我已经使用xml代码创建并创建了excel文件，并通过电子邮件发送了该文件，但是当我打开从电子邮件下载的文件时，它显示“文件格式和'Repairorder.xls'扩展名不匹配。该文件可能是损坏或不安全。除非您信任其来源，否则请勿打开它。还是要打开它吗？”
下面是我的代码
var attachments = new List<KeyValuePair<string, byte[]>>();
private static string ExcelHeader()
{
// Excel header
var sb = new StringBuilder();
sb.Append(" <?xml version=\"1.0\"?>");
sb.Append("<?mso-application progid=\"Excel.Sheet\"?>");
sb.Append("<Workbook ");
sb.Append(" xmlns=\"urn:schemas-microsoft-com:office:spreadsheet\"");
sb.Append(" xmlns:o=\"urn:schemas-microsoft-com:office:office\"");
sb.Append(" xmlns:x=\"urn:schemas-microsoft-com:office:excel\"");
sb.Append(" xmlns:ss=\"urn:schemas-microsoft-com:office:spreadsheet\"");
sb.Append(" xmlns:html=\"http://www.w3.org/TR/REC-html40\">");
return sb.ToString();
}
public static string GetStyles()
{
return @" <Styles>
<Style ss:ID=""Default"" ss:Name=""Normal"">
<Alignment ss:Vertical=""Bottom""/>
<Borders/>
<Font/>
<Interior/>
<NumberFormat/>
<Protection/>
</Style>
<Style ss:ID=""s27"" ss:Name=""Hyperlink"">
<Font ss:Color=""#0000FF"" ss:Underline=""Single""/>
</Style>
<Style ss:ID=""s24"">
<Font x:Family=""Swiss"" ss:Bold=""1""/>
</Style>
<Style ss:ID=""s25"">
<Font x:Family=""Swiss"" ss:Italic=""1""/>
</Style>
<Style ss:ID=""s26"">
<Alignment ss:Horizontal=""Center"" ss:Vertical=""Bottom""/>
</Style>
</Styles>";
}
public static KeyValuePair<string, byte[]> CreateExcelSingleSheet(List<RepairOrderStatusObject> repairOrderStatusObjects, string componentName, int userId)
{
string xlsFileName = string.Format("RepairOrderStatus_dated_{0}_{1}.xls", componentName, DateTime.Now.ToString("MMMM_dd_yyyy")); // Excel file name.
var strExcelXml = new StringBuilder();
strExcelXml.Append(ExcelHeader());
strExcelXml.Append(GetStyles());
strExcelXml.Append(ConvertHTMLToExcelXML(ExcelWorkSheet(repairOrderStatusObjects, componentName, userId)));
strExcelXml.Append("</Workbook>\n");
var ms = new MemoryStream();
var writer = new StreamWriter(ms, Encoding.Unicode);
writer.Write(strExcelXml.ToString());
writer.Flush();
var buffer = new byte[ms.Length];
ms.Position = 0;
ms.Read(buffer, 0, buffer.Length);
writer.Close();
ms.Close();
return new KeyValuePair<string, byte[]>(xlsFileName, buffer);
}
private static string ExcelWorkSheet(List<RepairOrderStatusObject> repairOrderStatusObjects, string name, int userId)
{
var strExcelXml = new StringBuilder();
strExcelXml.Append("<Worksheet ss:Name=\"Repair Order Status List\"><Table><tr>");
List<ExportToExcelSetup> excelSetupList = ExportToExcelSetup.GetRepairOrderStatusUserFields(userId, repairOrderStatusObjects[0].ComponentType);
var onlySelected = excelSetupList.Where(x => x.IsSelected).ToList();
foreach (ExportToExcelSetup excelSetup in onlySelected)
{
strExcelXml.AppendFormat("<td>{0}</td>", excelSetup.Name);
}
strExcelXml.Append("</tr>");
//var sortingColumn = ExportToExcelSetup.GetRepairOrderStatusUserFieldSortingColum(userId, FokkerComponentType.Schiphol);
//var listsorted = repairOrderStatusObjects.OrderBy(q=> q.GetType().GetProperty(sortingColumn.Replace(" ","").Replace(".", "")).GetValue(q, null));
