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
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!");
}
其他回答
如何在OneDrive上使用C#创建Excel(.xslx)文件而不安装Microsoft Office
Microsoft Graph API提供文件和Excel API,用于为企业和消费者帐户创建和修改存储在OneDrive中的Excel文件。Microsoft.Graph NuGet包提供了许多用于使用File和Excel API的接口。
{
Name = "myExcelFile.xslx",
File = new Microsoft.Graph.File()
};
// Create an empty file in the user's OneDrive.
var excelWorkbookDriveItem = await graphClient.Me.Drive.Root.Children.Request().AddAsync(excelWorkbook);
// Add the contents of a template Excel file.
DriveItem excelDriveItem;
using (Stream ms = ResourceHelper.GetResourceAsStream(ResourceHelper.ExcelTestResource))
{
//Upload content to the file. ExcelTestResource is an empty template Excel file.
//https://graph.microsoft.io/en-us/docs/api-reference/v1.0/api/item_uploadcontent
excelDriveItem = await graphClient.Me.Drive.Items[excelWorkbookDriveItem.Id].Content.Request().PutAsync<DriveItem>(ms);
}
此时,您现在已经在用户(企业或消费者)或组的OneDrive中创建了一个Excel文件。现在,您可以使用Excel API对Excel文件进行更改,而无需使用Excel,也无需了解Excel XML格式。
我正在使用以下代码创建excel 2007文件,该文件创建了该文件并写入该文件,但当我打开该文件时,它给我的错误是exel无法打开文件bcz文件可能已损坏或文件扩展名不兼容。但如果我使用.xls作为文件,它可以工作
for (int i = 0; i < TotalFile; i++)
{
Contact.Clear();
if (innerloop == SplitSize)
{
for (int j = 0; j < SplitSize; j++)
{
string strContact = DSt.Tables[0].Rows[i * SplitSize + j][0].ToString();
Contact.Add(strContact);
}
string strExcel = strFileName + "_" + i.ToString() + ".xlsx";
File.WriteAllLines(strExcel, Contact.ToArray());
}
}
也参考链接
http://dotnet-magic.blogspot.in/2011/10/createformat-excel-file-from-cnet.html
您可以在Visual Studio上安装OpenXml nuget包。以下是将数据表导出到excel文件的代码:
Imports DocumentFormat.OpenXml
Imports DocumentFormat.OpenXml.Packaging
Imports DocumentFormat.OpenXml.Spreadsheet
Public Class ExportExcelClass
Public Sub New()
End Sub
Public Sub ExportDataTable(ByVal table As DataTable, ByVal exportFile As String)
' Create a spreadsheet document by supplying the filepath.
' By default, AutoSave = true, Editable = true, and Type = xlsx.
Dim spreadsheetDocument As SpreadsheetDocument = spreadsheetDocument.Create(exportFile, SpreadsheetDocumentType.Workbook)
' Add a WorkbookPart to the document.
Dim workbook As WorkbookPart = spreadsheetDocument.AddWorkbookPart
workbook.Workbook = New Workbook
' Add a WorksheetPart to the WorkbookPart.
Dim Worksheet As WorksheetPart = workbook.AddNewPart(Of WorksheetPart)()
Worksheet.Worksheet = New Worksheet(New SheetData())
' Add Sheets to the Workbook.
