CRMSubject.RetrieveRootNodes Method
The RetrieveRootNodes method retrieves all root nodes for the specified organization. Root nodes are subjects whose parent subject is NULL.
Syntax
[Visual Basic .NET]
Public Function RetrieveRootNodes(
ByVal Caller As CUserAuth,
ByVal OrganizationId As String,
ByVal Mask As UInt32,
ByVal ColumnSetXML As String
) As String
[C#]
public string RetrieveRootNodes(
CUserAuth Caller,
string OrganizationId,
uint Mask,
string ColumnSetXML
);
[C++]
public: String* RetrieveRootNodes(
CUserAuth* Caller,
String* OrganizationId,
unsigned long Mask,
String* ColumnSetXML
);
Parameters
Caller
Specifies the identity of the caller. To perform this action, the caller must have the prvReadSubject privilege and access rights on the objects to be retrieved. See CUserAuth.
OrganizationId
Specifies the ID of the organization.
Mask
Specifies the feature mask (Incident, KBArticle, ...).
ColumnSetXML
Specifies an XML string describing the set of columns to be retrieved. Passing an empty string or null returns all columns (Nothing or "" in VB .NET). You can find the valid column names in subject.xsd. See also ColumnSetXML Schema.
Return Value
Returns a String type that specifies the XML data containing the set of subjects requested. The fields that are returned depend on what fields are specified in the ColumnSetXML parameter. This XML string is in the format
<subjects> + subject1..N + </subjects>
where the XML schema for each subject is described by subject.xsd.
Remarks
Unlike the Retrieve method, the XML string returned from this method may contain multiple objects. If no objects are returned the method simply returns an XML document for the object type with no data.
The XML string returned from this method does not contain elements for fields where the value is null or contains empty strings. This improves performance by not sending more XML data than is necessary from the server to the client.
If there is an error, SOAP throws an exception and the error message is reported in System.Web.Services.Protocols.SoapException.Detail.OuterXml.
All IDs passed to the platform are GUIDs wrapped in braces. For example: {6522D89A-A752-4455-A2B0-51494C6957C3}
Example
[C#]
// strServer should be set with the name of the platform Web server
string strServer = "myservername";
// virtualDirectory should be set with the name of the Microsoft CRM
// virtual directory on the platform Web server
string virtualDirectory = "mscrmservices";
string strDir = "https://" + strServer + "/" + virtualDirectory + "/";
// BizUser proxy object
Microsoft.Crm.Platform.Proxy.BizUser bizUser = new Microsoft.Crm.Platform.Proxy.BizUser ();
bizUser.Credentials = System.Net.CredentialCache.DefaultCredentials;
bizUser.Url = strDir + "BizUser.srf";
// CRMSubject proxy object
Microsoft.Crm.Platform.Proxy.CRMSubject subject = new Microsoft.Crm.Platform.Proxy.CRMSubject();
subject.Credentials = System.Net.CredentialCache.DefaultCredentials;
subject.Url = strDir + "CRMSubject.srf";
string strErrorMsg;
try
{
Microsoft.Crm.Platform.Proxy.CUserAuth userAuth = bizUser.WhoAmI();
string strOrgId = "{E4735CBC-A539-4B8C-B848-0C3C94E19BA6}";
// Set up the columns that you want to retrieve
string strColumnSetXml = "<columnset>";
strColumnSetXml += "<column>title</column>";
strColumnSetXml += "</columnset>";
// Retrieve the root nodes
string strResultsXml = subject.RetrieveRootNodes(userAuth, strOrgId, 1, strColumnSetXml);
}
catch (System.Web.Services.Protocols.SoapException err)
{
// Process the platform error here
strErrorMsg = ("ErrorMessage: " + err.Message + " " + err.Detail.OuterXml + " Source: " + err.Source );
}
catch (Exception err)
{
// Process other errors here
strErrorMsg = ("ErrorMessage: " + err.Message );
}
Requirements
Namespace: Microsoft.Crm.Platform.Proxy
Assembly: Microsoft.Crm.Platform.Proxy.dll
See Also