文件类：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Windows.Forms;
namespace DataHandle_Print_Export_
{
class FileProcess
{
private FileProcess() { }
public static readonly FileProcess Instance = new FileProcess();
/// <summary>
/// 说明：打开文件提示框
/// </summary>
/// <param name="openType">打开文件类型</param>
/// <returns>打开路径</returns>
public string OpenDialog(string openType)
{
OpenFileDialog openFileDialog = new OpenFileDialog();
openFileDialog.Filter = openType;
openFileDialog.RestoreDirectory = true;
openFileDialog.FilterIndex = 1;
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
return openFileDialog.FileName;
}
return "";
}
/// <summary>
/// 说明：保存文件提示框（传入后缀返回保存地址）
/// </summary>
/// <param name="ext">保存扩展名</param>
/// <returns>返回保存路径</returns>
public string SaveDialog(string ext)
{
string localFilePath = "", fileNameExt = "", newFileName = "", FilePath = "";
SaveFileDialog saveFileDialog = new SaveFileDialog();
//设置文件类型
//书写规则如：txt files(*.txt)|*.txt
saveFileDialog.Filter = string.Format("{0} File(*.{0})|*.{0}|所有文件(*.*)|*.*");
//设置默认文件名（可以不设置）
saveFileDialog.FileName = DateTime.Now.ToString("yyyyMMddHHmmss") + "." + ext;
//获取或设置一个值，该值指示如果用户省略扩展名，对话框是否自动在文件名中添加扩展名。
saveFileDialog.AddExtension = true;
//保存对话框是否记忆上次打开的目录
saveFileDialog.RestoreDirectory = true;
DialogResult result = saveFileDialog.ShowDialog();
if (result == DialogResult.OK)
{
//获得文件路径
localFilePath = saveFileDialog.FileName.ToString();
return localFilePath;
}
return "";
}
/// <summary>
/// 说明：文件流保存
/// </summary>
/// <param name="stream">需要保存的文件流</param>
/// <param name="path">文件路径</param>
public void FileSteamSave(Stream stream, string path)
{
Stream sourceStream = stream;
FileStream targetStream = null;
using (targetStream = new FileStream(path, FileMode.Create, FileAccess.Write, FileShare.None))
{
const int bufferLen = 4096;
byte[] buffer = new byte[bufferLen];
int count = 0;
while ((count = sourceStream.Read(buffer, 0, bufferLen)) > 0)
{
targetStream.Write(buffer, 0, count);
}
targetStream.Close();
sourceStream.Close();
}
}
public void ExploreExcel(DevExpress.XtraGrid.Views.Grid.GridView gridView, string fileName)
{
bool isExport = true;
SaveFileDialog saveFile = new SaveFileDialog();
saveFile.Title = "请选择文件存放路径";
saveFile.Filter = "Excel文档(*.xls)|*.xls|Excel文档(*.xlsx)|*.xlsx";
saveFile.FileName = fileName;
if (saveFile.ShowDialog() == DialogResult.OK)
{
DevExpress.XtraPrinting.XlsExportOptions options = new DevExpress.XtraPrinting.XlsExportOptions();
options.TextExportMode = DevExpress.XtraPrinting.TextExportMode.Text;
options.SheetName = fileName;
gridView.OptionsPrint.AutoWidth = false;
gridView.AppearancePrint.Row.Font = new System.Drawing.Font("宋体", 9);
try
{
gridView.ExportToXls(saveFile.FileName, options);
}
catch (Exception ex)
{
MessageBox.Show("文件已打开，正在使用中，导出失败", "提示", MessageBoxButtons.OKCancel, MessageBoxIcon.Information, MessageBoxDefaultButton.Button2);
isExport = false;
}
if (isExport)
{
if (MessageBox.Show("导出成功，是否打开文件？", "询问",MessageBoxButtons.YesNo, MessageBoxIcon.Question) == DialogResult.Yes)
System.Diagnostics.Process.Start(saveFile.FileName);
}
}
}
}
}
客户端调用
FileProcess.Instance.ExploreExcel(gridView1, "Test" + DateTime.Now.ToString("yyyyMMddHHmmss"));