ASP.NET导出Excel文件

时间:2022-09-06 05:40:19

第一种最常见,并且最简单的方式,直接把GridView导出,导出格式为文本表格形式。

protected void btnSaveExcel_Click(object sender, EventArgs e)
{
string FileName = "xxx";
System.IO.StringWriter objSW
= new System.IO.StringWriter();
System.Web.UI.HtmlTextWriter objHTW
= new System.Web.UI.HtmlTextWriter(objSW);
try
{
//設定格式
Response.Clear();
Response.Buffer
= true;
Response.AddHeader(
"content-disposition", string.Format("attachment; filename={0}", FileName));
Response.ContentType
= "application/ms-excel";// "application/vnd.ms-excel";
Response.Charset = "UTF-8";
this.EnableViewState = false; this.GridViewData.RenderControl(objHTW);
Response.Write(objSW.ToString());
Response.End();
}
catch (Exception ex)
{
string aa = ex.Message.ToString();
}
finally
{
objSW.Close();
objSW
= null;
objHTW.Close();
objHTW
= null;
}
}
///必须重载VerifyRenderingInServerForm, 不然会报错
public override void VerifyRenderingInServerForm(Control control)
{
//base.VerifyRenderingInServerForm(control);
}

第二种:不用安装Excel,生成原生Excel格式方法

如果你和我一样要实现不调用Excel组件实现Excel数据导出的话,那我严重向你推荐MyXls,MyXls是用C#开源项目,可以应用于asp.net 或者 .net应用程序上。它根据微软公开的Excle文档格式文件(BIFF),以二进制格式直接生成excel文档,支持Excel versions 97 - 2007 。这意味着你可以不用在服务器上安装office就能够以excle格式输出数据库中存储的数据了,这对于许多项目来说都是很有用的

 

第一步,当然是下在MyXls,地址:http://sourceforge.net/projects/myxls/

第二步,添加引用org.in2bits.MyXls.dll

第三步,实现数据导出,我这里是将一个DataTable作为数据导出,导出后内容格式和DataTable一致,具体代码如下:

        private void Output(DataTable dt)
{
org.in2bits.MyXls.XlsDocument doc
= new org.in2bits.MyXls.XlsDocument();
doc.FileName
= DateTime.Now.ToString().Replace("-", "").Replace(":", "").Replace(" ", "") + ".xls";//excel文件名称
org.in2bits.MyXls.Worksheet sheet = doc.Workbook.Worksheets.AddNamed("sheet1");//Excel工作表名称
org.in2bits.MyXls.Cells cells = sheet.Cells;
int colnum = dt.Columns.Count;//获取DataTable列数

for (int i = 0; i < colnum; i++)
{
cells.Add(
1, (i + 1), dt.Columns[i].Caption.ToString());//导出DataTable列名
}
for (int i = 0; i < dt.Rows.Count; i++)
{
for (int j = 0; j < colnum; j++)
{
cells.Add((i
+ 2), (j + 1), dt.Rows[i][j].ToString());
}
}
//doc.Save(@"D:\"); //保存到指定位置
doc.Send();//把写好的excel文件输出到客户端
}

生成多个WorkSheet

XlsDocument xls = new XlsDocument();//新建一个xls文档 
xls.FileName = "MyXlsDemo.xls";//设定Excel文件名

xls.SummaryInformation.Author
= "Terry Li"; //填加Excel文件作者信息
xls.SummaryInformation.Subject = "MyXls Demo";//填加文件主题信息
xls.DocumentSummaryInformation.Company = "in2bits.org";//填加文件公司信息

string sheetName = "第一个Sheet Demo";#region

string sheetName = "第一个Sheet Demo";
Worksheet sheet
= xls.Workbook.Worksheets.Add(sheetName);//填加名为"第一个Sheet Demo"的sheet页
Cells cells = sheet.Cells;//Cells实例是sheet页中单元格(cell)集合
//单元格1-base
Cell cell = cells.Add(2, 3, "");//设定第2行,第3例单元格的值
cell.HorizontalAlignment = HorizontalAlignments.Centered;//设定文字居中
cell.Font.FontName = "行楷";//设定字体
cell.Font.Height = 30 * 20;//设定字大小(字体大小是以 1/20 point 为单位的)
cell.UseBorder = true;//使用边框
cell.BottomLineStyle = 2;//设定边框底线为粗线
cell.BottomLineColor = Colors.Red;//设定颜色为红色
cell.RightLineStyle = 2;
cell.RightLineColor
= Colors.Red;



