c9f836

https://exporter.codeplex.com/

 /// <summary>        /// 塗聚文修改        /// </summary>        /// <param name="dt"></param>        /// <param name="Response"></param>        /// <param name="filename"></param>        public static void Convertword(DataTable dt, HttPResponse Response, string filename)        {            Response.Clear();            Response.AddHeader("content-disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8) + ".doc");            Response.Charset = "utf-8";            Response.Cache.SetCacheability(HttpCacheability.NoCache);            Response.ContentType = "application/vnd.word";            System.IO.StringWriter stringWrite = new System.IO.StringWriter();            System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);            System.Web.UI.WebControls.GridView dg = new System.Web.UI.WebControls.GridView();            dg.DataSource = dt;            dg.DataBind();            dg.RenderControl(htmlWrite);            Response.Write(stringWrite.ToString());            Response.End();            //HttpContext.Current.ApplicationInstance.CompleteRequest();        }        /// <summary>        ///         /// </summary>        /// <param name="dt"></param>        /// <param name="Response"></param>        /// <param name="filename"></param>        public static void Convertexcel(DataTable dt, HttpResponse Response, string filename)        {            Response.Clear();            Response.AddHeader("content-disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8) + ".xls");//            Response.Charset = "utf-8";            Response.Cache.SetCacheability(HttpCacheability.NoCache);            Response.ContentType = "application/vnd.ms-excel";            System.IO.StringWriter stringWrite = new System.IO.StringWriter();            System.Web.UI.HtmlTextWriter htmlWrite = new System.Web.UI.HtmlTextWriter(stringWrite);            System.Web.UI.WebControls.DataGrid dg = new System.Web.UI.WebControls.DataGrid();            dg.DataSource = dt;            dg.DataBind();            dg.RenderControl(htmlWrite);            Response.Write(stringWrite.ToString());            Response.End();            //HttpContext.Current.ApplicationInstance.CompleteRequest();        }        /// <summary>        ///         /// </summary>        /// <param name="dataTable"></param>        /// <param name="Response"></param>        /// <param name="filename"></param>        public static void ConvertCSV(DataTable dataTable, HttpResponse Response, string filename)        {            Response.Clear();            Response.Buffer = true;            Response.AddHeader("content-disposition", "attachment;filename=" + System.Web.HttpUtility.UrlEncode(filename, System.Text.Encoding.UTF8) + ".csv");            Response.Charset = "utf-8";            Response.Cache.SetCacheability(HttpCacheability.NoCache);            Response.ContentType = "Application/x-msexcel";            StringBuilder sb = new StringBuilder();            if (dataTable.Columns.Count != 0)            {                foreach (DataColumn column in dataTable.Columns)                {                    sb.Append(column.ColumnName + ',');                }                sb.Append("\r\n");                foreach (DataRow row in dataTable.Rows)                {                    foreach (DataColumn column in dataTable.Columns)                    {                        if (row[column].ToString().Contains(",") == true)                        {                            row[column] = row[column].ToString().Replace(",", "");                        }                        sb.Append(row[column].ToString() + ',');                    }                    sb.Append("\r\n");                }            }            Response.Write(sb.ToString());            Response.End();            //HttpContext.Current.ApplicationInstance.CompleteRequest();        }

winform:

 /// <summary>        /// winform        /// Encoding导出无问题        /// 涂聚文测试        /// </summary>        /// <param name="dgv"></param>        /// <param name="fileName"></param>        public static void ExportToCSV(DataGridView dgv, string fileName)        {            if (dgv.Rows.Count < 1)            {                MessageBox.Show("没有记录！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);                return;            }            SaveFileDialog sfDialog = new SaveFileDialog();            sfDialog.Filter = "CSV文件(*.csv)|*.csv|文本文件(*.txt)|*.txt|所有文件(*.*)|*.*";            sfDialog.FilterIndex = 0;            sfDialog.FileName = fileName;            if (sfDialog.ShowDialog() == DialogResult.OK)            {                string strFileName = sfDialog.FileName;                StreamWriter sw = new StreamWriter(strFileName, false, Encoding.Unicode);                string strLine = "";                foreach (DataGridViewColumn col in dgv.Columns)                {                    if (col.Visible)                    {                        strLine += "\"" + col.HeaderText.Trim().Replace("\"", "\\\"") + "\"" + "\t";                    }                }                strLine = strLine.Substring(0, strLine.Length - 1);                sw.WriteLine(strLine);                sw.Flush();                foreach (DataGridViewRow dgvr in dgv.Rows)                {                    strLine = "";                    foreach (DataGridViewCell dgvc in dgvr.Cells)                    {                        if (dgvc.Visible)                        {                            if (dgvc.Value == null)                            {                                strLine += "\t";                            }                            else                            {                                strLine += "\"" + dgvc.Value.ToString().Trim().Replace("\"","\"\"") + "\"" + "\t";                            }                        }                    }                    sw.WriteLine(strLine);                    sw.Flush();                }                sw.Close();                MessageBox.Show(string.Format("数据已成功导出至\n{0}\n文件中!", strFileName), "导出成功", MessageBoxButtons.OK, MessageBoxIcon.Information);            }        }