解决excel2007文件使用excel2003打开文件格式不兼容问题
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public void ExportToExcel(DataSet source, string fileName)
{
System.IO.StreamWriter excelDoc;
excelDoc = new System.IO.StreamWriter(fileName);
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 ";
const string endExcelXML = "</Workbook>";
int rowCount = 0;
int sheetCount = 1;
#region -- 格式 --
/*
<xml version>
<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
xmlns:o="urn:schemas-microsoft-com:office:office"
xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">
<Styles>
<Style ss:ID="Default" ss:Name="Normal">
<Alignment ss:Vertical="Bottom"/>
<Borders/>
<Font/>
<Interior/>
<NumberFormat/>
<Protection/>
</Style>
<Style ss:ID="BoldColumn">
<Font x:Family="Swiss" ss:Bold="1"/>
</Style>
<Style ss:ID="StringLiteral">
<NumberFormat ss:Format="@"/>
</Style>
<Style ss:ID="Decimal">
<NumberFormat ss:Format="0.0000"/>
</Style>
<Style ss:ID="Integer">
<NumberFormat ss:Format="0"/>
</Style>
<Style ss:ID="DateLiteral">
<NumberFormat ss:Format="mm/dd/yyyy;@"/>
</Style>
</Styles>
<Worksheet ss:Name="Sheet1">
</Worksheet>
</Workbook>
*/
#endregion
excelDoc.Write(startExcelXML);
excelDoc.Write("<Worksheet ss:Name=/"Sheet" + sheetCount + "/">");
excelDoc.Write("<Table>");
excelDoc.Write("<Row>");
for(int x = 0; x < source.Tables[0].Columns.Count; x++)
{
excelDoc.Write("<Cell ss:StyleID=/"BoldColumn/"><Data ss:Type=/"String/">");
excelDoc.Write(source.Tables[0].Columns[x].ColumnName);
excelDoc.Write("</Data></Cell>");
}
excelDoc.Write("</Row>");
foreach(DataRow x in source.Tables[0].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=/"Sheet" + sheetCount + "/">");
excelDoc.Write("<Table>");
}
excelDoc.Write("<Row>"); //ID=" + rowCount + "
for(int y = 0; y < source.Tables[0].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>");
this.progressBar1.Value=rowCount;
}
excelDoc.Write("</Table>");
excelDoc.Write(" </Worksheet>");
excelDoc.Write(endExcelXML);
excelDoc.Close();
}
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