ReportViewer中设置ServerReport.ReportServerCredentials属性的方法(WEB版)

当使用SSRS技术来布置报表,可能使用MS自带的ReportViewer控件来读取报表.

它分为Web和Windows两种版本;此处Web版.

ServerReport.ReportServerCredentials属性的类型为Microsoft.Reporting.WebForms.IReportServerCredentials,它可提供三种认证方式所需的证书(Credential):

 1) Form认证证书(GetFormsCredentials);

 2) 扮演认证证书(ImpersonationUser);

 3) 网络认证证书(NetworkCredentials).

 

 当报表的服务器端使用网络认证时,需要实现NetworkCredentials接口,而且必须将GetFormsCredentials()接口的返回值设置为False,否则会导致论证失败.

 示例代码如下:

 

代码

 1     '''   <summary>
 2       '''  Initialize report viewer
 3       '''   </summary>
 4       '''   <remarks> Viewer是ReportViewer的一个实例 </remarks>
 5       Protected   Overridable   Sub  LoadReportViewer()
 6           With  Viewer
 7              .Visible  =   True
 8              .ProcessingMode  =  Microsoft.Reporting.WebForms.ProcessingMode.Remote
 9              .ServerReport.ReportServerUrl  =   New  Uri( < 报表服务器的URL > )
10              .ServerReport.ReportPath  =   < 报表相对于ReportServerUrl的路径 >
11              .ServerReport.ReportServerCredentials  =   < IReportServerCredentials的实例 >
12              .ShowParameterPrompts  =   False
13           End   With
14       End Sub
15 
16 
17      '''   <summary>
18       '''  Internal implementation for report server credentails.
19       '''   </summary>
20       '''   <remarks></remarks>
21       Public   Class  ReportServerCredentials
22           Implements  IReportServerCredentials
23 
24           Private  _Domain  As   String
25           Private  _Password  As   String
26           Private  _UserName  As   String
27 
28           Public   Sub   New ()
29               Me .New( Nothing ,  Nothing ,  Nothing )
30           End Sub
31 
32           Public   Sub   New ( ByVal  userName  As   String ,  ByVal  password  As   String )
33               Me .New(userName, password,  Nothing )
34           End Sub
35 
36           Public   Sub   New ( ByVal  userName  As   String ,  ByVal  password  As   String ,  ByVal  domain  As   String )
37              _UserName  =  userName
38              _Password  =  password
39              _Domain  =  domain
40           End Sub
41 
42           Public   Property  Domain()  As   String
43               Get
44                   Return  _Domain
45               End   Get
46               Set ( ByVal  value  As   String )
47                  _Domain  =  value
48               End   Set
49           End Property
50 
51           Public   Property  Password()  As   String
52               Get
53                   Return  _Password
54               End   Get
55               Set ( ByVal  value  As   String )
56                  _Password  =  value
57               End   Set
58           End Property
59 
60           Public   Property  UserName()  As   String
61               Get
62                   Return  _UserName
63               End   Get
64               Set ( ByVal  value  As   String )
65                  _UserName  =  value
66               End   Set
67           End Property
68 
69           Public   Function  GetFormsCredentials( ByRef  authCookie  As  System.Net.Cookie,  ByRef  userName  As   String ,  ByRef  password  As   String ,  ByRef  authority  As   String )  As   Boolean   Implements  Microsoft.Reporting.WebForms.IReportServerCredentials.GetFormsCredentials
70           ' ---注意此处必须设置为False,否则论证为失败
71               Return   False
72           End Function
73 
74           Public   ReadOnly   Property  ImpersonationUser()  As  System.Security.Principal.WindowsIdentity  Implements  Microsoft.Reporting.WebForms.IReportServerCredentials.ImpersonationUser
75               Get
76                   Return   Nothing
77               End   Get
78           End Property
79 
80           Public   ReadOnly   Property  NetworkCredentials()  As  System.Net.ICredentials  Implements  Microsoft.Reporting.WebForms.IReportServerCredentials.NetworkCredentials
81               Get
82                   Return   New  System.Net.NetworkCredential( Me .UserName,  Me .Password,  Me .Domain)
83               End   Get
84           End Property
85       End Class