利用ASP.NET输出指定内容的WORD、EXCEL、TXT、HTM等类型的文档很容易的。主要分为三步来完成。
一、定义文档类型、字符编码
Response.Clear();
Response.Buffer= true;
Response.Charset="utf-8";
//下面这行很重要， attachment 参数表示作为附件下载，您可以改成 online在线打开
//filename=FileFlow.xls 指定输出文件的名称，注意其扩展名和指定文件类型相符，可以为：.doc || .xls || .txt ||.htm
Response.AppendHeader("Content-Disposition","attachment;filename=FileFlow.xls");
Response.ContentEncoding=System.Text.Encoding.GetEncoding("utf-8");
//Response.ContentType指定文件类型 可以为application/ms-excel || application/ms-word || application/ms-txt || application/ms-html || 或其他浏览器可直接支持文档
Response.ContentType = "application/ms-excel";
this.EnableViewState = false;
二、定义一个输入流
System.IO.StringWriter oStringWriter = new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);
三、将目标数据绑定到输入流输出
this.RenderControl(oHtmlTextWriter);
//this 表示输出本页，你也可以绑定datagrid,或其他支持obj.RenderControl()属性的控件
Response.Write(oStringWriter.ToString());
Response.End();
导入导出类
public class DataUtil
{
public DataUtil()
{
}
#region 导入数据到GridView
/// <summary>
/// 导入数据到GridView
/// </summary>
/// <param name="fileName">源Excel文件</param>
/// <param name="gridview">目标GridView</param>
/// <param name="keyColIndex">导入主键列</param>
/// <param name="rtnMsg">返回消息</param>
/// <returns>返回没有导入的数据DataSet</returns>
public static DataSet ExcelToGridView(string fileName, GridView gridview, int keyColIndex,string rtnMsg)
{
DataSet ds = null ;
string errMsg = string.Empty;
try
{
if ( ! fileName.EndsWith(".xls"))
{
errMsg += "只能导入Excel格式的文件。";
}
ds = ExcelHelper.ExcelToDS(fileName);
DataTable dt = ds.Tables[0];
for (int i = 0; i < gridview.Rows.Count; i++)
{
if (gridview.Rows[i].RowType != DataControlRowType.DataRow)
{
continue;
}
string key = gridview.Rows[i].Cells[keyColIndex].Text;
if (String.IsNullOrEmpty(key))
{
continue;
}
int k = 0;
for (; k < dt.Rows.Count; k++)
{
if (dt.Rows[k][gridview.Columns[keyColIndex].HeaderText].ToString().Replace(" ", "").Replace(" ", "") == key)
{
break;
}
}
if (k == dt.Rows.Count)
{
continue;
}
else
{
for (int j = 0; j < gridview.Columns.Count; j++)
{
if (gridview.Columns[j].Visible == false)
{
continue;
}
if (gridview.Rows[i].Cells[j].Controls.Count == 0)
{
continue;
}
for (int m = 0; m < gridview.Rows[i].Cells[j].Controls.Count; m++)
{
if (gridview.Rows[i].Cells[j].Controls[m].Visible == false)
{
continue;
}
if (gridview.Rows[i].Cells[j].Controls[m] is TextBox)
{
if (!dt.Columns.Contains(gridview.Columns[j].HeaderText))
{
continue;
}
TextBox txt = gridview.Rows[i].Cells[j].Controls[m] as TextBox;
string temp = dt.Rows[k][gridview.Columns[j].HeaderText].ToString();
try
{
// int intTemp = int.Parse(temp);
// txt.Text = intTemp.ToString();
txt.Text = temp; //Translate(temp);
}
catch (Exception)
{
}
break;
}
}
}
dt.Rows[k].Delete();
dt.AcceptChanges();
}
}
}
catch (Exception ex)
{
errMsg +="导入失败." + ex.Message ;
}
rtnMsg = errMsg;
return ds;
}
/// <summary>
/// 导入数据到GridView
/// </summary>
/// <param name="fileUpload">文件上传控件对象</param>
/// <param name="filePath">要存放文件的服务器路径</param>
/// <param name="gridview">目标GridView</param>
/// <param name="keyColIndex">用于导入的主键列</param>
/// <returns>返回没有导入的数据DataSet</returns>
public static DataSet ExcelToGridView(FileUpload fileUpload, string filePath, GridView gridview, int keyColIndex, string strMsg)
{
string errMsg = string.Empty;
DataSet ds = null ;
try
{
if ( ! filePath.EndsWith("\\"))
{
filePath += "\\";
}
string fileName = fileUpload.FileName.Replace(".xls", "") + "_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xls";
string fullFileName = filePath + fileName;
fileUpload.SaveAs(fullFileName);
ds = ExcelToGridView(fullFileName, gridview, keyColIndex,errMsg);
if ( errMsg != string.Empty)
{
errMsg += "将数据导入GridView失败." + errMsg ;
};
}
catch (Exception ex)
{
errMsg += "上传excel文件失败." ;
}
strMsg = errMsg;
return ds ;
}
#endregion
/// <summary>
/// 选定主键列后，用这方法将重复行用黄色背景标志
/// </summary>
/// <param name="gridview">目标GridView</param>
/// <param name="keyColIndex">导入主键列</param>
public static void MarkRepetitionRows(GridView gridView, int keyColIndex)
{
for (int i = 0; i < gridView.Rows.Count; i++)
{
for (int j = i + 1; j < gridView.Rows.Count; j++)
{
if (gridView.Rows[i].Cells[keyColIndex].Text == gridView.Rows[j].Cells[keyColIndex].Text)
{
gridView.Rows[i].BackColor = Color.Yellow;
gridView.Rows[j].BackColor = Color.Yellow;
}
}
}
}
}
