说明:进程因未处理的异常而终止。异常信息:System.InvalidOperationException 堆栈:在 System.Data.Linq.Table 1[[System._Canon , mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].DeleteOnSubmit( System._Canon) 在 ReportSender .EmailReportApp.Execute() 在 System.Threading.ThreadHelper.ThreadStart_Context(System.Object) 在 System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean) 在 System.Threading .ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object) 在 System.Threading.ThreadHelper.ThreadStart()
1[[System.__Canon, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089]].CheckReadOnly()
at System.Data.Linq.Table
尝试删除以下查询中的记录时出现上述错误:此错误的确切含义是什么以及如何解决?
private void Execute()
{
try
{
// Check for a new record
DataClasses1DataContext dc = new DataClasses1DataContext();
foreach (var item in dc.reportsSent1s)
{
string matchedCaseNumber = item.CaseNumberKey;
(new MyReportRenderer()).RenderTest(matchedCaseNumber);
dc.reportsSent1s.DeleteOnSubmit(item);
dc.SubmitChanges();
}
}
catch (ThreadAbortException ex)
{
_log.WriteEntry(ex.StackTrace.ToString());
}
}
其余代码如下:
public class MyReportRenderer
{
private rs2005.ReportingService2005 rs;
private rs2005Execution.ReportExecutionService rsExec;
public void RenderTest(String matchedCaseNumber)
{
string HistoryID = null;
string deviceInfo = null;
string encoding = String.Empty;
string mimeType = String.Empty;
string extension = String.Empty;
rs2005Execution.Warning[] warnings = null;
string[] streamIDs = null;
rs = new rs2005.ReportingService2005();
rsExec = new rs2005Execution.ReportExecutionService();
rs.Credentials = System.Net.CredentialCache.DefaultCredentials;
rsExec.Credentials = System.Net.CredentialCache.DefaultCredentials;
rs.Url = "http://***.**.***.**/ReportServer_DEVELOPMENT/ReportService2005.asmx";
rsExec.Url = "http://***.**.***.**/ReportServer_DEVELOPMENT/ReportExecution2005.asmx";
try
{
// Load the selected report.
rsExec.LoadReport("/LawDept/LawDeptTIC", HistoryID);
// Set the parameters for the report needed.
rs2005Execution.ParameterValue[] parameters = new rs2005Execution.ParameterValue[1];
parameters[0] = new rs2005Execution.ParameterValue();
parameters[0].Name = "CaseNumberKey";
parameters[0].Value = matchedCaseNumber;
rsExec.SetExecutionParameters(parameters, "en-us");
// get pdf of report
Byte[] results = rsExec.Render("PDF", deviceInfo,
out extension, out encoding,
out mimeType, out warnings, out streamIDs);
//pass paramaters for email
DataClasses1DataContext db = new DataClasses1DataContext();
var matchedBRT = (from c in db.GetTable<vw_ProductClientInfo>()
where c.CaseNumberKey == matchedCaseNumber
select c.BRTNumber).SingleOrDefault();
var matchedAdd = (from c in db.GetTable<vw_ProductClientInfo>()
where c.CaseNumberKey == matchedCaseNumber
select c.Premises).SingleOrDefault();
//send email with attachment
MailMessage message = new MailMessage("Rts@acmets.com", "gge.grer@gmail.com", "Report for BRT # " + matchedAdd, "Attached if the Tax Information Certificate for the aboved captioned BRT Number");
MailAddress copy = new MailAddress("cts@gmail.com");
message.CC.Add(copy);
SmtpClient emailClient = new SmtpClient("***.**.***.**");
message.Attachments.Add(new Attachment(new MemoryStream(results), String.Format("{0}" + matchedBRT + ".pdf", "BRT")));
emailClient.Send(message);
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
}