ICredentials 接口
提供用于为 Web 客户端身份验证检索凭据的基身份验证接口。
**命名空间:**System.Net
**程序集:**System（在 system.dll 中）
语法
声明
Public Interface ICredentials
用法
Dim instance As ICredentials
public interface ICredentials
public interface class ICredentials
public interface ICredentials
public interface ICredentials
备注
ICredentials 接口为向应用程序提供网络凭据的对象提供 GetCredential 方法。
示例
下面的示例阐释如何使用 ICredentials 接口。
Class CredentialInfo
Public uriObj As Uri
Public authenticationType As [String]
Public networkCredentialObj As NetworkCredential
Public Sub New(uriObj As Uri, authenticationType As [String], networkCredentialObj As NetworkCredential)
Me.uriObj = uriObj
Me.authenticationType = authenticationType
Me.networkCredentialObj = networkCredentialObj
End Sub 'New
End Class 'CredentialInfo
Private arrayListObj As ArrayList
Public Sub New()
arrayListObj = New ArrayList()
End Sub 'New
Public Sub Add(uriObj As Uri, authenticationType As [String], credential As NetworkCredential)
' adds a 'CredentialInfo' object into a list
arrayListObj.Add(New CredentialInfo(uriObj, authenticationType, credential))
End Sub 'Add
' Remove the 'CredentialInfo' object from the list which matches to the given 'Uri' and 'AuthenticationType'
Public Sub Remove(uriObj As Uri, authenticationType As [String])
Dim index As Integer
For index = 0 To arrayListObj.Count - 1
Dim credentialInfo As CredentialInfo = CType(arrayListObj(index), CredentialInfo)
If uriObj.Equals(credentialInfo.uriObj) And authenticationType.Equals(credentialInfo.authenticationType) Then
arrayListObj.RemoveAt(index)
End If
Next index
End Sub 'Remove
Public Function GetCredential(uriObj As Uri, authenticationType As [String]) As NetworkCredential Implements ICredentials.GetCredential
Dim index As Integer
For index = 0 To arrayListObj.Count - 1
Dim credentialInfoObj As CredentialInfo = CType(arrayListObj(index), CredentialInfo)
If uriObj.Equals(credentialInfoObj.uriObj) And authenticationType.Equals(credentialInfoObj.authenticationType) Then
Return credentialInfoObj.networkCredentialObj
End If
Next index
Return Nothing
End Function 'GetCredential
class CredentialList : ICredentials
{
class CredentialInfo
{
public Uri uriObj;
public String authenticationType;
public NetworkCredential networkCredentialObj;
public CredentialInfo(Uri uriObj, String authenticationType, NetworkCredential networkCredentialObj)
{
this.uriObj = uriObj;
this.authenticationType = authenticationType;
this.networkCredentialObj = networkCredentialObj;
}
}
private ArrayList arrayListObj;
public CredentialList()
{
arrayListObj = new ArrayList();
}
public void Add (Uri uriObj, String authenticationType, NetworkCredential credential)
{
// Add a 'CredentialInfo' object into a list.
arrayListObj.Add (new CredentialInfo(uriObj, authenticationType, credential));
}
// Remove the 'CredentialInfo' object from the list that matches to the given 'Uri' and 'AuthenticationType'
public void Remove (Uri uriObj, String authenticationType)
{
for(int index=0;index < arrayListObj.Count; index++)
{
CredentialInfo credentialInfo = (CredentialInfo)arrayListObj[index];
if(uriObj.Equals(credentialInfo.uriObj)&& authenticationType.Equals(credentialInfo.authenticationType))
arrayListObj.RemoveAt(index);
}
}
public NetworkCredential GetCredential (Uri uriObj, String authenticationType)
{
for(int index=0;index < arrayListObj.Count; index++)
{
CredentialInfo credentialInfoObj = (CredentialInfo)arrayListObj[index];
if(uriObj.Equals(credentialInfoObj.uriObj) && authenticationType.Equals(credentialInfoObj.authenticationType))
return credentialInfoObj.networkCredentialObj;
}
return null;
}
};
ref class CredentialList: public ICredentials
{
private:
ref class CredentialInfo
{
public:
Uri^ uriObj;
String^ authenticationType;
NetworkCredential^ networkCredentialObj;
CredentialInfo( Uri^ uriObj, String^ authenticationType, NetworkCredential^ networkCredentialObj )
{
this->uriObj = uriObj;
this->authenticationType = authenticationType;
this->networkCredentialObj = networkCredentialObj;
}
};
ArrayList^ arrayListObj;
public:
CredentialList()
{
arrayListObj = gcnew ArrayList;
}
void Add( Uri^ uriObj, String^ authenticationType, NetworkCredential^ credential )
{
// Add a 'CredentialInfo' object into a list.