//string dbSortingColumn = ExportToExcelSetup.GetRepairOrderStatusUserFieldSortingColum(MyFokkerFleetPrincipal.CurrentPrincipal.UserID, FokkerComponentType.Schiphol);
//var sortingColumn = FindSortColumn(dbSortingColumn);
//var listsorted = repairOrderStatusObjects.OrderBy(q=> q.GetType().GetProperty(sortingColumn).GetValue(q, null));
foreach (RepairOrderStatusObject repairOrderStatusObject in repairOrderStatusObjects)
{
strExcelXml.Append("<tr>");
foreach (ExportToExcelSetup excelSetup in onlySelected)
{
object value;
try
{
if (((ExportToExcelFieldsEnum) excelSetup.ID) == ExportToExcelFieldsEnum.Messages)
{
value = repairOrderStatusObject.ComponentType == FokkerComponentType.Schiphol
? SchipholRepairOrderStatus.ShopFindings(repairOrderStatusObject.ID)
: repairOrderStatusObject.ShopFindingsAll;
value = Regex.Replace(value.ToString(), "<.*?>", " "); //Remove HTML-tags from the value
}
else
{
value = repairOrderStatusObject.GetType().GetProperty(
((ExportToExcelFieldsEnum)excelSetup.ID).ToString()).GetValue(repairOrderStatusObject, null);
}
}
catch (Exception)
{
value = "Unknown";
}
strExcelXml.AppendFormat("<td>{0}</td>", value == null?"": System.Web.HttpUtility.HtmlEncode(value.ToString()));
}
strExcelXml.Append("</tr>");
}
strExcelXml.Append("</Table></Worksheet>");
return strExcelXml.ToString();
}
public static string ConvertHTMLToExcelXML(string strHtml)
{
// Just to replace TR with Row
strHtml = strHtml.Replace("<tr>", "<Row ss:AutoFitHeight=\"1\">\n");
strHtml = strHtml.Replace("</tr>", "</Row>\n");
//replace the cell tags
strHtml = strHtml.Replace("<td>", "<Cell><Data ss:Type=\"String\">");
strHtml = strHtml.Replace("</td>", "</Data></Cell>\n");
return strHtml;
}
private static Attachment ConvertXlsToAttachment(string fileName, byte[] fileContents)
{
string directory = Settings.TempPath;
if (!Directory.Exists(directory)) Directory.CreateDirectory(directory);
string xlsFilePath = Path.Combine(directory, fileName);
File.WriteAllBytes(xlsFilePath, fileContents);
var fs = new FileStream(xlsFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
// Make a ContentType indicating that the file data
// that is attached is of a type and is named.
var ct = new ContentType
{
MediaType = "application/vnd.ms-excel",
Name = Path.GetFileName(xlsFilePath)
};
// Attachment.
return new Attachment(fs, ct);
}
private static Attachment ConvertXlsToAttachment(string fileName, byte[] fileContents)
{
string directory = Settings.TempPath;
if (!Directory.Exists(directory)) Directory.CreateDirectory(directory);
string xlsFilePath = Path.Combine(directory, fileName);
File.WriteAllBytes(xlsFilePath, fileContents);
var fs = new FileStream(xlsFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
// Make a ContentType indicating that the file data
// that is attached is of a type and is named.
var ct = new ContentType
{
MediaType = "application/vnd.ms-excel",
Name = Path.GetFileName(xlsFilePath)
};
// Attachment.
return new Attachment(fs, ct);
}
有帮助吗？
答案 0 :(得分：0)
尝试将其另存为.xml而不是.xls 这样，您就可以在没有该警告的情况下在Excel中打开它。