Dim sheets As Sheets = spreadsheetDocument.WorkbookPart.Workbook.AppendChild(Of Sheets)(New Sheets())
Dim data As SheetData = Worksheet.Worksheet.GetFirstChild(Of SheetData)()
Dim Header As Row = New Row()
Header.RowIndex = CType(1, UInt32)
For Each column As DataColumn In table.Columns
Dim headerCell As Cell = createTextCell(table.Columns.IndexOf(column) + 1, 1, column.ColumnName)
Header.AppendChild(headerCell)
Next
data.AppendChild(Header)
Dim contentRow As DataRow
For i As Integer = 0 To table.Rows.Count - 1
contentRow = table.Rows(i)
data.AppendChild(createContentRow(contentRow, i + 2))
Next
End Sub
Private Function createTextCell(ByVal columnIndex As Integer, ByVal rowIndex As Integer, ByVal cellValue As Object) As Cell
Dim cell As Cell = New Cell()
cell.DataType = CellValues.InlineString
cell.CellReference = getColumnName(columnIndex) + rowIndex.ToString
Dim inlineString As InlineString = New InlineString()
Dim t As Text = New Text()
t.Text = cellValue.ToString()
inlineString.AppendChild(t)
cell.AppendChild(inlineString)
Return cell
End Function
Private Function createContentRow(ByVal dataRow As DataRow, ByVal rowIndex As Integer) As Row
Dim row As Row = New Row With {
.rowIndex = CType(rowIndex, UInt32)
}
For i As Integer = 0 To dataRow.Table.Columns.Count - 1
Dim dataCell As Cell = createTextCell(i + 1, rowIndex, dataRow(i))
row.AppendChild(dataCell)
Next
Return row
End Function
Private Function getColumnName(ByVal columnIndex As Integer) As String
Dim dividend As Integer = columnIndex
Dim columnName As String = String.Empty
Dim modifier As Integer
While dividend > 0
modifier = (dividend - 1) Mod 26
columnName = Convert.ToChar(65 + modifier).ToString() & columnName
dividend = CInt(((dividend - modifier) / 26))
End While
Return columnName
End Function
End Class
Syncfusion Essential XlsIO可以做到这一点。它对Microsoft office没有依赖性,并且对不同的平台也有特定的支持。
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代码示例:
//Creates a new instance for ExcelEngine.
ExcelEngine excelEngine = new ExcelEngine();
//Loads or open an existing workbook through Open method of IWorkbooks
IWorkbook workbook = excelEngine.Excel.Workbooks.Open(fileName);
//To-Do some manipulation|
//To-Do some manipulation
//Set the version of the workbook.
workbook.Version = ExcelVersion.Excel2013;
//Save the workbook in file system as xlsx format
workbook.SaveAs(outputFileName);
如果您符合资格(收入低于100万美元),可通过社区许可计划免费获得整套控件。注:我为Syncfusion工作。
我编写了一个简单的代码,通过使用System.IO.StreamWriter将数据集导出到excel,而不使用excel对象。
下面是代码,它将从数据集中读取所有表,并将它们逐一写入工作表。我从这篇文章中得到了帮助。
public static void exportToExcel(DataSet source, string fileName)
{
const string endExcelXML = "</Workbook>";
const string startExcelXML = "<xml version>\r\n<Workbook " +
"xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"\r\n" +
" xmlns:o=\"urn:schemas-microsoft-com:office:office\"\r\n " +
"xmlns:x=\"urn:schemas- microsoft-com:office:" +
"excel\"\r\n xmlns:ss=\"urn:schemas-microsoft-com:" +
"office:spreadsheet\">\r\n <Styles>\r\n " +
"<Style ss:ID=\"Default\" ss:Name=\"Normal\">\r\n " +
"<Alignment ss:Vertical=\"Bottom\"/>\r\n <Borders/>" +
"\r\n <Font/>\r\n <Interior/>\r\n <NumberFormat/>" +
"\r\n <Protection/>\r\n </Style>\r\n " +
"<Style ss:ID=\"BoldColumn\">\r\n <Font " +
"x:Family=\"Swiss\" ss:Bold=\"1\"/>\r\n </Style>\r\n " +
"<Style ss:ID=\"StringLiteral\">\r\n <NumberFormat" +
" ss:Format=\"@\"/>\r\n </Style>\r\n <Style " +
"ss:ID=\"Decimal\">\r\n <NumberFormat " +
"ss:Format=\"0.0000\"/>\r\n </Style>\r\n " +
"<Style ss:ID=\"Integer\">\r\n <NumberFormat " +
