C#通用类库--导出数据（比其他方式快200倍）

做数据库处理的时候，经常需要将数据导出，一般都是导出到EXCEL，网上很多方法都是用EXCEL组件，自己感觉效率比较低，于是重新用流处理的方式导出数据，在数据量大的情况下，速度不知道快了多少，非常快，而且导出格式可以是EXCEL，WORD，TXT等，自由设定，不多说，贴出代码，直接传入对应参数即可！

//类名:EcanOutPutData
//作用:导出数据（二进制流的形式）
//作者：刘典武
//时间：2010-12-01

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Data ;

namespace Ecan
{
public class EcanOutPutData
{
/// <summary>
/// 从listbox中导出数据
/// </summary>
/// <param name="lbox">listbox控件</param>
/// <param name="txtTitle">导出数据的标题</param>
/// <param name="filter">导出数据的格式(拓展名)</param>
public void outPutListBoxData(ListBox lbox,string txtTitle, string filter)
{
SaveFileDialog save = new SaveFileDialog();
save.Filter = "user files("+filter +")|" + filter;
save.Title = "导出文件到";

if (save.ShowDialog() == DialogResult.OK)
{
Stream myStream = save.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("GB2312"));
try
{
//写标题
sw.WriteLine(txtTitle);
//循环写内容
for (int i = 0; i < lbox.Items.Count; i++)
{
string tempStr = "";
tempStr += lbox.Items[i].ToString();
tempStr += "\t";
sw.WriteLine(tempStr);
}
MessageBox.Show("导出数据成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
sw.Close();
myStream.Close();
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
finally
{
sw.Close();
myStream.Close();
}
}
}

/// <summary>
/// 导出DataSet数据
/// </summary>
/// <param name="ds">数据源</param>
/// <param name="txtTitle">导出数据的标题</param>
/// <param name="filter">导出数据的格式</param>

public void outPutDataSet(DataSet ds, string txtTitle, string filter)
{
SaveFileDialog save = new SaveFileDialog();
save.Filter = "user files(" + filter + ")|" + filter;
save.Title = "导出文件到";

if (save.ShowDialog() == DialogResult.OK)
{
Stream myStream = save.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("GB2312"));
try
{
//写标题
sw.WriteLine(txtTitle);
//写数据字段
string tempTitle = "";
for (int i = 0; i < ds.Tables[0].Columns.Count;i++ )
{
if (i > 0)
{
tempTitle += "\t";
}
tempTitle += ds.Tables[0].Columns[i].ColumnName;
}
sw.WriteLine(tempTitle);

//循环写内容
for (int j = 0; j < ds.Tables [0].Rows .Count ; j++)
{
string tempStr = "";
for (int k = 0; k < ds.Tables[0].Columns.Count; k++)
{
if (k > 0)
{ tempStr += "\t"; }
tempStr += ds.Tables[0].Rows[j][k].ToString();
}
sw.WriteLine(tempStr);
}
MessageBox.Show("导出数据成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
sw.Close();
myStream.Close();
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
finally
{
sw.Close();
myStream.Close();
}
}
}

/// <summary>
/// 导出DataGridView数据
/// </summary>
/// <param name="dgv">DataGridView控件</param>
/// <param name="txtTitle">导出数据标题</param>
/// <param name="filter">导出数据格式</param>

public void outPutDataGridViewData(DataGridView dgv, string txtTitle, string filter)
{
DataSet myds =(DataSet ) dgv.DataSource;
this.outPutDataSet(myds, txtTitle, filter);
}

/// <summary>
/// 导出DataGridView数据
/// </summary>
/// <param name="dgv">DataGridView控件</param>
/// <param name="filter">导出数据格式</param>

public void outPutDataGridViewData(DataGridView dgv, string filter)
{
SaveFileDialog save = new SaveFileDialog();
save.Filter = "user files(" + filter + ")|" + filter;
save.Title = "导出文件到";

if (save.ShowDialog() == DialogResult.OK)
{
Stream myStream = save.OpenFile();
StreamWriter sw = new StreamWriter(myStream, System.Text.Encoding.GetEncoding("GB2312"));
try
{
//写数据字段
string tempTitle = "";
for (int i = 0; i <dgv.Columns .Count ; i++)
{
if (i > 0)
{
tempTitle += "\t";
}
tempTitle += dgv.Columns[i].Name;
//tempTitle += ds.Tables[0].Columns[i].ColumnName;
}
sw.WriteLine(tempTitle);

//循环写内容
for (int j = 0; j <dgv.Rows .Count ;j++)
{
string tempStr = "";
for (int k = 0; k < dgv.Columns.Count; k++)
{
if (k > 0)
{ tempStr += "\t"; }
tempStr += dgv.Rows[j].Cells[k].Value.ToString();
}
sw.WriteLine(tempStr);
}
MessageBox.Show("导出数据成功！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
sw.Close();
myStream.Close();
}
catch (Exception ee)
{
MessageBox.Show(ee.Message);
}
finally
{
sw.Close();
myStream.Close();
}
}
}
}
}
一个C#资源分享平台，专业分享学习高质量代码，每周期布置学习任务，激发学习C#兴趣！(QQ群：128874886)