public static StringWriter DataSetToExcel(DataTable source, string fileName)
{
StringBuilder strb = new StringBuilder();
//position = 0;
string startExcelXML = new DataGridViewExcel().ExcelHeader();
startExcelXML += "<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=\"0.00\"/>\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=\"yyyy-mm-dd hh:mm:ss;@\"/>\r\n </Style>\r\n " +
"</Styles>\r\n ";
const string endExcelXML = "</Workbook>";
int rowCount = 0;
int sheetCount = 1;
strb.Append(startExcelXML);
strb.Append("<Worksheet ss:Name=\"Sheet" + sheetCount + "\">");
strb.Append("<Table>");
strb.Append("<Row>");
for (int x = 0; x < source.Columns.Count; x++)
{
strb.Append("<Cell ss:StyleID=\"BoldColumn\"><Data ss:Type=\"String\">");
strb.Append(source.Columns[x].ColumnName);
strb.Append("</Data></Cell>");
}
strb.Append("</Row>");
foreach (DataRow x in source.Rows)
{
rowCount++;
//if the number of rows is > 64000 create a new page to continue output
if (rowCount == 64000)
{
rowCount = 0;
sheetCount++;
strb.Append("</Table>");
strb.Append(" </Worksheet>");
strb.Append("<Worksheet ss:Name=\"Sheet" + sheetCount + "\">");
strb.Append("<Table>");
}
strb.Append("<Row>");
for (int y = 0; y < source.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("<", "<");
strb.Append("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
strb.Append(XMLstring);
strb.Append("</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";
strb.Append("<Cell ss:StyleID=\"DateLiteral\">" +
"<Data ss:Type=\"DateTime\">");
strb.Append(XMLDatetoString);
strb.Append("</Data></Cell>");
break;
case "System.Boolean":
strb.Append("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
strb.Append(x[y].ToString());
strb.Append("</Data></Cell>");
break;
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.Byte":
strb.Append("<Cell ss:StyleID=\"Integer\">" +
"<Data ss:Type=\"Number\">");
strb.Append(x[y].ToString());
strb.Append("</Data></Cell>");
break;
case "System.Decimal":
case "System.Double":
strb.Append("<Cell ss:StyleID=\"Integer\">" +
"<Data ss:Type=\"Number\">");
strb.Append(x[y].ToString());
strb.Append("</Data></Cell>");
break;
case "System.DBNull":
strb.Append("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
strb.Append("");
strb.Append("</Data></Cell>");
break;
default:
throw (new Exception(rowType.ToString() + " not handled."));
}
//position = y;
//ProgressEventArgs pe = new ProgressEventArgs(position);
//OnProgressChange(pe);
}
strb.Append("</Row>");
}
strb.Append("</Table>");
strb.Append(" </Worksheet>");
strb.Append(endExcelXML);
StringWriter sw = new StringWriter();
sw.Write(strb.ToString());
sw.Close();
return(sw);
}
public static StringWriter CreateExcelTableByXml(DataTable source, ArrayList list, Hashtable hTable)
{
StringBuilder strb = new StringBuilder();
//position = 0;
string startExcelXML = new DataGridViewExcel().ExcelHeader();
startExcelXML += "<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=\"0.00\"/>\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=\"yyyy-mm-dd hh:mm:ss;@\"/>\r\n </Style>\r\n " +
"</Styles>\r\n ";
const string endExcelXML = "</Workbook>";
int rowCount = 0;
int sheetCount = 1;
strb.Append(startExcelXML);
strb.Append("<Worksheet ss:Name=\"Sheet" + sheetCount + "\">");
strb.Append("<Table>");
#region header
strb.Append("<Row>");
for (int i = 0; i < list.Count; i++)
{
strb.Append("<Cell ss:StyleID=\"BoldColumn\"><Data ss:Type=\"String\">");
strb.Append(list[i].ToString().Split('$')[1]);
strb.Append("</Data></Cell>");
}
strb.Append("</Row>");
#endregion
foreach (DataRow x in source.Rows)
{
rowCount++;
//if the number of rows is > 64000 create a new page to continue output
if (rowCount == 64000)
{
rowCount = 0;
sheetCount++;
strb.Append("</Table>");
strb.Append(" </Worksheet>");
strb.Append("<Worksheet ss:Name=\"Sheet" + sheetCount + "\">");
strb.Append("<Table>");
}
#region body
strb.Append("<Row>");
for (int i = 0; i < list.Count; i++)
{
string field = list[i].ToString().Split('$')[0];
System.Type rowType;
rowType = x[field].GetType();
switch (rowType.ToString())
{
case "System.String":
string XMLstring = x[field].ToString();
XMLstring = XMLstring.Trim();
XMLstring = XMLstring.Replace("&", "&");
XMLstring = XMLstring.Replace(">", ">");
XMLstring = XMLstring.Replace("<", "<");
strb.Append("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
strb.Append(XMLstring);
strb.Append("</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[field];
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";
strb.Append("<Cell ss:StyleID=\"DateLiteral\">" +
"<Data ss:Type=\"DateTime\">");
strb.Append(XMLDatetoString);
strb.Append("</Data></Cell>");
break;
case "System.Boolean":
strb.Append("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
strb.Append(x[field].ToString());
strb.Append("</Data></Cell>");
break;
case "System.Int16":
case "System.Int32":
case "System.Int64":
case "System.Byte":
strb.Append("<Cell>" +
"<Data ss:Type=\"Number\">");
strb.Append(x[field].ToString());
strb.Append("</Data></Cell>");
break;
case "System.Decimal":
case "System.Double":
strb.Append("<Cell>" +
"<Data ss:Type=\"Number\">");
strb.Append(x[field].ToString());
strb.Append("</Data></Cell>");
break;
case "System.DBNull":
strb.Append("<Cell ss:StyleID=\"StringLiteral\">" +
"<Data ss:Type=\"String\">");
strb.Append("");
strb.Append("</Data></Cell>");
break;
default:
if (Regex.IsMatch(x[field].ToString(), "^([+-]?)\\d*\\.?\\d+$"))
{
strb.Append("<Cell><Data ss:Type=\"Number\">");
strb.Append(x[field].ToString());
strb.Append("</Data></Cell>");
}
else
{
strb.Append("<Cell><Data ss:Type=\"String\">");
strb.Append(x[field].ToString());
strb.Append("</Data></Cell>");
}
break;
}
}
strb.Append("</Row>");
#endregion
}
#region footer
if (hTable != null)
{
//sum
string keyStr = "";
foreach (string key in hTable.Keys)
{
keyStr += key + ",";
}
if (keyStr != "")
{
string[] keyArr = keyStr.TrimEnd(',').Split(',');
foreach (string s in keyArr)
{
hTable[s] = source.Compute("sum(" + s + ")", "");
}
}
strb.Append("<Row>");
for (int i = 0; i < list.Count; i++)
{
string field = list[i].ToString().Split('$')[0];
if (hTable.ContainsKey(field))
{
strb.Append("<Cell><Data ss:Type=\"Number\">");
strb.Append(hTable[field]);
strb.Append("</Data></Cell>");
}
else
{
strb.Append("<Cell><Data ss:Type=\"String\"></Data></Cell>");
}
}
strb.Append("</Row>");
}
#endregion
strb.Append("</Table>");
strb.Append(" </Worksheet>");
strb.Append(endExcelXML);
StringWriter sw = new StringWriter();
sw.Write(strb.ToString());
sw.Close();
return(sw);
}