arrayListObj->Add( gcnew CredentialInfo( uriObj,authenticationType,credential ) );
}
// Remove the 'CredentialInfo' object from the list that matches to the given 'Uri' and 'AuthenticationType'
void Remove( Uri^ uriObj, String^ authenticationType )
{
for ( int index = 0; index < arrayListObj->Count; index++ )
{
CredentialInfo^ credentialInfo = dynamic_cast<CredentialInfo^>(arrayListObj[ index ]);
if ( uriObj->Equals( credentialInfo->uriObj ) && authenticationType->Equals( credentialInfo->authenticationType ) )
arrayListObj->RemoveAt( index );
}
}
virtual NetworkCredential^ GetCredential( Uri^ uriObj, String^ authenticationType )
{
for ( int index = 0; index < arrayListObj->Count; index++ )
{
CredentialInfo^ credentialInfoObj = dynamic_cast<CredentialInfo^>(arrayListObj[ index ]);
if ( uriObj->Equals( credentialInfoObj->uriObj ) && authenticationType->Equals( credentialInfoObj->authenticationType ) )
return credentialInfoObj->networkCredentialObj;
}
return nullptr;
}
};
class CredentialList implements ICredentials
{
class CredentialInfo
{
public Uri uriObj;
public String authenticationType;
public NetworkCredential networkCredentialObj;
public CredentialInfo(Uri uriObj, String authenticationType,
NetworkCredential networkCredentialObj)
{
this.uriObj = uriObj;
this.authenticationType = authenticationType;
this.networkCredentialObj = networkCredentialObj;
} //CredentialInfo
} //CredentialInfo
private ArrayList arrayListObj;
public CredentialList()
{
arrayListObj = new ArrayList();
} //CredentialList
public void Add(Uri uriObj, String authenticationType,
NetworkCredential credential)
{
// Add a 'CredentialInfo' object into a list.
arrayListObj.Add(new CredentialInfo(uriObj,
authenticationType, credential));
} //Add
// Remove the 'CredentialInfo' object from the list that matches to
// the given 'Uri' and 'AuthenticationType'
public void Remove(Uri uriObj, String authenticationType)
{
for (int index = 0; index < arrayListObj.get_Count(); index++) {
CredentialInfo credentialInfo = (CredentialInfo)
arrayListObj.get_Item(index);
if (uriObj.Equals(credentialInfo.uriObj) &&
authenticationType.Equals(credentialInfo.authenticationType)) {
arrayListObj.RemoveAt(index);
}
}
} //Remove
public NetworkCredential GetCredential(Uri uriObj,
String authenticationType)
{
for (int index = 0; index < arrayListObj.get_Count(); index++) {
CredentialInfo credentialInfoObj = (CredentialInfo)
arrayListObj.get_Item(index);
if (uriObj.Equals(credentialInfoObj.uriObj) &&
authenticationType.Equals(credentialInfoObj.
authenticationType)) {
return credentialInfoObj.networkCredentialObj;
}
}
return null;
} //GetCredential
} //CredentialList
平台
Windows 98、Windows 2000 SP4、Windows CE、Windows Millennium Edition、Windows Mobile for Pocket PC、Windows Mobile for Smartphone、Windows Server 2003、Windows XP Media Center Edition、Windows XP Professional x64 Edition、Windows XP SP2、Windows XP Starter Edition
.NET Framework 并不是对每个平台的所有版本都提供支持。有关受支持版本的列表，请参见系统要求。
版本信息
.NET Framework
受以下版本支持：2.0、1.1、1.0
.NET Compact Framework
受以下版本支持：2.0、1.0