下載FileStream對象無法打開下載對話框

Question

嗯，我已經嘗試了很多東西來解決這個問題，但沒有。

我開發了一個Reporting Service（2005）並進行了部署。

這個報告將被所有訪問一個網站（這是一個互聯網網站，所以不會被intranet訪問）在框架3.5上開發的每個人使用（但我認爲框架的版本不是問題的根源）。

我有其他問題與身份驗證，解決方法包括在我的網站上使用FileStream類。

ReportExecutionService rs = new ReportExecutionService(); 
rs.Credentials = System.Net.CredentialCache.DefaultCredentials; 
rs.Url = "http://MyServer/ReportServer/ReportExecution2005.asmx"; 

arguments 
byte[] result = null; 
string reportPath = "/ReportLuiza/ReportContract"; 
string format = "PDF"; 

// Prepare report parameter. 
ParameterValue[] parameters = new ParameterValue[1]; 
parameters[0] = new ParameterValue(); 
parameters[0].Name = "NMB_CONTRACT"; 
parameters[0].Value = txtNmbContractReport.Text; 

string encoding; 
string mimeType; 
string extension; 
Warning[] warnings = null; 
string[] streamIDs = null; 

ExecutionInfo execInfo = new ExecutionInfo(); 
ExecutionHeader execHeader = new ExecutionHeader(); 

rs.ExecutionHeaderValue = execHeader; 

execInfo = rs.LoadReport(reportPath, null); 

rs.SetExecutionParameters(parameters, "pt-br"); 
String SessionId = rs.ExecutionHeaderValue.ExecutionID; 

try 
{ 
    result = rs.Render(format, null, out extension, out encoding, out mimeType, out warnings, out streamIDs); 

    execInfo = rs.GetExecutionInfo(); 
} 
catch (SoapException se) 
{ 
    ShowMessage(se.Detail.OuterXml); 
} 

// Write the contents of the report to an pdf file. 
try 
{ 
    using (FileStream stream = new FileStream(@"c:\report.pdf", FileMode.Create, FileAccess.ReadWrite)) 
    { 
     stream.Write(result, 0, result.Length); 
     stream.Close(); 
    } 
} 
catch (Exception ex) 
{ 
    ShowMessage(ex.Message); 
} 

對於這個代碼，我只好一個Web引用添加到它提到的.asmx文件。

報告和WebSite都在IIS 7.5版本的同一臺服務器上部署/發佈。

有沒有一種方法，用戶可以選擇它想要保存.pdf文件的位置？

任何幫助將不勝感激。

如果您需要更多信息來幫助我，請提問。

在此先感謝。

Answer 1

您可能要兩個try-catch塊結合：

ReportExecutionService rs = new ReportExecutionService(); 
rs.Credentials = System.Net.CredentialCache.DefaultCredentials; 
rs.Url = "http://MyServer/ReportServer/ReportExecution2005.asmx"; 

arguments 
byte[] result = null; 
string reportPath = "/ReportLuiza/ReportContract"; 
string format = "PDF"; 

// Prepare report parameter. 
ParameterValue[] parameters = new ParameterValue[1]; 
parameters[0] = new ParameterValue(); 
parameters[0].Name = "NMB_CONTRACT"; 
parameters[0].Value = txtNmbContractReport.Text; 

string encoding; 
string mimeType; 
string extension; 
Warning[] warnings = null; 
string[] streamIDs = null; 

ExecutionInfo execInfo = new ExecutionInfo(); 
ExecutionHeader execHeader = new ExecutionHeader(); 

rs.ExecutionHeaderValue = execHeader; 

execInfo = rs.LoadReport(reportPath, null); 

rs.SetExecutionParameters(parameters, "pt-br"); 
String SessionId = rs.ExecutionHeaderValue.ExecutionID; 

try 
{ 
    result = rs.Render(format, null, out extension, out encoding, out mimeType, out warnings, out streamIDs); 

    execInfo = rs.GetExecutionInfo(); 
} 
catch (SoapException se) 
{ 
    ShowMessage(se.Detail.OuterXml); 
} 

// Write the contents of the report to an pdf file. 
try 
{ 
    /* 
    using (FileStream stream = new FileStream(@"c:\report.pdf", FileMode.Create, FileAccess.ReadWrite)) 
    { 
     stream.Write(result, 0, result.Length); 
     stream.Close(); 
    } 
    */ 
    Response.Clear(); 
    Response.ContentType = "application/pdf"; 
    Response.AddHeader("Content-Disposition", "attachment;filename=\"report.pdf\""); 
    Response.BinaryWrite(result); 
    Response.Flush(); 
    Response.End(); 
} 
catch (Exception ex) 
{ 
    ShowMessage(ex.Message); 
}