"ss:Format=\"0\"/>\r\n </Style>\r\n <Style " +
"ss:ID=\"DateLiteral\">\r\n <NumberFormat " +
"ss:Format=\"mm/dd/yyyy;@\"/>\r\n </Style>\r\n " +
"</Styles>\r\n ";
System.IO.StreamWriter excelDoc = null;
excelDoc = new System.IO.StreamWriter(fileName);
int sheetCount = 1;
excelDoc.Write(startExcelXML);
foreach (DataTable table in source.Tables)
{
int rowCount = 0;
excelDoc.Write("<Worksheet ss:Name=\"" + table.TableName + "\">");
excelDoc.Write("<Table>");
excelDoc.Write("<Row>");
for (int x = 0; x < table.Columns.Count; x++)
{
excelDoc.Write("<Cell ss:StyleID=\"BoldColumn\"><Data ss:Type=\"String\">");
excelDoc.Write(table.Columns[x].ColumnName);
excelDoc.Write("</Data></Cell>");
}
excelDoc.Write("</Row>");
foreach (DataRow x in table.Rows)
{
rowCount++;
//if the number of rows is > 64000 create a new page to continue output
if (rowCount == 64000)
{
rowCount = 0;
sheetCount++;
excelDoc.Write("</Table>");
excelDoc.Write(" </Worksheet>");
excelDoc.Write("<Worksheet ss:Name=\"" + table.TableName + "\">");
excelDoc.Write("<Table>");
}
excelDoc.Write("<Row>"); //ID=" + rowCount + "
for (int y = 0; y < table.Columns.Count; y++)
{
System.Type rowType;
rowType = x[y].GetType();
switch (rowType.ToString())
{
case "System.String":
string XMLstring = x[y].ToString();
XMLstring = XMLstring.Trim();
XMLstring = XMLstring.Replace("&", "&");
XMLstring = XMLstring.Replace(">", ">");
XMLstring = XMLstring.Replace("<", "<");
excelDoc.Write("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
excelDoc.Write(XMLstring);
excelDoc.Write("</Data></Cell>");
break;
case "System.DateTime":
//Excel has a specific Date Format of YYYY-MM-DD followed by
//the letter 'T' then hh:mm:sss.lll Example 2005-01-31T24:01:21.000
//The Following Code puts the date stored in XMLDate
//to the format above
DateTime XMLDate = (DateTime)x[y];
string XMLDatetoString = ""; //Excel Converted Date
XMLDatetoString = XMLDate.Year.ToString() +
"-" +
(XMLDate.Month < 10 ? "0" +
XMLDate.Month.ToString() : XMLDate.Month.ToString()) +
"-" +
(XMLDate.Day < 10 ? "0" +
XMLDate.Day.ToString() : XMLDate.Day.ToString()) +
"T" +
(XMLDate.Hour < 10 ? "0" +
XMLDate.Hour.ToString() : XMLDate.Hour.ToString()) +
":" +
(XMLDate.Minute < 10 ? "0" +
XMLDate.Minute.ToString() : XMLDate.Minute.ToString()) +
":" +
(XMLDate.Second < 10 ? "0" +
XMLDate.Second.ToString() : XMLDate.Second.ToString()) +
".000";
excelDoc.Write("<Cell ss:StyleID=\"DateLiteral\">" +
"<Data ss:Type=\"DateTime\">");
excelDoc.Write(XMLDatetoString);
excelDoc.Write("</Data></Cell>");
break;
case "System.Boolean":
excelDoc.Write("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
excelDoc.Write(x[y].ToString());
excelDoc.Write("</Data></Cell>");
break;
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.Byte":
excelDoc.Write("<Cell ss:StyleID=\"Integer\">" +
"<Data ss:Type=\"Number\">");
excelDoc.Write(x[y].ToString());
excelDoc.Write("</Data></Cell>");
break;
case "System.Decimal":
case "System.Double":
excelDoc.Write("<Cell ss:StyleID=\"Decimal\">" +
"<Data ss:Type=\"Number\">");
excelDoc.Write(x[y].ToString());
excelDoc.Write("</Data></Cell>");
break;
case "System.DBNull":
excelDoc.Write("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
excelDoc.Write("");
excelDoc.Write("</Data></Cell>");
break;
default:
throw (new Exception(rowType.ToString() + " not handled."));
}
}
excelDoc.Write("</Row>");
}
excelDoc.Write("</Table>");
excelDoc.Write(" </Worksheet>");
sheetCount++;
}
excelDoc.Write(endExcelXML);
excelDoc.Close();
}
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