GetPrevious Method

Summary

Returns the last DicomUid item in the UID Table that immediately precedes the specified item.

Syntax

Objective-C

C++/CLI

Java

public DicomUid GetPrevious( 
   DicomUid uid 
)

- (nullable LTDicomUid *)previous:(LTDicomUid *)uid;

public DicomUid getPrevious(DicomUid uid)

public: 
DicomUid^ GetPrevious(  
   DicomUid^ uid 
)

Parameters

uid
An item in the UID Table, the item that immediately precedes this item will be returned.

Return Value

DicomUid class that contains an item in the UID Table that immediately precedes the item specified by uid.

Remarks

The following methods will also help you navigate the UID Table:
- GetFirst
- GetLast
- GetNext
To determine the number of entries in the UID Table, use GetCount.

Example

using Leadtools; 
using Leadtools.Dicom; 
 
 
public void TestUIDTable() 
{ 
 
   //Make sure to initialize the DICOM engine, this needs to be done only once  
   //In the whole application 
   DicomEngine.Startup(); 
 
   //We don't need to call this since the DicomEngine.Startup already does that for us 
   //These calls are for demonstration purposes only 
   DicomUidTable.Instance.Reset(); 
   DicomUidTable.Instance.Default(); 
 
   //We can also call FindByIndex if we know the index of this UID 
   DicomUid uid = DicomUidTable.Instance.Find(DicomUidType.SCImageStorage); 
   DicomUidTable.Instance.Delete(uid); 
 
   DicomUid uid1 = DicomUidTable.Instance.Insert(DicomUidType.SCImageStorage, "Secondary Capture Image Storage", DicomUIDCategory.Class); 
   Debug.Assert(DicomUidTable.Instance.Exists(uid1) == true); 
   DicomUidTable.Instance.SetName(uid1, "Secondary Capture Image Storage 1"); 
 
   int count = 0; 
   //If we want to loop through all the UIDs in the table we can do this: 
   uid = DicomUidTable.Instance.GetFirst(); 
   while (uid != null) 
   { 
      // We can also access the rest of the properties of DicomUid in here, 
      // such as DicomUid.Code, DicomUid.Name, DicomUid.Type 
 
      if (uid.Code == DicomUidType.SCImageStorage) 
      { 
         Console.WriteLine(uid.Name); 
      } 
      count++; 
      uid = DicomUidTable.Instance.GetNext(uid); 
   } 
   //We can use GetLast and GetPrevious to achieve the same thing 
 
   Debug.Assert(count == DicomUidTable.Instance.GetCount()); 
 
   DicomEngine.Shutdown(); 
}