如何使用C#创建Excel电子表格而不需要在运行代码的计算机上安装Excel?
当前回答
我找到了另一个没有太多依赖性的库:MiniExcel。
您可以使用DataTables作为电子表格创建数据集(表格的名称是电子表格的名称),并通过以下方式将其保存到.xlsx文件
using var stream = File.Create(filePath);
stream.SaveAs(dataSet);
or
MiniExcel.SaveAs(filePath, dataSet);
它还提供Excel文件的读取,并支持CSV文件的读取和写入。
其他回答
public class GridViewExportUtil
{
public static void Export(string fileName, GridView gv)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader(
"content-disposition", string.Format("attachment; filename={0}", fileName));
HttpContext.Current.Response.ContentType = "application/ms-excel";
using (StringWriter sw = new StringWriter())
{
using (HtmlTextWriter htw = new HtmlTextWriter(sw))
{
// Create a form to contain the grid
Table table = new Table();
// add the header row to the table
if (gv.HeaderRow != null)
{
GridViewExportUtil.PrepareControlForExport(gv.HeaderRow);
table.Rows.Add(gv.HeaderRow);
}
// add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
GridViewExportUtil.PrepareControlForExport(row);
table.Rows.Add(row);
}
// add the footer row to the table
if (gv.FooterRow != null)
{
GridViewExportUtil.PrepareControlForExport(gv.FooterRow);
table.Rows.Add(gv.FooterRow);
}
// render the table into the htmlwriter
table.RenderControl(htw);
// render the htmlwriter into the response
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
}
}
/// <summary>
/// Replace any of the contained controls with literals
/// </summary>
/// <param name="control"></param>
private static void PrepareControlForExport(Control control)
{
for (int i = 0; i < control.Controls.Count; i++)
{
Control current = control.Controls[i];
if (current is LinkButton)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
}
else if (current is ImageButton)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
}
else if (current is HyperLink)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
}
else if (current is DropDownList)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
}
else if (current is CheckBox)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
}
if (current.HasControls())
{
GridViewExportUtil.PrepareControlForExport(current);
}
}
}
}
嗨,这个解决方案是将网格视图导出到excel文件中,这可能会帮助您
您可以使用此库创建格式良好的Excel文件:http://officehelper.codeplex.com/documentation参见以下示例:
using (ExcelHelper helper = new ExcelHelper(TEMPLATE_FILE_NAME, GENERATED_FILE_NAME))
{
helper.Direction = ExcelHelper.DirectionType.TOP_TO_DOWN;
helper.CurrentSheetName = "Sheet1";
helper.CurrentPosition = new CellRef("C3");
//the template xlsx should contains the named range "header"; use the command "insert"/"name".
helper.InsertRange("header");
//the template xlsx should contains the named range "sample1";
//inside this range you should have cells with these values:
//<name> , <value> and <comment>, which will be replaced by the values from the getSample()
CellRangeTemplate sample1 = helper.CreateCellRangeTemplate("sample1", new List<string> {"name", "value", "comment"});
helper.InsertRange(sample1, getSample());
//you could use here other named ranges to insert new cells and call InsertRange as many times you want,
//it will be copied one after another;
//even you can change direction or the current cell/sheet before you insert
//typically you put all your "template ranges" (the names) on the same sheet and then you just delete it
helper.DeleteSheet("Sheet3");
}
示例如下:
private IEnumerable<List<object>> getSample()
{
var random = new Random();
for (int loop = 0; loop < 3000; loop++)
{
yield return new List<object> {"test", DateTime.Now.AddDays(random.NextDouble()*100 - 50), loop};
}
}
如果您从代码中创建数据表或数据网格视图,则可以使用此简单方法保存所有数据。不建议使用此方法,但它可以100%工作,即使您没有在计算机中安装MS Excel。
try
{
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "Excel Documents (*.xls)|*.xls";
saveFileDialog1.FileName = "Employee Details.xls";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
string fname = saveFileDialog1.FileName;
StreamWriter wr = new StreamWriter(fname);
for (int i = 0; i <DataTable.Columns.Count; i++)
{
wr.Write(DataTable.Columns[i].ToString().ToUpper() + "\t");
}
wr.WriteLine();
//write rows to excel file
for (int i = 0; i < (DataTable.Rows.Count); i++)
{
for (int j = 0; j < DataTable.Columns.Count; j++)
{
if (DataTable.Rows[i][j] != null)
{
wr.Write(Convert.ToString(getallData.Rows[i][j]) + "\t");
}
else
{
wr.Write("\t");
}
}
//go to next line
wr.WriteLine();
}
//close file
wr.Close();
}
}
catch (Exception)
{
MessageBox.Show("Error Create Excel Sheet!");
}
前段时间,我在NPOI上创建了一个DLL。使用它非常简单:
IList<DummyPerson> dummyPeople = new List<DummyPerson>();
//Add data to dummyPeople...
IExportEngine engine = new ExcelExportEngine();
engine.AddData(dummyPeople);
MemoryStream memory = engine.Export();
你可以在这里阅读更多。
顺便说一句,它是100%开源的。随时使用、编辑和共享;)
http://www.codeproject.com/KB/cs/Excel_and_C_.aspx<=为什么不使用内置的windows功能,只需在服务器上安装office,您安装的任何应用程序都可以自动化。
使用本机方法就容易多了。
如果安装了它,你就可以使用它,这是windows中最棒、使用率最低的功能,在过去的好日子里,它被称为COM,它为你节省了大量时间和痛苦。
或者更简单地使用ref lib MS供应品-http://csharp.net-informations.com/excel/csharp-create-excel.htm
推荐文章
- 实体框架核心:在上一个操作完成之前,在此上下文中开始的第二个操作
- 如何为构造函数定制Visual Studio的私有字段生成快捷方式?
- 为什么Visual Studio 2015/2017/2019测试运行器没有发现我的xUnit v2测试
- 如何使用JSON确保字符串是有效的JSON。网
- AppSettings从.config文件中获取值
- 通过HttpClient向REST API发布一个空体
- 如何检查IEnumerable是否为空或空?
- 自动化invokerrequired代码模式
- 没有ListBox。SelectionMode="None",是否有其他方法禁用列表框中的选择?
- 在c#代码中设置WPF文本框的背景颜色
- 在c#中,什么是单子?
- c#和Java中的泛型有什么不同?和模板在c++ ?
- c#线程安全快速(est)计数器
- 如何将此foreach代码转换为Parallel.ForEach?
- 如何在iis7应用程序池中设置。net Framework 4.5版本