C# 将DataTable的数据导出

/// <summary>
/// 导出DataTable
/// </summary>
/// <param name="dataTable">待导出的数据</param>
/// <param name="filePath">导出的完整路径</param>
public static void DataTableExport(DataTable dataTable, string filePath)
{
if (dataTable.Rows.Count > 0)
{
//表头
string title = string.Empty;
//用于创建文件
FileStream fileStream = new FileStream(filePath, FileMode.OpenOrCreate);
//用于写入内容
StreamWriter streamWriter = new StreamWriter(new BufferedStream(fileStream), System.Text.Encoding.Default);

for (int i = 0; i < dataTable.Columns.Count; i++)
{
title += dataTable.Columns[i].ColumnName + "\t"; //栏位：自动跳到下一单元格
}
title = title.Substring(0, title.Length - 1) + "\n";//取完表头，换行
streamWriter.Write(title);//表头写入

foreach (DataRow row in dataTable.Rows)
{
string line = string.Empty;
for (int i = 0; i < dataTable.Columns.Count; i++)
{
line += row[i].ToString().Trim() + "\t"; //内容：自动跳到下一单元格
}
line = line.Substring(0, line.Length - 1) + "\n";//取完一行内容，换行
streamWriter.Write(line);//内容写入
}
streamWriter.Close();
fileStream.Close();
}
else
{
throw new Exception("没有数据");
}
}

<span style="white-space:pre">	</span>    DateTime xlsTime = DateTime.Now;
//导出的目录
string directory = Server.MapPath(@"/tempxls/" + xlsTime.ToString("yyyyMMdd") + "/");
//是否存在文件夹,不存在则创建
if (!Directory.Exists(directory))
{
Directory.CreateDirectory(directory);
}
//导出的完整路径
string filePath = directory + xlsTime.ToString("HHmmss") + ".xls";

try
{
DataTableExport(DATATABLE, filePath);
}
catch (Exception ex)
{
//空数据异常&其他异常
}