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CSVHelper 导出CSV 格式
public class CSVHelper { System.Windows.Forms.SaveFileDialog saveFileDialog1;//保存 private string header = string.Empty;//标题 /// <summary> /// 初始化打印设置 /// </summary> /// <param name="printID"></param> protected void InitExportController(Dictionary<string, object> addition) { saveFileDialog1 = new System.Windows.Forms.SaveFileDialog(); saveFileDialog1.Filter = "导出CSV (*.csv)|*.csv"; saveFileDialog1.FilterIndex = 1; saveFileDialog1.RestoreDirectory = true; saveFileDialog1.CreatePrompt = false; saveFileDialog1.Title = "导出文件保存路径"; saveFileDialog1.RestoreDirectory = true;//保存对话框是否记忆上次打开的目录 header = addition["HeardTitle"].ToString(); saveFileDialog1.FileName = header; } /// <summary> /// 导出 /// </summary> /// <param name="dt">表格</param> /// <param name="strFileName">路径</param> public bool Export(Dictionary<string, object> addition, System.Data.DataTable dt) { if (!object.Equals(dt, null)) { InitExportController(addition); try { if (saveFileDialog1.ShowDialog() == DialogResult.OK) { string filename = saveFileDialog1.FileName; return ExportToSvc(addition, dt, filename); } } catch { saveFileDialog1.FileName = "请输入文件名称"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { string filename = saveFileDialog1.FileName; return ExportToSvc(addition, dt, filename); } } } return false; } /// <summary> /// 导出 /// </summary> /// <param name="gv">内容</param> /// <param name="strFileName">路径</param> public bool Export(Dictionary<string, object> addition, DataGridView gv) { if (gv.Rows.Count > 0) { InitExportController(addition); try { if (saveFileDialog1.ShowDialog() == DialogResult.OK) { string filename = saveFileDialog1.FileName; return ExportToSvc(addition, gv, filename); } } catch { saveFileDialog1.FileName = "请输入文件名称"; if (saveFileDialog1.ShowDialog() == DialogResult.OK) { string filename = saveFileDialog1.FileName; return ExportToSvc(addition, gv, filename); } } } return false; } /// <summary> /// 导出为svc文件,strFileName为要导出的csv格式文件的路径和文件名 /// </summary> /// <param name="addition">头部信息</param> /// <param name="dt">表格</param> /// <param name="strFileName">路径</param> protected bool ExportToSvc(Dictionary<string, object> addition, System.Data.DataTable dt, string strFileName) { string strPath = strFileName; if (File.Exists(strPath)) { File.Delete(strPath); } //先打印标头 StringBuilder strColu = new StringBuilder(); StringBuilder strValue = new StringBuilder(); int i = 0; try { StreamWriter sw = new StreamWriter(new FileStream(strPath, FileMode.CreateNew), Encoding.GetEncoding("GB2312")); if (addition.ContainsKey("HeardTitle")) { sw.WriteLine(addition["HeardTitle"].ToString()); } if (addition.ContainsKey("Content")) { sw.WriteLine(addition["Content"].ToString()); sw.WriteLine(); } for (i = 0; i <= dt.Columns.Count - 1; i++) { if (addition.ContainsKey(dt.Columns[i].ColumnName)) { strColu.Append(addition[dt.Columns[i].ColumnName].ToString().Trim()); } else { strColu.Append(dt.Columns[i].ColumnName); } strColu.Append(","); } strColu.Remove(strColu.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strColu); foreach (DataRow dr in dt.Rows) { strValue.Remove(0, strValue.Length);//移出 for (i = 0; i <= dt.Columns.Count - 1; i++) { strValue.Append(dr[i].ToString()); strValue.Append(","); } strValue.Remove(strValue.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strValue); } if (addition.ContainsKey("Foot")) { sw.WriteLine(); sw.WriteLine(addition["Foot"].ToString()); } sw.Close(); return true; } catch (Exception ex) { throw ex; } } /// <summary> /// 导出为svc文件,strFileName为要导出的csv格式文件的路径和文件名 /// </summary> /// <param name="addition">头部信息</param> /// <param name="gv">DataGridView控件</param> /// <param name="strFileName"></param> protected bool ExportToSvc(Dictionary<string, object> addition, DataGridView gv, string strFileName) { string strPath = strFileName; if (File.Exists(strPath)) { File.Delete(strPath); } //先打印标头 