//cell的格式还可以定义在一个xf对象中
XF cellXF = xls.NewXF();//为xls生成一个XF实例(XF是cell格式对象)
cellXF.HorizontalAlignment = HorizontalAlignments.Centered;//设定文字居中
cellXF.Font.FontName = "隶书";//设定字体
cellXF.Font.Height = 30 * 20;//设定字大小(字体大小是以 1/20 point 为单位的)
cellXF.UseBorder = true;//使用边框
cellXF.BottomLineStyle = 2;//设定边框底线为粗线
cellXF.BottomLineColor = Colors.Green;//设定颜色为绿色
cellXF.LeftLineStyle = 2; //设定边框左线为粗线
cellXF.LeftLineColor = Colors.Green;

cell
= cells.Add(3, 3, "", cellXF);//以设定好的格式填加cell

cellXF.Font.FontName
= "仿宋_GB2312";
cellXF.BottomLineStyle
= 2; //设定边框底线为粗线
cellXF.BottomLineColor = Colors.Blue;//设定颜色为蓝色
cellXF.RightLineStyle = 2;//设定边框右线为粗线
cellXF.RightLineColor = Colors.Blue;//设定颜色为蓝色
cellXF.LeftLineStyle = 0;
cell
= cells.Add(4, 3, "", cellXF);//格式可以多次使用

//ColumnInfo colInfo = new ColumnInfo(xls, sheet);//生成列格式对象
////设定colInfo格式的起作用的列为第2列到第5列(列格式为0-base)
//colInfo.ColumnIndexStart = 1;//起始列为第二列
//colInfo.ColumnIndexEnd = 5;//终止列为第六列
//colInfo.Width = 15 * 256;//列的宽度计量单位为 1/256 字符宽
//sheet.AddColumnInfo(colInfo);//把格式附加到sheet页上(注:AddColumnInfo方法有点小问题,不给把colInfo对象多次附给sheet页)
//colInfo.ColumnIndexEnd = 6;//可以更改列对象的值
//ColumnInfo colInfo2 = new ColumnInfo(xls, sheet);//通过新生成一个列格式对象,才到能设定其它列宽度
//colInfo2.ColumnIndexStart = 7;
//colInfo2.ColumnIndexEnd = 8;
//colInfo2.Width = 20 * 256;
//sheet.AddColumnInfo(colInfo2);

MergeArea meaA
= new MergeArea(2, 3, 5, 7);//一个合并单元格实例(合并第2行、第5列 到 第3行、第7例)
sheet.AddMergeArea(meaA);//填加合并单元格
cellXF.VerticalAlignment = VerticalAlignments.Centered;
cellXF.Font.FontName
= "隶书";
//cellXF.Font.Height = 48 * 20;
//cellXF.Font.Bold = true;
cellXF.Pattern = 1;//设定单元格填充风格。如果设定为0,则是纯色填充(无色),1代表没有间隙的实色
cellXF.PatternBackgroundColor = Colors.Red;//填充的底色
cellXF.PatternColor = Colors.Green;//设定填充线条的颜色
cell = cells.Add(2, 5, "晋/陈寿", cellXF);
#endregion

sheet.Cells.Merge(
7, 9, 1, 4);
cell
= cells.Add(7, 1, "MyXls 合并单元格 Demo");
cell.HorizontalAlignment
= HorizontalAlignments.Centered;
cell.VerticalAlignment
= VerticalAlignments.Centered;

for (int sheetNumber = 1; sheetNumber <= 4; sheetNumber++)
{
sheetName
= "Sheet " + sheetNumber;
int rowMin = sheetNumber;
int rowCount = sheetNumber + 10;
int colMin = sheetNumber;
int colCount = sheetNumber + 10;
sheet
= xls.Workbook.Worksheets.Add(sheetName);
cells
= sheet.Cells;
for (int r = 0; r < rowCount; r++)
{
if (r == 0)
{
for (int c = 0; c < colCount; c++)
{
cells.Add(rowMin
+ r, colMin + c, "Column" + (c + 1)).Font.Bold = true;
}
}
else
{
for (int c = 0; c < colCount; c++)
{
int val = r + c;
cell
= cells.Add(rowMin + r, colMin + c, val+ ":51CTO五岁了!");
if (val % 2 != 0)
{
cell.HorizontalAlignment
= HorizontalAlignments.Centered;
cell.Font.FontName
= "Times New Roman";
cell.Font.Underline
= UnderlineTypes.Double;
cell.Font.ColorIndex
= 2;
cell.Rotation
= 45; //字符倾斜45度
}
}
}
}
}

xls.Send();
//XlsDocument.SendMethods.Inline

 

效果

ASP.NET导出Excel文件

该代码出自(http://terryli.blog.51cto.com/704315/392125