DataTable转CSV

/// <summary>
/// 将DataTable转换成CSV文件
/// </summary>
/// <param name="dt">DataTable</param>
/// <param name="filePath">文件路径</param>
public static void SaveCSV(DataTable dt, string filePath)
{
FileStream fs = new FileStream(filePath + dt.TableName + ".csv", System.IO.FileMode.Create, System.IO.FileAccess.Write);
StreamWriter sw = new StreamWriter(fs, System.Text.Encoding.Default);
string data = "";

//写出列名称
for (int i = 0; i < dt.Columns.Count; i++)
{
data += dt.Columns[i].ColumnName.ToString();
if (i < dt.Columns.Count - 1)
{
data += ",";
}
}
sw.WriteLine(data);

//写出各行数据
for (int i = 0; i < dt.Rows.Count; i++)
{
data = "";
for (int j = 0; j < dt.Columns.Count; j++)
{
data += dt.Rows[i][j].ToString();
if (j < dt.Columns.Count - 1)
{
data += ",";
}
}
sw.WriteLine(data);
}
sw.Close();
fs.Close();
}