StringBuilder strColu = new StringBuilder(); StringBuilder strValue = new StringBuilder(); int i = 0; try { StreamWriter sw = new StreamWriter(new FileStream(strPath, FileMode.CreateNew), Encoding.GetEncoding("GB2312")); if (addition.ContainsKey("HeardTitle")) { sw.WriteLine(addition["HeardTitle"].ToString()); } if (addition.ContainsKey("Content")) { sw.WriteLine(addition["Content"].ToString()); sw.WriteLine(); } for (i = 0; i <= gv.Columns.Count - 1; i++) { if (gv.Columns[i].Visible == true) {//可见的列导出，隐藏的列过滤 strColu.Append(gv.Columns[i].HeaderText.Trim()); strColu.Append(","); } } strColu.Remove(strColu.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strColu); foreach (DataGridViewRow dr in gv.Rows) { strValue.Remove(0, strValue.Length);//移出 for (i = 0; i <= gv.Columns.Count - 1; i++) { if (gv.Columns[i].Visible == true) {//可见的导出 strValue.Append(dr.Cells[i].Value.ToString()); strValue.Append(","); } } strValue.Remove(strValue.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strValue); } if (addition.ContainsKey("Foot")) { sw.WriteLine(); sw.WriteLine(addition["Foot"].ToString()); } sw.Close(); return true; } catch (Exception ex) { throw ex; } } /// <summary> /// 导出CSV /// </summary> /// <param name="title">显示标题</param> /// <param name="name">文件名</param> /// <param name="dts">一至多个表源</param> /// <returns></returns> public bool Export(string title, string name, params DataTable[] dts) { bool result = false; if (dts != null && dts.Length > 0) { var dict = new Dictionary<string, object>(); dict["HeardTitle"] = name; InitExportController(dict); if (saveFileDialog1.ShowDialog() == DialogResult.OK) { try { using (StreamWriter sw = new StreamWriter(new FileStream(saveFileDialog1.FileName, FileMode.CreateNew), Encoding.GetEncoding("GB2312"))) { sw.WriteLine(title); foreach (DataTable dt in dts) { StringBuilder strValue = new StringBuilder(); StringBuilder strColu = new StringBuilder(); for (int i = 0; i <= dt.Columns.Count - 1; i++) { strColu.Append(dt.Columns[i].ColumnName); strColu.Append(","); } strColu.Remove(strColu.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strColu); foreach (DataRow dr in dt.Rows) { strValue.Remove(0, strValue.Length);//移出 for (int i = 0; i <= dt.Columns.Count - 1; i++) { strValue.Append(dr[i].ToString()); strValue.Append(","); } strValue.Remove(strValue.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strValue); } sw.WriteLine(); } } result = true; } catch (Exception exc) { Console.WriteLine(exc.Message); } } } return result; } /// <summary> /// 导出CSV /// </summary> /// <param name="title">显示标题</param> /// <param name="name">文件名</param> /// <param name="dts">一至多个表源</param> /// <returns></returns> public bool Export(string title, string name, DataSet ds) { bool result = false; if (ds != null && ds.Tables.Count > 0) { var dict = new Dictionary<string, object>(); dict["HeardTitle"] = name; InitExportController(dict); if (saveFileDialog1.ShowDialog() == DialogResult.OK) { try { using (StreamWriter sw = new StreamWriter(new FileStream(saveFileDialog1.FileName, FileMode.CreateNew), Encoding.GetEncoding("GB2312"))) { sw.WriteLine(title); foreach (DataTable dt in ds.Tables) { StringBuilder strValue = new StringBuilder(); StringBuilder strColu = new StringBuilder(); for (int i = 0; i <= dt.Columns.Count - 1; i++) { strColu.Append(dt.Columns[i].ColumnName); strColu.Append(","); } strColu.Remove(strColu.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strColu); foreach (DataRow dr in dt.Rows) { strValue.Remove(0, strValue.Length);//移出 for (int i = 0; i <= dt.Columns.Count - 1; i++) { strValue.Append(dr[i].ToString()); strValue.Append(","); } strValue.Remove(strValue.Length - 1, 1);//移出掉最后一个,字符 sw.WriteLine(strValue); } sw.WriteLine(); } } result = true; } catch (Exception exc) { Console.WriteLine(exc.Message); } } } return result; } }
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